BLE number of pakets NRF52832

[marsss]

Hi everybody,

I have a question about the number of data pakets which I can send with the BLE. Every data paket has a range of 20 Byte.

Now I want to send about 55 of these data pakets. But I only can send 10 then it works without problems. When I want to send more than 10 pakets, my device is sending 10 and after that, the BLE is crashing. 

What is used:. Nrf52832 module, ble_nus.c  

Does anybody know, why I can only send, in every case I tried, 10 pakets. Maybe it is defined anywhere and I don't know where.

Thanks a lot 

Marius

[Sigurd]

Hi,

The internal SoftDevice buffer is probably full. Do you get any error-codes printed in debug configuration  ?

Try increasing NRF_SDH_BLE_GAP_EVENT_LENGTH in sdk_config.h to e.g. 300

[marsss]

That could be. No, I don't get an other error code in the debug mode. 

I'll try with your tip and give feedback

Thanks a lot

[marsss]

Hi,

[marsss]

I tried to Change the NRF_SDH_BLE_GAP_EVENT_LENGTH like you said. But then I get the error 4 which says not enough memory? 

[Sigurd]

You need to adjust the allocated RAM to the SoftDevice. In Segger Embedded Studio you can adjust it here: