STC micro STC8A8K64D4 Series - Page 259

STC8A8K64D4 Series Manual
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SCON = 0x50;
T2L = 0xe8; //65536-11059200/115200/4=0FFE8H
T2H = 0xff;
AUXR = 0x15; //Start timer
ES = 1; //Enable UART1 interrupt
EA = 1;
SBUF = 0x5a; // Send test data
while (1);
}
Assembly code
;Operating frequency for test is 11.0592MHz
T2L DATA 0D7H
T2H DATA 0D6H
AUXR DATA 8EH
P0M1 DATA 093H
P0M0 DATA 094H
P1M1 DATA 091H
P1M0 DATA 092H
P2M1 DATA 095H
P2M0 DATA 096H
P3M1 DATA 0B1H
P3M0 DATA 0B2H
P4M1 DATA 0B3H
P4M0 DATA 0B4H
P5M1 DATA 0C9H
P5M0 DATA 0CAH
ORG 0000H
LJMP MAIN
ORG 0023H
LJMP UART1ISR
ORG 0100H
UART1ISR:
JNB TI,CHECKRI
CLR TI ;Clear interrupt flag
CPL P1.0 ;Test port
CHECKRI:
JNB RI,ISREXIT
CLR RI ;Clear interrupt flag
CPL P1.1 ;Test port
ISREXIT:
RETI
MAIN:
MOV SP, #5FH
MOV P0M0, #00H
MOV P0M1, #00H
MOV P1M0, #00H
MOV P1M1, #00H
MOV P2M0, #00H
MOV P2M1, #00H
MOV P3M0, #00H
MOV P3M1, #00H
MOV P4M0, #00H
MOV P4M1, #00H