HeltecTM STM32+LoRa Series Frequently Asked Questions

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This page contains the most frequently questions from user. If this page’s detail can’t solve your problem, you can also talk in our forum: community.heltec.cn

 

Can’t Download Firmware

  • Use USB cable.
    • Use a better USB cable, or change a USB socket.
    • Enter the DFU mode correctly.
  • Use ST-LINK.
    • Make sure that the development board is connected to ST-LINK correctly.

Please refer to the following documents:

 

Serial port has no output

  • Use USB-CDC(USB-Virtual Serial Port)
    • USB-CDC is not configured correctly(You can refer to our examples).
  • Use USB-UART
    • Make sure that the development board is connected to USB-UART module correctly.

Please refer to the following documents: