println( "Touch detected on GPIO 12") break Ĭase 6 : Serial. println( "Touch detected on GPIO 13") break Ĭase 5 : Serial.
println( "Touch detected on GPIO 15") break Ĭase 4 : Serial. println( "Touch detected on GPIO 2") break Ĭase 3 : Serial. println( "Touch detected on GPIO 0") break Ĭase 2 : Serial. println( "Touch detected on GPIO 4") break Ĭase 1 : Serial. TouchPin = esp_sleep_get_touchpad_wakeup_status() Ĭase 0 : Serial. Method to print the touchpad by which ESP32 #define Threshold 40 /* Greater the value, more the sensitivity */
#Deepsleep alarm clock serial#
The ESP32 wakes up every 5 seconds, prints the wake up reason and bootCount on the serial monitor and goes into deep sleep again. Once the sketch is uploaded, open your serial monitor, set the baud rate to 115200 bps. Sleep was started, it will sleep forever unless hardware In the case that no wake up sources were provided but deep Peripherals state in deep sleep, we can now start going to Now that we have setup a wake cause and if needed setup the
*/ //esp_deep_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_OFF) //Serial.println("Configured all RTC Peripherals to be powered down in sleep") /* The line below turns off all RTC peripherals in deep sleep.
#Deepsleep alarm clock how to#
Left the line commented as an example of how to configure peripherals. Not needed by the wakeup source, but if you want to be a poweruser Next we decide what all peripherals to shut down/keep onīy default, ESP32 will automatically power down the peripherals println( "Setup ESP32 to sleep for every " + String(TIME_TO_SLEEP) + */ esp_sleep_enable_timer_wakeup(TIME_TO_SLEEP * uS_TO_S_FACTOR) We set our ESP32 to wake up every 5 seconds Print the wakeup reason for ESP32 print_wakeup_reason() println( "Boot number: " + String(bootCount)) printf( "Wakeup was not caused by deep sleep: %d\n",wakeup_reason) break ĭelay( 1000) //Take some time to open up the Serial Monitor //Increment boot number and print it every reboot println( "Wakeup caused by ULP program") break ĭefault : Serial. println( "Wakeup caused by touchpad") break Ĭase ESP_SLEEP_WAKEUP_ULP : Serial. println( "Wakeup caused by timer") break Ĭase ESP_SLEEP_WAKEUP_TOUCHPAD : Serial. println( "Wakeup caused by external signal using RTC_CNTL") break Ĭase ESP_SLEEP_WAKEUP_TIMER : Serial. println( "Wakeup caused by external signal using RTC_IO") break Ĭase ESP_SLEEP_WAKEUP_EXT1 : Serial. Wakeup_reason = esp_sleep_get_wakeup_cause() Ĭase ESP_SLEEP_WAKEUP_EXT0 : Serial. Method to print the reason by which ESP32 #define TIME_TO_SLEEP 5 /* Time ESP32 will go to sleep (in seconds) */ #define uS_TO_S_FACTOR 1000000ULL /* Conversion factor for micro seconds to seconds */
For example, RTC_DATA_ATTR int myVar = 0 Īfter coming out of deep sleep the chip restarts with a reset and starts program execution from the beginning. If you want to use the data after reboot, store it in RTC memory by defining a global variable with RTC_DATA_ATTR attribute.
#Deepsleep alarm clock Bluetooth#
This is why the chip stores Wi-Fi and Bluetooth connection data in RTC memory before entering deep sleep. As a result everything stored in that memory is erased and cannot be accessed.īecause RTC memory is kept on, its contents are preserved even during deep sleep and can be retrieved after the chip is woken up. This is useful for designing applications where the CPU needs to be woken by an external event, or timer, or a combination of both, while maintaining minimal power consumption.Īlong with the CPU, the main memory of the chip is also disabled. This sleep pattern is known as the ULP sensor-monitored pattern. During deep sleep mode the main CPU is shut down, while the UltraLowPower (ULP) Coprocessor can take sensor readings and wake up the CPU whenever necessary.
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