使用5个串口，现在串口3与串口5收不到东西，1.2.4都正常

2019-08-13 20:16发布

#if EN_USART3_RX //èç1ûê1ÄüáË½óêÕ
//′®¿ú1ÖD¶Ï·tÎñ3ìDò
//×￠òa,¶áè¡USARTx->SRÄü±üÃaÄaÃûÆäÃîμÄ′íÎó
u8 USART_RX_BUF3[USART_REC_LEN];    //½óêÕ»o3å,×î′óUSART_REC_LEN¸ö×Ö½ú.

//½óêÕ×′ì¬
//bit15￡¬ ½óêÕíê3é±êÖ¾
//bit14￡¬ ½óêÕμ½0x0d
//bit13~0￡¬ ½óêÕμ½μÄóDD§×Ö½úêyÄ¿
u16 USART_RX_STA3=0;    //½óêÕ×′ì¬±ê¼Ç

void uart3_init(u32 bound){
  //GPIO¶Ë¿úéèÖÃ
  GPIO_InitTypeDef GPIO_InitStructure3;
USART_InitTypeDef USART_InitStructure3;
NVIC_InitTypeDef NVIC_InitStructure3;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE); //ê1ÄüUSART3

//////////////////////////////////////////////////////////////////////////////////////
//USART3_TX GPIOB.10
  GPIO_InitStructure3.GPIO_Pin = GPIO_Pin_10; //PB.10
  GPIO_InitStructure3.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure3.GPIO_Mode = GPIO_Mode_AF_PP; //¸′óÃíÆíìêä3ö
  GPIO_Init(GPIOB, &GPIO_InitStructure3);//3õê¼»ˉGPIOB.10

  //USART3_RX    GPIOB.11 3õê¼»ˉ
  GPIO_InitStructure3.GPIO_Pin = GPIO_Pin_11;//PB.11
  GPIO_InitStructure3.GPIO_Mode = GPIO_Mode_IN_FLOATING;//¸¡¿Õêäèë
  GPIO_Init(GPIOB, &GPIO_InitStructure3);//3õê¼»ˉGPIOB.11

  //Usart2 NVIC ÅäÖÃ
  NVIC_InitStructure3.NVIC_IRQChannel = USART3_IRQn;
NVIC_InitStructure3.NVIC_IRQChannelPreemptionPriority=0 ;//ÇàÕ¼óÅÏè¼¶0
NVIC_InitStructure3.NVIC_IRQChannelSubPriority = 3; //×óóÅÏè¼¶3
NVIC_InitStructure3.NVIC_IRQChannelCmd = ENABLE; //IRQí¨μàê1Äü
NVIC_Init(&NVIC_InitStructure3); //¸ù¾YÖ¸¶¨μÄ2Îêy3õê¼»ˉVIC¼Ä′æÆ÷

   //USART 3õê¼»ˉéèÖÃ
USART_InitStructure3.USART_BaudRate = bound;//′®¿ú2¨ìØÂê
USART_InitStructure3.USART_WordLength = USART_WordLength_8b;//×Ö3¤Îa8Î»êy¾Y¸ñê½
USART_InitStructure3.USART_StopBits = USART_StopBits_1;//ò»¸öí￡Ö1Î»
USART_InitStructure3.USART_Parity = USART_Parity_No;//ÎTÆæÅ¼D￡ÑéÎ»
USART_InitStructure3.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//ÎTó2¼têy¾Yá÷¿ØÖÆ
USART_InitStructure3.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //êÕ·￠Ä￡ê½

  USART_Init(USART3, &USART_InitStructure3); //3õê¼»ˉ′®¿ú3
  USART_ITConfig(USART3, USART_IT_RXNE, ENABLE);//¿aÆô′®¿ú½óêüÖD¶Ï
  USART_Cmd(USART3, ENABLE);                   //ê1Äü′®¿ú3

}

void USART3_IRQHandler(void)             //′®¿ú3ÖD¶Ï·tÎñ3ìDò
{
u8 Res3;
#if SYSTEM_SUPPORT_OS //èç1ûSYSTEM_SUPPORT_OSÎaÕæ￡¬ÔòDèòaÖ§3ÖOS.
OSIntEnter();
#endif
if(USART_GetITStatus(USART3, USART_IT_RXNE) != RESET)  //½óêÕÖD¶Ï(½óêÕμ½μÄêy¾Y±ØDëêÇ0x0d 0x0a½áÎ2)
{
Res3 =USART_ReceiveData(USART3); //¶áè¡½óêÕμ½μÄêy¾Y

if((USART_RX_STA3&0x8000)==0)//½óêÕÎ′íê3é
{
if(USART_RX_STA3&0x4000)//½óêÕμ½áË0x0d
{
if(Res3!=0x0a)USART_RX_STA3=0;//½óêÕ′íÎó,ÖØDÂ¿aê¼
else USART_RX_STA3|=0x8000; //½óêÕíê3éáË
}
else //»1Ã»êÕμ½0X0D
{
if(Res3==0x0d)USART_RX_STA3|=0x4000;
else
{
USART_RX_BUF3[USART_RX_STA3&0X3FFF]=Res3 ;
USART_RX_STA3++;
if(USART_RX_STA3>(USART_REC_LEN-1))USART_RX_STA3=0;//½óêÕêy¾Y′íÎó,ÖØDÂ¿aê¼½óêÕ
}
}
}
   }

