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https://github.com/apache/nuttx.git
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Add framework for UART support
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@704 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
@@ -154,7 +154,13 @@ void up_initialize(void)
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/* Initialize the serial device driver */
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#ifdef CONFIG_USE_SERIALDRIVER
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up_serialinit();
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#endif
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#ifdef CONFIG_USE_LOWCONSOLE
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lowconsole_init();
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#endif
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/* Initialize the netwok */
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@@ -50,6 +50,8 @@
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#undef CONFIG_SUPPRESS_SERIAL_INTS /* Console will poll */
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#undef CONFIG_SUPPRESS_UART_CONFIG /* Do not reconfig UART */
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#undef CONFIG_DUMP_ON_EXIT /* Dump task state on exit */
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#undef CONFIG_Z80_LOWPUTC /* Support up_lowputc for debug */
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#undef CONFIG_Z80_LOWGETC /* support up_lowgetc for debug */
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/****************************************************************************
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* Included Files
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@@ -63,6 +65,17 @@
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* Definitions
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****************************************************************************/
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/* Determine which (if any) console driver to use */
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#if defined(CONFIG_Z80_LOWPUTC) || defined(CONFIG_Z80_LOWGETC) || \
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CONFIG_NFILE_DESCRIPTORS == 0 || defined(CONFIG_DEV_LOWCONSOLE)
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# define CONFIG_USE_LOWCONSOLE 1
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# define CONFIG_USE_LOWUARTINIT 1
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#elif defined(CONFIG_DEV_CONSOLE) && CONFIG_NFILE_DESCRIPTORS > 0
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# define CONFIG_USE_SERIALDRIVER 1
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# define CONFIG_USE_EARLYSERIALINIT 1
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#endif
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/****************************************************************************
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* Public Types
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****************************************************************************/
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@@ -106,7 +119,7 @@ void up_addregion(void);
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/* Defined in up_serial.c */
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#if CONFIG_NFILE_DESCRIPTORS > 0
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#ifdef CONFIG_USE_SERIALDRIVER
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EXTERN void up_earlyserialinit(void);
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EXTERN void up_serialinit(void);
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#else
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@@ -114,6 +127,12 @@ EXTERN void up_serialinit(void);
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# define up_serialinit()
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#endif
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#ifdef CONFIG_USE_LOWCONSOLE
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EXTERN void lowconsole_init(void);
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#else
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# define lowconsole_init()
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#endif
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/* Defined in up_timerisr.c */
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EXTERN void up_timerinit(void);
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@@ -42,8 +42,8 @@ CMN_CSRCS = up_initialize.c up_allocateheap.c up_createstack.c \
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up_reprioritizertr.c up_idle.c up_assert.c up_doirq.c \
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up_mdelay.c up_udelay.c up_usestack.c
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CHIP_SSRCS = z8_vector.S z8_saveusercontext.S z8_restorecontext.S
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CHIP_SSRCS = z8_lowuart.S z8_vector.S z8_saveusercontext.S z8_restorecontext.S
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CHIP_CSRCS = z8_initialstate.c z8_irq.c z8_saveirqcontext.c \
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z8_schedulesigaction.c z8_sigdeliver.c z8_timerisr.c \
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z8_registerdump.c
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z8_serial.c z8_registerdump.c
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@@ -97,6 +97,73 @@
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#define Z8_TIMERCTL_GATED _HX(06)
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#define Z8_TIMERCTL_CAPCMP _HX(07)
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/* UART Register Offsets *************************************************************/
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#define Z8_UART_TXD _HX(00) /* 8-bits: UART Transmit Data */
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#define Z8_UART_RXD _HX(00) /* 8-bits: UART Receive Data */
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#define Z8_UART_STAT0 _HX(01) /* 8-bits: UART Status 0 */
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#define Z8_UART_CTL _HX(02) /* 16-bits: UART Control */
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#define Z8_UART_CTL0 _HX(02) /* 8-bits: UART Control 0 */
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#define Z8_UART_CTL1 _HX(03) /* 8-bits: UART COntrol 1 */
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#if defined(_Z8FMC16) || defined(_Z8F1680)
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# define Z8_UART_MDSTAT _HX(04) /* 8-bits: UART Mode Select & Status */
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#else
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# define Z8_UART_STAT1 _HX(04) /* 8-bits: UART Status 1 */
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#endif
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#define Z8_UART_ADDR _HX(05) /* 8-bits: UART Address Compare */
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#define Z8_UART_BR _HX(06) /* 16-bits: UART Baud Rate */
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#define Z8_UART_BRH _HX(06) /* 8-bits: UART Baud Rate High Byte */
