stack overflow

[Ben Li]

Hello,

I'm just trying to run the LTE_BLE_GATEWAY sample program and I've flash all the nessesary firmware onto the nrf9160dk baord. However, when I turn on the nrf52, it gets connected to the nrf8160 for a split second and it reset itself. Therefore, I'm wondering what is happing here. I've tried increasing the  MAIN_STACK_SIZE and the SYSTEM_WORKQUEUE_STACK_SIZE in the nrf9160dk_nrf52840.conf but none of that works. Is there anything that I did wrong here?

[Simon]

Solution:

Try increasing CONFIG_BT_RX_STACK_SIZE.

Check the file <sample>/build/zephyr/.config what CONFIG_BT_RX_STACK_SIZE is currently set to and set it to a higher value in the prj.conf file.

Explanation:

I can see from your log that the overflow happened in the thread "bt_rx_thread". After searching for bt_rx_thread in the whole NCS, I figured out that this thread was created in zephyr/drivers/bluetooth/hci/h4.c, and if you look at line 38 in this file you see that the stack size is determined by CONFIG_BT_RX_STACK_SIZE