How use multiple peripherals with one SPI port ?

RE: How use multiple peripherals with one SPI port ?

Håkon Alseth — Tue, 26 Nov 2019 14:47:59 GMT

[quote user="JimBr"]is .ss_pin = NRF_DRV_SPI_PIN_NOT_USED the same as ss_pin = NRFX_SPIM_PIN_NOT_USED ? because the compiler does not know yours.[/quote]

Sorry! Yes, those are the same

Kind regards,

Håkon

RE: How use multiple peripherals with one SPI port ?

JimBr — Tue, 26 Nov 2019 13:53:35 GMT

Hi,

Thank you very much! I was thinking about this method as well.

is .ss_pin = NRF_DRV_SPI_PIN_NOT_USED the same as ss_pin = NRFX_SPIM_PIN_NOT_USED ? because the compiler does not know yours.

Thank you.

Kind Regards,

Jimmy

RE: How use multiple peripherals with one SPI port ?

Håkon Alseth — Tue, 26 Nov 2019 13:35:32 GMT

Hi,

The driver only supports one specific pin to be used as a CSN/SS pin. It does however support to control this manually, by disconnecting the pin.

If you set the .ss_pin = NRF_DRV_SPI_PIN_NOT_USED, you can control each chip select (SS) pin manually in your application. Then you can configure each individual SS pin to output, and set active/inactive in your spi_send function.

Kind regards,

Håkon