RP2040 with TMF8805 using MicroPython

This code origins from the course Embedded Systems at FH Münster – University of Applied Sciences. There a RP2040 with a TMF8805 programmed with MicroPython was used to measure the water level in a pipe with a swimmer.

Development

To setup your local development environment install Visual Studio Code and the MicroPico extension. After that connect the Raspberry Pi Pico using a USB cabel and run your code using MicroPico. To enforce a global style please install the development requirements and after that the pre-commit hook using pre-commit install.

Setup & upload project to Pico

• Download the latest firmware from https://micropython.org/download/RPI_PICO/ and flash the RP2040 via UF2 bootloader
• Follow the steps above to setup a local development environment
• Open the command pallete (CTRL + SHIFT + P)
• Search for MicroPico: Configure project and execute it
• Search for MicroPico: Upload project to Pico and execute it
• Switch to the main.py and run it!

TMF8805

To create an instance of the TMF8805 class you can use the following code snippet:

tmf8805: TMF8805 = TMF8805(
    enable=7,
    sda=4,
    scl=5,
    i2c_frequency=100000,
    debug=True
)
tmf8805.initialize()
distance: float = tmf8805.get_measurement()
print(f"Measured distance: {distance}mm")

or copy the contents from main.py