bioncellphone.blogg.se - Esp32 deepsleep current

#ESP32 DEEPSLEEP CURRENT SERIES#

So it directly converts the units correctly and displays the current that flows through the resistor. Hence, I set the oscilloscope to 1:0.01 probes and the channels unit to A(mpere). the resistor is shorted during the ESP32's startup to allow it to draw enough current during startup.

#ESP32 DEEPSLEEP CURRENT SERIES#

measuring the voltage drop over a 1 kOhm resistor put in series with the ESP32s GND connection using a oscilloscope.

So the ULP seemed not to be the issue.ĮSP32 High Power Consumption in Deep Sleep Mode

Then I reduced the program to not start the ULP and instead use only RTC-Timer wakeup using esp_sleep_enable_timer_wakeup(1000000*600) before sending it to deep sleep.

I tried to call rtc_gpio_isolate(GPIO_NUM_12) and rtc_gpio_isolate(GPIO_NUM_15) which did not resolve the issue.

So, the ULP should halt almost instantly and wait for the next RTC wakeup after 1 second. The ULP program is 5 instructions long (no loops) and finally calls 'HALT'.

The program basically starts a ULP program, that has wakeup-period of 1 second set and then goes to deep sleep. I use an external 3.3V-linear regulator and I'm measuring the current that flows out of this regulator. I'm using a very minimalistic carrier board ( schematic) together with a WROOM32 ESP32-module, which has only 2 pull-up resistors for the 2 needed switches (RESET / GPIO0). However, the best I can achieve is about ~77 ♚ of current consumption. I tried to reduce the current consumption of a ESP32 in deep sleep with the ULP enabled.