CC1310: standby and wake-up

I suggest you to use power Analyzer or scope to check power consumption in details to make sure your device goes to sleeping mode when there’s nothing to process in task.

Hello Viraj,

can you measure current drain after sleep() call and check it against a datasheet?
Looks that you do not enter a power saving mode.

Do you use TI-RTOS?
Looks like you are mixing concepts of Power Modes in TI-RTOS and System CPU Modes.

hello Tomasz,
Thanks for the reply,
I want to ask you that can I use Power_sleep(unsigned int sleepState), instead of sleep()?
if yes, what changes i've to do?

Regards,
Viraj

Hello Tomasz,

current drain after sleep is 40uA and on transmit mode is upto 6mA.

My code is as follows

while(1)
{
        memset(txPacket.payload,0,EASYLINK_MAX_DATA_LENGTH);
        memcpy(txPacket.payload, nodeAddress, EASYLINK_MAX_ADDR_SIZE);
        getMulticastAddress(txPacket.dstAddr);

        txPacket.payload[8] = RADIO_PACKET_TYPE_SENSE_PACKET;

        txPacket.len = sizeof(struct PacketHeader);

        PIN_setOutputValue(pinHandle, Board_PIN_LED1,1);
        usleep(1000);
        PIN_setOutputValue(pinHandle, Board_PIN_LED1,0);

        if(EasyLink_transmit(&txPacket) == EasyLink_Status_Success)
        {

        }
        sleep(DEVICE_NODE_SLEEP_TIME);     // sleep 10 sec
}

Based on your current drain measures, quick math shows that something is wrong with:
- a battery
- a measurement.

<<< We are using CR2032 coin cell. But cell is drain out in 30 hours only, ideally it should be much more.
Typically CR2032 cells have 250 mAh capacity.
Assuming 6 mA current your battery should last for 40 hours.

Before we start to talk about your code, a battery and a measurement issue has to be resolved.

Hi Tomasz,

I'm trying to download EnergyTrace Technology from Ti.com but page is not found.

Can I download it from anywhere else?

I suppose Tomasz means to buy a LaunchPad such as LAUNCHXL-CC1312R1 which has energy trace HW on it and use LAUNCHXL-CC1312R1 to do energy trace.

Viray,

do not click on an EnergyTrace link.
First of all, please tell me which LaunchPads with EnergyTrace you have.
You will find it quickly on a back sides of LP package boxes.

Hi,
We do not have any Launchpad with EnergyTrace.
We only have CC1310 Launchpads.
When measured with DMM, it is showing 1.06 mA during sleep period. So, that indicates that my device is not entering into the sleep.
Even I have tried to measure current for pinStandby example, it is also showing 0.812 mA.

Thanks

Hi,

weeks ago Viraj wrote:
current drain after sleep is 40uA and on transmit mode is upto 6mA.

Good idea to check pinStandby.
As I remember, TI examples leave unused pins in undefined states.
Put all unused pins into low/high states and check again.

When you test with the pinStanby example, have you done this with unmodified code? If so, how will a DMM handle that the LED is on half the time?

Hi Tomasz,

I have checked what you have suggested by changing unused pin to "input" and "pulled down" all of them. But there is no difference in current readings.

Let me know if anything else is required in configuration.
Thanks.

Turn LEDs off.
I may have a major contribution to current usage.

Hi,
We have measured when LEDs are turned OFF.
And if LED is turned ON current reads 3.5mA.

Thanks
Viraj

You need to get back to the s/w version when you had:
<<< current drain after sleep is 40uA and on transmit mode is upto 6mA.
Quality of your battery is in doubt. @6mA it should last for 40h.

Please verify how you have done the measurements:

Have you done the measurements on an unmodified CC1310 LP with unmodified pinStandby example? If so, do you see that the multimeter is alternating between x mA and 6 mA?

Have you verified that you are able to measure 1 uA (using a known good source) with the multimeter accurately?