jku,
the system file path is /sys/class/thermal/thermal_zoneX/temp where x is 0 through 4. --> there are 5 zones, not four.
1, 3 and 4 usually hold values.
1: closely follows an ambient temperature .. could be battery recharge, could be dormant Quark
3 and 4: are presumed core tempatures of the Atom.
0 and 2 usually do not have a value and both usually report cat: read error: Invalid argument.
I previously understood the value was going to be in mC.
So, when one/both of the core temps drop to 30C or below - that is when zone2 is seen to kick in
My Question: Should this be an alarm state that cores must not drop below 30? IS IT HAZARDOUS to the module.
Should we be paying attention to it - ie Edison is beyond thermal operational specs and it will cause damage?
THUS the stand point of documentation and/or definitions of the zones