Unable to run the sample application code (ble_app_uart) on BT832 module

[NikhilIngale]

Hello,

I am currently working on BT840 and BT832 modules and trying to run the sample codes which are given by Nordic (specifically ble_app_uart which runs with UART service app provided by nordic). The application code on BT840 module is working as per the requirements (with the use of nRF UART2.0 app) but i am facing the issue with the BT832 module. I am able to run the normal UART application along with the LED and all (peripheral examples) but unable to run it with ble stack (ble_app_uart) on BT832.

Tried to debug the code in IAR where it is getting stuck at initialization routine of the ble stack.

I would like to have some technical support for running the application for BT832 module.

Any quick response would be highly appreciated.

Best Regards,

Nikhil

[Jørgen Holmefjord]

Hi Nikhil,

Have you connected a 32.768 kHz crystal to your BT832 module? From the datasheet, it seems like this is not included in the module but can be added on host board: "For lower power consumption at idle state, a 32.768 kHz crystal is added on the host board."

The examples in our SDK use the external crystal by default, as all our DKs are populated with this part. You can change the examples to use internal RC oscillator instead, by modifying sdk_config.h as described in this thread.

Best regards,
Jørgen

[NikhilIngale]

Hi Jorgen, Thank you for the quick response. Yes, i was doing the same mistake. It is working fine now by changing the clock source to internal one.

[Rafael]

12 pF capacitors are needed when we add the crystal?