SPS30_SERIAL_SOF_EOF
buf[num++] = SPS30_SERIAL_SOF_EOF;
buf[num++] = SPS30_SERIAL_SOF_EOF;
if (!priv->num && size && buf[0] != SPS30_SERIAL_SOF_EOF)
if (!priv->escaped && byte == SPS30_SERIAL_SOF_EOF) {