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- 2015-8-26
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- 11 小时
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5金钱
串口1接收，串口2发送,怎么调PC都收不到数据.求大神们帮我看看代码，哪里有错！！！
串口一初始代码
//////////////////////////////////////////////////////////////////////////////////
#include "sys.h"
#include "usart.h"
//////////////////////////////////////////////////////////////////////////////////
#if SYSTEM_SUPPORT_UCOS
#include "includes.h"
#endif
//////////////////////////////////////////////////////////////////////////////////
#if 1
#pragma import(__use_no_semihosting)
struct __FILE
{
int handle;
};
FILE __stdout;
_sys_exit(int x)
{
x = x;
}
int fputc(int ch, FILE *f)
{
while((USART1->SR&0X40)==0);
USART1->DR = (u8) ch;
return ch;
}
#endif
u8 USART_RX_BUF[USART_REC_LEN];
u16 USART_RX_STA=0; //????×???±ê??
void uart_init(u32 bound){
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1|RCC_APB2Periph_GPIOA, ENABLE);
USART_DeInit(USART1);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; //PA.9
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //
GPIO_Init(GPIOA, &GPIO_InitStructure); //??????PA9
//USART1_RX  A.10
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
//Usart1 NVIC
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3 ;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
USART_InitStructure.USART_BaudRate = bound;
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_ITConfig(USART1, USART_IT_RXNE, ENABLE);
USART_Cmd(USART1, ENABLE);
}
#if EN_USART1_RX
void USART1_IRQHandler(void)
{
u8 Res;
#ifdef OS_TICKS_PER_SEC
OSIntEnter();
#endif
if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
{
Res =USART_ReceiveData(USART1);//(USART1->DR);
if((USART_RX_STA&0x8000)==0)
{
if(USART_RX_STA&0x4000)
{
if(Res!=0x0a)USART_RX_STA=0;
else USART_RX_STA|=0x8000;
}
else
{
if(Res==0x0d)USART_RX_STA|=0x4000;
else
{
USART_RX_BUF[USART_RX_STA&0X3FFF]=Res ;
USART_RX_STA++;
if(USART_RX_STA>(USART_REC_LEN-1))USART_RX_STA=0;
}
}
}
}
#ifdef OS_TICKS_PER_SEC
OSIntExit();
#endif
}
#endif
串口二初始代码
//////////////////////////////////////////////////////////////////////////////////
#include "sys.h"
#include "usart2.h"
//////////////////////////////////////////////////////////////////////////////////
#if SYSTEM_SUPPORT_UCOS
#include "includes.h"
#endif
//////////////////////////////////////////////////////////////////
#if 1
#pragma import(__use_no_semihosting)
struct __FILE
{
int handle;
};
FILE __stdout2;
_sys_exit2(int x)
{
x = x;
}
int fputc2(int ch, FILE *f)
{
while((USART2->SR&0X40)==0);
USART2->DR = (u8) ch;
return ch;
}
#endif
u8 USART2_RX_BUF[USART_REC_LEN];
u16 USART2_RX_STA=0;
void uart2_init(u32 bound){
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB1Periph_USART2|RCC_APB2Periph_GPIOA, ENABLE);
USART_DeInit(USART1);
//USART1_TX PA.2
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; //PA.2
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
//USART1_RX A.3
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3 ;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
USART_InitStructure.USART_BaudRate = bound;
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_RXNE, ENABLE);
USART_Cmd(USART2, ENABLE);
}
#if EN_USART2_RX
void USART2_IRQHandler(void)
{
u8 Res;
#ifdef OS_TICKS_PER_SEC
OSIntEnter();
#endif
if(USART_GetITStatus(USART2, USART_IT_RXNE) != RESET)
{
Res =USART_ReceiveData(USART2);//(USART1->DR);
if((USART2_RX_STA&0x8000)==0)
{
if(USART2_RX_STA&0x4000)
{
if(Res!=0x0a)USART2_RX_STA=0;
else USART2_RX_STA|=0x8000;
}
else
{
if(Res==0x0d)USART2_RX_STA|=0x4000;
else
{
USART2_RX_BUF[USART2_RX_STA&0X3FFF]=Res ;
USART2_RX_STA++;
if(USART2_RX_STA>(USART_REC_LEN-1))USART2_RX_STA=0;
}
}
}
}
#ifdef OS_TICKS_PER_SEC
OSIntExit();
#endif
}
#endif
主函数
//////////////////////////////////////////////////////////////////////////////////
#include "led.h"
#include "delay.h"
#include "sys.h"
#include "usart.h"
#include "usart2.h"
int main(void)
{
u8 t;
u8 len;
delay_init();
NVIC_Configuration();
uart_init(9600);
uart2_init(9600);
while(1)
{
while(1)
{
if(USART_RX_STA&0x8000)
{
len=USART_RX_STA&0x3FFF;
for(t=0;t<len;t++)
{
USART2->DR=USART_RX_BUF[t];
while((USART2->SR&0X40)==0);
}
USART_RX_STA=0;
}else
{
}
}
}
}
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发表于 2015-10-26 12:13:38
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