BLE initialization error for nRF5340 on thingy91x

RE: BLE initialization error for nRF5340 on thingy91x

dejans — Fri, 10 Oct 2025 06:37:08 GMT

Hi,

Thank you for the update.

Best regards,
Dejan

RE: BLE initialization error for nRF5340 on thingy91x

KazuNino — Fri, 10 Oct 2025 02:40:18 GMT

Hello,
I looked at the central and central_and_peripheral_hr samples. However, in the end, I used a program created in micropython that was converted to ChatGPT.
Best regards,

KazuNino

RE: BLE initialization error for nRF5340 on thingy91x

KazuNino — Fri, 10 Oct 2025 02:33:05 GMT

Hello,
Thank you for your advice.
I turned on sysbuild and built the app. However, empty_net_core was assigned to net core, preventing BLE communication. I investigated using ChatGPT and discovered a setting that uses hci_ipc. In the Edit Build Configuration screen, set the following to Extra CMake arguments:
-DSB_CONFIG_NETCORE_HCI_IPC=y
With this setting, HCI_IPC is now assigned to net core. BLE initialization is now successful, and BLE communication is now possible.
Thank you for your help.

KazuNino

RE: BLE initialization error for nRF5340 on thingy91x

dejans — Thu, 09 Oct 2025 15:08:12 GMT

Hi,

Which specific nrf bluetooth central sample do you use?

Best regards,
Dejan

RE: BLE initialization error for nRF5340 on thingy91x

Turbo J — Thu, 09 Oct 2025 06:39:39 GMT

Make sure that sysbuild is turned ON and that both cores got flashed. BTLE central mode requires a different net core image.