I can see definitely the led turn on. But now the problem is whilst the LSM303AGR board isn't always transferring, I see the led periodically turn on very quickly guide. This periodic interrupt is getting detected by way of TI CC2640R2F interrupt pin...

You can try it with latest sheet of your device which you are using in your program. I'm also working on the same model for my skateboard model. Learn more about the model information.