I am going to use the STM32 counter to count the output pulses of the encoder and the overflow times of the counter. If the counter overflows, it will count up, and if the counter underflows, it will
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[color=#333333][font=Arial, 宋体]As shown in the figure below, when there is no current flowing through the entire circuit, the boost chip TPS61220 outputs a voltage of 5.5V. When there is current flowi