readWord method
Reads a word from the I2C device with the address
and the bit order
].
Some I2C devices can directly be written without an explicit register. The bit order depends on the I2C device.
Implementation
int readWord(int address, [BitOrder order = BitOrder.msbLast]) {
var data = <I2Cmsg>[];
data.add(I2Cmsg(address, [I2CmsgFlags.i2c_m_rd], 2));
var result = transfer(data);
try {
var ptr = result._messages[0].buf;
var value = (ptr[(order == BitOrder.msbLast ? 0 : 1)] & 0xff) |
(ptr[(order == BitOrder.msbLast ? 1 : 0)] & 0xff) << 8;
return value;
} finally {
result.dispose();
}
}