SPI1 salve configuration results in bus fault using NRF9160 DK

RE: SPI1 salve configuration results in bus fault using NRF9160 DK

Vidar Berg — Thu, 06 Mar 2025 15:44:14 GMT

Glad to hear that it fixed it. All SPIM instances support the same frequency on the nrf9160 (up to 8MHz). The register description below show the supported frequencies.

Ref. FREQUENCY

RE: SPI1 salve configuration results in bus fault using NRF9160 DK

heisenbug — Wed, 05 Mar 2025 19:08:03 GMT

Yes! That works

A follow-up question. Is there a difference in the clock frequency I can set for the various SPI peripherals? What are the frequency steps I can use? Is there a recommended frequency for SPI?

RE: SPI1 salve configuration results in bus fault using NRF9160 DK

Vidar Berg — Wed, 05 Mar 2025 14:38:18 GMT

Hello,

Please try to add CONFIG_TFM_LOG_LEVEL_SILENCE=y (this should also disable CONFIG_NRF_UARTE1_SECURE in the build) to your project configuration and see if you still get this busfault afterward. TF-M has logging enabled on UART1 by default since SDK v2.6.0, which conflicts with SPIM1/SPIS1 if kept enabled.

Best regards,

Vidar