::Support::How to use Sleep

:: Support

Board Index

Latest Posts

Welcome Guest [Register] [Login]

Subject :How to use Sleep.. 15-03-2010 15:33:02

cjam

Joined: 15-03-2010 19:19:13
Posts: 3
Location:

Hello,

I am working on a project that uses the nanoCore12 (24 pin) for power managment purposes and I would like to put the processor to sleep for a certain ammount of time. Is there a way to do this ? I can't seem to figure out which interrupts will wake the MCU up, Does anyone know how to wake the MCU up after putting it to sleep?

Regards,

Colter

IP Logged

Subject :Re:How to use Sleep.. 17-03-2010 09:42:03

carl

Joined: 27-05-2009 10:51:54
Posts: 17
Location: Toronto

Check the System object called Sleep in the API: http://www.nqbasic.com/documentation/43-reference/114-nqbasic-api.html?start=9 It wakes up the MCU on external interrupts only (i.e. IRQ and XIRQ). Unfortunately, those signals are not available on the 24-pin version of NanoCore12.

IP Logged

Subject :Re:How to use Sleep.. 17-03-2010 10:53:22

cjam

Joined: 15-03-2010 19:19:13
Posts: 3
Location:

Hello Carl, After reading the API, it sounded as if the mcu could wake up to both external and internal interrupts. However, is there any internal interrupt (maybe a system timer?) that will occur if the mcu is sleeping? Regards, Colter

IP Logged

Subject :Re:How to use Sleep.. 17-03-2010 13:23:55

carl

Joined: 27-05-2009 10:51:54
Posts: 17
Location: Toronto

Oops-- you're right! If you pass a parameter of 0, any interrupt will wake up the MCU. The interrupt source could be SCI, RTI, etc.

IP Logged

Subject :Re:How to use Sleep.. 18-03-2010 07:55:43

cjam

Joined: 15-03-2010 19:19:13
Posts: 3
Location:

Hello Carl, Thank you for the useful information. I have tried using the RTI by using RTI.RTI_Start() just before I put the MCU to sleep, however it does not seem to wake up the MCU. Is there a certain way that I should be invoking the RTI.RTI_Start() method? I was thinking of trying to use the WDT object however I'm not sure if that will wake the MCU either. Regards, Colter

IP Logged


	Page #

nqBASIC