原子哥求助 stm32f103zet6 战舰版串口2 的设置例程-QFDXXY的回答

原子哥求助 stm32f103zet6 战舰版串口2 的设置例程

2019-07-20 13:22发布

在串口2里按串口1的设置模仿一遍  但是不知道怎么写串口2的发送中断！望原子哥看看设置给些建议！

串口2设置（乱码为中文  ，不管它）
#include "usart2.h"
#include "sys.h"
#include "string.h"
#include "stdarg.h"
#include "stdio.h"
#include "delay.h"

/*ê1óÃmicroLibμÄ·½·¨*/

int fputc(int ch, FILE *f)
{
USART_SendData(USART2, (uint8_t) ch);

while (USART_GetFlagStatus(USART2, USART_FLAG_TC) == RESET) {}

return ch;
}
int GetKey (void)  {

while (!(USART2->SR & USART_FLAG_RXNE));

return ((int)(USART2->DR & 0x1FF));
}

__align(8) u8 USART2_TX_BUF[USART2_SEND_LEN];

//′®¿ú2,printf oˉêy
//è·±￡ò»′Î·￠Ëíêy¾Y2»3¬1yUSART2_MAX_SEND_LEN×Ö½ú
/*void u2_printf(char* fmt,...)
{
  int cnt=0;
  int len=0;
va_list ap;
va_start(ap,fmt);
vsprintf((char*)USART2_TX_BUF,fmt,ap);
va_end(ap);
len=strlen((const char*)USART2_TX_BUF);
while(len--)
{
while(USART_GetFlagStatus(USART2,USART_FLAG_TC)!=SET);
USART_ClearFlag(USART2,USART_FLAG_TC);
   USART_SendData(USART2,USART2_TX_BUF[cnt++]);
}
//while(USART_GetFlagStatus(USART2,USART_FLAG_TC)==RESET); //μè′yí¨μà7′«êäíê3é
//USART_SendData(USART2,(uint32_t)USART2_TX_BUF); //í¨1ydma·￠Ëí3öè￥
}*/
//////////////////////////////////////////////////////////////////
#if USART2_RX_EN //èç1ûê1ÄüáË½óêÕ
//′®¿ú2ÖD¶Ï·tÎñ3ìDò
//×￠òa,¶áè¡USARTx->SRÄü±üÃaÄaÃûÆäÃîμÄ′íÎó
u8 USART2_RX_BUF[USART2_RECV_LEN];    //½óêÕ»o3å,×î′óUSART_REC_LEN¸ö×Ö½ú.
//½óêÕ×′ì¬
//bit15￡¬ ½óêÕíê3é±êÖ¾
//bit14￡¬ ½óêÕμ½0x0d
//bit13~0￡¬ ½óêÕμ½μÄóDD§×Ö½úêyÄ¿
u16 USART2_RX_STA=0;    //½óêÕ×′ì¬±ê¼Ç
void USART2_Init(u32 pclk2,u32 bound)
{

GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
USART_InitTypeDef USART2_InitStructure;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE);//ê1ÄüUSAAT2,USART1,GPIOAê±Öó

USART_DeInit(USART2);  //¸′Î»′®¿ú2
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);

GPIO_InitStructure.GPIO_Pin=GPIO_Pin_3;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA,&GPIO_InitStructure);

  USART2_InitStructure.USART_BaudRate = 9600;//ò»°ãéèÖÃÎa9600;
USART2_InitStructure.USART_WordLength = USART_WordLength_8b;//×Ö3¤Îa8Î»êy¾Y¸ñê½
USART2_InitStructure.USART_StopBits = USART_StopBits_1;//ò»¸öí￡Ö1Î»
USART2_InitStructure.USART_Parity = USART_Parity_No;//ÎTÆæÅ¼D￡ÑéÎ»
USART2_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//ÎTó2¼têy¾Yá÷¿ØÖÆ
USART2_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //êÕ·￠Ä￡ê½
USART_Init(USART2,&USART2_InitStructure);

#if USART2_RX_EN
NVIC_InitStructure.NVIC_IRQChannel=USART2_IRQn;
   NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3;
   NVIC_InitStructure.NVIC_IRQChannelSubPriority=2;
   NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);
USART_ITConfig(USART2,USART_IT_RXNE,ENABLE);

#endif
   //USART_ITConfig(USART2,USART_IT_TXE,ENABLE);

/*#if USART2_TX_EN
NVIC_InitStructure.NVIC_IRQChannel=USART2_IRQn;
   NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3;
   NVIC_InitStructure.NVIC_IRQChannelSubPriority=1;
   NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
   NVIC_Init(&NVIC_InitStructure);


#endif */

USART_Cmd(USART2,ENABLE);

