Motor Shield Reprogramming

Create and flash new firmware for the WeMos D1 Mini Motor Shield.

We have pretty good information about the motor shield:

• The H-bridge is TB6612.

• The microcontroller is STM32F030.

• We have a schematic: https://www.wemos.cc/sites/default/files/2016-09/mini_motor.pdf

• We have the Arduino library for talking to it: https://github.com/wemos/WEMOS_Motor_Shield_Arduino_Library

• And, last but not least, we finally have the source code of the original firmware: https://github.com/wemos/Motor_Shield_Firmware

The shield has a serial interface for programming broken out, and that chip is supposed to have a bootloader built-in, so hopefully we will be able to just use stm32flash and an USB2TTL adapter to program it.

There is a nice dev environment template for this family of microcontrollers: https://github.com/szczys/stm32f0-discovery-basic-template

Logs

• 2017-11-08 - Multiple I²C Addresses

• 2017-04-21 - We Have a Fixed Firmware!

• 2017-04-21 - Reprogramming Without Soldering

• 2016-11-22 - SWD Programming Continued

• 2016-11-22 - SWD Programming

• 2016-11-21 - Serial Programming