SPI long handler and crach

[Fabien Comte]

Hello, Platform nRF52 with SDK 11 (S132)

I use nrf_drv_spi_init to register a Handler (used for screen and SD card so it can be long)

I have sometimes crashes when i have activity on SPI and BLE at the same time. My Handler is maybe too long for execution.

Is there any way to check that ? Change SPI priority to low and to not perturbate SD timings ?

Thank you.

[James Yu]

In the nrf_drv_spi_config_t struct used to initialize the SPI, you can set the irq_priority field to APP_IRQ_PRIORITY_LOW

[Fabien Comte]

Perfect, thank you

[bvuong87]

Hi, I had a quick question on this:

From where does the conflict arise if the SPI IRQ priority is APP_IRQ_PRIORITY_HIGH? My understanding of the IRQ priorities is all BLE and SD related priorities run at level APP_IRQ_PRIORITY_HIGHEST, so even if SPI is running at APP_IRQ_PRIORITY_HIGH, shouldn't the SD still be able to take control of the system as needed?

Thanks!