How to wire I2C for NRF 51822 with MPU 9250.What SDK should I use?

[priya]

nRF5_SDK_11.0.0_89a8197 - with MPU.7zthis is how my nRF go studio looks with example blinky and works well. nRF5_SDK_11.0.0_89a8197 - Copy.7zI am trying to wire NRF 51822 over I2C with MPU 9250. If I should use the GPIO's where should I initialize the Pins . What SDK should I use?

[Sigurd]

Hi,

You can use any free/available GPIO pin you have on your board. All GPIO pins can be individually mapped to interface blocks for layout flexibility.

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I would recommend using the newest SDK version that supports the nRF51 series, which is SDK 12.3

I would also recommend taking a look at the MPU examples found here.

[priya]

I am trying to use Nrf 51822 with Mpu 9250. I ahd checked the link you have mentioned above. I tried building the examples but they report a bunch of errors back. How can modify the code . Please let me know where to start .I also looked at the TWI_ sensor example,but it is pretty confusing. This is the first time I am trying to do something like this . Please guide Thank you much in advance.

[Sigurd]

The examples I linked to uses SDK 11, so try using SDK 11. Also make sure that you place the examples in the correct folder. Download the zip file and extract to "sdk_11.0.0_folder\examples". Or just clone it to the same folder. E.g. for the nrf5-mpu-simple example the final folder structure should look like this: your_nRF5_SDK_11_folder\examples\nrf5-mpu-examples-master\nrf5-mpu-simple\

[priya]

Thank you Sigurd. It compiles now when I use SDK 11. I have manipulated the code in ble-MPU simple to get data from MPU 9250 . After I change the code to support NRF 51822 (PCA20006). How can I print values to my PC to see if the values are right (like connect my MPU9250 to my NRF 51822 to my NRFDK52 to the PC)? Or should I just see it in the BLE advertisemnts?

[Sigurd]

You should be able to see the MPU data in e.g. nRF-Toolbox (NUS/UART) and nRFConnect apps for phone/pc if you test one of the examples with BLE. e.g. nrf5-ble-uart-mpu-data-ready-interrupts and nrf5-ble-mpu-simple examples.