Using nrf BLE with DWM1001-DEV

RE: Using nrf BLE with DWM1001-DEV

Sigurd Hellesvik — Tue, 16 Aug 2022 11:03:19 GMT

Hi,

It is usually not an issue to use SPI in parallel with the SoftDevice.

If you use the SPI Master driver, such as in the SPI Master example, the CPU only has to communicate with the SPI occasionally, and it is unlikely that the SoftDevice will delay these enough for it to impact the SPI device.

But as it is a timing issue, I recommend that you test this yourself.

Regards,
Sigurd Hellesvik

RE: Using nrf BLE with DWM1001-DEV

dfbdfb — Tue, 16 Aug 2022 05:05:22 GMT

Thank you for your answer!

I tried to disable FreeRTOS and it works fine now!

If I want to get saadc output and send the data through ble_nus service at a high throughput, will the continuous SPI communication with DW1000 get influenced? How should I arrange the IRQ priority for them?

Thanks again!

RE: Using nrf BLE with DWM1001-DEV

Sigurd Hellesvik — Mon, 15 Aug 2022 09:13:59 GMT

Hi,

FreeRTOS is a Real Time Operating System providing functionality for Real Time functionality such as Scheduling.
See https://freertos.org/ and https://freertos.org/FreeRTOS-quick-start-guide.html for more information on this.

From the sample you linked, I guess you can disable FreeRTOS by changing line 49 in sdk_config.h.

Regards,
Sigurd Hellesvik