#The7thLiChuangElectricityContest#Ammeter_Summer Training Camp

 1. Introduction to project functions
The 2022 summer training camp practice project is based on the ammeter made by the National Technology N32G430C8L7 microcontroller. On the basis of the original project, a PD fast charging deception chip is added to replace the original 0.91-inch OLED with a 0.96-inch OLED.
Since CH224K is used for the first time, the fast charging function is not realized and can only output with a 5V or 9V protocol (depending on the default output of the charger).
 
2. Project attributes
are from the 2022 Summer Training Camp of LiChuang
 
 3. Open source agreement
GPL 3.0
 
4. The hardware part
quotes the official case of the training camp [Official case of the training camp] USB ammeter-Jialichuang EDA open source hardware platform (oshwhub.com), replaces USBA with a dual Type-C female socket, adds a fast charging chip, supports the PD protocol, and determines the specific protocol by outputting the level of the three fixed IO ports of N32G430C8L7
 
5. Software part The software
part uses the engineering template provided by the official routine, adds the CH224K charging protocol driver, and can directly modify the program to implement the selection of the PD protocol. Its truth table is as follows:
Its related functions are included in the project directory->Lib->CH224K->CH224K.h, and its definition is in CH224K.c in the same directory
 
6. For details
of the BOM list, please refer to the BOM list at the end of this article.
It is recommended to replace the 680uF capacitor in the original project with 47uF
 
7. Competition LOGO verification
 
 8. Demonstrate your project and record it as a video and
upload it. The demonstration video has been uploaded to the attachment