190 lines
6.3 KiB
C
190 lines
6.3 KiB
C
/**
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******************************************************************************
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* @file console.c
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* @author AST
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* @version V1.0.0
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* @date 26-Aug-2014
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* @brief This file provides implementation of standard input/output
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
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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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* 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. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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/*---------------------------------------------------------------------------*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "console.h"
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#include "stm32l1xx.h"
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#include "stm32l1xx_hal_dma.h"
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#include "stm32l1xx_hal_uart.h"
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#include "st-lib.h"
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/*---------------------------------------------------------------------------*/
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extern st_lib_uart_handle_typedef st_lib_uart_handle;
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/*---------------------------------------------------------------------------*/
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/**
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* @brief Initialises Nucleo UART port for user IO
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* @retval 0
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*/
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int console_init(void)
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{
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st_lib_uart_handle.Instance = USART2;
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st_lib_uart_handle.Init.BaudRate = 115200;
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st_lib_uart_handle.Init.WordLength = UART_WORDLENGTH_8B;
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st_lib_uart_handle.Init.StopBits = UART_STOPBITS_1;
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st_lib_uart_handle.Init.Parity = UART_PARITY_NONE;
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st_lib_uart_handle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
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st_lib_uart_handle.Init.Mode = UART_MODE_TX_RX;
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st_lib_hal_uart_init(&st_lib_uart_handle);
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return 0;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Sends a character to serial port
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* @param ch Character to send
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* @retval Character sent
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*/
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int uart_send_char(int ch)
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{
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st_lib_hal_uart_transmit(&st_lib_uart_handle, (uint8_t *)&ch, 1, HAL_MAX_DELAY);
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return ch;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Receives a character from serial port
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* @retval Character received
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*/
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int uart_receive_char(void)
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{
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uint8_t ch;
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st_lib_hal_uart_receive(&st_lib_uart_handle, &ch, 1, HAL_MAX_DELAY);
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/* Echo character back to console */
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st_lib_hal_uart_transmit(&st_lib_uart_handle, &ch, 1, HAL_MAX_DELAY);
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/* And cope with Windows */
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if(ch == '\r'){
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uint8_t ret = '\n';
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st_lib_hal_uart_transmit(&st_lib_uart_handle, &ret, 1, HAL_MAX_DELAY);
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}
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return ch;
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}
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/*---------------------------------------------------------------------------*/
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#if defined (__IAR_SYSTEMS_ICC__)
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size_t __write(int Handle, const unsigned char * Buf, size_t Bufsize);
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size_t __read(int Handle, unsigned char *Buf, size_t Bufsize);
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/** @brief IAR specific low level standard input
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* @param handle IAR internal handle
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* @param buf Buffer where to store characters read from stdin
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* @param bufsize Number of characters to read
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* @retval Number of characters read
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*/
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size_t __read(int handle, unsigned char *buf, size_t bufsize)
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{
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int i;
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if (handle != 0){
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return -1;
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}
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for(i=0; i<bufsize; i++) {
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buf[i] = uart_receive_char();
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}
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return bufsize;
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}
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/** @brief IAR specific low level standard output
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* @param handle IAR internal handle
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* @param buf Buffer containing characters to be written to stdout
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* @param bufsize Number of characters to write
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* @retval Number of characters read
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*/
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size_t __write(int handle, const unsigned char * buf, size_t bufsize)
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{
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int i;
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if (handle != 1 && handle != 2) {
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return -1;
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}
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for(i=0; i< bufsize; i++) {
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uart_send_char(buf[i]);
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}
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return bufsize;
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}
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/*---------------------------------------------------------------------------*/
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#elif defined (__CC_ARM)
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/**
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* @brief fputc call for standard output implementation
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* @param ch Character to print
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* @param f File pointer
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* @retval Character printed
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*/
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int fputc(int ch, FILE *f)
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{
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return uart_send_char(ch);
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}
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/** @brief fgetc call for standard input implementation
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* @param f File pointer
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* @retval Character acquired from standard input
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*/
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int fgetc(FILE *f)
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{
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return uart_receive_char();
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}
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/*---------------------------------------------------------------------------*/
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#elif defined (__GNUC__)
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/** @brief putchar call for standard output implementation
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* @param ch Character to print
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* @retval Character printed
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*/
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int __io_putchar(int ch)
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{
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return uart_send_char(ch);
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}
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/** @brief getchar call for standard input implementation
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* @param None
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* @retval Character acquired from standard input
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*/
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int __io_getchar(void)
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{
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return uart_receive_char();
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}
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/*---------------------------------------------------------------------------*/
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#else
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#error "Toolchain not supported"
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#endif
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/*---------------------------------------------------------------------------*/
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