usart.c

STM32驱动ADXL345

#include "stm32f10x.h"
#include "USART.h"

void USART1_SendByte(u16 Data)
{ 
   while (!(USART1->SR & USART_FLAG_TXE));
   USART1->DR = (Data & (uint16_t)0x01FF);	 
   
}
void USART1Write(u8* data,u16 len)
{
	u16 i;
//	DIR485_H ;
	for (i=0; i<len; i++){
		USART1_SendByte(data[i]);
	}
//	Delay10us(1000);
//	DIR485_L;		
}	
void USART1_Configuration(void)
{
	USART_InitTypeDef USART_InitStructure;
	USART_InitStructure.USART_BaudRate            = 115200  ;
	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(USART1, &USART_InitStructure);
	USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
	USART_Cmd(USART1, ENABLE);     
/*	DIR485_L;  */
}

void USART1_IRQHandler(void)
{
	u8 c;
	if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
	{ 	
	    c=USART1->DR;
		USART1_SendByte(c); 	    
	} 
	 
}