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📄 buzzer.s

📁 该驱动程序是针对2410开发板的LED灯的驱动
💻 S
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/* * Name : buzzer.s * Disc : buzzer on and off. * 2007-08-02 by Qingmin Liu */@ register address.equ WTCON,	0x53000000.equ GPBCON,	0x56000010@ offset value.equ oGPBDAT,	0x04.equ oGPBUP,	0x08@ macro defination.macro BUZZER        mov r1, #0x1        str r1, [r0, #oGPBDAT]        bl delay	mov r1, #0x0	str r1, [r0, #oGPBDAT]	bl delay.endm.text.global _start_start:	@ disable watch dog timer	mov r0, #WTCON	mov r1, #0x0	str r1, [r0]	@ setup the GPBCON	ldr r0, =GPBCON	mov r1, #0x01	str r1, [r0]1:	BUZZER	b 1bstop:	b stop@@ SUB Routine@delay:	mov r2, #0x300001:	subs r2, r2, #0x1	bne 1b	mov pc, lr.end

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