Connecting and disconnecting BLE with nRF52832

[Junichi]

When disconnecting and connecting BLE, if the J-Link debugger is connected, BLE_EVT_DISCONNECTED in ble_evt_handler is executed, but if the debugger is not connected and the device is running, BLE_GAP_EVT_DISCONNECTED is not executed.

I'm checking by entering a command to turn on the LED after BLE_GAP_EVT_DISCONNECTED.

What should I check first?

[Turbo J]

If physically disconnecting the debug cable changes behaviour beyond the sleeping stuff, check GND connection(s).

The debug cable contains another GND wire...

[helsing]

Hi Junichi,

Is the application configured to use an external crystal? Is it configured to use LDO or DC/DC?

Which SDK are you using?

[helsing]

Hi Junichi,

Is this a custom board? Have you verified that any other samples (Blinky, for example) are running properly without J-Link connected? Here is a chain of tickets referring to similar problems.

Debug mode forces the LDO to be on. If Blinky is not running properly, check if DC/DC is enabled in the code and try disabling it: CONFIG_BOARD_ENABLE_DCDC=n.