Data commit

Task/Sleep/8051-Assembly/sleep.8051

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+ORG RESET
+	jmp main
+ORG TIMER0
+	; timer interrupt only used to wake the processor
+	clr tr0
+	reti
+
+main:
+	setb ea		; enable interrupts
+	setb et0	; enable timer0 interrupt
+	mov tl0, #0	; start timer counter at zero
+	mov th0, #0	; these two values dictate the length of sleep
+
+	mov a, pcon	; copy power control register
+	setb a.0	; set idl bit
+	setb tr0	; start timer
+	; sleeping...
+	mov pcon, a	; move a back into pcon (processor sleeps after this instruction finishes)
+
+	; when the timer overflows and the timer interrupt returns, execution will resume at this spot
+
+	; Awake!
+	jmp $