STM 32シリアルポート5個初期化、最初の三つのDMA操作、自家製キューキャッシュ機構、テスト安定
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直接コード:
まずヘッダファイルh
次はc
使用するmainファイルをテストします.
最近使用してネットユーザーの言うstm 32カードが死んでシリアルポートの受信が中断することを発見して、カードが死んだ原因はシリアルポートが持っているBUGがUSARTに現れたのですFLAG_OREフラグビットがクリアできない問題.解決方法:https://blog.csdn.net/qq_42074368/article/details/104031133
まずヘッダファイルh
#ifndef _IOT_UART_H_
#define _IOT_UART_H_
#include "stm32f10x.h"
#define buff 5
#define blen 350
typedef struct {
char DMA_Buffer[blen];
char RxBuffer[buff][blen];
char read;
char write;
char cnt;
}uart_stack;
extern uart_stack uart1;
extern uart_stack uart2;
extern uart_stack uart3;
void UART1_init(void);
void UART2_init(void);
void UART3_init(void);
void UART4_init(void);
void UART5_init(void);
//======================================
void PushUartMsg(uart_stack * uart,u32 Uart_Rec_Cnt);
#define PushUartMsg1(n) PushUartMsg(&uart1,n)
#define PushUartMsg2(n) PushUartMsg(&uart2,n)
#define PushUartMsg3(n) PushUartMsg(&uart3,n)
u8 * PopUartMsg(uart_stack * uart);
#define PopUartMsg1() PopUartMsg(&uart1)
#define PopUartMsg2() PopUartMsg(&uart2)
#define PopUartMsg3() PopUartMsg(&uart3)
//======================================
void IOT_UART_Send_Array(USART_TypeDef* USARTx,u8 * send_array,u32 num);
#define Uart1send(tx_buf,buflen) IOT_UART_Send_Array(USART1,(u8 *)tx_buf, buflen)
#define Uart2send(tx_buf,buflen) IOT_UART_Send_Array(USART2,(u8 *)tx_buf, buflen)
#define Uart3send(tx_buf,buflen) IOT_UART_Send_Array(USART3,(u8 *)tx_buf, buflen)
#define Uart4send(tx_buf,buflen) IOT_UART_Send_Array(USART4,(u8 *)tx_buf, buflen)
#define Uart5send(tx_buf,buflen) IOT_UART_Send_Array(USART5,(u8 *)tx_buf, buflen)
#endif
次はc
#include "uart.h"
#include "sys.h"
//-------------------------------------------------------------------------
//-------------------------------------------------------------------------
uart_stack uart1 = {0};
uart_stack uart2 = {0};
uart_stack uart3 = {0};
//======================================================================================================UART1_init(void)
int fputc(int ch, FILE *f)
{
USART_SendData(USART1 , (uint8_t) ch);
while (USART_GetFlagStatus(USART1 , USART_FLAG_TC) == RESET){}
return ch;
}
void UART1_init(void)//
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA |RCC_APB2Periph_USART1, ENABLE);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
USART_DeInit(USART1); // 1
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = 115200;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
/* Enable the USART1 Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn ;//todo
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=2 ;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
USART_Init(USART1 , &USART_InitStructure);
USART_ITConfig(USART1 , USART_IT_IDLE, ENABLE);
USART_DMACmd(USART1,USART_DMAReq_Rx,ENABLE);
USART_Cmd(USART1 , ENABLE);
//DMA
DMA_DeInit(DMA1_Channel5);
DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)&USART1->DR;
DMA_InitStructure.DMA_MemoryBaseAddr = (u32)uart1.DMA_Buffer;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = blen;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_Priority = DMA_Priority_Medium;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel5, &DMA_InitStructure);
DMA_Cmd(DMA1_Channel5, ENABLE);
}
//========================================================================================================UART2_init(void)
void UART2_init(void)//WIFI
{
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
USART_InitTypeDef USART_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
RCC_APB1PeriphClockCmd( RCC_APB1Periph_USART2, ENABLE);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
USART_DeInit(USART2); // 2
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = 115200;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(USART2, &USART_InitStructure);
USART_ITConfig(USART2, USART_IT_IDLE, ENABLE);
USART_DMACmd(USART2,USART_DMAReq_Rx,ENABLE);
USART_Cmd(USART2, ENABLE);
/* Enable the USART2 Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;//todo
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1 ;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
//DMA
DMA_DeInit(DMA1_Channel6);
DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)&USART2->DR;
DMA_InitStructure.DMA_MemoryBaseAddr = (u32)uart2.DMA_Buffer;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = blen;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_Priority = DMA_Priority_Medium;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel6, &DMA_InitStructure);
DMA_Cmd(DMA1_Channel6, ENABLE);
}
//========================================================================================================UART3_init(void)
void UART3_init(void)/* 3MC20 */
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3 , ENABLE);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
USART_DeInit(USART3); // 3
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOB, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = 115200;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(USART3, &USART_InitStructure);
USART_ITConfig(USART3, USART_IT_IDLE, ENABLE);
USART_DMACmd(USART3,USART_DMAReq_Rx,ENABLE);
USART_Cmd(USART3, ENABLE);
/* Enable the USART2 Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn;//todo
