CW32 Digital Voltage and Current Meter

This is a voltage and current meter made using a CW32F003E4 microcontroller. The microcontroller has a main frequency of 48MHz and a very stable 12-bit ADC peripheral, providing the possibility of making a high-precision current and voltage meter. Therefore, two UI interfaces were created: one for current, voltage, and power, and the other for voltage and current curve plotting. The current sampling resistor is 300mΩ, and with the addition of a heatsink, the range can reach 3A. The data processing method is to calculate a linear regression equation between the sampled data and the measured value. The accuracy can reach 0.001A for current ranging from 0-600mA, and the voltage resistor divider ratio is 1:23, with an accuracy of 0.01V.
Detailed Lark documentation is available: //**
 ​ ⁤‎​‍‍‎‎‎‎⁡⁢‎​⁢‍​⁣‎‎‎⁣⁢⁡⁡⁣⁡⁤​⁤⁣⁢​⁢⁢⁡⁣‎⁤‎​Youbi3262494347 CW32 Digital Voltmeter and Ammeter Training Assignment - Lark Cloud Document (feishu.cn)
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