85 lines
4.4 KiB
C
85 lines
4.4 KiB
C
/*******************************************************************************
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* @file E34.c
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* @Author: MQjehovah mail:MQjehovah@hotmail.com
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* @version 1.0.0
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* @date 2017-12-22 10:18:04
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* @brief
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******************************************************************************
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* @attention
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*******************************************************************************/
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/* Includes ------------------------------------------------------------------*/
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#include "e34.h"
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/* Definition ----------------------------------------------------------------*/
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ring_buffer E34_RX_BUF;
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ring_buffer *pE34_RX_BUF = &E34_RX_BUF;
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/* Functions -----------------------------------------------------------------*/
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/*******************************************************************************
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* @brief E34模块初始化
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* @param None
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* @retval None
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* @Note None
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*******************************************************************************/
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void E34_Init(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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USART_InitTypeDef USART_InitStructure;
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NVIC_InitTypeDef NVIC_InitStructure;
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE); //使能GPIO时钟
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE); //使能USART3时钟
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12 | GPIO_Pin_13; //GPIOB11与GPIOB10
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; //普通输出模式
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; //100MHz
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽输出
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //上拉
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GPIO_Init(GPIOB, &GPIO_InitStructure); //初始化PA9，PA10
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GPIO_ResetBits(GPIOB, GPIO_Pin_12 | GPIO_Pin_13);
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GPIO_PinAFConfig(GPIOB, GPIO_PinSource10, GPIO_AF_USART3); //GPIOB10复用为USART3
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GPIO_PinAFConfig(GPIOB, GPIO_PinSource11, GPIO_AF_USART3); //GPIOB11复用为USART3
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//USART3
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 | GPIO_Pin_10; //GPIOB11与GPIOB10
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; //复用功能
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //速度50MHz
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽复用输出
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //上拉
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GPIO_Init(GPIOB, &GPIO_InitStructure); //初始化PB10，PB11
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USART_InitStructure.USART_BaudRate = 115200; //一般设置为 9600;
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USART_InitStructure.USART_WordLength = USART_WordLength_8b; //字长为 8 位数据格式
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USART_InitStructure.USART_StopBits = USART_StopBits_1; //一个停止位
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USART_InitStructure.USART_Parity = USART_Parity_No; //无奇偶校验位
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USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
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USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //收发模式
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USART_Init(USART_E34, &USART_InitStructure); //初始化串口
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USART_ClearFlag(USART_E34, USART_FLAG_TC | USART_FLAG_RXNE | USART_FLAG_IDLE);
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USART_ITConfig(USART_E34, USART_IT_RXNE, ENABLE);
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NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn; //串口1中断通道
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; //抢占优先级3
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2; //子优先级3
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道使能 aPcCmuTxBuf_1
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NVIC_Init(&NVIC_InitStructure);
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USART_Cmd(USART_E34, ENABLE); //使能串口
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}
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/*******************************************************************************
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* @brief 串口3中断接收
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* @param None
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* @retval None
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* @Note None
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*******************************************************************************/
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void USART3_IRQHandler(void) //串口1中断服务程序
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{
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if ((USART_GetITStatus(USART3, USART_IT_RXNE) != RESET))
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{
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u8 data = USART_ReceiveData(USART3);
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if (ring_buffer_write(pE34_RX_BUF, data))
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led_set_value(0, 1);
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}
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// USART_ClearITPendingBit(USART3, USART_IT_RXNE);
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}
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/*********************************END OF FILE**********************************/
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