Merge pull request #664 from AubrCool/fix-bsp.stm32l072

[bsp] add bsp stm32l072
2026-11-09 20:45:41 +08:00 · 2016-09-25 21:28:47 +08:00
commit 6f32dc4472
@@ -0,0 +1,127 @@
+/**
+  ******************************************************************************
+  * @file    system_stm32l0xx.h
+  * @author  MCD Application Team
+  * @version V1.7.0
+  * @date    31-May-2016
+  * @brief   CMSIS Cortex-M0+ Device Peripheral Access Layer System Header File.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+
+/** @addtogroup CMSIS
+  * @{
+  */
+
+/** @addtogroup stm32l0xx_system
+  * @{
+  */
+
+/**
+  * @brief Define to prevent recursive inclusion
+  */
+#ifndef __SYSTEM_STM32L0XX_H
+#define __SYSTEM_STM32L0XX_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/** @addtogroup STM32L0xx_System_Includes
+  * @{
+  */
+
+/**
+  * @}
+  */
+
+
+/** @addtogroup STM32L0xx_System_Exported_types
+  * @{
+  */
+  /* This variable is updated in three ways:
+      1) by calling CMSIS function SystemCoreClockUpdate()
+      2) by calling HAL API function HAL_RCC_GetSysClockFreq()
+      3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
+         Note: If you use this function to configure the system clock; then there
+               is no need to call the 2 first functions listed above, since SystemCoreClock
+               variable is updated automatically.
+  */
+extern uint32_t SystemCoreClock;          /*!< System Clock Frequency (Core Clock) */
+/*
+*/
+extern const uint8_t AHBPrescTable[16];   /*!< AHB prescalers table values */
+extern const uint8_t APBPrescTable[8];    /*!< APB prescalers table values */
+extern const uint8_t PLLMulTable[9];      /*!< PLL multipiers table values */
+
+
+/**
+  * @}
+  */
+
+/** @addtogroup STM32L0xx_System_Exported_Constants
+  * @{
+  */
+
+/**
+  * @}
+  */
+
+/** @addtogroup STM32L0xx_System_Exported_Macros
+  * @{
+  */
+
+/**
+  * @}
+  */
+
+/** @addtogroup STM32L0xx_System_Exported_Functions
+  * @{
+  */
+
+extern void SystemInit(void);
+extern void SystemCoreClockUpdate(void);
+/**
+  * @}
+  */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*__SYSTEM_STM32L0XX_H */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
@@ -0,0 +1,33 @@
+/*###ICF### Section handled by ICF editor, don't touch! ****/
+/*-Editor annotation file-*/
+/* IcfEditorFile="$TOOLKIT_DIR$\config\ide\IcfEditor\cortex_v1_0.xml" */
+/*-Specials-*/
+define symbol __ICFEDIT_intvec_start__ = 0x08000000;
+/*-Memory Regions-*/
+define symbol __ICFEDIT_region_ROM_start__ = 0x08000000 ;
+define symbol __ICFEDIT_region_ROM_end__   = 0x0802FFFF;
+define symbol __ICFEDIT_region_RAM_start__  = 0x20000000;
+define symbol __ICFEDIT_region_RAM_end__    = 0x20004FFF;
+
+/*-Sizes-*/
+define symbol __ICFEDIT_size_cstack__ = 0x400;
+define symbol __ICFEDIT_size_heap__   = 0x200;
+/**** End of ICF editor section. ###ICF###*/
+
+
+define memory mem with size = 4G;
+define region ROM_region      = mem:[from __ICFEDIT_region_ROM_start__   to __ICFEDIT_region_ROM_end__];
+define region RAM_region      = mem:[from __ICFEDIT_region_RAM_start__   to __ICFEDIT_region_RAM_end__];
+
+
+define block CSTACK    with alignment = 8, size = __ICFEDIT_size_cstack__   { };
+define block HEAP      with alignment = 8, size = __ICFEDIT_size_heap__     { };
+
+initialize by copy { readwrite };
+do not initialize  { section .noinit };
+
+place at address mem:__ICFEDIT_intvec_start__ { readonly section .intvec };
+
+place in ROM_region   { readonly };
+place in RAM_region   { readwrite,
+                        block CSTACK, block HEAP };
@@ -0,0 +1,33 @@
+/*###ICF### Section handled by ICF editor, don't touch! ****/
+/*-Editor annotation file-*/
+/* IcfEditorFile="$TOOLKIT_DIR$\config\ide\IcfEditor\cortex_v1_0.xml" */
+/*-Specials-*/
+define symbol __ICFEDIT_intvec_start__ = 0x20000000;
+/*-Memory Regions-*/
+define symbol __ICFEDIT_region_ROM_start__ = 0x20000000;
+define symbol __ICFEDIT_region_ROM_end__   = 0x20002FFF;
+define symbol __ICFEDIT_region_RAM_start__ = 0x20003000;
+define symbol __ICFEDIT_region_RAM_end__   = 0x20004FFF;
+
+/*-Sizes-*/
+define symbol __ICFEDIT_size_cstack__ = 0x400;
+define symbol __ICFEDIT_size_heap__   = 0x200;
+/**** End of ICF editor section. ###ICF###*/
+
+
+define memory mem with size = 4G;
+define region ROM_region      = mem:[from __ICFEDIT_region_ROM_start__   to __ICFEDIT_region_ROM_end__];
+define region RAM_region      = mem:[from __ICFEDIT_region_RAM_start__   to __ICFEDIT_region_RAM_end__];
+
+
+define block CSTACK    with alignment = 8, size = __ICFEDIT_size_cstack__   { };
+define block HEAP      with alignment = 8, size = __ICFEDIT_size_heap__     { };
+
+initialize by copy { readwrite };
+do not initialize  { section .noinit };
+
+place at address mem:__ICFEDIT_intvec_start__ { readonly section .intvec };
+
+place in ROM_region   { readonly };
+place in RAM_region   { readwrite,
+                        block CSTACK, block HEAP };
@@ -0,0 +1,136 @@
+/* ----------------------------------------------------------------------
+* Copyright (C) 2010-2014 ARM Limited. All rights reserved.
+*
+* $Date:        19. October 2015
+* $Revision: 	V.1.4.5 a
+*
+* Project: 	    CMSIS DSP Library
+* Title:	    arm_common_tables.h
+*
+* Description:	This file has extern declaration for common tables like Bitreverse, reciprocal etc which are used across different functions
+*
+* Target Processor: Cortex-M4/Cortex-M3
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions
+* are met:
+*   - Redistributions of source code must retain the above copyright
+*     notice, this list of conditions and the following disclaimer.
+*   - Redistributions in binary form must reproduce the above copyright
+*     notice, this list of conditions and the following disclaimer in
+*     the documentation and/or other materials provided with the
+*     distribution.
+*   - Neither the name of ARM LIMITED nor the names of its contributors
+*     may be used to endorse or promote products derived from this
+*     software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+* POSSIBILITY OF SUCH DAMAGE.
