Following instructions specifies how to flash the firmware onto WisTrio board from a Linux host machine:

  1. Install stm32flash tool
$ git clone stm32flash-code
$ cd stm32flash-code
$ make
$ sudo make install
  1. Download the firmware from Git repo.

  2. Trigger ROM bootloader
    • Connect 96Boards WisTrio to your Linux PC using, USB-Micro to USB-A cable.
    • ROM bootloader can be triggered by the following pattern:
      • Connect BOOT0 to VDD (link pin 1 and 2 on J12)
      • Press and release the RST button
  3. Flash the firmware onto WisTrio
    $ sudo stm32flash -b 115200 -w ./Firmware/RAK811_HF_trackerboard_V2.0.0.6.bin -v -g 0x08000000 /dev/ttyUSB0

Note: /dev/ttyUSB0 is the serial port exposed by WisTrio

  1. Once the firmware is flashed, unlink J12 and connect to the WisTrio serial port using minicom
    $ sudo minicom -D /dev/ttyUSB0

    Note: For getting the AT command response, Local echo needs to be turned ON. On minicom, this can be achieved by Ctrl + A, E. After entering the AT commands, press Ctrl + J.