# Firmware

## Expected Behavior

- Run I2C scanner.
- Record detected address.
- Initialize LCD as `16x2`.
- Print a short test message.

## Physical Test Procedure

1. Measure SDA/SCL idle voltage.
2. Run I2C scanner.
3. Adjust contrast.
4. Print test text.
5. Record address and actual behavior.

## Code

TODO: добавить I2C scanner и LCD test code после выбора workflow.

## Actual Result

TODO: записать scanner output и display result.