+* -------------------------------------------------------------------- */
+
+#ifndef _ARM_COMMON_TABLES_H
+#define _ARM_COMMON_TABLES_H
+
+#include "arm_math.h"
+
+extern const uint16_t armBitRevTable[1024];
+extern const q15_t armRecipTableQ15[64];
+extern const q31_t armRecipTableQ31[64];
+/* extern const q31_t realCoefAQ31[1024]; */
+/* extern const q31_t realCoefBQ31[1024]; */
+extern const float32_t twiddleCoef_16[32];
+extern const float32_t twiddleCoef_32[64];
+extern const float32_t twiddleCoef_64[128];
+extern const float32_t twiddleCoef_128[256];
+extern const float32_t twiddleCoef_256[512];
+extern const float32_t twiddleCoef_512[1024];
+extern const float32_t twiddleCoef_1024[2048];
+extern const float32_t twiddleCoef_2048[4096];
+extern const float32_t twiddleCoef_4096[8192];
+#define twiddleCoef twiddleCoef_4096
+extern const q31_t twiddleCoef_16_q31[24];
+extern const q31_t twiddleCoef_32_q31[48];
+extern const q31_t twiddleCoef_64_q31[96];
+extern const q31_t twiddleCoef_128_q31[192];
+extern const q31_t twiddleCoef_256_q31[384];
+extern const q31_t twiddleCoef_512_q31[768];
+extern const q31_t twiddleCoef_1024_q31[1536];
+extern const q31_t twiddleCoef_2048_q31[3072];
+extern const q31_t twiddleCoef_4096_q31[6144];
+extern const q15_t twiddleCoef_16_q15[24];
+extern const q15_t twiddleCoef_32_q15[48];
+extern const q15_t twiddleCoef_64_q15[96];
+extern const q15_t twiddleCoef_128_q15[192];
+extern const q15_t twiddleCoef_256_q15[384];
+extern const q15_t twiddleCoef_512_q15[768];
+extern const q15_t twiddleCoef_1024_q15[1536];
+extern const q15_t twiddleCoef_2048_q15[3072];
+extern const q15_t twiddleCoef_4096_q15[6144];
+extern const float32_t twiddleCoef_rfft_32[32];
+extern const float32_t twiddleCoef_rfft_64[64];
+extern const float32_t twiddleCoef_rfft_128[128];
+extern const float32_t twiddleCoef_rfft_256[256];
+extern const float32_t twiddleCoef_rfft_512[512];
+extern const float32_t twiddleCoef_rfft_1024[1024];
+extern const float32_t twiddleCoef_rfft_2048[2048];
+extern const float32_t twiddleCoef_rfft_4096[4096];
+
+
+/* floating-point bit reversal tables */
+#define ARMBITREVINDEXTABLE__16_TABLE_LENGTH ((uint16_t)20  )
+#define ARMBITREVINDEXTABLE__32_TABLE_LENGTH ((uint16_t)48  )
+#define ARMBITREVINDEXTABLE__64_TABLE_LENGTH ((uint16_t)56  )
+#define ARMBITREVINDEXTABLE_128_TABLE_LENGTH ((uint16_t)208 )
+#define ARMBITREVINDEXTABLE_256_TABLE_LENGTH ((uint16_t)440 )
+#define ARMBITREVINDEXTABLE_512_TABLE_LENGTH ((uint16_t)448 )
+#define ARMBITREVINDEXTABLE1024_TABLE_LENGTH ((uint16_t)1800)
+#define ARMBITREVINDEXTABLE2048_TABLE_LENGTH ((uint16_t)3808)
+#define ARMBITREVINDEXTABLE4096_TABLE_LENGTH ((uint16_t)4032)
+
+extern const uint16_t armBitRevIndexTable16[ARMBITREVINDEXTABLE__16_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable32[ARMBITREVINDEXTABLE__32_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable64[ARMBITREVINDEXTABLE__64_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable128[ARMBITREVINDEXTABLE_128_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable256[ARMBITREVINDEXTABLE_256_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable512[ARMBITREVINDEXTABLE_512_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable1024[ARMBITREVINDEXTABLE1024_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable2048[ARMBITREVINDEXTABLE2048_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable4096[ARMBITREVINDEXTABLE4096_TABLE_LENGTH];
+
+/* fixed-point bit reversal tables */
+#define ARMBITREVINDEXTABLE_FIXED___16_TABLE_LENGTH ((uint16_t)12  )
+#define ARMBITREVINDEXTABLE_FIXED___32_TABLE_LENGTH ((uint16_t)24  )
+#define ARMBITREVINDEXTABLE_FIXED___64_TABLE_LENGTH ((uint16_t)56  )
+#define ARMBITREVINDEXTABLE_FIXED__128_TABLE_LENGTH ((uint16_t)112 )
+#define ARMBITREVINDEXTABLE_FIXED__256_TABLE_LENGTH ((uint16_t)240 )
+#define ARMBITREVINDEXTABLE_FIXED__512_TABLE_LENGTH ((uint16_t)480 )
+#define ARMBITREVINDEXTABLE_FIXED_1024_TABLE_LENGTH ((uint16_t)992 )
+#define ARMBITREVINDEXTABLE_FIXED_2048_TABLE_LENGTH ((uint16_t)1984)
+#define ARMBITREVINDEXTABLE_FIXED_4096_TABLE_LENGTH ((uint16_t)4032)
+
+extern const uint16_t armBitRevIndexTable_fixed_16[ARMBITREVINDEXTABLE_FIXED___16_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable_fixed_32[ARMBITREVINDEXTABLE_FIXED___32_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable_fixed_64[ARMBITREVINDEXTABLE_FIXED___64_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable_fixed_128[ARMBITREVINDEXTABLE_FIXED__128_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable_fixed_256[ARMBITREVINDEXTABLE_FIXED__256_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable_fixed_512[ARMBITREVINDEXTABLE_FIXED__512_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable_fixed_1024[ARMBITREVINDEXTABLE_FIXED_1024_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable_fixed_2048[ARMBITREVINDEXTABLE_FIXED_2048_TABLE_LENGTH];
+extern const uint16_t armBitRevIndexTable_fixed_4096[ARMBITREVINDEXTABLE_FIXED_4096_TABLE_LENGTH];
+
+/* Tables for Fast Math Sine and Cosine */
+extern const float32_t sinTable_f32[FAST_MATH_TABLE_SIZE + 1];
+extern const q31_t sinTable_q31[FAST_MATH_TABLE_SIZE + 1];
+extern const q15_t sinTable_q15[FAST_MATH_TABLE_SIZE + 1];
+
+#endif /*  ARM_COMMON_TABLES_H */
@@ -0,0 +1,79 @@
+/* ----------------------------------------------------------------------
+* Copyright (C) 2010-2014 ARM Limited. All rights reserved.
+*
+* $Date:        19. March 2015
+* $Revision: 	V.1.4.5
+*
+* Project: 	    CMSIS DSP Library
+* Title:	    arm_const_structs.h
+*
+* Description:	This file has constant structs that are initialized for
+*              user convenience.  For example, some can be given as
+*              arguments to the arm_cfft_f32() function.
+*
+* Target Processor: Cortex-M4/Cortex-M3
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions
+* are met:
+*   - Redistributions of source code must retain the above copyright
+*     notice, this list of conditions and the following disclaimer.
+*   - Redistributions in binary form must reproduce the above copyright
+*     notice, this list of conditions and the following disclaimer in
+*     the documentation and/or other materials provided with the
+*     distribution.
+*   - Neither the name of ARM LIMITED nor the names of its contributors
+*     may be used to endorse or promote products derived from this
+*     software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+* POSSIBILITY OF SUCH DAMAGE.
+* -------------------------------------------------------------------- */
+
+#ifndef _ARM_CONST_STRUCTS_H
+#define _ARM_CONST_STRUCTS_H
+
+#include "arm_math.h"
+#include "arm_common_tables.h"
+
+   extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len16;
+   extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len32;
+   extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len64;
+   extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len128;
+   extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len256;
+   extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len512;
+   extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len1024;
+   extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len2048;
+   extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len4096;
+
+   extern const arm_cfft_instance_q31 arm_cfft_sR_q31_len16;
+   extern const arm_cfft_instance_q31 arm_cfft_sR_q31_len32;
+   extern const arm_cfft_instance_q31 arm_cfft_sR_q31_len64;
+   extern const arm_cfft_instance_q31 arm_cfft_sR_q31_len128;
+   extern const arm_cfft_instance_q31 arm_cfft_sR_q31_len256;
+   extern const arm_cfft_instance_q31 arm_cfft_sR_q31_len512;
+   extern const arm_cfft_instance_q31 arm_cfft_sR_q31_len1024;
+   extern const arm_cfft_instance_q31 arm_cfft_sR_q31_len2048;
+   extern const arm_cfft_instance_q31 arm_cfft_sR_q31_len4096;
+
+   extern const arm_cfft_instance_q15 arm_cfft_sR_q15_len16;
+   extern const arm_cfft_instance_q15 arm_cfft_sR_q15_len32;
+   extern const arm_cfft_instance_q15 arm_cfft_sR_q15_len64;
+   extern const arm_cfft_instance_q15 arm_cfft_sR_q15_len128;
+   extern const arm_cfft_instance_q15 arm_cfft_sR_q15_len256;
+   extern const arm_cfft_instance_q15 arm_cfft_sR_q15_len512;
+   extern const arm_cfft_instance_q15 arm_cfft_sR_q15_len1024;
+   extern const arm_cfft_instance_q15 arm_cfft_sR_q15_len2048;
+   extern const arm_cfft_instance_q15 arm_cfft_sR_q15_len4096;
+
+#endif
@@ -0,0 +1,87 @@
+/**************************************************************************//**
+ * @file     core_cmFunc.h
+ * @brief    CMSIS Cortex-M Core Function Access Header File
+ * @version  V4.30
+ * @date     20. October 2015
+ ******************************************************************************/
+/* Copyright (c) 2009 - 2015 ARM LIMITED
+
+   All rights reserved.
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are met:
+   - Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+   - Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in the
+     documentation and/or other materials provided with the distribution.
+   - Neither the name of ARM nor the names of its contributors may be used
+     to endorse or promote products derived from this software without
+     specific prior written permission.
+   *
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+   ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
+   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+   ---------------------------------------------------------------------------*/
+
+
+#if   defined ( __ICCARM__ )
+ #pragma system_include         /* treat file as system include file for MISRA check */
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #pragma clang system_header   /* treat file as system include file */
+#endif
+
+#ifndef __CORE_CMFUNC_H
+#define __CORE_CMFUNC_H
+
+
+/* ###########################  Core Function Access  ########################### */
+/** \ingroup  CMSIS_Core_FunctionInterface
+    \defgroup CMSIS_Core_RegAccFunctions CMSIS Core Register Access Functions
+  @{
+*/
+
+/*------------------ RealView Compiler -----------------*/
+#if   defined ( __CC_ARM )
+  #include "cmsis_armcc.h"
+
+/*------------------ ARM Compiler V6 -------------------*/
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #include "cmsis_armcc_V6.h"
+
+/*------------------ GNU Compiler ----------------------*/
+#elif defined ( __GNUC__ )
+  #include "cmsis_gcc.h"
+
+/*------------------ ICC Compiler ----------------------*/
+#elif defined ( __ICCARM__ )
+  #include <cmsis_iar.h>
+
+/*------------------ TI CCS Compiler -------------------*/
+#elif defined ( __TMS470__ )
+  #include <cmsis_ccs.h>
+
+/*------------------ TASKING Compiler ------------------*/
+#elif defined ( __TASKING__ )
+  /*
+   * The CMSIS functions have been implemented as intrinsics in the compiler.
+   * Please use "carm -?i" to get an up to date list of all intrinsics,
+   * Including the CMSIS ones.
+   */
+
+/*------------------ COSMIC Compiler -------------------*/
+#elif defined ( __CSMC__ )
+  #include <cmsis_csm.h>
+
+#endif
+
+/*@} end of CMSIS_Core_RegAccFunctions */
+
+#endif /* __CORE_CMFUNC_H */
@@ -0,0 +1,87 @@
+/**************************************************************************//**
+ * @file     core_cmInstr.h
+ * @brief    CMSIS Cortex-M Core Instruction Access Header File
+ * @version  V4.30
+ * @date     20. October 2015
+ ******************************************************************************/
+/* Copyright (c) 2009 - 2015 ARM LIMITED
+
+   All rights reserved.
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are met:
+   - Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+   - Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in the
+     documentation and/or other materials provided with the distribution.
