CCS/CC3200: How to get lower current value in CC3200 HIB mode

Gaia Codeluppi

Part Number: CC3200
Other Parts Discussed in Thread: , UNIFLASH

Tool/software: Code Composer Studio

Hi,

I'm trying to make my cc3200 board into hibernate mode using the "hib" example provided with CC3200SDK_1.1.0 but the current (0.048 A) flowing from alimentation (of 5V) to board does not go down to values reported into the datasheet (few uA) when the board is "hibernated".

I've built the example hib program using CCS v6.0.1, flashed it into the CC3200 using CCS Uniflash and test it via Tera Term.

The current is soo high also in hibernate state (0.048 A): may the example program i am using have same bugs? May the board actually never enter into hibernation?

I'am new on programming boards like CC3200 and on using CCS: has someone some code to reach my goal or knows where to find it?

Thanks,

Gaia.

over 6 years ago

0 Jesu over 6 years ago

TI__Mastermind 22935 points

Hi Gaia,

Keep in mind, the hibernate example periodically wakes up to report. During that time, you will not see the expected power consumption. If you are measuring the power with an ammeter it will just tell you the average consumption which includes the wake up power.

Regards,
Jesus Pintado

0 Gaia Codeluppi over 6 years ago in reply to Jesu

Prodigy 30 points

OK, thank you.

I am measuring instantaneous current i think and i see difference values of current when hib program is running:

- 0.048 A when it should be in hibernation (i think the cc);

- from 1.0 to 0.7 A otherwise (woken up).

Is that possible?

Gaia.

0 Jesu over 6 years ago in reply to Gaia Codeluppi

TI__Mastermind 22935 points

Hi Gaia,

Your current should not be that high while the MCU and the NWP is active. The most you should be seeing is about 250mA according to the datasheet.

What are you using to measure current?

-Jesu

0 Gaia Codeluppi over 6 years ago in reply to Jesu

Prodigy 30 points

Hi Jesu,

I am using this device:

Thank u,

Gaia.

0 Jesu over 6 years ago in reply to Gaia Codeluppi

TI__Mastermind 22935 points

Gaia,

The equipment you are using to measure has 1mA resolution for measuring current. You will not be able to accurately measure micro-amps with that.

This E2E post describes a similar concern you have - hope this helps.

Jesu

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CCS/CC3200: How to get lower current value in CC3200 HIB mode