I2C_OPMASK_WRITE
#define I2C_OP_WRITE_P(x) (((int)(x) & I2C_OPMASK_WRITE) != 0)
I2C_OP_WRITE = I2C_OPMASK_WRITE,
I2C_OP_WRITE_WITH_STOP = I2C_OPMASK_WRITE | I2C_OPMASK_STOP,
I2C_OP_WRITE_BLOCK = I2C_OPMASK_BLKMODE | I2C_OPMASK_WRITE |