This is a simpler EC example for the ST Nucleo H743ZI development board.
The Nucleo dev boards have lots of developer friendly features, like an in-circuit debugger/programmer/UART-bridge, programmable LEDs, and a button, to name a few.
The built-in debugger can be connected to using a Micro USB cable. It provides three great interfaces to the host. 1. Mass storage interface for drag-drop programming 2. Full ST-Link in-circuit debugger 3. UART bridge for logs/consoles
We will use a few of these interfaces below to program and interact with out Nucleo dev board.
make BOARD=nucleo-h743zi -j
The easiest way to flash the Nucleo board is to Copy-Paste/Drag-Drop the firmware image onto the exposed mass storage drive.
Open a file browser and Copy the file in build/nucleo-h743zi/ec.bin. Now, find the removable storage that the Nucleo device has presented, and Paste the file into the directory.
After the Nucleo finishes programming, you can open the EC console. On GNU/Linux, this is mapped to /dev/ttyACM0.
Install minicom and issue the following command:
minicom -D/dev/ttyACM0
A fun EC feature is that unit tests can be run on-device.
This is made possible by an alternative build rule that generates a test image per unit test. These test images use a unit test specific taskset and console command to trigger them.
To enable an existing unit test, add it to the build.mk's test-list-y variable.
See the main README.md on how to write a new unit test.
To build all unit test images for this board, run the following command:
make BOARD=nucleo-h743zi tests
You can build a specific unit test image by changing tests to test-aes, for the aes unit test.
Copy/paste the build/nucleo-h743zi/${TEST}/${TEST}.bin file to the Nucleo's mass storage drive, where ${TEST} is the name of the unit test, like aes.
minicom -D/dev/ttyACM0
runtest command