Wake Up Pin

General
#1

Heys Guys,

So I’m programming my IMP to wake up with a box is opened (it gets exposed to light). I am doing this using a voltage divider with a LDR and and 10k resistor. I have read up on the wake up pin. It states that the imp WILL NOT fall asleep if Pin 1 is high. I have implanted a server.log to read the values read from Pin 1 and it is 1 the entire time, yet the imp still shuts off. Has anyone done something similar?

#2

Just so you know, you can use imp’s built-in LED detect light.
http://electricimp.com/docs/api/hardware/lightlevel/

#3

I know, but this does not help me with the wake up part, and i have tested the variable resistance with a multimeter to ensure that the values are changing

#4

What does your code look like? Note that the wakeup is LEVEL sensitive, not edge, and hence the imp will not sleep if pin1 is high (it’ll reboot immediately)