BTFSC STATUS,C
BSF PORTA,DOUT
BCF PORTA,CLK
CALL T1 ；调用延时子程序T1
DECFSZ COUNT,1 ；COUNT减一为零则结束传送
GOTO SET_LP2
BSF PORTA,CLK
CALL T1
BSF PORTA,LOAD
BSF PORTA,DOUT
RETURN ；子程序返回
START
BSF STATUS,RP0 ；主程序
MOVLW 0X18
MOVWF TRISA
MOVLW 0XFF
MOVWF TRISB
BCF STATUS,RP0
CALL T1
CALL T1
MOVLW 0X12
MOVWF PORTA
BCF PORTA,LOAD
CON_COM
CALL T1 ；初始化PS7219内部RAM
MOVLW 0X0A ；设置亮度为最亮
MOVWF SENT_ADDRESS
MOVLW 0X0F
MOVWF SENT_DATA
CALL SEND ；调用串行通讯子程序
CALL T1
MOVLW 0X0B ；设置扫描界线为8位
MOVWF SENT_ADDRESS
MOVLW 0X07
MOVWF SENT_DATA
CALL SEND ；调用串行通讯子程序
CALL T1
MOVLW 0X09 ；设置每位译码方式为BCD译码
MOVWF SENT_ADDRESS
MOVLW 0XFF
MOVWF SENT_DATA
CALL SEND
CALL T1
MOVLW 0X0C ；设置工作方式为正常
MOVWF SENT_ADDRESS
MOVLW 0X01
MOVWF SENT_DATA
CALL SEND
LED_CON
CALL T1 ；LED显示控制部分
MOVLW 0X01 ；LED1显示为1
MOVWF SENT_ADDRESS
MOVLW 0X01
MOVWF SENT_DATA
CALL SEND
CALL T1
MOVLW 0X02 ；LED2显示为2
MOVWF SENT_ADDRESS
MOVLW 0X02
MOVWF SENT_DATA
CALL SEND
CALL T1
MOVLW 0X03 ；LED3显示为3
MOVWF SENT_ADDRESS
MOVLW 0X03
MOVWF SENT_DATA
CALL SEND
CALL T1
MOVLW 0X04 ；LED4显示为4
MOVWF SENT_ADDRESS
MOVLW 0X04
MOVWF SENT_DATA
CALL SEND
CALL T1
MOVLW 0X05 ；LED5显示为5
MOVWF SENT_ADDRESS
MOVLW 0X05
MOVWF SENT_DATA
CALL SEND
CALL T1
MOVLW 0X06 ；LED6显示为6
MOVWF SENT_ADDRESS
MOVLW 0X06
MOVWF SENT_DATA
CALL SEND
CALL T1
MOVLW 0X07 ；LED7显示为7
MOVWF SENT_ADDRESS
MOVLW 0X07
MOVWF SENT_DATA
CALL SEND
CALL T1
