STC micro STC8A8K64D4 Series - Page 207

STC8A8K64D4 Series Manual
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minute DATA 32H
hour DATA 33H
scan_index DATA 34H
LCD_buff DATA 40H ;40H~47H
;************************************************************
ORG 0000H
LJMP F_Main
ORG 000BH
LJMP F_Timer0_Interrupt
;************************************************************
ORG 0100H
F_Main:
CLR A
MOV P3M1, A ;Set as a quasi-bidirectional port
MOV P3M0, A
MOV P5M1, A ;Set as a quasi-bidirectional port
MOV P5M0, A
MOV P1M1, #0 ; segments are set as push-pull output mode
MOV P1M0, #0ffh
ANL P2M1, #NOT 0f0h ; segments are set as push-pull output mode
ORL P2M0, #0f0h
ORL P2M1, #00fH ; All COM outputs are high impedance, and COM’s voltage is the midpoint
ANL P2M0, #0f0H
MOV SP, #0D0H
MOV PSW, #0
USING 0 ;Select bank0 R0 ~ R7
;************************************************************
MOV R2, #8
MOV R0, #LCD_buff
L_ClearLcdRam:
MOV @R0, #0
INC R0
DJNZ R2, L_ClearLcdRam
LCALL F_Timer0_init
SETB EA
; ORL LCD_buff, #020H ;Display hour-minute division interval:
; ORL LCD_buff, #002H ;Display minute-second division interval:
MOV hour, #12
MOV minute, #00
MOV second, #00
LCALL F_LoadRTC ;Display time
;************************************************************
L_Main_Loop:
JNB B_2ms, L_Main_Loop ;2ms beat
CLR B_2ms
INC cnt_500ms
MOV A, cnt_500ms
CJNE A, #250, L_Main_Loop
;reach to 500ms
MOV cnt_500ms, #0;