In this post, I want to share with you my experience in running RTEMS 7.0 on my STM32F4(something) board.

Step1: Building the BSP

You need to obtain the bsp source code:

$ git clone https://gitlab.rtems.org/rtems/tools/rtems-source-builder.git rsb
$ cd rsb/rtems

Then choose an installation prefix (see the official docs). The STM32 is using Arm architecture, so we need to find that in the list of build sets and then: (In my case it’s 7/rtems-arm.bset)

$ ../source-builder/sb-set-builder --prefix=$HOME/arm 7/rtems-arm.bset

Now you should see the success output.

Step2: Building the App

We can use the rtems-examples repo to build a simple blinky app into the board.

$ git clone https://gitlab.rtems.org/rtems/rtos/rtems-examples
$ cd rtems-examples/led/delay

Finally, download and configure waf, according to your target:

$ curl https://waf.io/waf-2.0.19 > waf
$ chmod +x waf
$ git init
$ git submodule add https://gitlab.rtems.org/rtems/tools/rtems_waf.git rtems_waf
$ ./waf configure --prefix=$HOME/arm --rtems-bsps=arm/stm32f4
$ ./waf 

After running waf, you should see the 'build-arm-rtems7-stm32f4' finished successfully message.

Step3: Program into the board

I use CubeProgrammer to program the app into the board. First, we need to convert it to bin:

$ arm-rtems7-objcopy -O binary build/arm-rtems7-stm32f4/delay.exe app.bin

And finally, select the app.bin in the CubeProgrammer and start the app!