#includesbit LED = P0^2; unsigned int vT = 0; void main () { LED = 0; // light up TMOD = 0x01; // Timing mode 1 16-bit timing counter TR0 = 1; // Start timer 0 TH0 = 0x3C; // Initial count value 15536 (65536-15536=50000 * 1us = 50ms) TL0 = 0xB0; while(1) { if (TF0 == 1) { TF0 = 0; // Clear the flag vT++; if (vT == 20) // 20 * 50 = 1000ms = 1s { vT = 0; TH0 = 0x3C; // Initial count value 15536 TL0 = 0xB0; LED = !LED; // Switch LED state after overflow } } } }
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