This is a MicroPython driver for the M5 Ultrasonic Distance Unit I2C (RCWL-9620).
The only feature is to read the distance, which is returned in milimetres. Note that the maximum read distance of the sensor is 4500 mm, and so a reading of this maximum value can be assumed to be incorrect.
Using mip via mpremote:
mpremote mip install github:HowManyOliversAreThere/micropython-i2c-ultrasonicSee the examples folder for examples for MicroPython versions 1.11 and 1.19.