+   - Neither the name of ARM nor the names of its contributors may be used
+     to endorse or promote products derived from this software without
+     specific prior written permission.
+   *
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+   ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
+   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+   ---------------------------------------------------------------------------*/
+
+
+#if   defined ( __ICCARM__ )
+ #pragma system_include         /* treat file as system include file for MISRA check */
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #pragma clang system_header   /* treat file as system include file */
+#endif
+
+#ifndef __CORE_CMINSTR_H
+#define __CORE_CMINSTR_H
+
+
+/* ##########################  Core Instruction Access  ######################### */
+/** \defgroup CMSIS_Core_InstructionInterface CMSIS Core Instruction Interface
+  Access to dedicated instructions
+  @{
+*/
+
+/*------------------ RealView Compiler -----------------*/
+#if   defined ( __CC_ARM )
+  #include "cmsis_armcc.h"
+
+/*------------------ ARM Compiler V6 -------------------*/
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #include "cmsis_armcc_V6.h"
+
+/*------------------ GNU Compiler ----------------------*/
+#elif defined ( __GNUC__ )
+  #include "cmsis_gcc.h"
+
+/*------------------ ICC Compiler ----------------------*/
+#elif defined ( __ICCARM__ )
+  #include <cmsis_iar.h>
+
+/*------------------ TI CCS Compiler -------------------*/
+#elif defined ( __TMS470__ )
+  #include <cmsis_ccs.h>
+
+/*------------------ TASKING Compiler ------------------*/
+#elif defined ( __TASKING__ )
+  /*
+   * The CMSIS functions have been implemented as intrinsics in the compiler.
+   * Please use "carm -?i" to get an up to date list of all intrinsics,
+   * Including the CMSIS ones.
+   */
+
+/*------------------ COSMIC Compiler -------------------*/
+#elif defined ( __CSMC__ )
+  #include <cmsis_csm.h>
+
+#endif
+
+/*@}*/ /* end of group CMSIS_Core_InstructionInterface */
+
+#endif /* __CORE_CMINSTR_H */
@@ -0,0 +1,96 @@
+/**************************************************************************//**
+ * @file     core_cmSimd.h
+ * @brief    CMSIS Cortex-M SIMD Header File
+ * @version  V4.30
+ * @date     20. October 2015
+ ******************************************************************************/
+/* Copyright (c) 2009 - 2015 ARM LIMITED
+
+   All rights reserved.
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are met:
+   - Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+   - Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in the
+     documentation and/or other materials provided with the distribution.
+   - Neither the name of ARM nor the names of its contributors may be used
+     to endorse or promote products derived from this software without
+     specific prior written permission.
+   *
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+   ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
+   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+   ---------------------------------------------------------------------------*/
+
+
+#if   defined ( __ICCARM__ )
+ #pragma system_include         /* treat file as system include file for MISRA check */
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #pragma clang system_header   /* treat file as system include file */
+#endif
+
+#ifndef __CORE_CMSIMD_H
+#define __CORE_CMSIMD_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+
+/* ###################  Compiler specific Intrinsics  ########################### */
+/** \defgroup CMSIS_SIMD_intrinsics CMSIS SIMD Intrinsics
+  Access to dedicated SIMD instructions
+  @{
+*/
+
+/*------------------ RealView Compiler -----------------*/
+#if   defined ( __CC_ARM )
+  #include "cmsis_armcc.h"
+
+/*------------------ ARM Compiler V6 -------------------*/
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+  #include "cmsis_armcc_V6.h"
+
+/*------------------ GNU Compiler ----------------------*/
+#elif defined ( __GNUC__ )
+  #include "cmsis_gcc.h"
+
+/*------------------ ICC Compiler ----------------------*/
+#elif defined ( __ICCARM__ )
+  #include <cmsis_iar.h>
+
+/*------------------ TI CCS Compiler -------------------*/
+#elif defined ( __TMS470__ )
+  #include <cmsis_ccs.h>
+
+/*------------------ TASKING Compiler ------------------*/
+#elif defined ( __TASKING__ )
+  /*
+   * The CMSIS functions have been implemented as intrinsics in the compiler.
+   * Please use "carm -?i" to get an up to date list of all intrinsics,
+   * Including the CMSIS ones.
+   */
+
+/*------------------ COSMIC Compiler -------------------*/
+#elif defined ( __CSMC__ )
+  #include <cmsis_csm.h>
+
+#endif
+
+/*@} end of group CMSIS_SIMD_intrinsics */
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __CORE_CMSIMD_H */
@@ -0,0 +1,31 @@
+import rtconfig
+Import('RTT_ROOT')
+from building import *
+
+# get current directory
+cwd = GetCurrentDir()
+
+# The set of source files associated with this SConscript file.
+src = Split("""
+CMSIS/Device/ST/STM32L0xx/Source/Templates/system_stm32l0xx.c
+""")
+
+src += Glob('STM32L0xx_HAL_Driver/Src/*.c')
+
+
+#add for startup script
+if rtconfig.CROSS_TOOL == 'gcc':
+     src = src + ['CMSIS/Device/ST/STM32L0xx/Source/Templates/gcc/startup_stm32l072xx.s']
+elif rtconfig.CROSS_TOOL == 'keil':
+     src = src + ['CMSIS/Device/ST/STM32L0xx/Source/Templates/arm/startup_stm32l072xx.s']
+elif rtconfig.CROSS_TOOL == 'iar':
+    src = src + ['CMSIS/Device/ST/STM32L0xx/Source/Templates/iar/startup_stm32l072xx.s']
+
+path = [cwd + 'STM32L0xx_HAL_Driver/Inc',
+    cwd + 'CMSIS/Device/ST/STM32L0xx/Include',
+    cwd + '/CMSIS/Include']
+
+CPPDEFINES = ['USE_HAL_DRIVER', 'STM32L0X2']
+group = DefineGroup('STM32_HAL', src, depend = [''], CPPPATH = path, CPPDEFINES = CPPDEFINES)
+
+Return('group')
@@ -0,0 +1,119 @@
+/**
+  ******************************************************************************
+  * @file    stm32l0xx_hal_flash_ramfunc.h
+  * @author  MCD Application Team
+  * @version V1.7.0
+  * @date    31-May-2016
+  * @brief   Header file of FLASH RAMFUNC driver.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32L0xx_FLASH_RAMFUNC_H
+#define __STM32L0xx_FLASH_RAMFUNC_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32l0xx_hal_def.h"
+
+/** @addtogroup STM32L0xx_HAL_Driver
+  * @{
+  */
+
+/** @defgroup FLASH_RAMFUNC FLASH Ram Function
+  * @{
+  */
+
+/* Exported functions --------------------------------------------------------*/
+
+/** @defgroup FLASH_RAMFUNC_Exported_Functions FLASH Ram Exported Functions
+  * @{
+  */
+
+/*
+  * @brief  FLASH memory functions that should be executed from internal SRAM.
+  *         These functions are defined inside the "stm32l0xx_hal_flash_ramfunc.c"
+  *         file.
+  */
+
+/** @defgroup FLASH_RAMFUNC_Exported_Functions_Group1 FLASH RAM peripheral features functions
+  * @{
+  */
+__RAM_FUNC  HAL_FLASHEx_HalfPageProgram(uint32_t Address, uint32_t* pBuffer);
+__RAM_FUNC  HAL_FLASHEx_EnableRunPowerDown(void);
+__RAM_FUNC  HAL_FLASHEx_DisableRunPowerDown(void);
+__RAM_FUNC  HAL_FLASHRAM_GetError(uint32_t * error);
+/**
+  * @}
+  */
+
+#if defined (STM32L071xx) || defined (STM32L072xx) || defined (STM32L073xx) || defined (STM32L081xx) || defined (STM32L082xx) || defined (STM32L083xx)
+/** @defgroup FLASH_RAMFUNC_Exported_Functions_Group2 FLASH RAM programming and erasing operation functions
+  * @{
+  */
+__RAM_FUNC HAL_FLASHEx_EraseParallelPage(uint32_t Page_Address1, uint32_t Page_Address2);
+__RAM_FUNC HAL_FLASHEx_ProgramParallelHalfPage(uint32_t Address1, uint32_t* pBuffer1, uint32_t Address2, uint32_t* pBuffer2);
+/**
+  * @}
+  */
+#endif /* STM32L071xx || STM32L072xx || STM32L073xx || STM32L081xx || STM32L082xx || STM32L083xx */
+
+/**
+  * @}
+  */
+
+/* Define the private group ***********************************/
+/**************************************************************/
+/** @defgroup FLASH_RAMFUNC_Private FLASH Ram Private
+  * @{
+  */
+/**
+  * @}
+  */
+/**************************************************************/
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32L0xx_FLASH_RAMFUNC_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
@@ -0,0 +1,180 @@
+/**
+  ******************************************************************************
+  * @file    stm32l0xx_hal_i2c_ex.h
+  * @author  MCD Application Team
+  * @version V1.7.0
+  * @date    31-May-2016
+  * @brief   Header file of I2C HAL Extension module.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32L0xx_HAL_I2C_EX_H
+#define __STM32L0xx_HAL_I2C_EX_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32l0xx_hal_def.h"
+
+/** @addtogroup STM32L0xx_HAL_Driver
+  * @{
+  */
+
+/** @defgroup I2CEx I2CEx
+  * @{
+  */
+
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+
+/** @defgroup I2CEx_Exported_Constants I2CEx Exported Constants
+  * @{
+  */
+
+/** @defgroup I2CEx_Analog_Filter I2C Analog Filter Enabling
+  * @{
+  */
+#define I2C_ANALOGFILTER_ENABLE        ((uint32_t)0x00000000U)
+#define I2C_ANALOGFILTER_DISABLE       I2C_CR1_ANFOFF
+/**
+  * @}
+  */
+
+/** @defgroup I2CEx_FastModePlus I2C Fast Mode Plus
+  * @{
+  */
+#define I2C_FASTMODEPLUS_PB6            SYSCFG_CFGR2_I2C_PB6_FMP  /*!< Enable Fast Mode Plus on PB6       */
+#define I2C_FASTMODEPLUS_PB7            SYSCFG_CFGR2_I2C_PB7_FMP  /*!< Enable Fast Mode Plus on PB7       */
+#define I2C_FASTMODEPLUS_PB8            SYSCFG_CFGR2_I2C_PB8_FMP  /*!< Enable Fast Mode Plus on PB8       */
+#define I2C_FASTMODEPLUS_PB9            SYSCFG_CFGR2_I2C_PB9_FMP  /*!< Enable Fast Mode Plus on PB9       */
+#define I2C_FASTMODEPLUS_I2C1           SYSCFG_CFGR2_I2C1_FMP     /*!< Enable Fast Mode Plus on I2C1 pins */
+#if !defined(STM32L011xx) && !defined(STM32L021xx) && !defined(STM32L031xx) && !defined(STM32L041xx)
+#define I2C_FASTMODEPLUS_I2C2           SYSCFG_CFGR2_I2C2_FMP     /*!< Enable Fast Mode Plus on I2C2 pins */
+#endif
+#if defined(STM32L071xx) || defined(STM32L072xx) || defined(STM32L073xx) || defined(STM32L081xx) || defined(STM32L082xx) || defined(STM32L083xx)
+#define I2C_FASTMODEPLUS_I2C3           SYSCFG_CFGR2_I2C3_FMP     /*!< Enable Fast Mode Plus on I2C3 pins */
+#endif
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/* Exported macro ------------------------------------------------------------*/
+/* Exported functions --------------------------------------------------------*/
+/** @defgroup I2CEx_Exported_Functions I2CEx Exported Functions
+  * @{
+  */
+
+/* Peripheral Control methods  ************************************************/
+
+/** @addtogroup I2CEx_Exported_Functions_Group1 Extended Features Functions
+  * @{
+  */
+HAL_StatusTypeDef HAL_I2CEx_ConfigAnalogFilter(I2C_HandleTypeDef *hi2c, uint32_t AnalogFilter);
+HAL_StatusTypeDef HAL_I2CEx_ConfigDigitalFilter(I2C_HandleTypeDef *hi2c, uint32_t DigitalFilter);
+HAL_StatusTypeDef HAL_I2CEx_EnableWakeUp(I2C_HandleTypeDef *hi2c);
+HAL_StatusTypeDef HAL_I2CEx_DisableWakeUp(I2C_HandleTypeDef *hi2c);
+void HAL_I2CEx_EnableFastModePlus(uint32_t ConfigFastModePlus);
+void HAL_I2CEx_DisableFastModePlus(uint32_t ConfigFastModePlus);
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/* Private macros ------------------------------------------------------------*/
+/** @defgroup I2CEx_Private I2CEx Private
+  * @{
+  */
+#define IS_I2C_ANALOG_FILTER(FILTER)    (((FILTER) == I2C_ANALOGFILTER_ENABLE) || \
+                                          ((FILTER) == I2C_ANALOGFILTER_DISABLE))
+
+#define IS_I2C_DIGITAL_FILTER(FILTER)   ((FILTER) <= 0x0000000FU)
+
+#if defined(STM32L031xx) || defined(STM32L041xx) || defined(STM32L011xx) || defined(STM32L021xx)
+#define IS_I2C_FASTMODEPLUS(__CONFIG__) ((((__CONFIG__) & (I2C_FASTMODEPLUS_PB6)) == I2C_FASTMODEPLUS_PB6)    || \
+                                          (((__CONFIG__) & (I2C_FASTMODEPLUS_PB7)) == I2C_FASTMODEPLUS_PB7)   || \
+                                          (((__CONFIG__) & (I2C_FASTMODEPLUS_PB8)) == I2C_FASTMODEPLUS_PB8)   || \
+                                          (((__CONFIG__) & (I2C_FASTMODEPLUS_PB9)) == I2C_FASTMODEPLUS_PB9)   || \
+                                          (((__CONFIG__) & (I2C_FASTMODEPLUS_I2C1)) == I2C_FASTMODEPLUS_I2C1))
+#elif defined(STM32L071xx) || defined(STM32L072xx) || defined(STM32L073xx) || defined(STM32L081xx) || defined(STM32L082xx) || defined(STM32L083xx)
+#define IS_I2C_FASTMODEPLUS(__CONFIG__) ((((__CONFIG__) & (I2C_FASTMODEPLUS_PB6)) == I2C_FASTMODEPLUS_PB6)    || \
+                                          (((__CONFIG__) & (I2C_FASTMODEPLUS_PB7)) == I2C_FASTMODEPLUS_PB7)   || \
+                                          (((__CONFIG__) & (I2C_FASTMODEPLUS_PB8)) == I2C_FASTMODEPLUS_PB8)   || \
+                                          (((__CONFIG__) & (I2C_FASTMODEPLUS_PB9)) == I2C_FASTMODEPLUS_PB9)   || \
+                                          (((__CONFIG__) & (I2C_FASTMODEPLUS_I2C1)) == I2C_FASTMODEPLUS_I2C1) || \
+                                          (((__CONFIG__) & (I2C_FASTMODEPLUS_I2C2)) == I2C_FASTMODEPLUS_I2C2) || \
+                                          (((__CONFIG__) & (I2C_FASTMODEPLUS_I2C3)) == I2C_FASTMODEPLUS_I2C3))
+#else
+#define IS_I2C_FASTMODEPLUS(__CONFIG__) ((((__CONFIG__) & (I2C_FASTMODEPLUS_PB6)) == I2C_FASTMODEPLUS_PB6)    || \
+                                          (((__CONFIG__) & (I2C_FASTMODEPLUS_PB7)) == I2C_FASTMODEPLUS_PB7)   || \
+                                          (((__CONFIG__) & (I2C_FASTMODEPLUS_PB8)) == I2C_FASTMODEPLUS_PB8)   || \
+                                          (((__CONFIG__) & (I2C_FASTMODEPLUS_PB9)) == I2C_FASTMODEPLUS_PB9)   || \
+                                          (((__CONFIG__) & (I2C_FASTMODEPLUS_I2C1)) == I2C_FASTMODEPLUS_I2C1) || \
+                                          (((__CONFIG__) & (I2C_FASTMODEPLUS_I2C2)) == I2C_FASTMODEPLUS_I2C2))
+#endif
+/**
+  * @}
+  */
+
+/* Define the private group ***********************************/
+/**************************************************************/
+/** @defgroup I2CEx_Private I2CEx Private
+  * @{
+  */
+/**
+  * @}
+  */
+/**************************************************************/
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32L0xx_HAL_I2C_EX_H */
+
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
@@ -0,0 +1,115 @@
+/**
+  ******************************************************************************
+  * @file    stm32l0xx_hal_pwr_ex.h
+  * @author  MCD Application Team
+  * @version V1.7.0
+  * @date    31-May-2016
+  * @brief   Header file of PWR HAL Extension module.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32L0xx_HAL_PWR_EX_H
+#define __STM32L0xx_HAL_PWR_EX_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32l0xx_hal_def.h"
+
+/** @addtogroup STM32L0xx_HAL_Driver
+  * @{
+  */
+
+/** @defgroup PWREx PWREx
+  * @{
+  */
+
+/** @defgroup PWREx_Exported_Macros PWREx Exported Macros
+ * @{
+ */
+
+/** @brief  Macros to enable the Deep-sleep mode with Flash memory kept off.
+  * @note   When entering low power mode (stop or standby only), if DS_EE_KOFF and RUN_PD of
+  *         FLASH_ACR register are both set , the Flash memory will not be woken up
+  *         when exiting from deep-sleep mode.
+  */
+#define __HAL_PWR_FLASHWAKEUP_ENABLE()      CLEAR_BIT(PWR->CR, PWR_CR_DSEEKOFF)
+
+/** @brief  Macros to disable the Deep-sleep mode with Flash memory kept off.
+  * @note   When entering low power mode (stop or standby only), if DS_EE_KOFF and RUN_PD of
+  *         FLASH_ACR register are both set , the Flash memory will not be woken up
+  *         when exiting from deep-sleep mode.
+  */
+#define __HAL_PWR_FLASHWAKEUP_DISABLE()     SET_BIT(PWR->CR, PWR_CR_DSEEKOFF)
+/**
+  * @}
+  */
+
+/** @defgroup PWREx_Exported_Functions PWREx Exported Functions
+ * @{
+ */
+void HAL_PWREx_EnableFastWakeUp(void);
+void HAL_PWREx_DisableFastWakeUp(void);
+void HAL_PWREx_EnableUltraLowPower(void);
+void HAL_PWREx_DisableUltraLowPower(void);
+void HAL_PWREx_EnableLowPowerRunMode(void);
+HAL_StatusTypeDef HAL_PWREx_DisableLowPowerRunMode(void);
+/**
+  * @}
+  */
+
+/* Define the private group ***********************************/
+/**************************************************************/
+/** @defgroup PWREx_Private PWREx Private
+  * @{
+  */
+/**
+  * @}
+  */
+/**************************************************************/
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32L0xx_HAL_PWR_EX_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
@@ -0,0 +1,191 @@
+/**
+  ******************************************************************************
+  * @file    stm32l0xx_hal_pwr_ex.c
+  * @author  MCD Application Team
+  * @version V1.7.0
+  * @date    31-May-2016
+  * @brief   Extended PWR HAL module driver.