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#define Z8_UART_BRL _HX(07) /* 8-bits: UART Baud Rate Low Byte */
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/* UART0/1 Base Register Addresses **************************************************/
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#ifdef EZ8_UART0
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# define Z8_UART0_BASE ((ubyte volatile far*)0xf40)
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#endif
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#ifdef EZ8_UART1
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# define Z8_UART1_BASE ((ubyte volatile far*)0xf48)
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#endif
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/* UART0/1 Status 0 Register Bit Definitions ****************************************/
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#define Z8_UARTSTAT0_RDA _HX(80) /* Bit 7: Receive Data Available */
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#define Z8_UARTSTAT0_PE _HX(40) /* Bit 6: Parity Error */
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#define Z8_UARTSTAT0_OE _HX(20) /* Bit 5: Overrun Error */
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#define Z8_UARTSTAT0_FE _HX(10) /* Bit 4: Framing Error */
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#define Z8_UARTSTAT0_BRKD _HX(08) /* Bit 3: Break Detect */
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#define Z8_UARTSTAT0_TDRE _HX(04) /* Bit 2: Transmitter Data Register Empty */
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#define Z8_UARTSTAT0_TXE _HX(02) /* Bit 1: Transmitter Empty */
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#define Z8_UARTSTAT0_CTS _HX(01) /* Bit 0: Clear To Send */
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/* UART0/1 Control 0/1 Register Bit Definitions *************************************/
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#define Z8_UARTCTL0_TEN _HX(80) /* Bit 7: Transmit Enable */
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#define Z8_UARTCTL0_REN _HX(40) /* Bit 6: Receive Enable */
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#define Z8_UARTCTL0_CTSE _HX(20) /* Bit 5: CTS Enable */
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#define Z8_UARTCTL0_PEN _HX(10) /* Bit 4: Parity Enable */
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#define Z8_UARTCTL0_PSEL _HX(08) /* Bit 3: Odd Parity Select */
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#define Z8_UARTCTL0_SBRK _HX(04) /* Bit 2: Send Break */
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#define Z8_UARTCTL0_STOP _HX(02) /* Bit 1: Stop Bit Select */
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#define Z8_UARTCTL0_LBEN _HX(01) /* Bit 0: Loopback Enable */
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#define Z8_UARTCTL1_MPMD1 _HX(80) /* Bit 7: Multiprocessor Mode (bit1) */
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#define Z8_UARTCTL1_MPEN _HX(40) /* Bit 6: Multiprocessor Enable */
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#define Z8_UARTCTL1_MPMD0 _HX(20) /* Bit 5: Multiprocessor Mode (bit0) */
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#define Z8_UARTCTL1_MPBT _HX(10) /* Bit 4: Multiprocessor Bit Transmit */
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#define Z8_UARTCTL1_DEPOL _HX(08) /* Bit 3: Driver Enable Polarity */
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#define Z8_UARTCTL1_BRGCTL _HX(04) /* Bit 2: Baud Rate Generator Control */
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#define Z8_UARTCTL1_RDAIRQ _HX(02) /* Bit 1: Receive Data Interrupt Enable */
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#define Z8_UARTCTL1_IREN _HX(01) /* Bit 0: Infrared Encoder/Decoder Eanble */
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/* UART0/1 Mode Status/Select Register Bit Definitions ******************************/
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#define Z8_UARTMDSEL_NORMAL _HX(00) /* Bits 5-7=0: Multiprocessor and Normal Mode */
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#define Z8_UARTMDSEL_FILTER HX(20) /* Bits 5-7=1: Noise Filter Control/Status */
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#define Z8_UARTMDSEL_LINP HX(40) /* Bits 5-7=2: LIN protocol Contol/Status */
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#define Z8_UARTMDSEL_HWREV HX(e0) /* Bits 5-7=7: LIN-UART Hardware Revision */
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/* Bits 0-4: Mode dependent status */
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/* Register access macros ***********************************************************
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*
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* The register access mechanism provided in ez8.h differs from the useful in other
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@@ -42,9 +42,11 @@
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************************************************************************************/
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#include <sys/types.h>
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#include <nuttx/sched.h>
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#include <nuttx/arch.h>
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#include "up_internal.h"
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#ifndef __ASSEMBLY__
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# include <nuttx/sched.h>
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# include <nuttx/arch.h>
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#endif
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#include "common/up_internal.h"
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/************************************************************************************
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* Definitions
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Executable
+156
@@ -0,0 +1,156 @@
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/*************************************************************************
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* arch/z80/src/z8/z8_lowuart.asm
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* ez8 UART management
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*
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* Copyright (C) 2008 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSeqUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*************************************************************************/
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/*************************************************************************
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* Included Files
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*************************************************************************/
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#include <nuttx/config.h>
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#include "chip/chip.h"
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#include "common/up_internal.h"
