Historia

Marius Vikhammer 04df1f3a42 CI: enable example builds for C3 Enables building C3 examples in CI. Fixes related warnings/errors and disables examples that cannot run.		2021-02-09 12:04:02 +08:00
..
image	Power consumption graphs were added to ulp and wifi power save examples	2020-09-17 13:20:09 +02:00
main	Merge branch 'bugfix/fix_wifi_interface_use' into 'master'	2021-01-25 12:18:27 +08:00
CMakeLists.txt	…
Makefile	Whitespace: Automated whitespace fixes (large commit)	2020-11-11 07:36:35 +00:00
README.md	CI: enable example builds for C3	2021-02-09 12:04:02 +08:00
sdkconfig.defaults	esp_wifi: light sleep optimization	2021-01-18 15:31:03 +08:00

README.md

Wifi Power Save Example

This example shows how to use power save mode of wifi.

Power save mode only works in station mode. If the modem sleep mode is enabled, station will switch between active and sleep state periodically after connecting to AP successfully. In sleep state, RF, PHY and BB are turned off in order to reduce power consumption. Station can keep connection with AP in modem sleep mode.

No power save: This is default mode. And the esp32 will work with full power.
Minimum modem sleep: In minimum modem sleep mode, station wakes up every DTIM to receive beacon. Broadcast data will not be lost because it is transmitted after DTIM. However, it can not save much more power if DTIM is short for DTIM is determined by AP.
Maximum modem sleep: In maximum modem sleep mode, station wakes up every listen interval to receive beacon. Broadcast data may be lost because station may be in sleep state at DTIM time. If listen interval is longer, more power is saved but broadcast data is more easy to lose.
others: not supported yet.

Typical current consumption with management enabled

Typical current consumption with management disabled

Note that current consumption and average current are higher when disabled.