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TIVA LAUTH 板PWM脚与PD0和PD1通过电阻相连的问题的回复



看一下TIVA C LAUNCHPAD TM4C123GXL的原理图,PD0和PB6通过0欧电阻(R9)相连,PD1和PB7通过0欧电阻(R10)相连

所以PD0 PD1有信号。

单独调试的话把电阻摘掉就行了。

 

这样设计可以验证一些功能,例如一个IO输出高电平,另外一个作为输入就能采集到电平值;或者输入配置为GPIO中断,响应边沿变化并进入中断服务程序等。