+  *          This file provides firmware functions to manage the following
+  *          functionalities of the Power Controller (PWR) peripheral:
+  *           + Extended Initialization and de-initialization functions
+  *           + Extended Peripheral Control functions
+  *
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32l0xx_hal.h"
+
+#ifdef HAL_PWR_MODULE_ENABLED
+/** @addtogroup STM32L0xx_HAL_Driver
+  * @{
+  */
+
+/** @addtogroup PWREx
+  * @{
+  */
+
+/** @addtogroup PWREx_Private
+  * @{
+  */
+
+/** @defgroup PWR_Extended_TimeOut_Value PWREx Flag Setting Time Out Value
+  * @{
+  */
+#define PWR_FLAG_SETTING_DELAY_US 50U
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+
+/** @addtogroup PWREx_Exported_Functions
+  * @brief      Low Power modes configuration functions
+  *
+@verbatim
+
+ ===============================================================================
+                 ##### Peripheral extended features functions #####
+ ===============================================================================
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Enables the Fast WakeUp from Ultra Low Power mode.
+  * @note This bit works in conjunction with ULP bit.
+  *        Means, when ULP = 1 and FWU = 1 :VREFINT startup time is ignored when
+  *        exiting from low power mode.
+  * @retval None
+  */
+void HAL_PWREx_EnableFastWakeUp(void)
+{
+  /* Enable the fast wake up */
+  SET_BIT(PWR->CR, PWR_CR_FWU);
+}
+
+/**
+  * @brief  Disables the Fast WakeUp from Ultra Low Power mode.
+  * @retval None
+  */
+void HAL_PWREx_DisableFastWakeUp(void)
+{
+  /* Disable the fast wake up */
+  CLEAR_BIT(PWR->CR, PWR_CR_FWU);
+}
+
+/**
+  * @brief  Enables the Ultra Low Power mode
+  * @retval None
+  */
+void HAL_PWREx_EnableUltraLowPower(void)
+{
+  /* Enable the Ultra Low Power mode */
+  SET_BIT(PWR->CR, PWR_CR_ULP);
+}
+
+/**
+  * @brief  Disables the Ultra Low Power mode
+  * @retval None
+  */
+void HAL_PWREx_DisableUltraLowPower(void)
+{
+  /* Disable the Ultra Low Power mode */
+  CLEAR_BIT(PWR->CR, PWR_CR_ULP);
+}
+
+/**
+  * @brief  Enable the Low Power Run mode.
+  * @note   Low power run mode can only be entered when VCORE is in range 2.
+  *         In addition, the dynamic voltage scaling must not be used when Low
+  *         power run mode is selected. Only Stop and Sleep modes with regulator
+  *         configured in Low power mode is allowed when Low power run mode is
+  *         selected.
+  * @note   The frequency of the system clock must be decreased to not exceed the
+  *         frequency of RCC_MSIRANGE_1.
+  * @note   In Low power run mode, all I/O pins keep the same state as in Run mode.
+  * @retval None
+  */
+void HAL_PWREx_EnableLowPowerRunMode(void)
+{
+  /* Enters the Low Power Run mode */
+  SET_BIT(PWR->CR, PWR_CR_LPSDSR);
+  SET_BIT(PWR->CR, PWR_CR_LPRUN);
+}
+
+/**
+  * @brief  Disable the Low Power Run mode.
+  * @note  Before HAL_PWREx_DisableLowPowerRunMode() completion, the function checks that
+  *        REGLPF has been properly reset (otherwise, HAL_PWREx_DisableLowPowerRunMode
+  *        returns HAL_TIMEOUT status). The system clock frequency can then be
+  *        increased above 2 MHz.
+  * @retval HAL_StatusTypeDef
+  */
+HAL_StatusTypeDef HAL_PWREx_DisableLowPowerRunMode(void)
+{
+  uint32_t wait_loop_index = 0U;
+
+  /* Exit the Low Power Run mode */
+  CLEAR_BIT(PWR->CR, PWR_CR_LPRUN);
+  CLEAR_BIT(PWR->CR, PWR_CR_LPSDSR);
+
+  /* Wait until REGLPF is reset */
+  wait_loop_index = (PWR_FLAG_SETTING_DELAY_US * (SystemCoreClock / 1000000U));
+
+  while ((wait_loop_index != 0U) && (HAL_IS_BIT_SET(PWR->CSR, PWR_CSR_REGLPF)))
+  {
+    wait_loop_index--;
+  }
+
+  if (HAL_IS_BIT_SET(PWR->CSR, PWR_CSR_REGLPF))
+  {
+    return HAL_TIMEOUT;
+  }
+
+  return HAL_OK;
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+#endif /* HAL_PWR_MODULE_ENABLED */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
@@ -0,0 +1,57 @@
+/**
+  ******************************************************************************
+  * File Name          : mxconstants.h
+  * Description        : This file contains the common defines of the application
+  ******************************************************************************
+  *
+  * COPYRIGHT(c) 2016 STMicroelectronics
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __MXCONSTANT_H
+#define __MXCONSTANT_H
+  /* Includes ------------------------------------------------------------------*/
+
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+/* Private define ------------------------------------------------------------*/
+
+/* USER CODE BEGIN Private defines */
+
+/* USER CODE END Private defines */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+*/
+
+#endif /* __MXCONSTANT_H */
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
@@ -0,0 +1,60 @@
+/**
+  ******************************************************************************
+  * @file    stm32l0xx_it.h
+  * @brief   This file contains the headers of the interrupt handlers.
+  ******************************************************************************
+  *
+  * COPYRIGHT(c) 2016 STMicroelectronics
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32L0xx_IT_H
+#define __STM32L0xx_IT_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+/* Exported macro ------------------------------------------------------------*/
+/* Exported functions ------------------------------------------------------- */
+
+void NMI_Handler(void);
+void HardFault_Handler(void);
+void SVC_Handler(void);
+void PendSV_Handler(void);
+void SysTick_Handler(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32L0xx_IT_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
@@ -0,0 +1,14 @@
+# for module compiling
+import os
+Import('RTT_ROOT')
+
+cwd = str(Dir('#'))
+objs = []
+list = os.listdir(cwd)
+
+for d in list:
+    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(path, 'SConscript')):
+        objs = objs + SConscript(os.path.join(d, 'SConscript'))
+
+Return('objs')
@@ -0,0 +1,34 @@
+import os
+import sys
+import rtconfig
+
+if os.getenv('RTT_ROOT'):
+    RTT_ROOT = os.getenv('RTT_ROOT')
+else:
+    RTT_ROOT = os.path.normpath(os.getcwd() + '/../..')
+
+sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
+from building import *
+
+TARGET = 'rtthread-stm32f0xx.' + rtconfig.TARGET_EXT
+
+env = Environment(tools = ['mingw'],
+	AS = rtconfig.AS, ASFLAGS = rtconfig.AFLAGS,
+	CC = rtconfig.CC, CCFLAGS = rtconfig.CFLAGS,
+	AR = rtconfig.AR, ARFLAGS = '-rc',
+	LINK = rtconfig.LINK, LINKFLAGS = rtconfig.LFLAGS)
+env.PrependENVPath('PATH', rtconfig.EXEC_PATH)
+
+if rtconfig.PLATFORM == 'iar':
+	env.Replace(CCCOM = ['$CC $CCFLAGS $CPPFLAGS $_CPPDEFFLAGS $_CPPINCFLAGS -o $TARGET $SOURCES'])
+	env.Replace(ARFLAGS = [''])
+	env.Replace(LINKCOM = ['$LINK $SOURCES $LINKFLAGS -o $TARGET --map project.map'])
+
+Export('RTT_ROOT')
+Export('rtconfig')
+
+# prepare building environment
+objs = PrepareBuilding(env, RTT_ROOT, has_libcpu=False)
+
+# make a building
+DoBuilding(TARGET, objs)
@@ -0,0 +1,17 @@
+Import('RTT_ROOT')
+Import('rtconfig')
+from building import *
+
+cwd     = os.path.join(str(Dir('#')), 'app')
+src	= Glob('*.c')
+path = [cwd,
+	cwd + '/..',
+	cwd + '/../board',
+	cwd + '/../Drivers/CMSIS/Device/ST/STM32L0xx/Include',
+	cwd + '/../Drivers/STM32L0xx_HAL_Driver/Inc',
+	cwd + '/../Inc'
+	]
+
+group = DefineGroup('Applications', src, depend = [''], CPPPATH = path)
+
+Return('group')
@@ -0,0 +1,73 @@
+/*
+ * File      : application.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2006, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2009-01-05     Bernard      the first version
+ * 2013-11-15     bright       add init thread and components initial
+ */
+
+/**
+ * @addtogroup STM32
+ */
+/*@{*/
+
+#include <stdio.h>
+#include <rthw.h>
+#include <rtdevice.h>
+#include "board.h"
+#include <rtthread.h>
+#ifdef  RT_USING_COMPONENTS_INIT
+#include <components.h>
+#endif  /* RT_USING_COMPONENTS_INIT */
+
+static void rt_init_thread_entry(void* parameter)
+{
+extern void led_thread_entry(void* parameter);
+	rt_thread_t thread;
+
+/* Initialization RT-Thread Components */
+#ifdef RT_USING_COMPONENTS_INIT
+    rt_components_init();
+#endif
+
+/* Set finsh device */
+#ifdef  RT_USING_FINSH
+    finsh_set_device(RT_CONSOLE_DEVICE_NAME);
+#endif  /* RT_USING_FINSH */
+
+    /* Create led thread */
+    thread = rt_thread_create("led",
+		led_thread_entry, RT_NULL,
+		256, 20, 20);
+    if(thread != RT_NULL)
+	rt_thread_startup(thread);
+}
+
+int rt_application_init()
+{
+	rt_thread_t init_thread;
+
+#if (RT_THREAD_PRIORITY_MAX == 32)
+    init_thread = rt_thread_create("init",
+                                   rt_init_thread_entry, RT_NULL,
+                                   512, 8, 20);
+#else
+    init_thread = rt_thread_create("init",
+                                   rt_init_thread_entry, RT_NULL,
+                                   512, 80, 20);
+#endif
+    if(init_thread != RT_NULL)
+	rt_thread_startup(init_thread);
+
+    return 0;
+}
+
+
+/*@}*/
@@ -0,0 +1,24 @@
+#include <stdio.h>
+#include <rthw.h>
+#include <rtdevice.h>
+#include "board.h"
+#include <rtthread.h>
+#ifdef  RT_USING_COMPONENTS_INIT
+#include <components.h>
+#endif  /* RT_USING_COMPONENTS_INIT */
+/* led thread entry */
+#define PINRX 22
+#define PINTX 21
+void led_thread_entry(void* parameter)
+{
+    rt_pin_mode(PINRX, GPIO_MODE_OUTPUT_PP);
+    rt_pin_mode(PINTX, GPIO_MODE_OUTPUT_PP);
+    rt_pin_write(PINRX,1);
+    rt_pin_write(PINTX,0);
+	while(1)
+	{
+        rt_thread_delay(RT_TICK_PER_SECOND);
+        rt_pin_write(PINRX,rt_pin_read(PINRX)?0:1);
+        rt_pin_write(PINTX,rt_pin_read(PINTX)?0:1);
+	}
+}
@@ -0,0 +1,118 @@
+/*
+ * File      : startup.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2006, RT-Thread Develop Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://openlab.rt-thread.com/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2006-08-31     Bernard      first implementation
+ * 2013-11-15     bright       modify for stm32f0xx version and components initial
+ */
+
+#include <rthw.h>
+#include <rtthread.h>
+
+#include "board.h"
+
+/**
+ * @addtogroup STM32
+ */
+
+/*@{*/
+
+extern int  rt_application_init(void);
+#ifdef RT_USING_FINSH
+extern void finsh_system_init(void);
+extern void finsh_set_device(const char* device);
+#endif
+
+#ifdef __CC_ARM
+extern int Image$$RW_IRAM1$$ZI$$Limit;
+#define STM32_SRAM_BEGIN    (&Image$$RW_IRAM1$$ZI$$Limit)
+#elif __ICCARM__
+#pragma section="HEAP"
+#define STM32_SRAM_BEGIN    (__segment_end("HEAP"))
+#else
+extern int __bss_end;
+#define STM32_SRAM_BEGIN    (&__bss_end)
+#endif
+
+/*******************************************************************************
+* Function Name  : assert_failed
+* Description    : Reports the name of the source file and the source line number
+*                  where the assert error has occurred.