#if SYSTEM_SUPPORT_OS //èç1ûSYSTEM_SUPPORT_OSÎaÕæ￡¬ÔòDèòaÖ§3ÖOS.
OSIntExit();
#endif
}
#endif

#if EN_USART5_RX
u8 USART_RX_BUF5[USART_REC_LEN];
u16 USART_RX_STA5=0;

void uart5_init(u32 bound){
  GPIO_InitTypeDef GPIO_InitStructure5;
USART_InitTypeDef USART_InitStructure5;
NVIC_InitTypeDef NVIC_InitStructure5;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART5,ENABLE);
//////////////////////////////////////////////////////////////////////////////////////
//USART5_TX GPIOC.12
  GPIO_InitStructure5.GPIO_Pin = GPIO_Pin_12; //PC.12
  GPIO_InitStructure5.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure5.GPIO_Mode = GPIO_Mode_AF_PP; //¸′óÃíÆíìêä3ö
  GPIO_Init(GPIOC, &GPIO_InitStructure5);//3õê¼»ˉGPIOC.12

  //USART5_RX    GPIOD.2 3õê¼»ˉ
  GPIO_InitStructure5.GPIO_Pin = GPIO_Pin_2;//PC.11
  GPIO_InitStructure5.GPIO_Mode = GPIO_Mode_IN_FLOATING;//¸¡¿Õêäèë
  GPIO_Init(GPIOD, &GPIO_InitStructure5);//3õê¼»ˉGPIOB.11

  //Usart5 NVIC ÅäÖÃ
  NVIC_InitStructure5.NVIC_IRQChannel = UART5_IRQn;
NVIC_InitStructure5.NVIC_IRQChannelPreemptionPriority=0 ;//ÇàÕ¼óÅÏè¼¶3
NVIC_InitStructure5.NVIC_IRQChannelSubPriority = 5; //×óóÅÏè¼¶3
NVIC_InitStructure5.NVIC_IRQChannelCmd = ENABLE; //IRQí¨μàê1Äü
NVIC_Init(&NVIC_InitStructure5); //¸ù¾YÖ¸¶¨μÄ2Îêy3õê¼»ˉVIC¼Ä′æÆ÷

   //USART 3õê¼»ˉéèÖÃ
USART_InitStructure5.USART_BaudRate = bound;//′®¿ú2¨ìØÂê
USART_InitStructure5.USART_WordLength = USART_WordLength_8b;//×Ö3¤Îa8Î»êy¾Y¸ñê½
USART_InitStructure5.USART_StopBits = USART_StopBits_1;//ò»¸öí￡Ö1Î»
USART_InitStructure5.USART_Parity = USART_Parity_No;//ÎTÆæÅ¼D￡ÑéÎ»
USART_InitStructure5.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//ÎTó2¼têy¾Yá÷¿ØÖÆ
USART_InitStructure5.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //êÕ·￠Ä￡ê½

  USART_Init(UART5, &USART_InitStructure5); //3õê¼»ˉ′®¿ú5
  USART_ITConfig(UART5, USART_IT_RXNE, ENABLE);//¿aÆô′®¿ú½óêüÖD¶Ï
  USART_Cmd(UART5, ENABLE);                   //ê1Äü′®¿ú5

}

void UART5_IRQHandler(void)             //′®¿ú5ÖD¶Ï·tÎñ3ìDò
{
u8 Res5;
#if SYSTEM_SUPPORT_OS //èç1ûSYSTEM_SUPPORT_OSÎaÕæ￡¬ÔòDèòaÖ§3ÖOS.
OSIntEnter();
#endif
if(USART_GetITStatus(UART5, USART_IT_RXNE) != RESET)  //½óêÕÖD¶Ï(½óêÕμ½μÄêy¾Y±ØDëêÇ0x0d 0x0a½áÎ2)
{
Res5 =USART_ReceiveData(UART5); //¶áè¡½óêÕμ½μÄêy¾Y

if((USART_RX_STA5&0x8000)==0)//½óêÕÎ′íê3é
{
if(USART_RX_STA5&0x4000)//½óêÕμ½áË0x0d
{
if(Res5!=0x0a)USART_RX_STA5=0;//½óêÕ′íÎó,ÖØDÂ¿aê¼
else USART_RX_STA5|=0x8000; //½óêÕíê3éáË
}
else
{
if(Res5==0x0d)USART_RX_STA5|=0x4000;
else
{
USART_RX_BUF5[USART_RX_STA5&0X3FFF]=Res5 ;
USART_RX_STA5++;
if(USART_RX_STA5>(USART_REC_LEN-1))USART_RX_STA5=0;//½óêÕêy¾Y′íÎó,ÖØDÂ¿aê¼½óêÕ
}
}
}
   }

#if SYSTEM_SUPPORT_OS //èç1ûSYSTEM_SUPPORT_OSÎaÕæ￡¬ÔòDèòaÖ§3ÖOS.
OSIntExit();
#endif
}
#endif

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。