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*** EFM32 branch ***

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1. Add interrupt context check function (context_gcc.S)
2. Add lock (semaphore) for IIC, USART and Ethernet drivers to prevent simultaneously access
3. Add multiple channels support for scan mode of ADC driver
4. Modify miscellaneous drivers according to ADC driver changes
5. Add SWO output enable function (board.c)
6. Disable all interrupts in GPIO interrupt handler (hdl_interrupt.c)
7. Add two Ethernet utility functions (drv_ethernet.c)
8. Add accelerometer driver (analog output)
9. Add accelerometer demo (draft, application.c)

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1654 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
onelife.real
2011-07-29 02:47:37 +00:00
parent 36c6d994c7
commit 19e3ce5ee3
20 changed files with 2076 additions and 783 deletions
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libcpu/arm/cortex-m3/context_gcc.S
+31 -19
View File
@@ -1,25 +1,27 @@
/******************************************************************//**
* @file context_gcc.S
/***************************************************************************//**
* @file context_gcc.S
* @brief Context switch functions
* COPYRIGHT (C) 2011, RT-Thread Development Team
* @author Bernard, onelife
* @version 0.4 beta
**********************************************************************
* @version 0.4 beta
*******************************************************************************
* @section License
* 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
**********************************************************************
* 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
*******************************************************************************
* @section Change Logs
* Date Author Notes
* 2009-10-11 Bernard first version
* 2009-10-11 Bernard first version
* 2010-12-29 onelife Modify for EFM32
* 2011-06-17 onelife Merge all of the assembly source code into context_gcc.S
*********************************************************************/
* 2011-06-17 onelife Merge all of the assembly source code into
* context_gcc.S
* 2011-07-12 onelife Add interrupt context check function
******************************************************************************/
/******************************************************************//**
/***************************************************************************//**
* @addtogroup cortex-m3
* @{
*********************************************************************/
******************************************************************************/
.cpu cortex-m3
.fpu softvfp
@@ -174,14 +176,24 @@ rt_hw_interrupt_thread_switch:
.type HardFault_Handler, %function
HardFault_Handler:
/* get current context */
MRS r0, psp /* get fault thread stack pointer */
PUSH {lr}
MRS R0, PSP /* get fault thread stack pointer */
PUSH {LR}
BL rt_hw_hard_fault_exception
POP {lr}
POP {LR}
ORR lr, lr, #0x04
BX lr
ORR LR, LR, #0x04
BX LR
/******************************************************************//**
/*
* rt_uint32_t rt_hw_interrupt_check(void);
* R0 --> state
*/
.global rt_hw_interrupt_check
.type rt_hw_interrupt_check, %function
rt_hw_interrupt_check:
MRS R0, IPSR
BX LR
/***************************************************************************//**
* @}
*********************************************************************/
******************************************************************************/