STM 32--3つのシリアルポートを同時に適用するアプリケーションコード
uart.c
#include "uart.h"
int fputc(int ch,FILE *p) // printf
{
USART_SendData(USART2,(u8)ch);
while(USART_GetFlagStatus(USART2,USART_FLAG_TXE)==RESET);
return ch;
}
/*******************************************************************************
* : uart_init
* : IO 1， A9,A10
* :
* :
*******************************************************************************/
void uart1_init(u32 bt)
{
GPIO_InitTypeDef GPIO_InitStructure; // ， GPIO
NVIC_InitTypeDef NVIC_InitStructure; //
USART_InitTypeDef USART_InitStructure; //
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1|RCC_APB2Periph_AFIO,ENABLE);
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_9;//TX
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;//RX
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA,&GPIO_InitStructure);
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
USART_InitStructure.USART_BaudRate=bt; // bt
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(USART1,&USART_InitStructure);
USART_Cmd(USART1, ENABLE);
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);// USART
USART_ClearFlag(USART1,USART_FLAG_TC);// USARTx
}
/*******************************************************************************
* : uart2_init
* : IO 2， A2,A3
* :
* :
*******************************************************************************/
void uart2_init(u32 bt)
{
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure; // ， GPIO
// RCC
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA , ENABLE); // UART3 GPIOB
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
// GPIO
// Configure USART2 Rx (PB.11) as input floating
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// Configure USART2 Tx (PB.10) as alternate function push-pull
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
//
USART_InitStructure.USART_BaudRate = bt;
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;
// Configure USART3
USART_Init(USART2, &USART_InitStructure);// 3
// Enable USART1 Receive interrupts
USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);
//
//USART_ITConfig(USART2, USART_IT_TXE, ENABLE);
// Enable the USART3
USART_Cmd(USART2, ENABLE);// 3
//
//Configure the NVIC Preemption Priority Bits
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
// Enable the USART3 Interrupt
NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
/*******************************************************************************
* : uart3_init
* : IO 3， B10,B11
* :
* :
*******************************************************************************/
void uart3_init(u32 bt)
{
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure; // ， GPIO
// RCC
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB , ENABLE); // UART3 GPIOB
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);
// GPIO
// Configure USART2 Rx (PB.11) as input floating
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOB, &GPIO_InitStructure);
// Configure USART2 Tx (PB.10) as alternate function push-pull
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
//
USART_InitStructure.USART_BaudRate = bt;
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;
// Configure USART3
USART_Init(USART3, &USART_InitStructure);// 3
// Enable USART1 Receive interrupts
USART_ITConfig(USART3, USART_IT_RXNE, ENABLE);
//
//USART_ITConfig(USART2, USART_IT_TXE, ENABLE);
// Enable the USART3
USART_Cmd(USART3, ENABLE);// 3
//
//Configure the NVIC Preemption Priority Bits
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
// Enable the USART3 Interrupt
NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
/*******************************************************************************
* : uart1_send_char
* : 1
* :
* :
*******************************************************************************/
void uart1_send_char(u8 temp)
{
USART_SendData(USART1,(u8)temp);
while(USART_GetFlagStatus(USART1,USART_FLAG_TXE)==RESET);
}
/*******************************************************************************
* : uart1_send_buff
* : 1
* :
* :
*******************************************************************************/
void uart1_send_buff(u8 buf[],u32 len)
{
u32 i;
for(i=0;i/*******************************************************************************
* : uart2_send_char
* : 2
* :
* :
*******************************************************************************/
void uart2_send_char(u8 temp)
{
USART_SendData(USART2,(u8)temp);
while(USART_GetFlagStatus(USART2,USART_FLAG_TXE)==RESET);
}
/*******************************************************************************
* : uart2_send_buff
* : 2
* :
* :
*******************************************************************************/
void uart2_send_buff(u8 buf[],u32 len)
{
u32 i;
for(i=0;i//--------------------------------------------------------------------------------------------------------
/*******************************************************************************
* : uart3_send_char
* : 3
* :
* :
*******************************************************************************/
void uart3_send_char(u8 temp)
{
USART_SendData(USART3,(u8)temp);
while(USART_GetFlagStatus(USART3,USART_FLAG_TXE)==RESET);
}
/*******************************************************************************
* : uart3_send_buff
* : 3
* :
* :
*******************************************************************************/
void uart3_send_buff(u8 buf[],u32 len)
{
u32 i;
for(i=0;i #ifndef _UART_H_
#define _UART_H_
#include "stm32f10x.h"
#include "stdio.h"
/*******************************************************************************
* : fputc
* : printf
* :
* :
*******************************************************************************/
int fputc(int ch,FILE *p);
/*******************************************************************************
* : uart1_init
* : IO 1，
* :
* :
*******************************************************************************/
void uart1_init(u32 bt);
/*******************************************************************************
* : uart1_send_char
* : 1
* :
* :
*******************************************************************************/
void uart1_send_char(u8 temp);
/*******************************************************************************
* : uart1_send_buff
* : 1
* :
* :
*******************************************************************************/
void uart1_send_buff(u8 buf[],u32 len);
//-----------------------------------------------------------------------------------------------------
/*******************************************************************************
* : uart2_init
* : IO 2，
* :
* :
*******************************************************************************/
void uart2_init(u32 bt);
/*******************************************************************************
* : uart2_send_char
* : 2
* :
* :
*******************************************************************************/
void uart2_send_char(u8 temp);
/*******************************************************************************
* : uart2_send_buff
* : 2
* :
* :
*******************************************************************************/
void uart2_send_buff(u8 buf[],u32 len);
//--------------------------------------------------------------------------------------------------------
/*******************************************************************************
* : uart3_init
* : IO 3，
* :
* :
*******************************************************************************/
void uart3_init(u32 bt);
/*******************************************************************************
* : uart3_send_char
* : 3
* :
* :
*******************************************************************************/
void uart3_send_char(u8 temp);
/*******************************************************************************
* : uart3_send_buff
* : 3
* :
* :
*******************************************************************************/
void uart3_send_buff(u8 buf[],u32 len); void USART1_IRQHandler(void)
{
USART_ClearFlag(USART1,USART_FLAG_TC);
if(USART_GetITStatus(USART1,USART_IT_RXNE)!=Bit_RESET)// USART
{
u8 k=USART_ReceiveData(USART1);
uart1_send_char(k+1);
}
}
void USART2_IRQHandler(void)
{
USART_ClearFlag(USART2,USART_FLAG_TC);
if(USART_GetITStatus(USART2,USART_IT_RXNE)!=Bit_RESET)// USART
{
u8 k=USART_ReceiveData(USART2);
uart1_send_char(k+1);
}
}
void USART3_IRQHandler(void)
{
USART_ClearFlag(USART3,USART_FLAG_TC);
if(USART_GetITStatus(USART3,USART_IT_RXNE)!=Bit_RESET)// USART
{
u8 k=USART_ReceiveData(USART3);
uart1_send_char(k+1);
}
}