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#ifdef CONFIG_USE_LOWUARTINIT
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/*************************************************************************
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* External References / External Definitions
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*************************************************************************/
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xdef _z8_lowuartinit
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#ifdef CONFIG_Z80_LOWPUTC
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xdef _up_lowputc
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#endif
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#ifdef CONFIG_Z80_LOWGETC
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xdef _up_lowgetc
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#endif
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/*************************************************************************
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* Data Allocation
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*************************************************************************/
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define CODESEG, SPACE=ROM
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segment CODESEG
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/*************************************************************************
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* Code
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*************************************************************************/
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/*************************************************************************
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* Name: z8_lowuartinit
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*
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* Description:
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* Initialize UART0 or UART1
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*
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* Parameters:
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* None
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*
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*************************************************************************/
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_z8_lowuartinit:
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#endif /* CONFIG_USE_LOWUARTINIT */
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/*************************************************************************
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* Name: _up_lowputc
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*
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* Description:
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* Send one character to the selected serial console
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*
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* Parmeters:
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* r1 = character
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*
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* Return:
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* None
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*
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* Modifies r0 (and maybe r1)
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*
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*************************************************************************/
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#ifdef CONFIG_Z80_LOWPUTC
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_up_lowputc:
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/* Check if the character to output is a linefeed */
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/* Output a carriage return before the linefeed */
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/*************************************************************************
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* Name: _z8_xmitc
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*
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* Description:
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* Send one character on the selected port (really a part of up_lowputc)
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*
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* Parameters:
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* r1 = character
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*
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* Return:
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* None
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*
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* Modifies r0
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*
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*************************************************************************/
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_z8_xmitc:
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_z8_xmitc1:
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#ifdef CONFIG_UART1_SERIAL_CONSOLE
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#else
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#endif
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ret /* Return */
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#endif /* CONFIG_Z80_LOWPUTC */
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/*************************************************************************
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* Name: _up_lowgetc
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*
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* Description:
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* Get a character from the serial port
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*
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* Parmeters:
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* None
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*
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* Return
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* R0 = Character read
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*
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*************************************************************************/
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#ifdef CONFIG_Z80_LOWGETC
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_up_lowgetc:
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_up_lowgetc1:
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#ifdef CONFIG_UART1_SERIAL_CONSOLE
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#else
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#endif
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#endif
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end
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Executable
+802
File diff suppressed because it is too large
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