How to recover a FiPy which is half-bricked ^^!

[Vasco Ferraz]

Hi,

I successfully burned a LED-RGB blinking code using the Arduino IDE by connecting P2 into GND but now I cannot connect the FiPy into Atom.

Keep in mind the following:

• I do have a Pysense board.

• I still can flash the ESP32 using the Arduino IDE by doing the P2-GND shunt.

• When I shunt P2-GND the LED turns on emitting a random colour.

• I can see that the serial port is available.

• I can use the DFU software to flash the firmware into the Pysense.

• If I shunt P12-3V3 I cannot enter into safe boot. Also, the RGB LED is not flashing orange or any other colour.

• Using Pycom upgrade I get the following error: "Failed to connect to ESP32: Timed out waiting for packet header"

• Using Pycom upgrade while shunting P2-GND:

So, what am I missing to restore the FiPy?

Thank you.

[robert-hh]

@Vasco-Ferraz When using the pycom updater: After connecting P2-> GND, push reset to place the device into bootloader mode. Then the updater should be able to connect the board.
Chose to upload from a appropriate tar package, which you can download here. https://software.pycom.io/downloads/FiPy.html
Even if these are not the most recent packages, they make a good starting point.

You may also use the command line update tool updater.py, which you can find here: https://github.com/pycom/pycom-micropython-sigfox/tree/Dev/esp32/tools/fw_updater
Use python updater.py --help
for instructions. Erasing the flash before upload is recommended.
updater.py is a front-end to esptool.py, but can deal die Pycom firmware packages.
Note: When you get the help page from updater.py, it will point at a page https://docs.pycom.io/advance/cli/, which talks about a tool called pycom-fwtool-cli. That should be essentially the same as updater.py.

[Vasco Ferraz]

FiPy is alive :D

Thank you so much!