Deep Sleep with External Wake Up

#1

I need some help! I’m out of ideas. I’m trying to put a WiFi LoRa 32(v3) into deep sleep and wake it up using either of two pins. Print one of two messages depending on which pin executed the wake-up call. The following code results in the output in the attached image. I don’t know how to fix the “SHA-256 comparison failed:” or “E (1015) sleep: Not an RTC IO: GPIO33” errors. Latest searched has shown that pins 33 and 34 are both available as external wake-up pins! Any help would be appreciated. Thanks.
Output%20errors|690x326

//Deep Sleep with External Wake Up
#include "Arduino.h"
#include "LoRaWan_APP.h"

#define WAKEUP_PIN_1 GPIO_NUM_33
#define WAKEUP_PIN_2 GPIO_NUM_34
#define BUTTON_PIN_BITMASK 0x600000000 // 2^33+2^34 in hex

void setup(){
  Serial.begin(115200);
  delay(1000); //Take some time to open up the Serial Monitor
  esp_sleep_enable_ext1_wakeup(BUTTON_PIN_BITMASK,ESP_EXT1_WAKEUP_ANY_HIGH);
  pinMode(GPIO_NUM_33, INPUT_PULLUP);
  pinMode(GPIO_NUM_34, INPUT_PULLUP);
}

void loop(){
  if (digitalRead(GPIO_NUM_33) == LOW && digitalRead(GPIO_NUM_34) == LOW){   
  esp_deep_sleep_start();
  }
  if (digitalRead(GPIO_NUM_33) == HIGH){
  Serial.println("Message #1...");
  }
  if (digitalRead(GPIO_NUM_34) == HIGH){
  Serial.println("Message #2...");
  }
}
#2

Don’t worry about the SHA-256 error. I don’t know what this is, maybe Heltec will fix that at some point, but it does not appear to have any bearing on anything—I get that message every time I compile code for the WiFi LoRa 32 V3 board.

As far as your wakeup pins go, the error message is telling you that GPIO33 and GPIO34 are not RTC GPIOs, which they need to be to be alive when the processor is asleep. A quick look at the ESP32-S3 Series Datasheet


indicates that the RTC_GPIOs are GPIO0…GPIO21.

#3

Thanks for your help, information, and timely response!