Current Consumption in CC2530

Hi Li,

Condition #3 - All Z-Stack tasks “agree” to permit power savings:

This is managed automatically by the Z-Stack, you must ensure
that your application permits power saving. For more information
on this topic read "Power Management API" in OSAL_API.pdf

Condition #4 - Z-Stack tasks have no scheduled activity:

Managed automatically by the OSAL. However, in case you
insert while(1) in some place, your system stucks! 

Condition #5 - The MAC has no scheduled activity:

Managed automatically.

You didn't mention the device you are are using to run SensorDemo

on. In case the EM based on cc2530 SoC read the datasheet to see

what are the possible power states and what is the power consumption

in each power state.

Br,

Igor

thank you Igor

I am using the CC2530EM discrete 1.3.1 and SmartRF05EB Rev 1.81

here is power consumption in CC2530datasheet

Power Mode 1 (4 μs Wake-Up): 0.2 mA

Power Mode 2 (Sleep Timer Running): 1 μA

Power Mode 3 (External Interrupts): 0.4 μA

and I didn't change the code in SensorDemo

looks like I don't get into any of those sleep mode........

Hi Li,

You see, getting to a lower power modes can be affected

by many aspects.

1. Is your application (the demo one) sends periodic messages
   to the ZigBee network (can be managed by manually setting
   poll rates)? 
2. Is your application compiled for an End Device?
3. Do you measure power consumption while debugging, because
   While debugging the cc2530 simulates sleep mode PM3 and you
   will see higher power consumption then it states in datasheet.
4. How exactly configured the GPIOs, floating pins can be the reason
   for higher power consumption.

In fact there can be a lot of reasons why you getting result that are not

expected. I can suggest your to search the forums (this forum and also

 Low Power RF ZigBee® Software & IEEE 802.15.4 Forum). I assure

you that you'll find a lot of valuable information in a couple of minutes. :)

Br,

Igor 

Igor Sherer  Thank you

1) yes

My application (the demo one) sends periodic messagesto the ZigBee network

and how can I manually setting poll rates? there is a VARIABLES 'myReportPeriod' in the DemoSensor.C ,which I can set the sending frequency

2 )yes, it is for end device

3 ) I measure the current off the debug mode ,The current of CC2530EM is 2mA and The current of SmartRF05EB is 25mA,and I removed all the jumperhead I don't need,the problem is I try to power the SmartRF05EB+CC2530EM with an energy harvester and that current is too high for me.Would it be better if I use the Battery Board?

4) I tried to configure the unused IO pins as a GPIO output by setting the value of PxSEL,  I add the code in the "hal_board_cfg.h"

Are there other things need to be done in the Z-stack code to make sure the end device goes into sleep mode when it doesn't send the data?

I admit I do not understand the Z-stack  well

thanks a lot

Hi Li,

1. It is a good idea to use Battery board to measure the actual current.
2. "other things that can be done":
   You can read the "Power Management For The CC2530", it is a good
   document to start with. You can find it in your Z-Stack installation
   folder\Documents\CC2530

If the SoC configured right, and there are no ongoing transmissions form ZED

you should measure a few MICRO amperes.

Br,

Igor

thank you Igor

I have read the Power Management For The CC2530

it states "TIMER sleep generally reduces power consumption to a few milliamps, while DEEP sleep reduces it to a few microamps."

Hi Li,

As I understand it, you are willing to reduce the power consumption to few microAmps?

You probably should measure the actual current on Battery board.

Br,

Igor

hi igor

As I understand only in the deep sleep mode the power consumption is  few microAmps,but in the deep sleep it need a external wake up which not fit my application...

So is there other ways to reduce the power consumption of the SmartRF05EB?  looks like the SmartRF05EB consumes the most power of the system

hi igor

As I understand only in the deep sleep mode the power consumption is  few microAmps,but in the deep sleep it need a external wake up which not fit my application...

So is there other ways to reduce the power consumption of the SmartRF05EB?  looks like the SmartRF05EB consumes the most power of the system

thanks a lot