serial.s90

Mega8完美下载 包含源程序

sendchar:
; 1.	#include "defines.h"
; 2.	
; 3.	void sendchar(char c)
; 4.	{
; 5.	#ifdef _ATMEGA32
; 6.	   UDR=c;
; 7.	   while (!(UCSRA & (1<<TXC)));                     //wait until byte sendt
; 8.	   UCSRA |= (1<<TXC);                               //delete TXCflag
; 9.	#endif
; 10.	#ifdef _ATMEGA161
; 11.	   UDR0=c;
        OUT     LOW(12),R16
Y_0003:
; 12.	   while (!(UCSR0A & (1<<TXC0)));                   //wait until byte sendt
        SBIS    LOW(11),LOW(6)
        RJMP    Y_0003
; 13.	   UCSR0A |= (1<<TXC0);                             //delete TXCflag
        SBI     LOW(11),LOW(6)
; 14.	#endif
; 15.	#ifdef _ATMEGA163
; 16.	   UDR=c;
; 17.	   while (!(UCSRA & (1<<TXC)));                     //wait until byte sendt
; 18.	   UCSRA |= (1<<TXC);                               //delete TXCflag
; 19.	#endif
; 20.	#ifdef _ATMEGA104
; 21.	   UDR1=c;
; 22.	   while (!(UCSR1A & (1<<TXC)));                    //wait until byte sendt
; 23.	   UCSR1A |= (1<<TXC);                              //delete TXCflag
; 24.	#endif
; 25.	
; 26.	}
        RET     
;	c               	R16
recchar:
; 27.	
; 28.	char recchar(void)
; 29.	{
Y_0006:
; 30.	#ifdef _ATMEGA32
; 31.	   while(!(UCSRA & (1<<RXC)));                      // Wait for data to come
; 32.	   return UDR;
; 33.	#endif
; 34.	#ifdef _ATMEGA161
; 35.	   while(!(UCSR0A & (1<<RXC0)));                    // Wait for data to come
        IN      R16,LOW(11)
        CPI     R16,LOW(0)
        BRGE    Y_0006
; 36.	   return UDR0;
        IN      R16,LOW(12)
; 37.	#endif
; 38.	#ifdef _ATMEGA163
; 39.	   while(!(UCSRA & (1<<RXC)));                      // Wait for data to come
; 40.	   return UDR;
; 41.	#endif
; 42.	#ifdef _ATMEGA104
; 43.	   while(!(UCSR1A & (1<<RXC)));                     // Wait for data to come
; 44.	   return UDR1;
; 45.	#endif
; 46.	}
        RET     
; 47.	
; 48.	
; 49.	
; 50.	
	;.END