stm32mini板子串口开启一会失败一会成功不知道怎样解决

2019-10-15 22:14发布

主函数；
#include "led.h"
#include "delay.h"
#include "sys.h"
#include "usart.h"
#include "arduino.h"
//ALIENTEK Mini STM32¿a·￠°å·¶ày′úÂë3
//′®¿úêμÑé
//¼¼êõÖ§3Ö￡owww.openedv.com
//1ãÖYêDDÇòíμç×ó¿Æ¼¼óDÏT1«Ë¾
int main(void)
{
u8 t;
u8 len;
u16 times=0;
u8 ax;
u8 bx='*';    //*μÄêμ¼êÖμÆäêμ′ú±í0x42ò2¾íêÇASCIIμÄÖμêÇ42

delay_init();            //Ñóê±oˉêy3õê¼»ˉ
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);// éèÖÃÖD¶ÏóÅÏè¼¶·Ö×é
uart_init(9600);    //′®¿ú3õê¼»ˉÎa9600
LED_Init();          //3õê¼»ˉóëLEDá¬½óμÄó2¼t½ó¿ú
  USART3_Config();
while(1)
{

delay_ms(100);
LED0=!LED0;
//GPIO_ResetBits(GPIOA,GPIO_Pin_8);
LED1=0;
ax=arduino_Analysis();
printf("sudo=%d ",sudu);
printf("a=%d ",ax);
//printf("%d ",bx);
//delay_ms(1000);

//////////////////////////////////Ô-oˉêy
// LED0=!LED0;
// if(USART_RX_STA&0x8000)
// {
// len=USART_RX_STA&0x3fff;//μÃμ½′Ë′Î½óêÕμ½μÄêy¾Y3¤¶è
// printf(" Äú·￠ËíμÄÏûÏ￠Îa: ");
// for(t=0;t<len;t++)
// {
// USART1->DR=USART_RX_BUF[t];
// while((USART1->SR&0X40)==0);//μè′y·￠Ëí½áêø
// }
// printf(" ");//2åèë»»DD
// USART_RX_STA=0;
// }else
// {
// times++;
// if(times%5000==0)
// {
// printf(" ALIENTEK MiniSTM32¿a·￠°å ′®¿úêμÑé ");
// printf("ÕyμãÔ-×ó@ALIENTEK ");
// }
// if(times%200==0)printf("Çëêäèëêy¾Y,òÔ»Ø3μ¼ü½áêø ");
// //éáË¸LED,ìáê¾Ïμí3ÕyÔúÔËDD.
// delay_ms(10);
// //}
// }
}
}

arduino.c函数
#include "arduino.h"

u8 Arduino_sudo;
u8 Arduino_jiaodu;
u8 sudu;
u8 jiaodu;
u8 x=7;
u8 USART3_RX_BUF[USART_REC_LEN];    //½óêÕ»o3å,×î′óUSART_REC_LEN¸ö×Ö½ú.
//½óêÕ×′ì¬
u8 Arduino_Receive_Data[11];
u8 Arduino_receive_counter=0;
u8 Arduino_receive_flag=0;
u8 Arduino_receive_temp[10]={0x42,0x39,0x49,0x39,0x45,0x39,0x49,0x54,0x39,0X39};
//u8 res[8];
//bit15￡¬ ½óêÕíê3é±êÖ¾
//bit14￡¬ ½óêÕμ½0x0d
//bit13~0￡¬ ½óêÕμ½μÄóDD§×Ö½úêyÄ¿
u16 USART3_RX_STA=0;    //½óêÕ×′ì¬±ê¼Ç

void USART3_Config(void) //á¬½óêy′«μçì¨  3õê¼»ˉ ÅäÖÃUSART2
{
GPIO_InitTypeDef    GPIO_InitStructure; //′®¿ú¶Ë¿úÅäÖÃ½á11ìå±äá¿
USART_InitTypeDef USART_InitStructure;  //′®¿ú2ÎêyÅäÖÃ½á11ìå±äá¿
NVIC_InitTypeDef NVIC_InitStructure;

//μú12½￡o′ò¿aGPIOoíUSART2¿¼tμÄê±Öó
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);    //′ò¿aGPIOAê±ÖóoíGPIOA¸′óÃê±Öó
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE); //′ò¿a′®¿ú¸′óÃê±Öó
USART_DeInit(USART3);  //¸′Î»′®¿ú1

//μú22½￡o½«USART2 Tx￡¨·￠Ëí½Å￡©μÄGPIOÅäÖÃÎaíÆíì¸′óÃÄ￡ê½
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;    //′®¿ú2·￠Ëí½Å
//GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;    //¸′óÃíÆíìêä3ö
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;    //êä3öËù¶è50MHz
GPIO_Init(GPIOB, &GPIO_InitStructure);    //3õê¼»ˉGPIOA

//μú32½￡o½«USART2 Rx￡¨½óêÕ½Å￡©μÄGPIOÅäÖÃÎa¸¡¿ÕêäèëÄ￡ê½
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;    //′®¿ú2½óêÕ½Å
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;  //¸¡¿Õêäèë
//GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; //éÏà-êäèë
GPIO_Init(GPIOB, &GPIO_InitStructure);    //3õê¼»ˉGPIOA

NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3 ; //ÇàÕ¼óÅÏè¼¶ 3
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; //×óóÅÏè¼¶ 3
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ í¨μàê1Äü
NVIC_Init(&NVIC_InitStructure);  //ÖD¶ÏóÅÏè¼¶3õê¼»ˉ

