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Code Issues Releases Activity

re-target printf to uart successful on LPCXpresso1347

This commit is contained in:
hathach 2013-01-11 22:43:54 +07:00
parent e935f29541
commit 6e0818c901
3 changed files with 67 additions and 28 deletions
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26
demos/bsp/boards/board.c
View File

@ -44,32 +44,6 @@ void SysTick_Handler (void)
system_ticks++;
}
//-------------------------------------------------------------------- +
// LPCXpresso printf redirection +
//-------------------------------------------------------------------- +
#if (defined BSP_UART_ENABLE) && (__REDLIB_INTERFACE_VERSION__ >= __REDLIB_INTERFACE_VERSION__)
// Called by bottom level of printf routine within RedLib C library to write
// a character. With the default semihosting stub, this would write the character
// to the debugger console window . But this version writes
// the character to the LPC1768/RDB1768 UART.
int __sys_write (int iFileHandle, char *pcBuffer, int iLength)
{
return board_uart_send(pcBuffer, iLength);
}
// Called by bottom level of scanf routine within RedLib C library to read
// a character. With the default semihosting stub, this would read the character
// from the debugger console window (which acts as stdin). But this version reads
// the character from the LPC1768/RDB1768 UART.
int __sys_readc (void)
{
uint8_t c;
board_uart_recv(&c, 1);
return (int)c;
}
#endif
void check_failed(uint8_t *file, uint32_t line)
{

4
demos/bsp/boards/board.h
View File

@ -59,8 +59,8 @@
#define BSP_TICKS_PER_SECOND 1000
//#define BSP_UART_ENABLE
#define BSP_UART_BAUDRATE 115200
#define BSP_UART_ENABLE 1
#define BSP_UART_BAUDRATE 115200
/// n-th Bit

65
demos/bsp/boards/printf_retarget.c Normal file
View File

@ -0,0 +1,65 @@
/*
* printf_retarget.c
*
* Created on: Jan 11, 2013
* Author: hathach
*/
/*
* Software License Agreement (BSD License)
* Copyright (c) 2012, hathach (tinyusb.net)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the tiny usb stack.
*/
#include "board.h"
//-------------------------------------------------------------------- +
// LPCXpresso printf redirection +
//-------------------------------------------------------------------- +
#if BSP_UART_ENABLE
// Called by bottom level of printf routine within RedLib C library to write
// a character. With the default semihosting stub, this would write the character
// to the debugger console window . But this version writes
// the character to the UART.
int __sys_write (int iFileHandle, char *pcBuffer, int iLength)
{
(void) iFileHandle;
return board_uart_send(pcBuffer, iLength);
}
// Called by bottom level of scanf routine within RedLib C library to read
// a character. With the default semihosting stub, this would read the character
// from the debugger console window (which acts as stdin). But this version reads
// the character from the UART.
int __sys_readc (void)
{
uint8_t c;
board_uart_recv(&c, 1);
return (int)c;
}
#endif