Abstract:

STM32F103 chip is adopted as the host to realize multi-channel data acquisition and storage.The multi-channel analog-to-digital conversion chip AD7793 is used for data collection,and the collected data is shown on the LCD screen.The USB host interface is designed based on USB control chip CH376,which control  the data read and write directly into mobile storage devices only by sending and receiving instructions via serial port,thus solving the lack of the micro-controller pin resources.

Key words: STM32F103;AD7793;CH376;serial port instructions