if(i & 0x01) k |= 0x40; //A
if(i & 0x20) k |= 0x80; //F
*p = (*p & T_LCD_mask[n]) | (k>>2*n);
}
/********************Display time **************************/
void LoadRTC(void)
{
LCD_load(1,hour/10);
LCD_load(2,hour%10);
LCD_load(3,minute/10);
LCD_load(4,minute%10);
LCD_load(5,second/10);
LCD_load(6,second%10);
}
Assembly code
;STC8 series of microcontrollers are used to test segment LCD driven by I/O directly (6 8-word LCDs, 1/4 Dutys, 1/3 bias).
;Time (hours, minutes and seconds) is displayed after power-on.
;************************************************************
P0M1 DATA 0x93
P0M0 DATA 0x94
P1M1 DATA 0x91
P1M0 DATA 0x92
P2M1 DATA 0x95
P2M0 DATA 0x96
P3M1 DATA 0xB1
P3M0 DATA 0xB2
P4M1 DATA 0xB3
P4M0 DATA 0xB4
P5M1 DATA 0xC9
P5M0 DATA 0xC
P6M1 DATA 0xCB
P6M0 DATA 0xCC
P7M1 DATA 0xE1
P7M0 DATA 0xE2
AUXR DATA 0x8E
INT_CLKO DATA 0x8F
IE2 DATA 0xAF
P4 DATA 0xC0
T2H DATA 0xD6
T2L DATA 0xD7
;************************************************************
DIS_BLACK EQU 010H
DIS_ EQU 011H
DIS_A EQU 00AH
DIS_B EQU 00BH
DIS_C EQU 00CH
DIS_D EQU 00DH
DIS_E EQU 00EH
DIS_F EQU 00FH
B_2ms BIT 20H.0 ;2ms signal
B_Second BIT 20H.1 ;second signal
cnt_500ms DATA 30H
second DATA 31H
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