micropython/tests/pyb/i2c_accel.py

# use accelerometer to test i2c bus

import pyb
from pyb import I2C

if not hasattr(pyb, "Accel"):
    print("SKIP")
    raise SystemExit

accel_addr = 76

pyb.Accel()  # this will init the MMA for us

i2c = I2C(1, I2C.CONTROLLER, baudrate=400000)

print(i2c.scan())
print(i2c.is_ready(accel_addr))

print(i2c.mem_read(1, accel_addr, 7, timeout=500))
i2c.mem_write(0, accel_addr, 0, timeout=500)

i2c.send(7, addr=accel_addr)
i2c.recv(1, addr=accel_addr)