//μú42½￡oÅäÖÃUSART12Îêy
USART_InitStructure.USART_BaudRate          = 115200;    //2¨ìØÂêéèÖÃ￡o57600
USART_InitStructure.USART_WordLength          = USART_WordLength_8b;    //êy¾YÎ»êyéèÖÃ￡o8Î»
USART_InitStructure.USART_StopBits          = USART_StopBits_1;    //í￡Ö1Î»éèÖÃ￡o1Î»
USART_InitStructure.USART_Parity             = USART_Parity_No;    //êÇ·ñÆæÅ¼D￡Ñé￡oÎT
USART_InitStructure.USART_HardwareFlowControl  = USART_HardwareFlowControl_None; //ó2¼tá÷¿ØÖÆÄ￡ê½éèÖÃ￡oÃ»óDê1Äü
USART_InitStructure.USART_Mode                = USART_Mode_Rx ;//| USART_Mode_Tx;    //½óêÕóë·￠Ëí¶¼ê1Äü
USART_Init(USART3, &USART_InitStructure);    //3õê¼»ˉUSART2

//′ò¿a·￠ËíÖD¶Ïoí½óêÕÖD¶Ï(èç1ûDèòaÖD¶Ï)
   // USART_ITConfig(USART2, USART_IT_TXE, ENABLE);  // ê1ÄüÖ¸¶¨μÄUSART1·￠ËíÖD¶Ï ￡»
    USART_ITConfig(USART3, USART_IT_RXNE, ENABLE); // ê1ÄüÖ¸¶¨μÄUSART1½óêÕÖD¶Ï ￡»

//μú52½￡oê1Äü USART2￡¬ ÅäÖÃíê±Ï
USART_Cmd(USART3, ENABLE);    //ê1Äü USART2

//èçÏÂóï¾ä½a¾öμú1¸ö×Ö½úÎT·¨Õyè··￠Ëí3öè￥μÄÎêìa
USART_ClearFlag(USART3, USART_FLAG_TC);             //Çå′®¿ú2·￠Ëí±êÖ¾

}

void USART3_IRQHandler(void)             //′®¿ú3ÖD¶Ï·tÎñ3ìDò
{

if(USART_GetITStatus(USART3, USART_IT_RXNE) != RESET)  //½óêÕÖD¶ÏóDD§,èô½óêÕêy¾Y¼Ä′æÆ÷Âú
   {
Arduino_Receive_Data[Arduino_receive_counter]=USART_ReceiveData(USART3);

   if(Arduino_receive_counter==0&& Arduino_Receive_Data[0]!='*') return ;/////87=W ê×Ö¡
   Arduino_receive_counter++;

   if(Arduino_receive_counter==10)
   {
   Arduino_receive_counter=0;
   Arduino_receive_flag=1;


      }
}
}

u8 arduino_Analysis(void)
{
if(Arduino_receive_flag==1)
{
   Arduino_receive_flag=0;
memcpy(Arduino_receive_temp,Arduino_Receive_Data,10);
// printf("0=%d ",Arduino_receive_temp[0]);
// printf("1=%d ",Arduino_receive_temp[1]);
// printf("2=%d ",Arduino_receive_temp[2]);
// printf("3=%d ",Arduino_receive_temp[3]);
// printf("4=%d ",Arduino_receive_temp[4]);
// printf("5=%d ",Arduino_receive_temp[5]);
// printf("6=%d ",Arduino_receive_temp[6]);
// printf("7=%d ",Arduino_receive_temp[7]);
// printf("8=%d ",Arduino_receive_temp[8]);
// printf("8=%d ",x);

}

//Res =Arduino_Receive_Data[Arduino_receive_counter]; //¶áè¡½óêÕμ½μÄêy¾Y
return Arduino_receive_temp[1];
sudu=Arduino_receive_temp[7];

}

arduino.h函数如下
#ifndef _ARDUINO_H
#define _ARDUINO_H
#include "stdio.h"
#include "usart.h"
#include "stm32f10x.h"
#include "stm32f10x_conf.h"
#include "string.h"

#include "sys.h"

void USART3_Config(void);
//void USART3_IRQHandler(void);
//void TIM4_Init(u16 arr,u16 psc);
//void TIM4_IRQHandler(void);
void TIM4_Init(u16 arr,u16 psc);
u8 arduino_Analysis(void);

#define USART3_REC_LEN    200    //¶¨òå×î′ó½óêÕ×Ö½úêy 200
#define EN_USART3_RX 1 //ê1Äü￡¨1￡©/½ûÖ1￡¨0￡©′®¿ú1½óêÕ
extern u8 sudu;

//èç1ûÏë′®¿úÖD¶Ï½óêÕ￡¬Çë2»òa×￠êíòÔÏÂoê¶¨òå

#endif

有没有大神指导到底是怎么回事，一直找不到什么原因

友情提示: 此问题已得到解决，问题已经关闭,关闭后问题禁止继续编辑，回答。

该问题目前已经被作者或者管理员关闭, 无法添加新回复

1条回答

正点原子

1楼-- · 2019-10-16 01:40

是不是你电脑有其他usb设备拔出和接入?

stm32mini板子串口开启一会失败一会成功不知道怎样解决

一周热门更多>

相关问题

相关文章

stm32mini板子串口开启一会失败一会成功不知道怎样解决

打开微信“扫一扫”，打开网页后点击屏幕右上角分享按钮

一周热门 更多>

相关问题

相关文章

采纳回答

编辑标签

举报内容

检举类型

检举原因

检举说明(必填)

一周热门更多>