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- 注册时间
- 2021-4-24
- 在线时间
- 2 小时
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1金钱
void uart_init(u32 bound)
{
//UART 3õê¼»ˉéèÖÃ
UART2_Handler.Instance=USART2; //USART1
UART2_Handler.Init.BaudRate=bound; //2¨ìØÂê
UART2_Handler.Init.WordLength=UART_WORDLENGTH_8B; //×Ö3¤Îa8λêy¾Y¸ñê½
UART2_Handler.Init.StopBits=UART_STOPBITS_1; //ò»¸öí£Ö1λ
UART2_Handler.Init.Parity=UART_PARITY_NONE; //ÎTÆæżD£Ñéλ
UART2_Handler.Init.HwFlowCtl=UART_HWCONTROL_NONE; //ÎTó2¼tá÷¿Ø
UART2_Handler.Init.Mode=UART_MODE_TX_RX; //êÕ·¢Ä£ê½
HAL_UART_Init(&UART2_Handler); //HAL_UART_Init()»áê1ÄüUART1
HAL_UART_Receive_IT(&UART2_Handler, (u8 *)aRxBuffer, RXBUFFERSIZE);//¸Ãoˉêy»á¿aÆô½óêÕÖD¶Ï£o±ê־λUART_IT_RXNE£¬2¢ÇòéèÖýóêÕ»o3åòÔ¼°½óêÕ»o3å½óêÕ×î′óêy¾Yá¿
}
//UARTμ×2ã3õê¼»ˉ£¬ê±Öóê1Äü£¬òy½ÅÅäÖã¬ÖD¶ÏÅäÖÃ
//′Ëoˉêy»á±»HAL_UART_Init()μ÷óÃ
//huart:′®¿ú¾ä±ú
void HAL_UART_MspInit(UART_HandleTypeDef *huart)
{
//GPIO¶Ë¿úéèÖÃ
GPIO_InitTypeDef GPIO_Initure;
if(huart->Instance==USART2)//èç1ûêÇ′®¿ú1£¬½øDD′®¿ú1 MSP3õê¼»ˉ
{
__HAL_RCC_GPIOA_CLK_ENABLE(); //ê1ÄüGPIOAê±Öó
__HAL_RCC_USART2_CLK_ENABLE(); //ê1ÄüUSART1ê±Öó
// HAL_UART_DeInit(huart);
GPIO_Initure.Pin=GPIO_PIN_2; //PA9
GPIO_Initure.Mode=GPIO_MODE_AF_PP; //¸′óÃíÆíìêä3ö
GPIO_Initure.Pull=GPIO_PULLUP; //éÏà-
GPIO_Initure.Speed=GPIO_SPEED_FAST; //¸ßËù
GPIO_Initure.Alternate=GPIO_AF7_USART2; //¸′óÃÎaUSART1
HAL_GPIO_Init(GPIOA,&GPIO_Initure); //3õê¼»ˉPA9
GPIO_Initure.Pin=GPIO_PIN_3; //PA10
GPIO_Initure.Mode=GPIO_MODE_INPUT; //¸′óÃíÆíìêä3ö
GPIO_Initure.Pull=GPIO_NOPULL; //éÏà-
GPIO_Initure.Speed=GPIO_SPEED_FAST; //¸ßËù
GPIO_Initure.Alternate=GPIO_AF7_USART2; //¸′óÃÎaUSART1
HAL_GPIO_Init(GPIOA,&GPIO_Initure); //3õê¼»ˉPA10
#if EN_USART2_RX
HAL_NVIC_EnableIRQ(USART2_IRQn); //ê1ÄüUSART1ÖD¶Ïí¨μà
HAL_NVIC_SetPriority(USART2_IRQn,3,3); //ÇàÕ¼óÅÏ輶3£¬×óóÅÏ輶3
#endif
}
}
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
if(huart->Instance==USART2)//èç1ûêÇ′®¿ú1
{
if((USART_RX_STA&0x8000)==0)//½óêÕÎ′íê3é
{
if(USART_RX_STA&0x4000)//½óêÕμ½áË0x0d
{
if(aRxBuffer[0]!=0x0a)USART_RX_STA=0;//½óêÕ′íÎó,ÖØD¿aê¼
else USART_RX_STA|=0x8000; //½óêÕíê3éáË
}
else //»1ûêÕμ½0X0D
{
if(aRxBuffer[0]==0x0d)USART_RX_STA|=0x4000;
else
{
USART_RX_BUF[USART_RX_STA&0X3FFF]=aRxBuffer[0] ;
USART_RX_STA++;
if(USART_RX_STA>(USART_REC_LEN-1))USART_RX_STA=0;//½óêÕêy¾Y′íÎó,ÖØD¿aê¼½óêÕ
}
}
}
}
}
//′®¿ú1ÖD¶Ï·tÎñ3ìDò
//void USART2_IRQHandler(void)
//{
// u32 timeout=0;
// u32 maxDelay=0x1FFFF;
//#if SYSTEM_SUPPORT_OS //ê1óÃOS
// OSIntEnter();
//#endif
//
// HAL_UART_IRQHandler(&UART2_Handler); //μ÷óÃHAL¿aÖD¶Ï′|àí1«óÃoˉêy
//
// timeout=0;
// while (HAL_UART_GetState(&UART2_Handler) != HAL_UART_STATE_READY)//μè′y¾íD÷
// {
// timeout++;////3¬ê±′|àí
// if(timeout>maxDelay) break;
// }
//
// timeout=0;
// while(HAL_UART_Receive_IT(&UART2_Handler, (u8 *)aRxBuffer, RXBUFFERSIZE) != HAL_OK)//ò»′Î′|àííê3éÖ®oó£¬ÖØD¿aÆôÖD¶Ï2¢éèÖÃRxXferCountÎa1
// {
// timeout++; //3¬ê±′|àí
// if(timeout>maxDelay) break;
// }
//#if SYSTEM_SUPPORT_OS //ê1óÃOS
// OSIntExit();
//#endif
//}
//#endif
/*ÏÂÃæ′úÂëÎòÃÇÖ±½ó°ÑÖD¶Ï¿ØÖÆÂß¼-D′ÔúÖD¶Ï·tÎñoˉêyÄú2¿¡£
ËμÃ÷£o2éóÃHAL¿a′|àíÂß¼-£¬D§Âê2»¸ß¡£*/
//′®¿ú1ÖD¶Ï·tÎñ3ìDò
void USART2_IRQHandler(void)
{
u8 Res;
#if SYSTEM_SUPPORT_OS //ê1óÃOS
OSIntEnter();
#endif
if((__HAL_UART_GET_FLAG(&UART2_Handler,UART_FLAG_RXNE)!=RESET)) //½óêÕÖD¶Ï(½óêÕμ½μÄêy¾Y±ØDëêÇ0x0d 0x0a½áÎ2)
{
HAL_UART_Receive(&UART2_Handler,&Res,1,1000);
if((USART_RX_STA&0x8000)==0)//½óêÕÎ′íê3é
{
if(USART_RX_STA&0x4000)//½óêÕμ½áË0x0d
{
if(Res!=0x0a)USART_RX_STA=0;//½óêÕ′íÎó,ÖØD¿aê¼
else USART_RX_STA|=0x8000; //½óêÕíê3éáË
}
else //»1ûêÕμ½0X0D
{
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;//½óêÕêy¾Y′íÎó,ÖØD¿aê¼½óêÕ
}
}
}
}
HAL_UART_IRQHandler(&UART2_Handler);
#if SYSTEM_SUPPORT_OS //ê1óÃOS
OSIntExit();
#endif
}
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