首先确定:共8脚,有点的那端为1脚,逆时钟方向。模数共地。
接法:1脚接接信号1,0~3.3V;2脚接信号2,0~3.3V;3脚接信号4,0~3.3V;4脚接地;5、6脚接ARM的IO脚,0~3.3V;7脚接输出;8脚接3.3V。
现象:1脚平均电平1.9V,2脚平均电压2V,3脚平均电压2.7V, 7脚平均电压1.6V。5、6脚控制无效。
请问是什么问题,怎样解决?
谢谢
This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.