149 lines
4.5 KiB
C
149 lines
4.5 KiB
C
/**************************************************************************/
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/*!
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@file printf_retarget.c
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@author hathach (tinyusb.org)
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@section LICENSE
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Software License Agreement (BSD License)
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Copyright (c) 2013, hathach (tinyusb.org)
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All rights reserved.
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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 are met:
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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 the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the copyright holders nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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INCLUDING NEGLIGENCE OR OTHERWISE ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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This file is part of the tinyusb stack.
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*/
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/**************************************************************************/
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#include "board.h"
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#if CFG_PRINTF_TARGET != PRINTF_TARGET_SEMIHOST
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#if CFG_PRINTF_TARGET == PRINTF_TARGET_UART
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#define retarget_getchar() board_uart_getchar()
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#elif CFG_PRINTF_TARGET == PRINTF_TARGET_SWO
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#define retarget_getchar() ITM_ReceiveChar()
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#else
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#error Target is not implemented yet
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#endif
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//--------------------------------------------------------------------+
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// LPCXPRESSO / RED SUITE
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//--------------------------------------------------------------------+
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#if defined __CODE_RED
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// Called by bottom level of printf routine within RedLib C library to write
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// a character. With the default semihosting stub, this would write the character
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// to the debugger console window . But this version writes
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// the character to the UART.
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int __sys_write (int iFileHandle, char *pcBuffer, int iLength)
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{
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(void) iFileHandle;
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#if CFG_PRINTF_TARGET == PRINTF_TARGET_UART
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// following code to make \n --> \r\n
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int length = iLength;
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char* p_newline_pos = memchr(pcBuffer, '\n', length);
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while(p_newline_pos != NULL)
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{
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uint32_t chunk_len = p_newline_pos - pcBuffer;
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board_uart_send((uint8_t*)pcBuffer, chunk_len);
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board_uart_send(&"\r\n", 2);
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pcBuffer += (chunk_len + 1);
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length -= (chunk_len + 1);
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p_newline_pos = memchr(pcBuffer, '\n', length);
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}
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board_uart_send((uint8_t*)pcBuffer, length);
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return iLength;
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#elif CFG_PRINTF_TARGET == PRINTF_TARGET_SWO
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#error author does not know how to retarget SWO with lpcxpresso/red-suite
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#endif
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}
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// Called by bottom level of scanf routine within RedLib C library to read
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// a character. With the default semihosting stub, this would read the character
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// from the debugger console window (which acts as stdin). But this version reads
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// the character from the UART.
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int __sys_readc (void)
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{
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return (int) retarget_getchar();
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}
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//--------------------------------------------------------------------+
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// KEIL
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//--------------------------------------------------------------------+
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#elif defined __CC_ARM // keil
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#if CFG_PRINTF_TARGET == PRINTF_TARGET_UART
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#define retarget_putc(c) board_uart_send( (uint8_t*) &c, 1);
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#elif CFG_PRINTF_TARGET == PRINTF_TARGET_SWO
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volatile int32_t ITM_RxBuffer;
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#define retarget_putc(c) ITM_SendChar(c)
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#endif
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struct __FILE {
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uint32_t handle;
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};
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int fgetc(FILE *f)
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{
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return retarget_getchar();
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}
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int fputc(int ch, FILE *f)
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{
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if (//CFG_PRINTF_NEWLINE[0] == '\r' &&
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ch == '\n')
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{
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uint8_t carry = '\r';
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retarget_putc(carry);
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}
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retarget_putc(ch);
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return ch;
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}
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void _ttywrch(int ch)
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{
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if (//CFG_PRINTF_NEWLINE[0] == '\r' &&
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ch == '\n')
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{
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uint8_t carry = '\r';
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retarget_putc(carry);
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}
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retarget_putc(ch);
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}
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#endif
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#endif // CFG_PRINTF_TARGET != PRINTF_TARGET_SEMIHOST
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