PBHub v1.1 (STM32F030F4p6) FW Source

  • Hi all,
    I'm willing to add a counter functionality to the PBHub v1.1. It seems possible from the spec sheet of the STM32F030F4p6 used in this device. Also the programming pins are broken out, so reprogramming the chip is not too hard. It whould be very preferrable to add the functionality on the existing FW instead of creating the FW from scratch. In the github of m5stack i was only able to find the FW of the EXT.IO using the same chip, however the PBHub v1.1 is not listed. Any idea's on this one? Also when playing with custom FW, it whould be nice to have the option to reflash the factory firmware.
    Best regards, and thanks,