ESP-IDF v3.2-dev-728-ge54f3d9
Arduino-ESP is the latest one (4.9.2018) from here https://github.com/espressif/arduino-esp32.git (not sure how to get the version number)

OK, after enabling "C++ exception handling" in menuconfig the following error appears when compiling the hello_world_main.c example: Python requirements from /Users/Laetterman/esp/esp-idf/requirements.txt are satisfied. CXX build/arduino/libraries/SD_MMC/src//SD_MMC.o /Users/Laetterman/esp/hello_wor...

I installed the master branch of esp-idf, and could enable the power management in menuconfig. However the concept of using Arduino es ESP component is beyond my (limited) abilities... following these instructions https://github.com/espressif/arduino-esp32/blob/master/docs/esp-idf_component.md there...

Thats great. Is there any chance to activate DFS via Arduino IDE or do I need to install IDF first and use menuconfig as described here https://github.com/espressif/esp-iot-solution/blob/master/documents/DFS_and_light_sleep/DFS_test_manual_en.md ? esp_pm_config_esp32_t pm_config = { .max_cpu_freq =R...

Thank you, thats great!
Please, could you give a rough estimation on when DFS @20Mhz will be available?

Will it support to boot with the reduced speed too, or will the first about 200ms booting sequence still run with 240Mhz (thus consuming about 60mA)?

Hi,

using we can change the frequency from 240Mhz to 160Mhz, 80Mhz or 2Mhz.
Is it possible to change the frequency to 10Mhz or 20Mhz too?

Reason why I'm asking is trying to bring the power consumption down in active mode.

Thanks!

Got it finally working after changing the SPI pin mapping in "pins_arduino.h" to pins with rtc functionality (https://pcbreflux.blogspot.com/2017/02/ ... ample.html).

I think we could close this topic. Thanks for your input.

OK when measuring the voltage level with a multimeter one can see the hold-function during deep-sleep works fine for all pins but pin 18, 19 & 23... these are the SPI pins! So the question now is if it is possible to change the pin mapping in the Arduino world, or is there any other reason why the S...

Thank you! But adding the function for all used GPIOs numbers (i.e. gpio_hold_en(GPIO_NUM_25); for GPIO nbr 25; I am using 15, 18, 19, 23, 25, 27, 33) prior setting the ESP to deep sleep does still not change the current consumption. :roll: When adding external resistors to the ESP GPIO outputs the ...

OK here more results after trying different pinModes in combination with two deep sleeping SPI connected devices: Power-On - 500µA SPI.begin() - 160µA (OK) UC+BMA250.deepSleep() - 5µm (OK) SPI.end() - 500µA (NOK) pinMode(pin_xy, INPUT_PULLUP) - 5µA (OK) pinMode(pin_xy, OUTPUT) - 500µA (OK) pinMode(p...