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CC2538dk current consumption using Contiki

Hardy Bismark
Prodigy 30 points
Other Parts Discussed in Thread: CC2538

Hi,

I'm experimenting right now with the CC2538DK and the Thingsquare demo evaluating the mesh functionality.

But when I measured the current consumption of the CC2538EM over the jumper "VDD to EM", J503 on the SmartRF06 board, I measure around 26mA all the time. I also tried the Contiki cc2538dk-demo, but it is the same there. I have veryfied that the firmware runs into the lpm_enter(); instruction in contiki-main.c but anyway I never come below 25mA. Right now I run 9 nodes on battery and I don't want to change the batteries every few days.

I'm using Contiki 2.7, downloaded from Git last week. on the nodes I'm using the Thingsquare firmware kit-cc2538dk-20140130.bin.

Is there anything I can do to bring the average current down in the microampere range?

  • 0
    TI__Mastermind 27145 points

    Hi,

    It seems you might be measuring the current in active mode. You need put the CC2538 in PM1/PM2/PM3 modes to minimize the current drain and to save the battery.

    Please see CC2538 data sheet and CC2538 user guide (Power management chapter) for further details.

     

    Thanks,

    PM