ADC0832转换程序                

                   CLK     bit P1.6
                   DATA_I  bit P1.4
                   DATA_O  bit P1.5
                   CS      bit P1.2
           org 0000h
           ajmp start
           org 0020h
           
adc0832:                           ;;A/D处理主程序
               CLR   A                           
                    MOV    R7,A                         
                   CLR   CS                         
                   SJMP  adc_wait   ;;判断A/D是否准备好?                    
wait_loop:         JNB   DATA_O,adc_process                 
adc_wait:          SETB  CLK                        
                   NOP                               
                   NOP                               
                   CLR   CLK                         
                   NOP                               
                   NOP                                
                   SJMP  wait_loop                        
adc_process:       CLR   A             ;;A/D处理子程序                       
                    MOV    R6,A                         
pro_loop:          SETB  CLK                         
                   NOP                                
                   NOP                               
                   CLR   CLK                         
                   NOP                                
                   NOP                                
                    MOV    A,R7                         
                   ADD   A,ACC                        
                    MOV    R7,A                         
                    MOV    C,DATA_O                       
                   CLR   A                            
                   RLC   A                            
                   ORL   A,R7                        
                    MOV    R7,A                         
                   INC   R6                           
                   CJNE  R6,#08H,pro_loop                
                   SETB  CS                         
                   RET                                
;==========================================================================
;主程序
start:         
                   LCALL adc0832                       
                    MOV    P0,R7                        
                   SJMP  start                        
                   END