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How to create a USB CDC device. (I'm using stm32f103c8 black pill board) and I want to read the data through USB in my raspberry pi as a serial port.
I am using a black pill to read RFID-rf522 to read a tag (SPI) and send it to raspberry pi through a USB (using DM and DP pins).
Quick responses are welcomed.
You can use the one provided by generating it with STMCubeMx. This is going beyond arduino though. But it is highly feasible.
Serial.begin(115200);or maybeUSBSerial.begin(115200);will do it. Read the manual for the STM32F1 core on the website for that core.