read_register.py

# Read length data from a register, return the data
def read_register(register, length):
    # To read a register you send reg & 0x80, and then read it back
    # If you have blocking off the read will return none if it's too soon after
    send_data = [0, register, 0x80, length, 0, 0, 0]
    what = _dev.write(send_data)
    ret = _dev.read(len(send_data) + length)
    return ret[4:4+length] # Data comes in at the 4th byte