mip4_i2c_xfer
error = mip4_i2c_xfer(ts, cmd, sizeof(cmd), buf, sizeof(buf));
error = mip4_i2c_xfer(ts, cmd, sizeof(cmd),
error = mip4_i2c_xfer(ts, cmd, sizeof(cmd), buf, 2);
error = mip4_i2c_xfer(ts, cmd, sizeof(cmd),
error = mip4_i2c_xfer(ts, cmd, sizeof(cmd), buf, 14);
error = mip4_i2c_xfer(ts, cmd, sizeof(cmd), buf, 7);
error = mip4_i2c_xfer(ts, cmd, sizeof(cmd), ts->buf, 1);
error = mip4_i2c_xfer(ts, cmd, sizeof(cmd), ts->buf, size);