SCD30_SERDEV_RX_HEADER_SIZE
rxsize = SCD30_SERDEV_RX_HEADER_SIZE + size + SCD30_SERDEV_CRC_SIZE;
if (rxbuf[2] != (rxsize - SCD30_SERDEV_RX_HEADER_SIZE - SCD30_SERDEV_CRC_SIZE)) {
rxsize -= SCD30_SERDEV_RX_HEADER_SIZE;
memcpy(rsp, rxbuf + SCD30_SERDEV_RX_HEADER_SIZE, rxsize);