}
void USART2_IRQHandler(void)
{
  u8 res;
#ifdef OS_TICKS_PER_SEC      //èç1ûê±Öó½úÅÄêy¶¨òåáË,ËμÃ÷òaê1óÃucosIIáË.
OSIntEnter();
#endif
if(USART_GetITStatus(USART2, USART_IT_RXNE)!= RESET)
{
//USART_ClearITPendingBit(USART1,USART_IT_RXNE);
   res=USART_ReceiveData(USART2);
if((USART2_RX_STA&0x8000)==0)
{
   if(USART2_RX_STA&0x4000)
{
   if(res!=0x0a)USART2_RX_STA=0;//½óêÕ′íÎó,ÖØDÂ¿aê¼
else USART2_RX_STA|=0x8000; //½óêÕíê3éáË
}
else //»1Ã»êÕμ½0X0D
{
if(res==0x0d)USART2_RX_STA|=0x4000;
else
{
USART2_RX_BUF[USART2_RX_STA&0X3FFF]=res ;
USART2_RX_STA++;
if(USART2_RX_STA>(USART2_RECV_LEN-1))USART2_RX_STA=0;//½óêÕêy¾Y′íÎó,ÖØDÂ¿aê¼½óêÕ
}
}
   }
}

#ifdef OS_TICKS_PER_SEC      //èç1ûê±Öó½úÅÄêy¶¨òåáË,ËμÃ÷òaê1óÃucosIIáË.
OSIntExit();
#endif

   //USART_ITConfig(USART2,USART_IT_RXNE,DISABLE);
   //USART_ITConfig(USART2,USART_IT_TXE,DISABLE);
}

#endif

main.c的设置输入

#include "led.h"
#include "delay.h"
#include "key.h"
#include "sys.h"
#include "usart.h"
#include "sim900a.h"
#include "usart2.h"
//ALIENTEKÕ½½￠STM32¿a·￠°åêμÑé4
//′®¿úêμÑé
//¼¼êõÖ§3Ö￡owww.openedv.com
//1ãÖYêDDÇòíμç×ó¿Æ¼¼óDÏT1«Ë¾
u8 key,timex,times,len;
int main(void)
{
uint16_t t;

delay_init();            //Ñóê±oˉêy3õê¼»ˉ
NVIC_Configuration();    //éèÖÃNVICÖD¶Ï·Ö×é2:2Î»ÇàÕ¼óÅÏè¼¶￡¬2Î»Ïìó|óÅÏè¼¶
uart_init(9600);    //′®¿ú3õê¼»ˉÎa9600
LED_Init();       //LED¶Ë¿ú3õê¼»ˉ
LED0=0;
KEY_Init();       //3õê¼»ˉóë°′¼üá¬½óμÄó2¼t½ó¿ú
USART2_Init(36,9600);
key=KEY_Scan(0);

   while(1)
{
if(USART_RX_STA&0x8000)
{
len=USART_RX_STA&0x3fff;//μÃμ½′Ë′Î½óêÕμ½μÄêy¾Y3¤¶è
printf(" Äú·￠ËíμÄÏûÏ￠Îa: ");
for(t=0;t<len;t++)
{
USART_SendData(USART2, USART2_RX_BUF[t]);//Ïò′®¿ú2·￠Ëíêy¾Y
while(USART_GetFlagStatus(USART2,USART_FLAG_TC)!=SET);//μè′y·￠Ëí½áêø
}
printf(" ");//2åèë»»DD
USART_RX_STA=0;
}else
{
times++;
if(times%5000==0)
{
printf(" Õ½½￠STM32¿a·￠°å ′®¿úêμÑé ");
printf("ÕyμãÔ-×ó@ALIENTEK ");
}
if(times%200==0)printf("Çëêäèëêy¾Y,òÔ»Ø3μ¼ü½áêø ");
if(times%30==0)LED0=!LED0;//éáË¸LED,ìáê¾Ïμí3ÕyÔúÔËDD.
delay_ms(10);
}
}
}

/* while(1)
{
//if(key)
   //{
// u2_printf("AT+CSCS="GSM" ");
//u2_printf("AT+CMGF=1 ");
//u2_printf("AT+CMGS="13696877895" ");
//u2_printf("test for Laputa!");
   for(t=0;t<8;t++)
USART_SendData(USART1,p1[t]);
//if(sim900a_send_cmd((u8*)0X1A,"+CMGS:",1000)==0);
// if((timex%20)==0)LED1=!LED1;
   // }
   //USART2_RX_STA=0;
   if((timex%20)==0)LED0=!LED0;
   timex++;
   delay_ms(10);
   if(USART2_RX_STA&0X8000)sim_at_response(1);
// u2_printf("");
// u2_printf("");
//sim900a_sms_test();
}*/


用串口助手  发送的时候  发送的消息却不能再窗口显示出来！

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5条回答

QFDXXY

2019-07-20 16:45

正点原子发表于 2016-1-13 14:40
开发板就提供了串口2的例程了!!!看看扩展例程,GSM/GPS/蓝牙的.

那是串口1和串口3 啊。。

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