This example shows how to connect the SPI slave device to the TR [N] so the [N] behaves as SPI master. IQRF OS SPI support implements only the SPI slave side. SPI slave device is controlled using a custom command passed to the custom DPA peripheral. See the source code for full details.
→ Self-study tip: Connect ordinary another TR [N] with DPA SPI peripheral being enabled thus playing the role of SPI slave. Try to communicate bi-directionally between the two Nodes.