def test_smbus_io():
bus = MockSMBus(1)
bus.write_i2c_block_data(0x00, 0x00, [0xff, 0x00, 0xff])
assert bus.read_i2c_block_data(0x00, 0x00, 3) == [0xff, 0x00, 0xff]
def write_i2c_block_data(self, i2c_address, register, values):
# Prevent the reset bit from being written
# simulating an immediate soft reset success
if register == 0x09:
values[0] &= ~0b01000000
MockSMBus.write_i2c_block_data(self, i2c_address, register, values)