What can you do with a cheap Linux machine with limited flash and only a single free GPIO line? Probably not much, but sometimes, just getting root to prove you can is the main goal of a project.

MicroPython also provides a set of MicroPython-specific modules to access hardware-specific functionality and peripherals such as GPIO, Timers, ADC, DAC, PWM, SPI, I2C, CAN, Bluetooth, and USB. See ...

If no value is provided, the port will read the value from the GPIO register and return for the current pin. If a value is provided, the port will write the value to the GPIO register. Valid pin range ...