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What is Deep sleep mode in ESP32?
ESP32 Deep Sleep. In deep sleep mode, the CPU, most of the RAM and all the digital peripherals are powered off. Along with the CPU, the main memory of the chip is also disabled. So, everything stored in that memory is wiped out and cannot be accessed. However, the RTC memory is kept powered on.
How do you use deep sleep on ESP32?
The ESP32 goes into deep sleep mode. You can wake it up by touching the wire connected to Touch Pin 3. When you touch the pin, the ESP32 displays on the Serial Monitor: the boot number, the wake up cause, and in which GPIO touch was detected.
Is ESP32 low power?
The power consumption of the Firebeetle ESP32 board in Deep-Sleep mode is extremely low. It needs around 1.44 mΑhs per day if powered by 4 AA rechargeable batteries.
What is ESP deep sleep?
To put the ESP8266 in deep sleep mode, use ESP. deepSleep(uS) and pass as argument sleep time in microseconds. GPIO 16 must be connected to reset (RST) pin so the ESP8266 is able to wake up. To put the ESP8266 in deep sleep mode for an indefinite period of time use ESP.
How to put the ESP32 into deep sleep?
As you can see the code is very simple. In order to put the ESP32 into Deep-Sleep mode, all we need is two lines of code. We enable the timer with the esp_sleep_enable_timer_wakeup function, we enter the time to sleep in seconds, and then we call the esp_deep_sleep_start function.
How long will firebeetle ESP32 last in deep sleep mode?
The power consumption of the Firebeetle ESP32 board in Deep-Sleep mode is extremely low. It needs around 1.44 mΑhs per day if powered by 4 AA rechargeable batteries. So, in theory, this power bank which has a capacity of 2.500mAhs can power the board for almost 5 years if we put it in Deep Sleep mode!
Which is module still works in deep sleep mode?
The only module that still works when in deep-sleep mode is the RTC module, the ultra-low-power co-processor, and its memory! So, if we save the data we want to survive the Deep-Sleep mode into the RTC memory they will be intact when we wake the chip back up.
What are the features of the ESP32 chip?
The ESP32 chip is a fantastic new chip with great features. It offers a lot of processing power, two 32 bit cores, a lot of memory, Bluetooth and WiFi in a small and easy to use chip. One of the most interesting things about the ESP32 chip is that it offers a low-power deep sleep mode which is very easy to use. Let’s see how to use it.