TouchNetix / AXPB009

MIT License
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AXPB009 - TNx Protocol Bridge

Recommended IDE

This project works with the STM32CubeIDE. It can be downloaded here.

Import Project

Open STM32CubeIDE and create a workspace.

Once cloned to a local repository, the project can be imported to the IDE:

The project should appear in the project explorer window. Make sure all the files are present and that you can build the project.

Build Targets

Once imported, the code can be compiled to target multiple chips in the STM32F0 line of microcontrollers. To change the target:

The files created after compilation (.elf, .hex, .bin) are put into the relevant folder in the top level AXPB009 project folder - if the folder is missing it will create one automatically.

All targets can be built at the same time by clicking 'Build all' from the Build configuration menu. Each target can also be built individually if required.

Pin Mappings

Some of the build targets have slight variations on the pins used for certain functions. Each chip and its pin mappings has been listed below:

Pin Function STM32F042F6 STM32F070CB STM32F072CB
nRESET PB1 PB1 PB1
nIRQ PA0 PA0 PA0
USB_DM PA11 PA11 PA11
USB_DP PA12 PA12 PA12
SWDIO PA13 PA13 PA13
SWCLK PA14 PA14 PA14
COMMS_SELECT PA2 PB2 PB2
SPI_nSS PA4 PA4 PA4
SPI_SCK PA5 PA5 PA5
SPI_MISO PA6 PA6 PA6
SPI_MOSI PA7 PA7 PA7
I2C_SCL PF1 PB6 PB6
I2C_SDA PF0 PB7 PB7
LED_USB PB8 PB8 PB8
LED_AXIOM PA1 PA1 PA1

Creating *.dfu files

If using STM32CubeProgrammer to update a ST chip, then the .elf file generated when the project is built can be used with no modifications.

If updating the firmware using ST's 'DfuSe' application a .dfu file must be created. This can be achieved by using the application 'DFU File Manager', provided by ST.