Low power modes with c5505?

sparkchaser

Hey all,

The project I am writing is entirely hardware and software interrupt driven, and currently I just put the device into a while(1); loop at the end of main(), but I would rather put the device into a low power mode similar to what I do with MSP430 programming. I have been reading the User's Guide about the different IDLE modes, and I would rather start with some sample code instead of writing my own code from scratch. Does anybody have a link to a software example showing the use of the different IDLE modes. I have already looked through the TMS320VC55XCSL-LOWPWR CSL library examples, but I didn't find any examples which use IDLE modes.

Thanks,

Sparkchaser

over 16 years ago

0 Leandro Oliveira over 15 years ago

Prodigy 100 points

Hi,

I also would like some help to configure the low power mode. I started using the CSL library and also found no support to work with the registers for low power mode.

Thanks,

Leandro

0 Danimal over 15 years ago in reply to Leandro Oliveira

Expert 1135 points

Welcome to the club!

Hopefully someone from TI will read this post to at least get a hint that the community would like to see some samples on going into and out of low power modes at the very least. An added bonus would be to add a set of low power software routines into the chip support library. I've heard excuses of all kinds, like every application is specific and needs to be taylored to

The C55x series DSP parts use a much different interface.

I've been using the MSP430 processor on a few projects here and it's low power mode is a much different interface for putting the processor into low power modes. Be sure to read the errata's for those parts!

I have several posts in this forum related to the IDLE configuration. Here's a couple:

http://e2e.ti.com/support/dsp/tms320c5000_power-efficient_dsps/f/109/p/114639/408731.aspx#408731

http://e2e.ti.com/support/dsp/tms320c5000_power-efficient_dsps/f/109/p/112461/409441.aspx#409441

The best literature that I've found describing the low power modes of operation can be found in section 8 of SPRU317J (C55x Peripherals overview) and section 1.5 of the SPRUFX5A (C5515 User's Guide) .

http://processors.wiki.ti.com/index.php/Low_Power_Considerations_for_55x

http://processors.wiki.ti.com/index.php/55x_FAQ

Note that not even the TI wiki side provides any sample code or even provides anything in the FAQ list related to this topic.

Hope this helps!!

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Low power modes with c5505?