IMP stuck - my bad code?

Squirrel Code
1

My IMP is stuck in a loop. It’s online, I can push new code and the build number increments and the asterisk disappears but the device keeps looping and not accepting the new code. The IMP is a drive away so I can power cycle it tomorrow evening.

It’s the first time I’ve used a while loop and the very first time I’ve locked myself out of an IMP.

The question: Which bit of my code below is bad enough to lock me out?

`
hardware.pin1.configure(ANALOG_IN)
hardware.pin2.configure(ANALOG_IN)

//*** I should have put these two lines AFTER the debug section ***
hardware.pin1.configure(DIGITAL_IN, pin1changed);
hardware.pin2.configure(DIGITAL_IN_PULLDOWN, pin2changed);

debug <- true
while (debug = true)
{
server.log(“pin1:” + hardware.pin1.read() + " pin2:" + hardware.pin2.read())
imp.sleep (1.0)
}
`

2

I don’t know why it would be stuck but the compare operator is “==”

while (debug == true)

3

Either way it’s equivalent to while(1), as “debug” can never get back to being false again. This is a power-cycle job I’m afraid, although at some point we hope to implement a sort of “dead man’s handle” for imps in this situation. (The hard part of that, of course, is working out whether you’ve accidentally written an infinite loop, or deliberately written a loop that takes a long but not infinite time. But after, say, an hour it’d be pretty clear.)

Peter

4

Remember that Squirrel can never interrupt other Squirrel, and can’t interrupt imp.sleep(). Even if you’ve got an event-handler (on a button maybe) that sets “debug” back to false again, that event-handler will not run while the imp is stuck in an infinite while loop.

Peter

5

imp.sleep() is a blocking call, so although you are building new code in the IDE your imp is not processing any messages from the server.

Instead of while/sleep, try imp.wakeup():

`debug <- true
function debugFunction() {
   if(debug == true) {
      server.log("pin1:" + hardware.pin1.read() + " pin2:" + hardware.pin2.read())
      imp.wakeup(1, debugFunction)
   }
})
debugFunction()
`