PIC18LF4525 needs to conserve power for 15 minute increments

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robbycon

Joined: 31 May 2009
Posts: 2

07 Nov 2009 3:52 PIC18LF4525 needs to conserve power for 15 minute increments

I am writing a program on this PIC18 that takes measurements, writes to flash, then waits around for 15 minutes (or some other user-defined time period) until it does it again. It is supposed to do this for 2 weeks, so I need to conserve battery.

What's in my mind is to put the PIC in sleep mode, then trigger an interrupt off an internal timer.

After some reading, I see that the sleep() function shuts off all timers, but I can keep Timer1 running if I can put the PIC in SEC_RUN mode. The OSCCON<1:0> bits (which are also known as SCS1:SCS0) need to be set to 01, and maybe some other bits need to be set as well.

What I don't know is what the actual code looks like to implement this. I don't know if this is some inserted assembly code (I don't know how to do that). Can somebody help me? Thank you.