stm32f407单片机底层应用程序_usart6

1. usart6.c

   #include "usart6.h"

   void My_USART6_Init(USART_TypeDef* USARTx,u32 bound)
   {
   GPIO_InitTypeDef GPIO_InitStructure;
   USART_InitTypeDef USART_InitStructure;
   NVIC_InitTypeDef NVIC_InitStructure;

    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC,ENABLE);
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART6,ENABLE);
    	
    //GPIO
    GPIO_PinAFConfig(GPIOC, GPIO_PinSource6, GPIO_AF_USART6);
    GPIO_PinAFConfig(GPIOC, GPIO_PinSource7, GPIO_AF_USART6);
    	
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6|GPIO_Pin_7; 
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
    GPIO_Init(GPIOC,&GPIO_InitStructure);
    		
    //USART
    USART_InitStructure.USART_BaudRate = bound;
    USART_InitStructure.USART_WordLength = USART_WordLength_8b;
    USART_InitStructure.USART_StopBits = USART_StopBits_1;
    USART_InitStructure.USART_Parity = USART_Parity_No;
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
    USART_InitStructure.USART_Mode =  USART_Mode_Rx | USART_Mode_Tx;	
    USART_Init(USARTx,&USART_InitStructure);
    
   
    
    //NVIC
    NVIC_InitStructure.NVIC_IRQChannel = USART6_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
    
    	
    USART_DMACmd(USARTx, USART_DMAReq_Rx, ENABLE);	
    USART_DMACmd(USARTx, USART_DMAReq_Tx, ENABLE);	
    USART_ITConfig(USARTx, USART_IT_IDLE, ENABLE); 
    
    USART_Cmd(USARTx,ENABLE);	
   

   }

2.usart6.h

#ifndef  __USART6_H
#define  __USART6_H
#include "sys.h"


void My_USART6_Init(USART_TypeDef* USARTx,u32 bound);


#endif