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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.

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  • It depends on what the core provides. If it's like others, then Serial.begin(115200); or maybe USBSerial.begin(115200); will do it. Read the manual for the STM32F1 core on the website for that core. – Majenko♦ Feb 23 '20 at 20:27
  • Could it be that you might be better off just to use the STMicro code for what you are doing? – st2000 Feb 23 '20 at 20:30
  • if you use the core by STM select USB support in Tools menu – Juraj Feb 23 '20 at 20:38
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You can use the one provided by generating it with STMCubeMx. This is going beyond arduino though. But it is highly feasible.

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