tc0out.asm

来自「范例程序 SONiX」· 汇编 代码 · 共 87 行

chip	sn8p2758

.data

.code

	org	00h
	jmp	main
	

	org	10h

//============================================================================
//	timer TC0 --> tc0out(buzzer)
//============================================================================
//Setup TC0OUT output from TC0 to TC0OUT (P5.4). The external high-speed clock is 4MHz. The
//TC0OUT frequency is 0.5KHz. Because the TC0OUT signal is divided by 2, set the TC0 clock to 1KHz. The
//TC0 clock source is from external oscillator clock. TC0 rate is Fcpu/4. The TC0RATE2~TC0RATE1 = 110.
//TC0C = TC0R = 131.
main:

	b0bclr	ftc0enb
						
	mov	a,#60h		// Fcpu/4		
	b0mov	tc0m,a				
											
	mov	a,#131					
	b0mov	tc0c,a	
	b0mov	tc0r,a	
	
	b0bset	ftc0out		// Enable tc0out function
	b0bset	faload0		// enable auto reload		
					
	b0bset	ftc0enb		// Enable T0 timer
main10:

//==================================================================
//	
//	User code 
//
//==================================================================
									
	jmp	main10