MX6ULL 蜂鸣器实验笔记

hongyeah

蜂鸣器实验笔记

一、硬件原理介绍
[size=10.5000pt]

[size=10.5000pt]我们可以看到S8550为PNP型三极管，当BEEP为低电平时蜂鸣器会叫。[size=10.5000pt]BEEP[size=10.5000pt]控制I[size=10.5000pt]O[size=10.5000pt]为[size=10.5000pt]SNVS_TAMPER1[size=10.5000pt]，[size=10.5000pt]所以我们只需要控制[size=10.5000pt]SNVS_TAMPER1[size=10.5000pt]这个接口的电压就可以控制蜂鸣器。
[size=10.5000pt]
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二、实验程序编写[size=10.5000pt]        [size=10.5000pt]1、初始化S[size=10.5000pt]NVS_TAMPER1[size=10.5000pt]这个I[size=10.5000pt]O[size=10.5000pt]复用为G[size=10.5000pt]PIO[size=10.5000pt]5[size=10.5000pt]_IO01
[size=10.5000pt]        [size=10.5000pt]2、设置S[size=10.5000pt]NVS_TAMPER1[size=10.5000pt]这个I[size=10.5000pt]O[size=10.5000pt]的电气属性。
[size=10.5000pt]        [size=10.5000pt]3、初始化G[size=10.5000pt]PIO
[size=10.5000pt]        [size=10.5000pt]4、控制G[size=10.5000pt]PIO[size=10.5000pt]输出高低电平。
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三、代码分享

Bsp_beep.h
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[size=10.5000pt]#ifndef __BSP_BEEP_H
[size=10.5000pt]#define __BSP_BEEP_H
[size=10.5000pt]#include [size=10.5000pt]”[size=10.5000pt]fsl_common.h[size=10.5000pt]”
[size=10.5000pt]#include [size=10.5000pt]”[size=10.5000pt]fsl_iomuxc.h[size=10.5000pt]”
[size=10.5000pt]#include[size=10.5000pt]”[size=10.5000pt]MXIMX6Y2.h[size=10.5000pt]”
[size=10.5000pt]/*函数说明*/
[size=10.5000pt]Void beep_init(void)
[size=10.5000pt]Void beep_switch(int status)
[size=10.5000pt]
[size=10.5000pt]#endif
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Bsp_beep.c
[size=10.5000pt]#include [size=10.5000pt]“[size=10.5000pt]bsp_beep.h[size=10.5000pt]”
[size=10.5000pt]#include [size=10.5000pt]‘[size=10.5000pt]cc.h[size=10.5000pt]’
[size=10.5000pt]/[size=10.5000pt]’[size=10.5000pt]BEEP[size=10.5000pt]’[size=10.5000pt]初始化/
[size=10.5000pt]Void beep_init(void)
[size=10.5000pt]{
[size=10.5000pt]IOMUXC_SetPinMux(IOMUXC_SNVS_SNVS_TAMPER1_GPIO5_IO01,0);/复用为GPIO5
[size=10.5000pt]IOMUXC_SetPinConfig(IIOMUXC_SNVS_SNVS_TAMPER1_GPIO5_IO01,0X10bo);
[size=10.5000pt]/*GPIO初始化*/
[size=10.5000pt]GPIO5->GDIR |(1<<1);/*设置为输出*/
[size=10.5000pt]GPIO5->DR&=~(1<<1);/*默认关闭*/
[size=10.5000pt]}
[size=10.5000pt]
[size=10.5000pt]/*蜂鸣器控制函数*/
[size=10.5000pt]Void beep_switch(int status)
[size=10.5000pt]{
[size=10.5000pt]If(status == OFF)
[size=10.5000pt]GPIO->DR |=(1<<1)；
[size=10.5000pt]Else if( status ==ON)
[size=10.5000pt]GPIO->DR&=-(1<<1);
[size=10.5000pt]}
[size=10.5000pt]
main.c
#include ‘’bsp_led.h’
#include’bsp_delay.h’
#include’bsp_beep.h’

Int main(void)
{
Clk_enable();/*使能外部时钟*
Led_init();/*初始化LED*/
Beep_init/*初始化蜂鸣器*/
/*设置LED闪烁*/
While(1)
Led_on()
Beep_switch(ON);
Delay(1000);

Led_off()
Beep_switch(OFF);
Delay(1000);

}
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