+* Input          : - file: pointer to the source file name
+*                  - line: assert error line source number
+* Output         : None
+* Return         : None
+*******************************************************************************/
+void assert_failed(uint8_t* file, uint32_t line)
+{
+	rt_kprintf("\n\r Wrong parameter value detected on\r\n");
+	rt_kprintf("       file  %s\r\n", file);
+	rt_kprintf("       line  %d\r\n", line);
+
+	while (1) ;
+}
+
+/**
+ * This function will startup RT-Thread RTOS.
+ */
+void rtthread_startup(void)
+{
+	/* init board */
+	rt_hw_board_init();
+
+	/* show version */
+	rt_show_version();
+
+	/* init tick */
+	rt_system_tick_init();
+
+	/* init kernel object */
+	rt_system_object_init();
+
+	/* init timer system */
+	rt_system_timer_init();
+
+#ifdef RT_USING_HEAP
+    rt_system_heap_init((void*)STM32_SRAM_BEGIN, (void*)STM32_SRAM_END);
+#endif
+
+	/* init scheduler system */
+	rt_system_scheduler_init();
+
+	/* init application */
+	rt_application_init();
+
+    /* init timer thread */
+    rt_system_timer_thread_init();
+
+	/* init idle thread */
+	rt_thread_idle_init();
+
+	/* start scheduler */
+	rt_system_scheduler_start();
+
+	/* never reach here */
+	return ;
+}
+
+
+
+int main(void)
+{
+	/* disable interrupt first */
+	rt_hw_interrupt_disable();
+
+	/* startup RT-Thread RTOS */
+	rtthread_startup();
+
+	return 0;
+}
+
+/*@}*/
@@ -0,0 +1,27 @@
+Import('RTT_ROOT')
+Import('rtconfig')
+from building import *
+
+cwd     = os.path.join(str(Dir('#')), 'drivers')
+
+# add the general drivers.
+src = Split("""
+board.c
+stm32l0xx_it.c
+usart.c
+""")
+
+# add gpio drivers.
+if GetDepend('RT_USING_PIN'):
+    src += ['gpio.c']
+
+# add spi drivers.
+if GetDepend('RT_USING_SPI'):
+    src += ['drv_spi.c']
+
+CPPPATH = [cwd,
+	cwd + '../Drivers/CMSIS/Device/ST/STM32L0xx/Include']
+
+group = DefineGroup('Drivers', src, depend = [''], CPPPATH = CPPPATH)
+
+Return('group')
@@ -0,0 +1,171 @@
+/*
+ * File      : board.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2009 RT-Thread Develop Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2009-01-05     Bernard      first implementation
+ * 2013-11-15     bright       add RCC initial and print RCC freq function
+ */
+
+#include <rthw.h>
+#include <rtthread.h>
+
+#include "board.h"
+#include "usart.h"
+/* RT_USING_COMPONENTS_INIT */
+#ifdef  RT_USING_COMPONENTS_INIT
+#include <components.h>
+#endif
+/**
+ * @addtogroup STM32
+ */
+
+/*@{*/
+
+/*******************************************************************************
+* Function Name  : NVIC_Configuration
+* Description    : Configures Vector Table base location.
+* Input          : None
+* Output         : None
+* Return         : None
+*******************************************************************************/
+void NVIC_Configuration(void)
+{
+//    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
+}
+
+/**
+* @brief  Inserts a delay time.
+* @param  nCount: specifies the delay time length.
+* @retval None
+*/
+static void Delay(__IO uint32_t nCount)
+{
+	/* Decrement nCount value */
+	while (nCount != 0)
+	{
+		nCount--;
+	}
+}
+
+/**
+ * This RCC initial for system.
+ * use HSE clock source
+ * HSE = 20MHZ; sysclk = 20MHZ
+ * sysclk source is HSE
+ * AHB prescaler is 1, HCLK = SYSCKL = SystemCoreClock = 20MHZ
+ */
+static void RCC_Configuration(void)
+{
+
+    RCC_OscInitTypeDef OscInit;
+	HAL_RCC_DeInit();
+    OscInit.OscillatorType = RCC_OSCILLATORTYPE_HSI;
+    OscInit.HSIState = RCC_HSI_ON;
+    OscInit.PLL.PLLState = RCC_PLL_ON;
+    OscInit.PLL.PLLDIV = RCC_PLLDIV_2;
+    OscInit.PLL.PLLMUL = RCC_PLLMUL_4;
+    OscInit.PLL.PLLSource = RCC_PLLSOURCE_HSI;
+    HAL_RCC_OscConfig(&OscInit);
+
+    RCC_ClkInitTypeDef ClkInit;
+    ClkInit.ClockType = RCC_CLOCKTYPE_SYSCLK |
+                        RCC_CLOCKTYPE_HCLK |
+                        RCC_CLOCKTYPE_PCLK1 |
+                        RCC_CLOCKTYPE_PCLK2;
+
+    ClkInit.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
+    ClkInit.AHBCLKDivider = 0;
+    ClkInit.APB1CLKDivider = 0;
+    ClkInit.APB2CLKDivider = 0;
+    HAL_RCC_ClockConfig(&ClkInit, 1);
+
+	Delay(0x3FFFF);
+	/* Update SystemCoreClock value from RCC configure */
+	SystemCoreClockUpdate();
+}
+
+#ifdef PRINT_RCC_FREQ_INFO
+/**
+ * print RCC freq information
+ *
+ * for example:
+ *
+ * SYSCLK_Frequency is 48000000HZ
+ * PCLK_Frequency is 48000000HZ
+ * HCLK_Frequency is 48000000HZ
+ * CECCLK_Frequency is 32786HZ
+ * ADCCLK_Frequency is 14000000HZ
+ * USART1CLK_Frequency is 48000000HZ
+ * I2C1CLK_Frequency is 8000000HZ
+ * SystemCoreClock is 48000000HZ
+ *
+ */
+void print_rcc_freq_info(void)
+{
+    rt_uint32_t clkval;
+
+    clkval = HAL_RCC_GetSysClockFreq();//sysclk
+    rt_kprintf("\nSYSCLK_Frequency is %dHZ", clkval);
+    clkval = HAL_RCC_GetHCLKFreq();    //Hclk
+    rt_kprintf("\nHCLK_Frequency is %dHZ", clkval);
+    clkval = HAL_RCC_GetPCLK1Freq();   //pclk1
+    rt_kprintf("\nPCLK1_Frequency is %dHZ", clkval);
+    clkval = HAL_RCC_GetPCLK2Freq();   //pclk2
+    rt_kprintf("\nPCLK2_Frequency is %dHZ", clkval);
+}
+#endif
+
+/**
+ * This is the timer interrupt service routine.
+ *
+ */
+void SysTick_Handler(void)
+{
+	/* enter interrupt */
+	rt_interrupt_enter();
+
+	rt_tick_increase();
+
+	/* leave interrupt */
+	rt_interrupt_leave();
+}
+/**
+ * This function will initial STM32 board.
