Because there are too many chores, I only wrote about the basic functions of detecting and displaying current and voltage. More functions will be developed later when I have time.
The onboard CH340C serial port chip is used to download the programming program and serial communication to the MCU.
Current and voltage detection: Using the INA226 chip with a 0.01R resistor can achieve 4-30V, 0-8A voltage and current detection with current accuracy up to (0.001A)
PD protocol: not developed
QC deception: Based on the two DAC pins of ESP32, a simple verification can achieve QC2.0 QC3.0 deception.
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