nes-proj/cpu/stm32w108/dev/uart1-putchar.c

107 lines
3.1 KiB
C
Raw Normal View History

/**
* \addtogroup stm32w-cpu
*
* @{
*/
/*
* Copyright (c) 2010, STMicroelectronics.
* 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. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE OR CONTRIBUTORS 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.
*
*/
2010-10-25 09:03:38 +00:00
#include <stdio.h>
#include "dev/uart1.h"
#include PLATFORM_HEADER
#include "hal/micro/micro-common.h"
#include "hal/micro/cortexm3/micro-common.h"
/* #include "uart.h" */
2010-10-25 09:03:38 +00:00
#ifdef __GNUC__
# define _LLIO_STDIN ((int) stdin)
# define _LLIO_STDOUT ((int) stdout)
# define _LLIO_STDERR ((int) stderr)
# define _LLIO_ERROR (-1)
#else
# ifdef __ICCARM__
# include <yfuns.h>
# endif
#endif
#undef putchar
/*--------------------------------------------------------------------------*/
int
__attribute__ ((weak)) putchar(int c)
2010-10-25 09:03:38 +00:00
{
uart1_writeb(c);
return c;
2010-10-25 09:03:38 +00:00
}
/*--------------------------------------------------------------------------*/
void
__io_putchar(char c)
2010-10-25 09:03:38 +00:00
{
putchar(c);
2010-10-25 09:03:38 +00:00
}
/*--------------------------------------------------------------------------*/
size_t
_write(int handle, const unsigned char *buffer, size_t size)
2010-10-25 09:03:38 +00:00
{
size_t nChars = 0;
if(handle != _LLIO_STDOUT && handle != _LLIO_STDERR) {
2010-10-25 09:03:38 +00:00
return _LLIO_ERROR;
}
if(buffer == 0) {
/* This means that we should flush internal buffers. */
/* spin until TX complete (TX is idle) */
while((SC1_UARTSTAT & SC_UARTTXIDLE) != SC_UARTTXIDLE) {
}
2010-10-25 09:03:38 +00:00
return 0;
}
/* ensure port is configured for UART */
2010-10-25 09:03:38 +00:00
if(SC1_MODE != SC1_MODE_UART) {
return _LLIO_ERROR;
}
while(size--) {
__io_putchar(*buffer++);
++nChars;
}
return nChars;
}
/*--------------------------------------------------------------------------*/
size_t
_read(int handle, unsigned char *buffer, size_t size)
2010-10-25 09:03:38 +00:00
{
return 0;
2010-10-25 09:03:38 +00:00
}
/** @} */