+ */
+void rt_hw_board_init()
+{
+	/* NVIC Configuration */
+	NVIC_Configuration();
+
+	/* Configure the SysTick */
+	RCC_Configuration();
+	SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND);
+
+    /* Call components board initial (use INIT_BOARD_EXPORT()) */
+#ifdef RT_USING_COMPONENTS_INIT
+    rt_components_board_init();
+#endif
+#ifdef RT_USING_CONSOLE
+	rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
+#endif
+    /* Print RCC freq info */
+#ifdef PRINT_RCC_FREQ_INFO
+	print_rcc_freq_info();
+#endif
+}
+
+long cmd_reset(int argc, char** argv)
+{
+    HAL_NVIC_SystemReset();
+    return 0;
+}
+FINSH_FUNCTION_EXPORT_ALIAS(cmd_reset, __cmd_reset, Reset Board.);
+
+/*@}*/
@@ -0,0 +1,72 @@
+/*
+ * File      : board.h
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2009, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2009-09-22     Bernard      add board.h to this bsp
+ * 2013-11-15     bright       fix SRAM size for heap management
+ */
+
+// <<< Use Configuration Wizard in Context Menu >>>
+#ifndef __BOARD_H__
+#define __BOARD_H__
+
+#include <stm32l0xx.h>
+
+/* board configuration */
+// <o> SDCard Driver <1=>SDIO sdcard <0=>SPI MMC card
+// 	<i>Default: 1
+#define STM32_USE_SDIO			0
+
+/* whether use board external SRAM memory */
+// <e>Use external SRAM memory on the board
+// 	<i>Enable External SRAM memory
+#define STM32_EXT_SRAM          0
+//	<o>Begin Address of External SRAM
+//		<i>Default: 0x68000000
+#define STM32_EXT_SRAM_BEGIN    0x68000000 /* the begining address of external SRAM */
+//	<o>End Address of External SRAM
+//		<i>Default: 0x68080000
+#define STM32_EXT_SRAM_END      0x68080000 /* the end address of external SRAM */
+// </e>
+
+// <o> Internal SRAM memory size[Kbytes] <8-64>
+//	<i>Default: 64
+#define STM32_SRAM_SIZE         20
+#define STM32_SRAM_END          (0x20000000 + STM32_SRAM_SIZE * 1024)
+
+void rt_hw_board_init(void);
+
+/* SD Card init function */
+void rt_hw_msd_init(void);
+
+#define PRINT_RCC_FREQ_INFO
+#define UFQFPN32
+
+#ifdef RT_USING_PIN
+extern inline void stm32_pin_write_early(rt_base_t pin, rt_base_t value);
+extern inline int stm32_pin_read_early(rt_base_t pin);
+extern void stm32_pin_mode_early(rt_base_t pin, rt_base_t mode);
+#endif /*RT_USING_PIN*/
+
+#define RT_USING_UART1
+#define UART1_GPIO_TX			19
+#define UART1_GPIO_RX			20
+#define UART1_GPIO_AF			GPIO_AF4_USART1
+
+#define RT_USING_SPI1
+#define SPI1PINNSS   8
+#define SPI1PINSCK   11
+#define SPI1PINMOSI  12
+#define SPI1PINMISO  13
+
+#define RT_USING_SI4438
+#define SI4438_SDN   7
+
+#endif
@@ -0,0 +1,89 @@
+/**
+  ******************************************************************************
+  * @file    stm32l0xx_it.c
+  * @brief   Interrupt Service Routines.
+  ******************************************************************************
+  *
+  * COPYRIGHT(c) 2016 STMicroelectronics
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+/* Includes ------------------------------------------------------------------*/
+#include "stm32l0xx_hal.h"
+#include "stm32l0xx.h"
+#include "stm32l0xx_it.h"
+
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+/* External variables --------------------------------------------------------*/
+
+/******************************************************************************/
+/*            Cortex-M0+ Processor Interruption and Exception Handlers         */
+/******************************************************************************/
+
+/**
+* @brief This function handles Non maskable Interrupt.
+*/
+void NMI_Handler(void)
+{
+  /* USER CODE BEGIN NonMaskableInt_IRQn 0 */
+
+  /* USER CODE END NonMaskableInt_IRQn 0 */
+  /* USER CODE BEGIN NonMaskableInt_IRQn 1 */
+
+  /* USER CODE END NonMaskableInt_IRQn 1 */
+}
+
+
+/**
+* @brief This function handles System service call via SWI instruction.
+*/
+void SVC_Handler(void)
+{
+  /* USER CODE BEGIN SVC_IRQn 0 */
+
+  /* USER CODE END SVC_IRQn 0 */
+  /* USER CODE BEGIN SVC_IRQn 1 */
+
+  /* USER CODE END SVC_IRQn 1 */
+}
+
+/**
+* @brief This function handles Pendable request for system service.
+*/
+
+/******************************************************************************/
+/* STM32L0xx Peripheral Interrupt Handlers                                    */
+/* Add here the Interrupt Handlers for the used peripherals.                  */
+/* For the available peripheral interrupt handler names,                      */
+/* please refer to the startup file (startup_stm32l0xx.s).                    */
+/******************************************************************************/
+
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
@@ -0,0 +1,27 @@
+/*
+ * File      : usart.h
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2009, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2013-11-15     bright       the first version
+ */
+
+#ifndef __USART_H__
+#define __USART_H__
+
+#include <rthw.h>
+#include <rtthread.h>
+#include "stm32l0xx.h"
+
+
+
+#define UART_ENABLE_IRQ(n)            HAL_NVIC_EnableIRQ((n))
+#define UART_DISABLE_IRQ(n)           HAL_NVIC_DisableIRQ((n))
+
+#endif
@@ -0,0 +1,97 @@
+/* RT-Thread config file */
+#ifndef __RTTHREAD_CFG_H__
+#define __RTTHREAD_CFG_H__
+
+/* RT_NAME_MAX*/
+#define RT_NAME_MAX	   8
+
+/* RT_ALIGN_SIZE*/
+#define RT_ALIGN_SIZE	4
+
+/* PRIORITY_MAX */
+#define RT_THREAD_PRIORITY_MAX	32
+
+/* Tick per Second */
+#define RT_TICK_PER_SECOND	1000
+
+/* SECTION: RT_DEBUG */
+/* Thread Debug */
+//#define RT_DEBUG
+//#define RT_DEBUG_INIT 1
+//#define RT_USING_OVERFLOW_CHECK
+
+/* Using Hook */
+/* #define RT_USING_HOOK */
+
+/* Using Software Timer */
+/* #define RT_USING_TIMER_SOFT */
+#define RT_TIMER_THREAD_PRIO		4
+#define RT_TIMER_THREAD_STACK_SIZE	512
+#define RT_TIMER_TICK_PER_SECOND	10
+
+/* SECTION: IPC */
+/* Using Semaphore*/
+#define RT_USING_SEMAPHORE
+
+/* Using Mutex */
+#define RT_USING_MUTEX
+
+/* Using Event */
+#define RT_USING_EVENT
+
+/* Using MailBox */
+/* #define RT_USING_MAILBOX */
+
+/* Using Message Queue */
+/* #define RT_USING_MESSAGEQUEUE */
+
+/* SECTION: Memory Management */
+/* Using Memory Pool Management*/
+/* #define RT_USING_MEMPOOL */
+
+/* Using Dynamic Heap Management */
+#define RT_USING_HEAP
+
+/* Using Small MM */
+#define RT_USING_SMALL_MEM
+#define RT_USING_TINY_SIZE
+
+// <bool name="RT_USING_COMPONENTS_INIT" description="Using RT-Thread components initialization" default="true" />
+#define RT_USING_COMPONENTS_INIT
+
+/* SECTION: Device System */
+/* Using Device System */
+#define RT_USING_DEVICE
+// <bool name="RT_USING_DEVICE_IPC" description="Using device communication" default="true" />
+#define RT_USING_DEVICE_IPC
+// <bool name="RT_USING_SERIAL" description="Using Serial" default="true" />
+#define RT_USING_SERIAL
+#define RT_USING_HOOK
+#define RT_USING_CPU_USAGE
+/* SECTION: Console options */
+#define RT_USING_CONSOLE
+#define RT_USING_RTTTERMINAL
+/* the buffer size of console*/
+#define RT_CONSOLEBUF_SIZE	128
+// <string name="RT_CONSOLE_DEVICE_NAME" description="The device name for console" default="uart1" />
+#define RT_CONSOLE_DEVICE_NAME	    "uart1"
+
+
+/* SECTION: finsh, a C-Express shell */
+#define RT_USING_FINSH
+#define RT_FINSHPROMRT_SIZE 16
+/* configure finsh parameters */
+#define FINSH_THREAD_PRIORITY 25
+#define FINSH_THREAD_STACK_SIZE	512
+#define FINSH_HISTORY_LINES	1
+/* Using symbol table */
+#define FINSH_USING_SYMTAB
+//#define FINSH_USING_DESCRIPTION
+#define FINSH_USING_MSH
+#define FINSH_USING_MSH_ONLY
+
+#define RT_USING_PIN
+#define RT_USING_SPI
+#define RT_DBG_APP
+
+#endif
@@ -0,0 +1,128 @@
+import os
+
+# toolchains options
+ARCH='arm'
+CPU='cortex-m0'
+CROSS_TOOL='gcc'
+
+if os.getenv('RTT_CC'):
+	CROSS_TOOL = os.getenv('RTT_CC')
+
+# cross_tool provides the cross compiler
+# EXEC_PATH is the compiler execute path, for example, CodeSourcery, Keil MDK, IAR
+if  CROSS_TOOL == 'gcc':
+    PLATFORM 	= 'gcc'
+    EXEC_PATH 	= 'G:/iot/camera_studio-win32-20160903/camera_studio/tools/arm-2014.05/bin'
+elif CROSS_TOOL == 'keil':
+    print '================ERROR============================'
+    print 'Not support iar yet!'
+    print '================================================='
+    exit(0)
+elif CROSS_TOOL == 'iar':
+    print '================ERROR============================'
+    print 'Not support iar yet!'
