485通讯中加了奇偶校验后发送到串口就是乱码

lkjhbbb · 发表于 2016-10-15 18:00:39

在不加奇偶校验后从上位机接收到的数据并把它发到串口中都没有问题，但是加了奇校验后通过中断查看到接收到串口上位机发来的数据是对的  但是把它发送到串口后得到的就是乱码。
用了正点原子提供的串口调试助手和网上下载的丁丁的都是出现乱码问题，求教有什么办法解决吗

#include "Manage.h"
#include "sys.h"

#define WAIT_FOR_RECEIVE_END 1
#define MANAGE_RECEIVE_END 2
#define WAIT_FOR_SEND_END 3

#define MANAGE_COMMAND_LENGTH 50

extern u8 ManageReceiveCommand[MANAGE_COMMAND_LENGTH]; // 接收缓冲区
extern u8 ManageSendCommand[MANAGE_COMMAND_LENGTH]; //发送缓冲区
extern u8 ManageCommandIndex ;

extern u8 gManageState;

void ManageUartInit(u32 BaudRate)
{
GPIO_InitTypeDef GPIO_InitStructure;//GPIO配置结构体
USART_InitTypeDef USART_InitStructure;//串口配置结构体
NVIC_InitTypeDef NVIC_InitStructure;

/*使能使用的外设时钟*/
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1|RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB, ENABLE);

/*GPIOA_Pin_9----USART1_Tx发送端*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);

/*GPIOA_Pin_10----USART1_Rx接收端*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);

/*GPIOB_Pin_15----收发使能端，0接收，1发送*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);

GPIO_SetBits(GPIOB,GPIO_Pin_0);//485接收
   //Usart1 NVIC 配置添加

NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3 ;//抢占优先级3
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; //子优先级3
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道使能
NVIC_Init(&NVIC_InitStructure); //根据指定的参数初始化VIC寄存器
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);// 设置中断优先级分组2

USART_DeInit(USART1);

USART_InitStructure.USART_BaudRate = BaudRate;//串口波特率
USART_InitStructure.USART_WordLength = USART_WordLength_8b;//8位数据位
USART_InitStructure.USART_StopBits = USART_StopBits_2;//2位停止位
USART_InitStructure.USART_Parity = USART_Parity_Odd;//奇校验
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//无硬件流控制
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//发送与接收模式

USART_Init(USART1, &USART_InitStructure); //初始化串口1
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);//开启串口接受中断
USART_Cmd(USART1, ENABLE);                   //使能串口1

}

void USART1_IRQHandler(void)
{
u8 ch;

if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
{
ch = USART_ReceiveData(USART1);
ManageReceiveCommand[ManageCommandIndex++] = ch;
if (ch == '\n')
{
gManageState = MANAGE_RECEIVE_END;
}
USART_ClearITPendingBit(USART1,USART_IT_RXNE);
}

}

主函数
#include "led.h"
#include "delay.h"
#include "sys.h"
#include "usart.h"
#include "Manage.h"

#define MANAGE_COMMAND_LENGTH 50

#define WAIT_FOR_RECEIVE_END 1
#define MANAGE_RECEIVE_END 2
#define WAIT_FOR_SEND_END 3
u8 gManageState;

u8 ManageReceiveCommand[MANAGE_COMMAND_LENGTH];//接收缓冲区
u8 SendBuf[MANAGE_COMMAND_LENGTH];//发送缓冲区

u8 ManageCommandIndex ;//接收数目

int main(void)
{

u8 t;
ManageCommandIndex = 0;
gManageState = 1;
delay_init();            //延时函数初始化
ManageUartInit(9600);    //串口初始化为9600

while(1)
{
if(gManageState == MANAGE_RECEIVE_END)
{
USART_ITConfig(USART1, USART_IT_RXNE, DISABLE);//失能串口1接收中断
delay_us(500);  //延时
GPIO_ResetBits(GPIOB, GPIO_Pin_0); //485为发送，我电路有个反相与一般置0接收不同
for(t=0;t<ManageCommandIndex;t++)
{
USART_SendData(USART1,ManageReceiveCommand[t]);
while(!(USART1->SR & USART_FLAG_TXE));//等待发送完成
}
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);//使能串口1接收中断
      delay_us(500);  //延时
   GPIO_SetBits(GPIOB,GPIO_Pin_0);//485接收
gManageState = 1;
ManageCommandIndex = 0;
}

}