usart.h~

CH372下位机

#ifndef __USART_H__
#define __USART_H__
#include  <iom128v.h>
unsigned char  HexTable[]={0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D,0x0E,0x0F};
unsigned char  interrupt_come[]={"发生中断\n"};
unsigned char  USB_INTER_EP1_IN[]={"USB_INT_EP1_IN\n"};
unsigned char  USB_INTER_EP1_OUT[]={"USB_INT_EP1_OUT\n"};
unsigned char  USB_INTER_EP2_IN[]={"USB_INT_EP2_IN\n"};
unsigned char  USB_INTER_EP2_OUT[]={"USB_INT_EP2_OUT\n"};
unsigned char  init_ok[]={"初始化完成\n"};
void uart1_init(void)
{	
	#asm("cli")//关闭一切中断
	UCSR1B = 0x00; //disable while setting baud rate
	UCSR1A = 0x00;
	UCSR1C = 0x06;//异步，8位数据，无奇偶校验，一个停止位，无倍速
	//UBRRL = 0x67; //set baud rate lo :9600
	//UBRRL = 0x33; //set baud rate lo   :19200
	UBRR1L = 0x0B; //set baud rate lo :38400
	UBRR1H = 0x00; //set baud rate hi
	UCSR1B = 0x98; 
	#asm("SEI") //开中断
}
void USART_Transmit( unsigned char data )
{
	/* Wait for empty transmit buffer */
	while ( !( UCSR1A & (1<<UDRE1)) )
	;
	/* Put data into buffer, sends the data */
	UDR1 = data;
}
/*void print(char *str)
{
	while((*str)!='\0')
  	{
		USART_Transmit(*str);
		str++;
  	}
  
}*/ 
/*字符串输出函数 */    
int print(char *str)
{
    while (*str)
    {
        USART_Transmit(*str);
        str++;
    }    
    USART_Transmit(0x0a);//回车换行
    USART_Transmit(0x0d);
    return 1;
}

void PrintHex(unsigned char x)
{
	USART_Transmit(HexTable[x>>4]);
 	USART_Transmit(HexTable[x&0xf]);
 	//USART_Transmit(' ');
}
#endif