EFeru/hoverboard-firmware-hack-FOC
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Updated Compiling and flashing the firmware (markdown)

Candas1
2022-01-02 18:30:49 +01:00
parent 6cbcc34c6d
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Compiling-and-flashing-the-firmware.md

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Right to the STM32/GD32 chip, there is a debugging header with GND, 3V3, SWDIO and SWCLK. Connect GND, SWDIO and SWCLK to your SWD programmer, like the ST-Link found on many STM devboards.<br>
In case you connected the pins and you get connection errors, make sure your ST-Link dongle pins are real, by sliding the plastic cover and checking on the ST-Link board itself. An example can be seen [here](https://youtu.be/XWh8yJ_p0HA?t=60).
If you have never flashed your board before, the MCU is probably locked. To unlock the flash, check-out the wiki page [How to Unlock MCU flash](https://github.com/EmanuelFeru/hoverboard-firmware-hack-FOC/wiki/How-to-Unlock-MCU-flash).
Do not power the mainboard from the 3.3V of your programmer! This has already killed multiple mainboards.
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### Troubleshooting
If you cannot flash the firmware:
- If the LED on the ST-Link is blinking, the driver installation probably didn't go well
- Make sure you properly soldered the headers/wires, clean contact is mandatory
- Make sure your ST-Link dongle pins are real, by sliding the plastic cover and checking on the ST-Link board itself. An example can be seen [here](https://youtu.be/XWh8yJ_p0HA?t=60)
- Make sure you properly [unlocked](https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/How-to-Unlock-MCU-Flash) the chip
- Make sure you don't have an already open connection to the chip in another software (st-link utility, ...)
- Make sure you properly soldered the headers/wires, clean contact is mandatory
- Also keep in mind the debugging header pin-out can differ on some of the mainboards
- In case you connected the pins and you get connection errors, make sure your ST-Link dongle pins are real, by sliding the plastic cover and checking on the ST-Link board itself. An example can be seen [here](https://youtu.be/XWh8yJ_p0HA?t=60)