BLE TIME OUT

[Laurent L]

Hi 

I am not busy developing an new product with nRF52840.

I want to use the BLE functionality and started with the ble_app_hrs sample application. 

I download the pca10056 solution  and test it on my DevKit start52840dk and use the dongle nRF Connect to validate the application and which worke fine.

Now I have tried to run the the same sample on my device but i get a timeout. 

I understanding the principles of BLE but i am a bit where to start to find the reason for the timeout.

Debugging with BLE is very limited

Can you help ?

[Laurent L]

I am using SDK17. When using the nRF connect i am getting

14:57:37.531 Connecting to device

14:57:37.886 Connected to device C4:B4:05:5D:12:6A: interval: 7.5ms, timeout: 4000ms, latency: 0

14:57:37.946 ATT MTU updated for device C4:B4:05:5D:12:6A, new value is 247

14:57:41.892 Disconnected from device C4:B4:05:5D:12:6A, reason: BLE_HCI_CONNECTION_TIMEOUT

[Sigurd]

Hi,

Do you have the log from the nRF52840 as well? You can get the nrf_log from either UART or Segger RTT logger backend.