Sleep on long button press wakes up automatically

RE: Sleep on long button press wakes up automatically

Susheel Nuguru — Mon, 12 Sep 2016 06:39:59 GMT

Quote from Product spec, you are right, DETECT is level triggered not edge trigged, my bad, thanks for correcting

When the correct level is detected on any such configured pin, the sense mechanism will set the DETECT signal high. Each pin has a separate DETECT signal, and the default behaviour, as defined by the DETECTMODE register, is that the DETECT signal from all pins in the GPIO Port are combined into a common DETECT signal that is routed throughout the system

RE: Sleep on long button press wakes up automatically

bds — Fri, 02 Sep 2016 08:04:15 GMT

BTW serveral other responses on this board seem to indicate that wakeup is always level triggered and not edge triggered. Can you verify this Aryan?

RE: Sleep on long button press wakes up automatically

bds — Thu, 01 Sep 2016 16:01:33 GMT

I have exactly the same problem. Reproducing the problem:

default ble_app_uart example code from ble peripheral example
change:

define BTN_ACTION_SLEEP BSP_BUTTON_ACTION_RELEASE

define BTN_ACTION_SLEEP BSP_BUTTON_ACTION_LONG_PUSH

in bsp_btn_ble_c

sd_power_system_off() does not seem to work anymore (advertising indication LED stays blinking)

RE: Sleep on long button press wakes up automatically

Susheel Nuguru — Thu, 01 Sep 2016 10:45:51 GMT

how are you verifying that the system is waking? can you attach your project as you are testing this on development kit, it will be easy for me to test and see what else is going on.

RE: Sleep on long button press wakes up automatically

Eddie — Thu, 01 Sep 2016 10:17:10 GMT

It makes sense that it would only wakeup at an edge. So I'm at a loss why it is powering back up right away in my case. I'm using the development kit with the first button. I've even tried a different button and different boards. Is there a way to check why it is waking up?

RE: Sleep on long button press wakes up automatically

Susheel Nuguru — Thu, 01 Sep 2016 09:11:37 GMT

The button handler which uses GPIOTE driver underneath is configured to wakeup only at any edge , that is rising or falling edge of button input. So as long you are not releasing the buttin it should be asleep as the GPIOTE is not level trigerred. I tried you example it worked perfectly OK for me, i mean after the long press, the system went to system_off stayed there until i released the button.

Note that in debug mode you cannot know that the device went to system off or not (check the Emulated system off mode that works in debug mode).