135 lines
4.3 KiB
C
135 lines
4.3 KiB
C
#include "usart.h"
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#include "pbdata.h"
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char USART1_TX_BUF[USART1_MAX_SEND_LEN]; //发送缓冲,最大USART2_MAX_SEND_LEN字节
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void UART_PutChar(USART_TypeDef* USARTx, uint8_t Data)
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{
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USART_SendData(USARTx, Data);
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while(USART_GetFlagStatus(USARTx, USART_FLAG_TC) == RESET){}
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}
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void UART_PutStr (USART_TypeDef* USARTx, char *str)
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{
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while (0 != *str)
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{
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UART_PutChar(USARTx, *str);
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str++;
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}
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}
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void USART_OUT(USART_TypeDef* USARTx, uint8_t *Data,uint16_t Len)
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{
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uint16_t i;
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for(i=0; i<Len; i++){
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USART_SendData(USARTx, Data[i]);
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while(USART_GetFlagStatus(USARTx, USART_FLAG_TC)==RESET);
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}
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}
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int fputc(int ch,FILE *f)
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{
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USART_ClearFlag(USART1,USART_FLAG_TC);
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USART_SendData(USART1,(u8)ch);
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while(USART_GetFlagStatus(USART1,USART_FLAG_TXE)==RESET);//等待发送数据完毕);
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return ch;
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}
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void USART1_Configuration(u32 baund)
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{
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USART_InitTypeDef USART_InitStructure;
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GPIO_InitTypeDef GPIO_InitStructure;
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NVIC_InitTypeDef NVIC_InitStructure;
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE); //使能USART1
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE); //GPIOA时钟
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USART_DeInit(USART1); //复位串口1
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//USART1_TX PA.9
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9 | GPIO_Pin_10;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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//USART1_RX PA.10
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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GPIO_PinAFConfig(GPIOA, GPIO_PinSource9, GPIO_AF_USART1);
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GPIO_PinAFConfig(GPIOA, GPIO_PinSource10, GPIO_AF_USART1);
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USART_InitStructure.USART_BaudRate = baund;
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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);//开启USART1的接收中断
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//Usart1 NVIC 配置
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NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;//串口1中断通道
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3;//抢占优先级3
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NVIC_InitStructure.NVIC_IRQChannelSubPriority =0; //子优先级3
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道使能
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NVIC_Init(&NVIC_InitStructure); //根据指定的参数初始化VIC寄存器、
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USART_Cmd(USART1,ENABLE);
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USART_ClearFlag(USART1,USART_FLAG_TC); //清除发送完成标志位
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}
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//使用串口读取SDI先复位串口，并且重新配置一下IO
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void USART_RS232_DEinit(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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USART_Cmd(USART1,DISABLE);
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USART_DeInit(USART1);
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE); //使能PB端口时钟
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9|GPIO_Pin_10;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; //推挽输出
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推免
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //上拉
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_400KHz; //IO口速度为400KHz
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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GPIO_SetBits(GPIOA,GPIO_Pin_9);
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GPIO_SetBits(GPIOA,GPIO_Pin_10);
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}
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//使用串口读取SDI先复位串口，并且重新配置一下IO
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void USART_SDI_DEinit(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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USART_Cmd(USART1,DISABLE);
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USART_DeInit(USART1);
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE); //使能PB端口时钟
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6|GPIO_Pin_7;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; //推挽输出
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推免
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //上拉
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_400KHz; //IO口速度为400KHz
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GPIO_Init(GPIOB, &GPIO_InitStructure);
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GPIO_SetBits(GPIOB,GPIO_Pin_6);
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GPIO_SetBits(GPIOB,GPIO_Pin_7);
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}
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void USART1_IRQHandler(void)
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{
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u8 ucCh;
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if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)//接收到数据
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{
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ucCh =USART_ReceiveData(USART1);
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USART_SendData(USART1, ucCh);
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while(USART_GetFlagStatus(USART1, USART_FLAG_TC)==RESET);
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}
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}
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