CPU temperature monitoring

[ERokc]

Does the Do-more operating system monitor CPU temperature?
If so can my program read the temperature?  I would like to be able to monitor temperature during the summertime to see if approaches the limit. What is the limit and what does Do-more do at the limit?

[Controls Guy]

If it doesn't, maybe just include an input for cabinet internal temp to compare with the ambient temp spec.  The CPU power should be reasonably constant (Hosties confirm?), which would mean a fixed relationship between ambient and actual CPU temp.  IOW, whenever it's 75 in the cabinet, the CPU is 110 or whatever.

[BobO]

Would be nice to have, but no, it doesn't.

[ERokc]

Boo, I was hoping for a ready to read monitor.  I don't have analog inputs in my design so  I should measure the temperature rise inside the cabinet and determine the ambient limit for the machine.  I have the cabinet fan thermostat set for 110F.  At this point I don't know the building temperature rise in the summer time.

So, does anyone know what happens if the CPU goes over temperature?

[BobO]

Sorry. Typically sensors like that are built in to processors that might run hot due to high power. Do-more actually uses an FPGA based soft processor, which does not run particularly hot, and the part we use does not have a provision for a temp sensor, although I think some of the higher end parts do.

As for how it will behave when over temp...well...it'll work great, until it doesn't. The nature of failure is really hard to know. We have pushed them hard and they are pretty hard to break. That said, you need everything in the system to work well, so I wouldn't plan on running beyond the published specs.