RE: Pairing failed with "Unknow function at 0x00000A60"

Michael Kreher — Sat, 04 Jul 2020 15:16:36 GMT

Hi Vidar,

thanks a lot for your answer in light speed :-)

I'am wondering why the function m_ipv6_medium_evt_handler() is called. Because I commented out the code for initialization the CoAP and ipv6 stuff. Maybe where is some magic in the SDK background which looks for presence of this handler function and then calls it if it found.

I will take a look at this point.

Thank you again for showing the cause of the fault. You can close this ticket.

Best regards.

Michael

RE: Pairing failed with "Unknow function at 0x00000A60"

Vidar Berg — Mon, 29 Jun 2020 09:43:06 GMT

Hello,

Thanks for uploading the project. I was able to replicate the problem with it. The problem, as you can see from the screenshot below, is caused by the non-initialized function pointer "m_ipv6_medium_evt_handler()" in ipv6_medium_ble.c. This function gets called when your app receives a BLE event from the Softdevice.

0xA60 is the address of the hardfault handler inside the MBR. Execution will halt here because SES enables the "Hardfault breakpoint" by default. But the interrupt will be forwarded to the application if you continue execution in the debugger. You can also disable the breakpoint.

Best regards,

Vidar