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108 lines
3.0 KiB
C
108 lines
3.0 KiB
C
#include "bsp_uart1.h"
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void BSP_UART1SendStr(char *ch){
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uint16_t i = 0,j = 0;
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j = strlen(ch);
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for(i = 0;i < j;i++)
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{
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while(USART_GetFlagStatus(USART1,USART_FLAG_TC)==RESET){};
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USART_SendData(USART1,ch[i]);
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}
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while(USART_GetFlagStatus(USART1,USART_FLAG_TC)==RESET);
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}
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// 发送数据
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void BSP_UART1SendData(uint8_t *ch,uint16_t len){
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uint16_t i;
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for(i = 0;i < len;i++)
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{
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while(USART_GetFlagStatus(USART1,USART_FLAG_TC)==RESET){};
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USART_SendData(USART1,ch[i]);
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}
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while(USART_GetFlagStatus(USART1,USART_FLAG_TC)==RESET);
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}
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void BSP_UART1Init(uint32_t bound){
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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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//使能USART1,GPIOA
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1|RCC_APB2Periph_GPIOA,ENABLE);
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//USART1_TX GPIOA.9
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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//USART1_RX GPIOA.10初始化
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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//Usart1 NVIC 配置
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NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
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NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority= 3;
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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//USART 初始化设置
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USART_InitStructure.USART_BaudRate = bound;
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USART_InitStructure.USART_WordLength = USART_WordLength_8b;
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USART_InitStructure.USART_StopBits = USART_StopBits_1;
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USART_InitStructure.USART_Parity = USART_Parity_No;
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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;
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USART_Init(USART1,&USART_InitStructure);
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USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);
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USART_Cmd(USART1, ENABLE);
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}
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// 读取USARTx->SR能避免莫名其妙的错误
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uint8_t Usart1ReadBuf[100] = {0};
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uint16_t Usart1ReadFlag = 0;
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void USART1_IRQHandler(void){
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uint8_t res = 0;
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if(USART_GetITStatus(USART1,USART_IT_RXNE) != RESET)
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{
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res =USART_ReceiveData(USART1);
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// 是否存在数据没有处理
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if( (Usart1ReadFlag&0x8000)==0 )
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{
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Usart1ReadBuf[Usart1ReadFlag] = res;
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Usart1ReadFlag++;
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// 判断是否接收结束
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if(Usart1ReadFlag>=90)
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{
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Usart1ReadFlag |= (1 << 15);
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}
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}
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}
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//溢出-如果发生溢出需要先读SR,再读DR,则可清除不断入中断的问题
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if( USART_GetFlagStatus(USART1,USART_FLAG_ORE)==SET )
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{
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USART_ReceiveData(USART1);
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USART_ClearFlag(USART1,USART_FLAG_ORE);
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}
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USART_ClearFlag(USART1,USART_IT_RXNE);
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}
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