Stm32f401 Nucleo Board with ISM330DHCX and BlueNRG-M2SA

[Kumar123]

Hi 

I am trying to send data from the ISM330DHCX sensor to BLE (BlueNRG-M2SA) on the STM32F401 Nucleo board. I have installed the XCUBES_MEMS1 software and successfully tested the LED example via BLE. Now, I want to transmit the ISM330DHCX sensor data through a BLE app. Can anyone guide me.

[Username123]

How to send sensor data from the ISM330DHCX to a Bluetooth app using the X-NUCLEO-BNRG2A1 interface with an STM32F401RE?

[Andrew Neil]

Divide & conquer!

You have 2 entirely separate tasks here:

1. How to use the ISM330DHCX IMU:
   https://www.st.com/en/mems-and-sensors/ism330dhcx.html
   
   
2. How to use the X-NUCLEO-BNRG2A1:
   https://www.st.com/en/ecosystems/x-nucleo-bnrg2a1.html 

Get them working separately first, then bring them together.

The above Product Pages will point you to the resources for each one.

[Andrew Neil]

As stated in this similar thread, the key is: don't try to do everything at once!

You've got the sensor part working, so set that aside for now.

Now concentrate on just the Bluetooth part - without the sensor.

Find documentation & support for the BlueNRG-M2SA here:

https://www.st.com/en/wireless-connectivity/bluenrg-m2.html

Get familiar with the ST-provided examples.

[Andrew Neil]

Almost the same question here:

https://community.st.com/t5/stm32cubeide-mcus/stm32f401-nucleo-board/td-p/777690

---

threads merged.

[Kumar123]

Hi

I have checked both the BlueNRG-M2SA and ISM330DHCX, and they are working fine. Now, how can I integrate the two and send data via a BLE app? Please let me know.

[Andrew Neil]

The same way that you'd integrate any two functions.

What have you tried?

Where are you stuck?

[Kumar123]

Hi 
 I have attached two codes. I have checked them, but I'm not receiving values in the BLE app. Could you let me know if any code modifications are needed?

[Andrew Neil]

You said you have BLE working already?

So compare & contrast what's different between your working and non-working code.

Use the debugger; if that doesn't work (as it will affect the real-time performance), Instrument the code so that you can see what's happening in real time.