串口的发送接收实验没有语法编译错误流程检查了几遍也没问题就是不可以用代码如下求大佬指教

bowen0 · 发表于 2019-4-2 17:30:23

#include "sys.h"
#include "delay.h"

u8 rdata[1];

UART_HandleTypeDef USART1_Handler;

void UART_Init(u32 bound)
{

   USART1_Handler.Instance=USART1;
   USART1_Handler.Init.BaudRate=bound;
USART1_Handler.Init.WordLength=UART_WORDLENGTH_8B;
   USART1_Handler.Init.Mode=UART_MODE_TX_RX;
USART1_Handler.Init.StopBits=UART_STOPBITS_1;
   USART1_Handler.Init.Parity=UART_PARITY_NONE;
   USART1_Handler.Init.HwFlowCtl=UART_HWCONTROL_NONE;

   HAL_UART_Init(&USART1_Handler);

}

void HAL_UART_MspInit(UART_HandleTypeDef *huart)
{
GPIO_InitTypeDef GPIOA_Init;

if(huart->Instance==USART1)
{
__HAL_RCC_GPIOA_CLK_ENABLE();
   __HAL_RCC_USART1_CLK_ENABLE();

   GPIOA_Init.Pin=GPIO_PIN_9|GPIO_PIN_10;
   GPIOA_Init.Speed=GPIO_SPEED_HIGH;
GPIOA_Init.Mode=GPIO_MODE_AF_PP;
   GPIOA_Init.Alternate=GPIO_AF7_USART1;
   HAL_GPIO_Init(GPIOA,&GPIOA_Init);

HAL_NVIC_EnableIRQ(USART1_IRQn);
   HAL_NVIC_SetPriority(USART1_IRQn,3,3);
}
}

void USART1_IQRHandler(void)
{
HAL_UART_RxCpltCallback(&USART1_Handler);

}
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
u8 rec;
   if(huart->Instance==USART1)
   {
   rec=*((huart->pRxBuffPtr)-1);
   HAL_UART_Transmit(&USART1_Handler,&rec,1,1000);
   }
}
int main(void)
{
   //u8 tab[] = "asdad";
Cache_Enable();
HAL_Init();
Stm32_Clock_Init(432,25,2,9);
delay_init(216);

   UART_Init(115200);

   HAL_UART_Receive_IT(&USART1_Handler,(u8 *)rdata,1);

   while(1)
{
//HAL_UART_Transmit(&USART1_Handler,tab, sizeof(tab), 100);
//delay_ms(100);
}

}