微處理器 - Lattice GAL22V10 - C/C++ - Timer2


參考資訊：
https://www.stcmicro.com/datasheet/STC15F204EA-cn.pdf
https://www.stcmicro.com/datasheet/STC15F2K60S2-en.pdf

AUXR


Interrupt


IE2


main.c 

#include <mcs51/8051.h>

__sfr __at(0x8E) AUXR;
__sfr __at(0xAF) IE2;
__sfr __at(0xD6) T2H;
__sfr __at(0xD7) T2L;

#define LED P1_2

void t2_isr(void) __interrupt 12
{
    static int cnt = 0;

    cnt += 1;
    if (cnt > 255) {
        cnt = 0;
        LED ^= 1;
    }
}
 
int main(void)
{
    AUXR = 0x04;
    T2H = 0x00;
    T2L = 0x00;
    IE2 = 0x04;
    AUXR |= 0x10;
    EA = 1;

    LED = 1;
    while (1) {
    }
 
    return 0;
}

完成