STC micro STC8A8K64D4 Series - Using Comparator (Polling Mode)

STC8A8K64D4 Series Manual
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ORL CMPCR1,#30H ; Enable edge interrupt of comparator
; ANL CMPCR1,#NOT 20H ; Disable comparator rising edge interrupt
; ORL CMPCR1,#20H ; Enable comparator rising edge interrupt
; ANL CMPCR1,#NOT 10H ; Disable comparator falling edge interrupt
; ORL CMPCR1,#10H ; Enable comparator falling edge interrupt
ANL CMPCR1,#NOT 08H ;P3.7 is CMP+ input pin
; ORL CMPCR1,#08H ;ADC is CMP+ input pin
; ANL CMPCR1,#NOT 04H ;internal 1.19Vreferrence voltage is CMP- input pin
ORL CMPCR1,#04H ;P3.6 is CMP- input pin
; ANL CMPCR1,#NOT 02H ; Disable comparator output
ORL CMPCR1,#02H ; Enable Comparator output
ORL CMPCR1,#80H ; Enable comparator module
SETB EA
JMP $
END
15.4.2 Using Comparator (Polling Mode)
C language code
// Operating frequency for test is 11.0592MHz
#include "reg51.h"
#include "intrins.h"
#define CMPEXCFG (*(unsigned char volatile xdata *)0xfeae)
sfr P_SW2 = 0xba;
sfr CMPCR1 = 0xe6;
sfr CMPCR2 = 0xe7;
sfr P1M1 = 0x91;
sfr P1M0 = 0x92;
sfr P0M1 = 0x93;
sfr P0M0 = 0x94;
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;
sbit P11 = P1^1;
void main()
{
P0M0 = 0x00;
P0M1 = 0x00;
P1M0 = 0x00;
P1M1 = 0x00;