108 lines
3.5 KiB
C
108 lines
3.5 KiB
C
#include "bsp.h"
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//串口接收缓存区
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Usart5_Fram_Record_Struct Usart5_Fram_Record_Structs;
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u8 Usart5_TX_BUF[520]; //发送缓冲
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void Usart5_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_APB1PeriphClockCmd(RCC_APB1Periph_UART5, ENABLE); //使能Usart5
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC|RCC_AHBPeriph_GPIOD, ENABLE); //GPIOc时钟
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//NVIC_Configuration();
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USART_DeInit(UART5); //复位串口1
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//USART1_TX PC12
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12 ;
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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(GPIOC, &GPIO_InitStructure);
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//USART1_RX PD2
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 ;
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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(GPIOD, &GPIO_InitStructure);
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GPIO_PinAFConfig(GPIOC, GPIO_PinSource12, GPIO_AF_UART5);
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GPIO_PinAFConfig(GPIOD, GPIO_PinSource2, GPIO_AF_UART5);
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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(UART5,&USART_InitStructure);
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USART_Cmd(UART5,ENABLE);
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USART_ITConfig(UART5,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 = UART5_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_ClearFlag(UART5,USART_FLAG_TC); //清除发送完成标志位
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}
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void Usart5_ReceiveBuff_Clear(void)
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{
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Usart5_Fram_Record_Structs.InfBit.FramLength=0;
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Usart5_Fram_Record_Structs.InfBit.FramFinishFlag=0;
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memset(Usart5_Fram_Record_Structs.Usart5_RX_BUF,0,Usart5_MAX_RECV_LEN);
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memset(Usart5_TX_BUF,0,200);
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}
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void UART5_IRQHandler(void)
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{
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u8 ucCh;
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if(USART_GetITStatus( UART5, USART_IT_RXNE ) != RESET )
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{
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ucCh = USART_ReceiveData( UART5 );
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if(Usart5_Fram_Record_Structs .InfBit .FramLength < ( Usart5_MAX_RECV_LEN - 1 ) )
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{
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//留最后一位做结束位
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Usart5_Fram_Record_Structs .Usart5_RX_BUF[ Usart5_Fram_Record_Structs .InfBit .FramLength ++ ] = ucCh;
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}
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}
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if( USART_GetITStatus( UART5, USART_IT_IDLE ) == SET ) //如果总线空闲
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{
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Usart5_Fram_Record_Structs .InfBit .FramFinishFlag = 1;
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ucCh = USART_ReceiveData( UART5 ); //由软件序列清除中断标志位（先读USART_SR,然后读USART_DR）
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}
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}
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//串口5,printf 函数
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//确保一次发送数据不超过Usart5_MAX_SEND_LEN字节
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void u5_printf(char* fmt,...)
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{
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u16 i,j;
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va_list ap;
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va_start(ap,fmt);
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vsprintf((char*)Usart5_TX_BUF,fmt,ap);
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va_end(ap);
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i=strlen((const char*)Usart5_TX_BUF); //此次发送数据的长度
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for(j=0;j<i;j++) //循环发送数据
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{
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while(USART_GetFlagStatus(UART5,USART_FLAG_TC)==RESET); //循环发送,直到发送完毕
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USART_SendData(UART5,Usart5_TX_BUF[j]);
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}
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}
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