+    print '================================================='
+    exit(0)
+
+if os.getenv('RTT_EXEC_PATH'):
+	EXEC_PATH = os.getenv('RTT_EXEC_PATH')
+
+#BUILD = 'debug'
+BUILD = 'release'
+STM32_TYPE = 'STM32L0XX'
+
+if PLATFORM == 'gcc':
+    # toolchains
+    PREFIX = 'arm-none-eabi-'
+    CC = PREFIX + 'gcc'
+    AS = PREFIX + 'gcc'
+    AR = PREFIX + 'ar'
+    LINK = PREFIX + 'gcc'
+    TARGET_EXT = 'axf'
+    SIZE = PREFIX + 'size'
+    OBJDUMP = PREFIX + 'objdump'
+    OBJCPY = PREFIX + 'objcopy'
+
+    DEVICE = ' -mcpu=cortex-m0 -mthumb -ffunction-sections -fdata-sections'
+    CFLAGS = DEVICE  + ' -DSTM32L072xx' + ' -DNULL=0'
+    AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp'
+    LFLAGS = DEVICE + ' -Wl,--gc-sections,-Map=rtthread-stm32.map,-cref,-u,Reset_Handler -T stm32_rom.ld'
+
+    CPATH = ''
+    LPATH = ''
+
+    if BUILD == 'debug':
+        CFLAGS += ' -O0 -gdwarf-2'
+        AFLAGS += ' -gdwarf-2'
+    else:
+        CFLAGS += ' -O2'
+
+    POST_ACTION = OBJCPY + ' -O binary $TARGET rtthread.bin\n' + SIZE + ' $TARGET \n'
+
+elif PLATFORM == 'armcc':
+    # toolchains
+    CC = 'armcc'
+    AS = 'armasm'
+    AR = 'armar'
+    LINK = 'armlink'
+    TARGET_EXT = 'axf'
+
+    DEVICE = ' --device DARMSTM'
+    CFLAGS = DEVICE + ' --apcs=interwork'
+    AFLAGS = DEVICE
+    LFLAGS = DEVICE + ' --info sizes --info totals --info unused --info veneers --list rtthread-stm32.map --scatter stm32_rom.sct'
+
+    CFLAGS += ' -I./'
+
+    EXEC_PATH += '/ARM/bin/'
+
+    if BUILD == 'debug':
+        CFLAGS += ' -g -O0'
+        AFLAGS += ' -g'
+    else:
+        CFLAGS += ' -O2'
+
+    POST_ACTION = 'fromelf --bin $TARGET --output rtthread.bin \nfromelf -z $TARGET'
+
+elif PLATFORM == 'iar':
+    # toolchains
+    CC = 'iccarm'
+    AS = 'iasmarm'
+    AR = 'iarchive'
+    LINK = 'ilinkarm'
+    TARGET_EXT = 'out'
+
+    DEVICE = ' -D USE_STDPERIPH_DRIVER' + ' -D STM32F10X_HD'
+
+    CFLAGS = DEVICE
+    CFLAGS += ' --diag_suppress Pa050'
+    CFLAGS += ' --no_cse'
+    CFLAGS += ' --no_unroll'
+    CFLAGS += ' --no_inline'
+    CFLAGS += ' --no_code_motion'
+    CFLAGS += ' --no_tbaa'
+    CFLAGS += ' --no_clustering'
+    CFLAGS += ' --no_scheduling'
+    CFLAGS += ' --debug'
+    CFLAGS += ' --endian=little'
+    CFLAGS += ' --cpu=Cortex-M0'
+    CFLAGS += ' -e'
+    CFLAGS += ' --fpu=None'
+    CFLAGS += ' --dlib_config "' + IAR_PATH + '/arm/INC/c/DLib_Config_Normal.h"'
+    CFLAGS += ' -Ol'
+    CFLAGS += ' --use_c++_inline'
+
+    AFLAGS = ''
+    AFLAGS += ' -s+'
+    AFLAGS += ' -w+'
+    AFLAGS += ' -r'
+    AFLAGS += ' --cpu Cortex-M0'
+    AFLAGS += ' --fpu None'
+
+    LFLAGS = ' --config stm32l0xx_flash.icf'
+    LFLAGS += ' --redirect _Printf=_PrintfTiny'
+    LFLAGS += ' --redirect _Scanf=_ScanfSmall'
+    LFLAGS += ' --entry __iar_program_start'
+
+    EXEC_PATH = IAR_PATH + '/arm/bin/'
+    POST_ACTION = ''
@@ -0,0 +1,141 @@
+/*
+ * linker script for STM32F0x with GNU ld
+ * bernard.xiong 2009-10-14
+ */
+
+/* Program Entry, set to mark it as "used" and avoid gc */
+MEMORY
+{
+    CODE (rx) : ORIGIN = 0x08000000, LENGTH = 128k /* 128KB flash */
+    DATA (rw) : ORIGIN = 0x20000000, LENGTH = 20k /* 20K sram */
+}
+ENTRY(Reset_Handler)
+_system_stack_size = 0x100;
+
+SECTIONS
+{
+    .text :
+    {
+        . = ALIGN(4);
+        KEEP(*(.isr_vector))            /* Startup code */
+        . = ALIGN(4);
+        *(.text)                        /* remaining code */
+        *(.text.*)                      /* remaining code */
+        *(.rodata)                      /* read-only data (constants) */
+        *(.rodata*)
+        *(.glue_7)
+        *(.glue_7t)
+        *(.gnu.linkonce.t*)
+
+        /* section information for finsh shell */
+        . = ALIGN(4);
+        __fsymtab_start = .;
+        KEEP(*(FSymTab))
+        __fsymtab_end = .;
+        . = ALIGN(4);
+        __vsymtab_start = .;
+        KEEP(*(VSymTab))
+        __vsymtab_end = .;
+        . = ALIGN(4);
+
+        /* section information for initial. */
+        . = ALIGN(4);
+        __rt_init_start = .;
+        KEEP(*(SORT(.rti_fn*)))
+        __rt_init_end = .;
+        . = ALIGN(4);
+
+        . = ALIGN(4);
+        _etext = .;
+    } > CODE = 0
+
+    /* .ARM.exidx is sorted, so has to go in its own output section.  */
+    __exidx_start = .;
+    .ARM.exidx :
+    {
+        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+
+        /* This is used by the startup in order to initialize the .data secion */
+        _sidata = .;
+    } > CODE
+    __exidx_end = .;
+
+    /* .data section which is used for initialized data */
+
+    .data : AT (_sidata)
+    {
+        . = ALIGN(4);
+        /* This is used by the startup in order to initialize the .data secion */
+        _sdata = . ;
+
+        *(.data)
+        *(.data.*)
+        *(.gnu.linkonce.d*)
+
+        . = ALIGN(4);
+        /* This is used by the startup in order to initialize the .data secion */
+        _edata = . ;
+    } >DATA
+
+    .stack :
+    {
+        . = . + _system_stack_size;
+        . = ALIGN(4);
+        _estack = .;
+    } >DATA
+
+    __bss_start = .;
+    .bss :
+    {
+        . = ALIGN(4);
+        /* This is used by the startup in order to initialize the .bss secion */
+        _sbss = .;
+
+        *(.bss)
+        *(.bss.*)
+        *(COMMON)
+
+        . = ALIGN(4);
+        /* This is used by the startup in order to initialize the .bss secion */
+        _ebss = . ;
+
+        *(.bss.init)
+    } > DATA
+    __bss_end = .;
+
+    _end = .;
+
+    /* Stabs debugging sections.  */
+    .stab          0 : { *(.stab) }
+    .stabstr       0 : { *(.stabstr) }
+    .stab.excl     0 : { *(.stab.excl) }
+    .stab.exclstr  0 : { *(.stab.exclstr) }
+    .stab.index    0 : { *(.stab.index) }
+    .stab.indexstr 0 : { *(.stab.indexstr) }
+    .comment       0 : { *(.comment) }
+    /* DWARF debug sections.
+     * Symbols in the DWARF debugging sections are relative to the beginning
+     * of the section so we begin them at 0.  */
+    /* DWARF 1 */
+    .debug          0 : { *(.debug) }
+    .line           0 : { *(.line) }
+    /* GNU DWARF 1 extensions */
+    .debug_srcinfo  0 : { *(.debug_srcinfo) }
+    .debug_sfnames  0 : { *(.debug_sfnames) }
+    /* DWARF 1.1 and DWARF 2 */
+    .debug_aranges  0 : { *(.debug_aranges) }
+    .debug_pubnames 0 : { *(.debug_pubnames) }
+    /* DWARF 2 */
+    .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
+    .debug_abbrev   0 : { *(.debug_abbrev) }
+    .debug_line     0 : { *(.debug_line) }
+    .debug_frame    0 : { *(.debug_frame) }
+    .debug_str      0 : { *(.debug_str) }
+    .debug_loc      0 : { *(.debug_loc) }
+    .debug_macinfo  0 : { *(.debug_macinfo) }
+    /* SGI/MIPS DWARF 2 extensions */
+    .debug_weaknames 0 : { *(.debug_weaknames) }
+    .debug_funcnames 0 : { *(.debug_funcnames) }
+    .debug_typenames 0 : { *(.debug_typenames) }
+    .debug_varnames  0 : { *(.debug_varnames) }
+}
@@ -0,0 +1,14 @@
+; *************************************************************
+; *** Scatter-Loading Description File generated by uVision ***
+; *************************************************************
+
+LR_IROM1 0x08000000 0x00020000  {    ; load region size_region
+  ER_IROM1 0x08000000 0x00020000  {  ; load address = execution address
+   *.o (RESET, +First)
+   *(InRoot$$Sections)
+   .ANY (+RO)
+  }
+  RW_IRAM1 0x20000000 0x00005000  {  ; RW data
+   .ANY (+RW +ZI)
+  }
+}