199 lines
4.9 KiB
C
199 lines
4.9 KiB
C
/*
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*********************************************************************************************************
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*
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* 模块名称 : 重定向文件
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* 文件名称 : Retarget.c
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* 版 本 : V1.0
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* 说 明 : 此重定向文档，串口和FlashFS都要使用。
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* 1. FlashFS不支持使用MDK中的MicroLib功能，不使用MicroLib的话，默认半主模式是开启的，
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* 因此需要重新做重定向文件，以支持串口打印和FlashFS的使用。
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* 2. 本文件来自KEIL官方，用户只需提供
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* extern int sendchar (int ch);
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* extern int getkey (void);
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* 两个函数即可，这两个函数在bsp_uart_fifo.c文件实现
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*
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* 修改记录 :
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* 版本号 日期 作者 说明
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* V1.0 2015-09-10 Eric2013 首发
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*
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* Copyright (C), 2015-2020, 安富莱电子 www.armfly.com
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*
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*********************************************************************************************************
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*/
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/*----------------------------------------------------------------------------
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* RL-ARM - FlashFS
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*----------------------------------------------------------------------------
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* Name: RETARGET.C
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* Purpose: Retarget low level functions
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* Rev.: V4.20
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*----------------------------------------------------------------------------
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* This code is part of the RealView Run-Time Library.
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* Copyright (c) 2004-2011 KEIL - An ARM Company. All rights reserved.
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*---------------------------------------------------------------------------*/
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#include <stdio.h>
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#include <string.h>
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#include <rt_sys.h>
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#include <File_Config.h>
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#define STDIO
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#pragma import(__use_no_semihosting_swi)
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/* The following macro definitions may be used to translate this file:
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STDIO - use standard Input/Output device
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(default is NOT used)
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*/
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/* Standard IO device handles. */
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#define STDIN 0x8001
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#define STDOUT 0x8002
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#define STDERR 0x8003
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/* Standard IO device name defines. */
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const char __stdin_name[] = "STDIN";
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const char __stdout_name[] = "STDOUT";
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const char __stderr_name[] = "STDERR";
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struct __FILE { int handle; /* Add whatever you need here */ };
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int sendchar(int ch)
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{
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return 0;
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}
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int getkey (void)
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{
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return 0;
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}
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/*--------------------------- _ttywrch --------------------------------------*/
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void _ttywrch (int ch) {
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#ifdef STDIO
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sendchar(ch);
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#endif
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}
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/*--------------------------- _sys_open -------------------------------------*/
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FILEHANDLE _sys_open (const char *name, int openmode) {
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/* Register standard Input Output devices. */
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if (strcmp(name, "STDIN") == 0) {
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return (STDIN);
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}
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if (strcmp(name, "STDOUT") == 0) {
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return (STDOUT);
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}
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if (strcmp(name, "STDERR") == 0) {
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return (STDERR);
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}
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return (__sys_open (name, openmode));
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}
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/*--------------------------- _sys_close ------------------------------------*/
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int _sys_close (FILEHANDLE fh) {
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if (fh > 0x8000) {
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return (0);
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}
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return (__sys_close (fh));
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}
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/*--------------------------- _sys_write ------------------------------------*/
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int _sys_write (FILEHANDLE fh, const U8 *buf, U32 len, int mode) {
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#ifdef STDIO
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if (fh == STDOUT) {
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/* Standard Output device. */
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for ( ; len; len--) {
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sendchar (*buf++);
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}
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return (0);
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}
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#endif
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if (fh > 0x8000) {
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return (-1);
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}
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return (__sys_write (fh, buf, len));
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}
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/*--------------------------- _sys_read -------------------------------------*/
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int _sys_read (FILEHANDLE fh, U8 *buf, U32 len, int mode) {
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#ifdef STDIO
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if (fh == STDIN) {
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/* Standard Input device. */
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for ( ; len; len--) {
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*buf++ = getkey ();
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}
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return (0);
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}
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#endif
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if (fh > 0x8000) {
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return (-1);
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}
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return (__sys_read (fh, buf, len));
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}
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/*--------------------------- _sys_istty ------------------------------------*/
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int _sys_istty (FILEHANDLE fh) {
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if (fh > 0x8000) {
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return (1);
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}
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return (0);
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}
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/*--------------------------- _sys_seek -------------------------------------*/
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int _sys_seek (FILEHANDLE fh, long pos) {
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if (fh > 0x8000) {
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return (-1);
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}
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return (__sys_seek (fh, pos));
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}
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/*--------------------------- _sys_ensure -----------------------------------*/
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int _sys_ensure (FILEHANDLE fh) {
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if (fh > 0x8000) {
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return (-1);
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}
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return (__sys_ensure (fh));
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}
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/*--------------------------- _sys_flen -------------------------------------*/
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long _sys_flen (FILEHANDLE fh) {
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if (fh > 0x8000) {
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return (0);
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}
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return (__sys_flen (fh));
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}
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/*--------------------------- _sys_tmpnam -----------------------------------*/
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int _sys_tmpnam (char *name, int sig, unsigned maxlen) {
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return (1);
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}
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/*--------------------------- _sys_command_string ---------------------------*/
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char *_sys_command_string (char *cmd, int len) {
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return (cmd);
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}
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/*--------------------------- _sys_exit -------------------------------------*/
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void _sys_exit (int return_code) {
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/* Endless loop. */
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while (1);
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}
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/*----------------------------------------------------------------------------
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* end of file
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*---------------------------------------------------------------------------*/
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