STC micro STC8A8K64D4 Series - UART4 Interrupt

STC8A8K64D4 Series Manual
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MOV IE2,#ES3 ;Enable UART3 interrupt
SETB EA
MOV S3BUF,#5AH ;Send test data
JMP $
END
11.5.16 UART4 Interrupt
C language code
//Operating frequency for test is 11.0592MHz
#include "reg51.h"
#include "intrins.h"
sfr T2L = 0xd7;
sfr T2H = 0xd6;
sfr AUXR = 0x8e;
sfr S4CON = 0x84;
sfr S4BUF = 0x85;
sfr IE2 = 0xaf;
#define ES4 0x10
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 P12 = P1^2;
sbit P13 = P1^3;
void UART4_Isr() interrupt 18
{
if (S4CON & 0x02)
{
S4CON &= ~0x02; //Clear interrupt flag
P12 = !P12; //Test port
}
if (S4CON & 0x01)
{
S4CON &= ~0x01; //Clear interrupt flag
P13 = !P13; //Test port
}
}
void main()
{
P0M0 = 0x00;
P0M1 = 0x00;
P1M0 = 0x00;