Wakeup via Pin Interrupt

Firmware
1

I have an electron with firmware 0.6.2. I use the following sleep command

System.sleep(D1, RISING, SLEEP_NETWORK_STANDBY, 120);

The system will wakeup after two minutes, but will not wkaeup when D1 gose high. (using a scope I see it come from 2mn to 3.25V

I have initialized D1 as

pinMode(D1, INPUT);

Do I also need to initialize it as an interrupt for this to work?

2

Normally you’n not need to initialise the wake pin at all since System.sleep() should do this implicitly.
But if you did it would need to be INPUT_PULLDOWN (or an external pull-down) to detect a rising edge.

Update:
I have now tested on my own Electron and as expected it just wakes as expected.
Try this simple sketch

void setup() { }
void loop() 
{
  delay(5000);
  System.sleep(D1, RISING, SLEEP_NETWORK_STANDBY, 120);
}

Double check you are actually using D1 and not D0.
Since the silk print has the pin name below the pin it’s easy to mix them up - I keep looking at the side of the pin headers where the pin names are less “confusing”.

2 Likes
3

I am definitely using the correct pin.

It has an external pulldown of 68K. The voltage swing is from 2mv to 3.25V. I removed all initialization code for D1 and it still does not work.

I tried A3 and that pin does work. D1 is supposed to be an allowable interrupt pin. Not sure why D1 will not work for me.