87 lines
3.1 KiB
C
87 lines
3.1 KiB
C
/*
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* printf_retarget.c
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*
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* Created on: Jan 11, 2013
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* Author: hathach
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*/
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/*
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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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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the tiny usb stack.
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*/
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#include "board.h"
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//-------------------------------------------------------------------- +
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// LPCXpresso printf redirection +
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//-------------------------------------------------------------------- +
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#if (defined __CODE_RED) && (CFG_PRINTF_TARGET != PRINTF_TARGET_DEBUG_CONSOLE)
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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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return board_uart_send((uint8_t*)pcBuffer, iLength);
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#elif CFG_PRINTF_TARGET == PRINTF_TARGET_SWO
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uint32_t i;
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for (i = 0; i<iLength; i++)
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{
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ITM_SendChar(pcBuffer[i]); // print each character
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}
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return iLength;
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#else
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#error Thach, did you forget something
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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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uint8_t c;
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#if CFG_PRINTF_TARGET == PRINTF_TARGET_UART
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board_uart_recv(&c, 1);
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#elif CFG_PRINTF_TARGET == PRINTF_TARGET_SWO
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c = ITM_ReceiveChar();
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#else
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#error Thach, did you forget something
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#endif
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return (int)c;
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}
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#endif
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