display.asm

串口通信 频率测量 EEPROM读写程序

 display_0:ldi r21,$3f            
           out SPDR , r21 
           ret
 display_1:ldi r21,$06
           out SPDR , r21 
           ret
 display_2:ldi r21,$5b
           out SPDR , r21 
           ret 
 display_3:ldi r21,$4f
           out SPDR , r21 
           ret
 display_4:ldi r21,$66
           out SPDR , r21 
           ret
 display_5:ldi r21,$6d
           out SPDR , r21 
           ret
 display_6:ldi r21,$7d
           out SPDR , r21 
           ret
 display_7:ldi r21,$07
           out SPDR , r21 
           ret
 display_8:ldi r21,$7f
           out SPDR , r21 
           ret
 display_9:ldi r21,$6f
           out SPDR , r21 
           ret
 turn_off: ser r16
           out DDRC,r16
           ldi r17,0b0000000
           out PORTC,r17  
           ret
dispbyte_0:ldi r17,0b00000001
           out PORTC,r17 
           ret
dispbyte_1:ldi r17,0b00000010
           out PORTC,r17 
           ret
dispbyte_2:ldi r17,0b00000100
           out PORTC,r17 
           ret
dispbyte_3:ldi r17,0b00001000
           out PORTC,r17 
           ret
dispbyte_4:ldi r17,0b00010000
           out PORTC,r17 
           ret
trans_wait:sbis SPSR,7
           rjmp wait             
           ret