tim_com2.asm

串口通信 频率测量 EEPROM读写程序

             out SPDR , r20 
             ldi r17,0b00001000  ; display byte PC.3 
             out PORTC,r17       
             rcall delay
             rcall turn_off
             ;-------------------display PC.3 second byte of time value
              rcall b4_d0   
              ret
            ;-------------------- ; PC.4 display "0"  
 time_210: cpi r26,3
             brne time_240 
            ;----------------------
             ldi  r20,$5b                 
             out SPDR , r20 
             ldi r17,0b0000100  ; display byte PC.2 
             out PORTC,r17       
             rcall delay
             rcall turn_off
            ; ---------------------display PC.2 first byte of time value          
             ldi r20 ,$06       
             out SPDR , r20 
             ldi r17,0b00001000  ; display byte PC.3 
             out PORTC,r17       
             rcall delay
             rcall turn_off
             ;-------------------display PC.3 second byte of time value
              rcall b4_d0   
              ret
            ;-------------------- ; PC.4 display "0" 
time_240: cpi r26,4
             brne time_270 
            ;----------------------
             ldi  r20,$5b                 
             out SPDR , r20 
             ldi r17,0b0000100  ; display byte PC.2 
             out PORTC,r17       
             rcall delay
             rcall turn_off
            ; ---------------------display PC.2 first byte of time value          
             ldi r20 ,$66       
             out SPDR , r20 
             ldi r17,0b00001000  ; display byte PC.3 
             out PORTC,r17       
             rcall delay
             rcall turn_off
             ;-------------------display PC.3 second byte of time value
              rcall b4_d0   
              ret
            ;-------------------- ; PC.4 display "0"  
time_270: cpi r26,5
             brne time_300 
            ;----------------------
             ldi  r20,$5b                 
             out SPDR , r20 
             ldi r17,0b0000100  ; display byte PC.2 
             out PORTC,r17       
             rcall delay
             rcall turn_off
            ; --------------------display PC.2 first byte of time value          
             ldi r20 ,$07       
             out SPDR , r20 
             ldi r17,0b00001000  ; display byte PC.3 
             out PORTC,r17       
             rcall delay
             rcall turn_off
             ;-------------------display PC.3 second byte of time value
              rcall b4_d0   
              ret
            ;-------------------- ; PC.4 display "0" 
time_300: cpi r26,6
             brne time_330 
            ;----------------------
             ldi  r20,$4f                
             out SPDR , r20 
             ldi r17,0b0000100  ; display byte PC.2 
             out PORTC,r17       
             rcall delay
             rcall turn_off
            ; --------------------display PC.2 first byte of time value          
             ldi r20 ,$3f       
             out SPDR , r20 
             ldi r17,0b00001000  ; display byte PC.3 
             out PORTC,r17       
             rcall delay
             rcall turn_off
             ;-------------------display PC.3 second byte of time value
              rcall b4_d0   
              ret
            ;-------------------- ; PC.4 display "0" 
time_330: cpi r26,7
             brne time_360 
            ;----------------------
             ldi  r20,$4f                
             out SPDR , r20 
             ldi r17,0b0000100  ; display byte PC.2 
             out PORTC,r17       
             rcall delay
             rcall turn_off
            ; --------------------display PC.2 first byte of time value          
             ldi r20 ,$7d       
             out SPDR , r20 
             ldi r17,0b00001000  ; display byte PC.3 
             out PORTC,r17       
             rcall delay
             rcall turn_off
             ;-------------------display PC.3 second byte of time value
              rcall b4_d0   
              ret
            ;-------------------- ; PC.4 display "0 
time_360: cpi r26,8
             brne time_390 
            ;----------------------
             ldi  r20,$4f                
             out SPDR , r20 
             ldi r17,0b0000100  ; display byte PC.2 
             out PORTC,r17       
             rcall delay
             rcall turn_off
            ; --------------------display PC.2 first byte of time value          
             ldi r20 ,$7d       
             out SPDR , r20 
             ldi r17,0b00001000  ; display byte PC.3 
             out PORTC,r17       
             rcall delay
             rcall turn_off
             ;-------------------display PC.3 second byte of time value
              rcall b4_d0   
              ret
            ;-------------------- ; PC.4 display "0  
time_390: cpi r26,9
             brne time_420 
            ;----------------------
             ldi  r20,$4f                
             out SPDR , r20 
             ldi r17,0b0000100  ; display byte PC.2 
             out PORTC,r17       
             rcall delay
             rcall turn_off
            ; --------------------display PC.2 first byte of time value          
             ldi r20 ,$6f       
             out SPDR , r20 
             ldi r17,0b00001000  ; display byte PC.3 
             out PORTC,r17       
             rcall delay
             rcall turn_off
             ;-------------------display PC.3 second byte of time value
              rcall b4_d0   
              ret
            ;-------------------- ; PC.4 display "0   
time_420: cpi r26,10
             brne time_450 
            ;----------------------
             ldi  r20,$66                
             out SPDR , r20 
             ldi r17,0b0000100  ; display byte PC.2 
             out PORTC,r17       
             rcall delay
             rcall turn_off
            ; --------------------display PC.2 first byte of time value          
             ldi r20 ,$5b       
             out SPDR , r20 
             ldi r17,0b00001000  ; display byte PC.3 
             out PORTC,r17       
             rcall delay
             rcall turn_off
             ;-------------------display PC.3 second byte of time value
              rcall b4_d0   
              ret
            ;-------------------- ; PC.4 display "0 
time_450: cpi r26,11
             brne time_480 
            ;----------------------
             ldi  r20,$66                
             out SPDR , r20 
             ldi r17,0b0000100  ; display byte PC.2 
             out PORTC,r17       
             rcall delay
             rcall turn_off
            ; --------------------display PC.2 first byte of time value          
             ldi r20 ,$6d       
             out SPDR , r20 
             ldi r17,0b00001000  ; display byte PC.3 
             out PORTC,r17       
             rcall delay
             rcall turn_off
             ;-------------------display PC.3 second byte of time value
              rcall b4_d0   
              ret
            ;-------------------- ; PC.4 display "0  
time_480:   nop
            ;----------------------
             ldi  r20,$66                
             out SPDR , r20 
             ldi r17,0b0000100  ; display byte PC.2 
             out PORTC,r17       
             rcall delay
             rcall turn_off
            ; --------------------display PC.2 first byte of time value          
             ldi r20 ,$7f       
             out SPDR , r20 
             ldi r17,0b00001000  ; display byte PC.3 
             out PORTC,r17       
             rcall delay
             rcall turn_off
             ;-------------------display PC.3 second byte of time value
              rcall b4_d0   
              ret
            ;-------------------- ; PC.4 display "0                                                                      
    b4_d0:  ldi  r20,$3f        
             out SPDR , r20 
             ldi r17,0b00010000        
             out PORTC,r17 
             rcall delay
             rcall turn_off                                      
             ret 
 turn_off: ser r16
           out DDRC,r16
           ldi r17,0b0000000
           out PORTC,r17  
           ret        
change_disp: ret