BLE Notification Function Call Causes Crash. Can anybody understand this register dump and what would cause it?

[abelson]

I am trying to get BLE notification data from my Beetle BLE and am struggling to connect to the notify service. When using multiple BLE scanner apps on my phone, I can subscribe to the notifications and see the data flow in, but when I try to run the ESP32 scanner code, it crashes when I call pRemoteCharacteristic->registerForNotify(notifyCallback); I also call this function right after I call if(pRemoteCharacteristic->canNotify()) so I know that the notify byte is set.

When the ESP32 gets to the registerForNotify line, it get this error:

Code: Select all

Guru Meditation Error: Core  1 panic'ed (LoadProhibited). Exception was unhandled.
Core 1 register dump:
PC      : 0x4000c2af  PS      : 0x00060130  A0      : 0x800d23b8  A1      : 0x3ffc8610  
A2      : 0x3ffc862a  A3      : 0x00000007  A4      : 0x00000006  A5      : 0x3ffc862a  
A6      : 0x00060d20  A7      : 0x00000000  A8      : 0x800d70bd  A9      : 0x3ffc85f0  
A10     : 0x00000018  A11     : 0x3f4014a5  A12     : 0x00000018  A13     : 0x0000ff00  
A14     : 0x00ff0000  A15     : 0xff000000  SAR     : 0x00000016  EXCCAUSE: 0x0000001c  
EXCVADDR: 0x00000007  LBEG    : 0x400014fd  LEND    : 0x4000150d  LCOUNT  : 0xfffffffa  

Backtrace: 0x4000c2af:0x3ffc8610 0x400d23b5:0x3ffc8620 0x400d1c06:0x3ffc8650 0x400d1f4a:0x3ffc86a0 0x400d76dd:0x3ffc86f0 0x4008e089:0x3ffc8710

Does anybody know why this would happen?

Here is a link to the code that I am using:

https://pastebin.com/jMAvFPj3