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usart.c
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usart.c
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/***************************************************************************************************
* OrangeBoot *
* Copyright (c) 2018 YiQiChuang(ShanXi) Electronic Technology CO,LTD. *
* Copyright (c) 2012-2014 PX4 Development Team. *
* Copyright (c) 2010 libopencm3 project (Gareth McMullin) *
* *
* This file is part of OrangeBoot project. *
* *
* @file usart.c *
* @brief 程序串口驱动 *
* @author Arthur Zheng *
* @email 15034186698@163.com *
* @version 1.1.0.0 *
* @date 2018/07/15 *
* *
*--------------------------------------------------------------------------------------------------*
* Remark : *
*--------------------------------------------------------------------------------------------------*
* Change History : *
* <Date> | <Version> | <Author> | <Description> *
*--------------------------------------------------------------------------------------------------*
* 2018/01/31 | 1.0.0.0 | Arthur Zheng | Create file *
* 2018/04/19 | 1.1.0.0 | Arthur Zheng | Restyle the structure of project *
*--------------------------------------------------------------------------------------------------*
* Lisense : GPLv3 *
* *
* This program is free software: you can redistribute it and/or modify it under the terms of the *
* GNU General Public License aspublished by the Free Software Foundation, either version 3 of the *
* License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY; without *
* even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License along with this program. *
* If not, see <http://www.gnu.org/licenses/>. *
*--------------------------------------------------------------------------------------------------*
* *
***************************************************************************************************/
/* Includes --------------------------------------------------------------------------------------*/
#include "hw_config.h"
# include <libopencm3/stm32/rcc.h>
# include <libopencm3/stm32/gpio.h>
#include <libopencm3/stm32/usart.h>
#include "bl.h"
#include "usart.h"
/* Private variable -----------------------------------------------------------------------------*/
uint32_t usart;
/**
* @brief 初始化串口接口
* @param none
* @return none
*/
void uart_cinit(void *config)
{
usart = (uint32_t)config;
/* 设置串口 */
usart_set_baudrate(usart, 115200);
usart_set_databits(usart, 8);
usart_set_stopbits(usart, USART_STOPBITS_1);
usart_set_mode(usart, USART_MODE_TX_RX);
usart_set_parity(usart, USART_PARITY_NONE);
usart_set_flow_control(usart, USART_FLOWCONTROL_NONE);
/* 使能串口 */
usart_enable(usart);
}
/**
* @brief 反初始化串口接口
* @param none
* @return none
*/
void uart_cfini(void)
{
usart_disable(usart);
}
/**
* @brief 读取串口接收寄存器
* @param none
* @return c -1,未收到数据;>=0接收到的数据
*/
int uart_cin(void)
{
int c = -1;
if (usart_get_flag(usart, USART_FLAG_RXNE)) /* 接受标志位置位 */
{
c = usart_recv(usart); /* 读取数据 */
}
return c;
}
/**
* @brief 串口输出
* @param *buf 输出数据指针
* @param len 数据长度
* @return none
*/
void uart_cout(uint8_t *buf, unsigned len)
{
while (len--)
{
usart_send_blocking(usart, *buf++);
}
}
/********* Copyright (c) 2018 YiQiChuang(ShanXi) Electronic Technology CO,LTD *****END OF FILE****/