RE: HowTo: nRF52840 Dongle + 6 Axis IMU connected via SPI -> sending raw data with BLE to MatLab

Simon — Wed, 02 Feb 2022 14:38:10 GMT

I'm not aware of any samples with both Bluetooth and SPI/ICM-20649 support, but if you get both of them to work separately, it should be easy to merge them together.

Unfortunately, I could not find any ICM-20649 related samples. However I found a sample for the icm42605 (not sure how different it is from the icm20649?): ncs/zephyr/samples/sensor/icm42605. Maybe you could make it work by modifying the underlying driver ncs/zephyr/drivers/sensor/icm42605.

If you can't get that to work, you can use the SPI API directly and write the driver for ICM20649 yourself on top of that, check out these SPI samples:

https://github.com/crfosse/ncs_projects/tree/main/peripheral_zephyr/spi
- You might need to modify this a little to make it compatible with NCS v1.8.0
https://github.com/nrfconnect/sdk-zephyr/tree/d4cde89906b0738436bb566f75b6fbbf57ff741f/tests/drivers/spi/spi_loopback
- A test demonstrating how to use the SPI API

Check out these folders to find Bluetooth samples:

ncs/nrf/samples/bluetooth

ncs/zephyr/samples/bluetooth

Maybe https://github.com/nrfconnect/sdk-nrf/tree/v1.8.0/samples/bluetooth/peripheral_uart would be a good starting point?

Best regards,

Simon