Use hk32f030m to make a smart voltage and ammeter hkf030m chip. In this project, it is mainly used for io port expansion. It can be expanded to ordinary io port, adc acquisition port, iic port, and pwm interface master control. Another tw03 WiFi module worth 7.4 yuan is used. For driving the screen and data transmission, the advantages of this wifi module are strong performance, large memory, and many functions. The disadvantage is that it has less IO and does not support ADC collection. Use a serial port to connect the two to exchange data 1 and detect the fast charging function~~ ~~ The following functions may be developed later: 2 PD deception output 3 PD smart soldering iron
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