Mini HIL Framework

Context

Professional HIL benches are expensive. This project shows the same ideas on hardware that costs less than 100 €.

Architecture

A Raspberry Pi acts as the test controller: it flashes the STM32, drives its inputs through GPIO and reads its outputs over UART. Tests are plain pytest files.

def test_led_blinks_after_boot(dut):
    dut.reset()
    assert dut.wait_for_uart("boot ok", timeout=2.0)
    assert dut.gpio("LED").toggles(within=1.0)

Results

• Runs in GitHub Actions on a self-hosted runner.
• Documented so others can build the same bench.