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標題: stm32F405RG的usart1測試源程序 [打印本頁]
作者: 噢噢噢    時間: 2018-3-14 09:35
標題: stm32F405RG的usart1測試源程序
stm32F405RG的usart1測試程序

單片機源程序如下:
  1. #include "stm32f4xx.h"
  2. #include "usart.h"
  3. #include "delay.h"



  7. void My_USART1_Init(void)
  8. {
  9.           GPIO_InitTypeDef  GPIO_InitStructure;
  10.         USART_InitTypeDef USART_InitStructure;
  11.         NVIC_InitTypeDef NVIC_InitStructure;
  12.        
  13. RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);//使能USART1時鐘
  14.         RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA,ENABLE);
  15.        
  16.         GPIO_PinAFConfig(GPIOA,GPIO_PinSource9,GPIO_AF_USART1);
  17.         GPIO_PinAFConfig(GPIOA,GPIO_PinSource10,GPIO_AF_USART1);

  19.           GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
  20.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  21.   GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  22.   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
  23.   GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
  24.   GPIO_Init(GPIOA, &GPIO_InitStructure);
  25.        
  26. GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
  27.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  28.   GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  29.   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
  30.   GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
  31.   GPIO_Init(GPIOA, &GPIO_InitStructure);
  32.        
  33.         USART_InitStructure.USART_BaudRate=115200;
  34.         USART_InitStructure.USART_HardwareFlowControl=USART_HardwareFlowControl_None;
  35.         USART_InitStructure.USART_Mode=USART_Mode_Rx|USART_Mode_Tx;
  36.         USART_InitStructure.USART_Parity=USART_Parity_No;
  37.         USART_InitStructure.USART_StopBits=USART_StopBits_1;
  38.         USART_InitStructure.USART_WordLength=USART_WordLength_8b;
  39.        
  40.         USART_Init(USART1,&USART_InitStructure);
  41.         USART_Cmd(USART1 ,ENABLE);
  42.   
  43.         USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);
  44.        
  45.         NVIC_InitStructure.NVIC_IRQChannel=USART1_IRQn;
  46.         NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
  47.         NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1;
  48.         NVIC_InitStructure.NVIC_IRQChannelSubPriority=1;
  49.         NVIC_Init(&NVIC_InitStructure);
  50.        
  51.        
  52. }

  54. void USART1_IRQHandler(void)
  55. {
  56.         u8 res;
  57.         if(USART_GetITStatus(USART1,USART_IT_RXNE)){
  58.                
  59.                 res=USART_ReceiveData(USART1);
  60.                 USART_SendData(USART1,res);
  61.         }

  63. }
  64. int main(void)
  65. {
  66.    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
  67.         My_USART1_Init();
  68.         while(1);
  69. }

復制代碼

所有資料51hei提供下載:
USART1.rar (455.46 KB, 下載次數(shù): 74)


作者: 初出茅廬111    時間: 2019-10-16 22:45
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