img_i2c_atomic_op
img_i2c_atomic_op(i2c, CMD_GEN_START, 0x00);
img_i2c_atomic_op(i2c, i2c->at_cur_cmd, i2c->at_cur_data);
img_i2c_atomic_op(i2c, next_cmd, next_data);
img_i2c_atomic_op(i2c, next_cmd, next_data);