ESP32 Forum

Any news for the low power implementation ?

I wish to ask a question about power consumption with WiFi and BLE turned off separately. when both BLE and WiFi turned off I have consumption around 20mA. when both turned ON consumption is 160mA. but I have same power consumption when only BLE turned ON (and wifi off) or WiFi turned ON (and BLE off). is there any explanation of above?

also I hope that BLE lower power modes will be supported soon..

ESP_Sprite wrote:FYI: The BT(LE) drivers in esp-idf as of now aren't optimized for power yet, so while the hardware should support low-power modes, there's no software to use them yet. We're working on getting the needed changes, however.

Has there been progress regarding BT-LE low-power modes?

When will BT-LE connectivity through deep sleep be possible?

Thank you

dave111 wrote:

ESP_Sprite wrote:FYI: The BT(LE) drivers in esp-idf as of now aren't optimized for power yet, so while the hardware should support low-power modes, there's no software to use them yet. We're working on getting the needed changes, however.

Has there been progress regarding BT-LE low-power modes?

When will BT-LE connectivity through deep sleep be possible?

Thank you

Hello,

A Bluetooth Low-Energy device without support for low-power modes? Is there really no new information you can share about this? I would very much like to better understand the situation.

Maybe such info was already shared. But I am unable to find it.

Thank you.

Agreed, quite puzzling: "A Bluetooth Low-Energy device without support for low-power modes?" ?????

I got a code working in BLE with external interrupts connected to an Android phone via MIT App Inventor 2 program, but the power consumption is over 170 mAh in normal mode, and putting the ESP-32 to sleep and waking up again takes couple of seconds per cycle. The chip gets hot and I am reluctant to enclose it in a project which may operate outdoors.

So been looking at the nrF5x, the BT-12, the HM-13, BlueDuino, BlueFruit, DA14580 instead.

fe7565 wrote:
So been looking at the nrF5x, the BT-12, the HM-13, BlueDuino, BlueFruit, DA14580 instead.

I'm sorry if my comment is not seen as constructive, just sharing my experience, no affiliation with Nordic: I've ended up using nRF52832 and mbed OS for the project I originally asked this question for. Quite a comfortable solution if you don't need the whole Wifi stack, only BLE.

Just checking in if the latest ESP-IDF has support for less power consumption during BTLE?

kind regards
Ian.

*Bump* Any progress on this Espressif? We'd really love to be able to transmit a beacon every few seconds while averaging < 100uA but this just isn't possible at the moment.

@Espressif I've been waiting for a year and you still haven't answered.

Yes, there's power saving in BLE mode now. See e.g. this issue for more discussion. Note that the ESP32 is not a chip specifically optimized for BLE use, so even with optimizations it may use more power than dedicated BLE chips.