STC micro STC8A8K64D4 Series - Comparator Interrupt

STC8A8K64D4 Series Manual
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LJMP SPIISR
ORG 0100H
SPIISR:
MOV SPSTAT,#0C0H ;Clear interrupt flag
CPL P1.0 ;Test port
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
MOV P5M0, #00H
MOV P5M1, #00H
MOV SPCTL,#50H ;Enable SPI master mode
MOV SPSTAT,#0C0H ;Clear interrupt flag
MOV IE2,#ESPI ;Enable SPI interrupt
SETB EA
MOV SPDAT,#5AH ;Send test data
JMP $
END
11.5.19 Comparator Interrupt
C language code
//Operating frequency for test is 11.0592MHz
#include "reg51.h"
#include "intrins.h"
sfr CMPCR1 = 0xe6;
sfr CMPCR2 = 0xe7;
sfr P0M1 = 0x93;
sfr P0M0 = 0x94;
sfr P1M1 = 0x91;
sfr P1M0 = 0x92;
sfr P2M1 = 0x95;
sfr P2M0 = 0x96;
sfr P3M1 = 0xb1;
sfr P3M0 = 0xb2;
sfr P4M1 = 0xb3;
sfr P4M0 = 0xb4;
sfr P5M1 = 0xc9;
sfr P5M0 = 0xca;
sbit P10 = P1^0;
void CMP_Isr() interrupt 21
{
CMPCR1 &= ~0x40; //clear interrupt flag