#The 7th Lichuang Electric Competition#Current and voltage table

 *1. Project function introduction
Based on the power meter made of N32G430C8L7+INA199, you can view the voltage and current values ​​currently passing through the USB
 
*2. Project attributes
are not original, reproduce the official case of the training camp
 
* 3. Open source agreement
GPL3.0
 
*4. The hardware part
uses Jiali Chuang EDA. The current is detected by the INA199 chip, and the voltage is detected by two resistors in series between VBUS and GND. The value is converted by the MCU and displayed by an LCD. Note that since the working voltage of the N32G430C8L7 used is 3.3V, a voltage conversion circuit is required to ensure that there is a stable voltage for the microcontroller to work properly. Since I only want to test a small voltage and current, I use an LDO for voltage conversion. If you need to measure fast charging, you need to change the voltage conversion circuit to ensure that the circuit can work properly.
 
*5. The software part
uses the official case program of the training camp, without any changes... Keil5 IDE is used for compilation and burning. It is necessary to add the National Technology N32 chip package in keil. I use ST-Link for burning.
 
*6. BOM list
 
*7. Competition LOGO verification
 
* 8. Demonstrate your project and record it as a video and upload it