Hi, I am trying to implement a master-slave SPI configuration with multiple slave devices on a single SPI bus.
For this purpose I wanted to play with apps/system/spi/ SPI Tool to experiment and understand how multiple slave devices can be configured on a single bus in Nuttx, and a question occured: In SPI configurations I have seen in Nuttx so far, there is only a single CS pin number defined and this corresponds to a single device. How, multiple slave devices can be used in this situation? In SPI Tool the default value of uint32_t CSn is 0, today I will make some experiments and research to find-out my own answer but I'll also appreciate having your comments about what happens if I chose CSn = 1,2,3.. , what is the relation between this parameter and the actual hardware? I also wander the effect of SPI devtype parameter. Thanks and best regards, Murat
