使用I2C协议（山寨板）的MIDI键盘。 使用了一片74HC165接受信号。用74HC164扫段。 具有力度功能，可以和上位通信更改力度。是相当不错的学习资料！-Using the I2C protocol (cottage board) MIDI keyboard. Received signal using a 74HC165. With 74HC164 sweep segment. With the intensity function, you can change the in

msp430产生扫频信号并识别输入信号频率-msp430 sweep signal and generates the input signal frequency identification

Sweep/Signal Generator LPC2138