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0 ;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
//DMA
DMA_DeInit(DMA1_Channel3);
DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)&USART3->DR;
DMA_InitStructure.DMA_MemoryBaseAddr = (u32)uart3.DMA_Buffer;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = blen;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_Priority = DMA_Priority_Medium;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel3, &DMA_InitStructure);
DMA_Cmd(DMA1_Channel3, ENABLE);
}
//========================================================================================================UART4_init(void)
void UART4_init(void) /* 4LCD *///TX-PC10 RX-PC11
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART4 , ENABLE);
USART_DeInit(UART4); // 3
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOC, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = 115200;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(UART4, &USART_InitStructure);
//USART_ITConfig(UART4,USART_IT_RXNE,ENABLE);
USART_Cmd(UART4, ENABLE);
}
//========================================================================================================UART5_init(void)
void UART5_init(void)/* 5GPS *///TX-PC12 RX-PD2
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOD, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART5 , ENABLE);
USART_DeInit(UART5); // 3
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOD, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = 115200;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(UART5, &USART_InitStructure);
USART_ITConfig(UART5,USART_IT_RXNE,ENABLE);
USART_Cmd(UART5, ENABLE);
/* Enable the UART5 Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = UART5_IRQn;//todo
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3 ;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////
void USART1_IRQHandler(void) // 1 //
{ //
uint8_t Clear = Clear; //
// //
if(USART_GetFlagStatus(USART1,USART_FLAG_ORE) == SET) //
{ //
USART_ReceiveData(USART1); //
} //
if(USART_GetITStatus(USART1, USART_IT_IDLE) != RESET) //
{ //
Clear=USART1->SR; //
Clear=USART1->DR; //
USART_ReceiveData(USART1); //USART2_IRQHandler
int IOT_Uart_Rec_Cnt = blen-DMA_GetCurrDataCounter(DMA1_Channel5); //
DMA_Cmd(DMA1_Channel5, DISABLE );// DMA //
if(IOT_Uart_Rec_Cnt>0) //
{ //
PushUartMsg1(IOT_Uart_Rec_Cnt); //
} //
USART_ClearITPendingBit(USART1,USART_IT_IDLE); //
DMA_SetCurrDataCounter(DMA1_Channel5,blen);// //
DMA_Cmd(DMA1_Channel5, ENABLE); //
} //
} //
///////////////////////////////////////////////////////////////////////////////////////////////////////////
void USART2_IRQHandler(void) //USART2_IRQHandler //
{ //
uint8_t Clear = Clear; //
// //
if(USART_GetFlagStatus(USART2,USART_FLAG_ORE) == SET) //
{ //
USART_ReceiveData(USART2); //
} //
if(USART_GetITStatus(USART2, USART_IT_IDLE) != RESET) //
{ //
Clear=USART2->SR; //
Clear=USART2->DR; //
USART_ReceiveData(USART2); //USART2_IRQHandler
int IOT_Uart_Rec_Cnt = blen-DMA_GetCurrDataCounter(DMA1_Channel6); //
DMA_Cmd(DMA1_Channel6, DISABLE );// DMA //
if(IOT_Uart_Rec_Cnt>0) //
{ //
PushUartMsg2(IOT_Uart_Rec_Cnt); //
} //
USART_ClearITPendingBit(USART2,USART_IT_IDLE); //
DMA_SetCurrDataCounter(DMA1_Channel6,blen);// //
DMA_Cmd(DMA1_Channel6, ENABLE); //
} //
} //
///////////////////////////////////////////////////////////////////////////////////////////////////////////
void USART3_IRQHandler(void) //USART3_IRQHandler //
{ //
uint8_t Clear = Clear; //
// //
if(USART_GetFlagStatus(USART3,USART_FLAG_ORE) == SET) //
{ //
USART_ReceiveData(USART3); //
} //
if(USART_GetITStatus(USART3, USART_IT_IDLE) != RESET) //
{ //
Clear=USART3->SR; //
Clear=USART3->DR; //
USART_ReceiveData(USART3); //
int IOT_Uart_Rec_Cnt = blen-DMA_GetCurrDataCounter(DMA1_Channel3); //USART3_IRQHandler
DMA_Cmd(DMA1_Channel3, DISABLE);// DMA //
if(IOT_Uart_Rec_Cnt>0) //
{ //
PushUartMsg3(IOT_Uart_Rec_Cnt); //
} //
USART_ClearITPendingBit(USART3,USART_IT_IDLE); //
DMA_SetCurrDataCounter(DMA1_Channel3,blen);// //
DMA_Cmd(DMA1_Channel3, ENABLE); //
} //
} //
///////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////
void IOT_UART_Send_Array(USART_TypeDef* USARTx,u8 * send_array,u32 num) //**
{ //**
u32 i=0; //**
while(icnt >= buff) return; ////
if(Uart_Rec_Cntwrite >= buff) uart->write = 0; ////
memset(uart->RxBuffer[uart->write],0,blen); ////
memcpy(uart->RxBuffer[uart->write],uart->DMA_Buffer,Uart_Rec_Cnt); ////
uart->cnt++; ////
uart->write++; ////
} ////
} ////
////
u8 * PopUartMsg(uart_stack * uart) ////
{ ////
if(uart->cnt>0) ////
{ ////
uart->cnt--; ////
if(uart->read >= buff) ////
uart->read = 0; ////
uart->read++; ////
return (u8*)uart->RxBuffer[uart->read-1]; ////
} ////
else ////
return NULL; ////
} ////
////
/////////////////////////////////////////////////////////////////////////////////////
使用するmainファイルをテストします.
#include "stm32f10x.h"
#include "uart.h"
#include "sys.h"
int main(void)
{
delay_init();
UART1_init();
UART2_init();
while(1)
{
u8* str = PopUartMsg2();
if(str != NULL)
{
Uart1send(str,strlen((char*)str));
}
str = PopUartMsg1();
if(str != NULL)
{
Uart2send(str,strlen((char*)str));
}
}
}最近使用してネットユーザーの言うstm 32カードが死んでシリアルポートの受信が中断することを発見して、カードが死んだ原因はシリアルポートが持っているBUGがUSARTに現れたのですFLAG_OREフラグビットがクリアできない問題.解決方法:https://blog.csdn.net/qq_42074368/article/details/104031133