Light sleep current consumption

bobftl
Posts: 2
Joined: Tue Aug 01, 2017 9:56 pm

Light sleep current consumption

Postby bobftl » Wed Aug 02, 2017 6:24 pm

I'm troubleshooting some power problems, and have a few questions.

Table 6 of the June 28 ESP_WROOM-32 Datasheet indicates the module consumes 0.8mA in light sleep mode. What system (hw/fw) configuration did the Espressif team use to obtain the 0.8mA measurement ?

What are other people seeing for the wroom32 light sleep current ?

The board I'm using consumes about 35mA during light sleep, and 500uA during deep sleep.

I'm running the v2.1/rc1 code. I added a vxTaskDelay(1000*configTickRateHZ) into the deep sleep example code, and the current does decrease fom ~50mA to 35mA during this delay (which should trigger light sleep), but I expected a much lower current.

Thanks!

ESP_Sprite
Posts: 9043
Joined: Thu Nov 26, 2015 4:08 am

Re: Light sleep current consumption

Postby ESP_Sprite » Thu Aug 03, 2017 7:13 am

Deep sleep is not in esp-idf yet; what you're seeing is the effects of just the WAITI Xtensa instruction. We expect light sleep to go in in 3.0.

bobftl
Posts: 2
Joined: Tue Aug 01, 2017 9:56 pm

Re: Light sleep current consumption

Postby bobftl » Thu Aug 03, 2017 10:09 pm

Thanks for the quick reply. What is the estimated release date for esp-idf 3.0 ?

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