Wakeup from deep sleep fails

[tobiasebsen]

Hi

I have a problem with external wakup (ext1) where the Esp32 (rarely) does not wake up. It has happened two times - both times I had to pull the reset pin in order to wake it.

Anyone knows what might be wrong?

Here is my code:

Code: Select all

#include <driver/rtc_io.h>
#include <WiFi.h>
#include <WiFiUdp.h>

#define PIN_LED       5

const char* ssid     = "xxxx";
const char* password = "xxxx";

IPAddress local_IP(192, 168, 0, 200);
IPAddress gateway(192, 168, 0, 1);
IPAddress subnet(255, 255, 255, 0);

const char * udpAddress = "192.168.0.255";
const int udpPort = 5000;

WiFiUDP udp;

#define BUTTON_PIN_BITMASK (1 << 4) | (1 << 2)

RTC_DATA_ATTR bool gulvShow = false;
RTC_DATA_ATTR bool loftShow = false;
bool gulvActivated = false;
bool loftActivated = false;

void setup(){

  pinMode(2, INPUT);
  pinMode(4, INPUT);

  if (digitalRead(2) == HIGH) {
    gulvShow = !gulvShow;
    gulvActivated = true;
  }
  if (digitalRead(4) == HIGH) {
    loftShow = !loftShow;
    loftActivated = true;
  }

  esp_sleep_enable_ext1_wakeup(BUTTON_PIN_BITMASK, ESP_EXT1_WAKEUP_ANY_HIGH);

  pinMode(PIN_LED, OUTPUT);
  digitalWrite(PIN_LED, HIGH);

  Serial.begin(115200);
  delay(1000); //Take some time to open up the Serial Monitor


  if (!WiFi.config(local_IP, gateway, subnet)) {
    Serial.println("STA Failed to configure");
  }

  Serial.print("Connecting to ");
  Serial.println(ssid);

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");

    if (millis() > 10000) {
        Serial.print("timeout.");
        Serial.flush();
        esp_deep_sleep_start();
    }
  }

  Serial.println("");
  Serial.println("WiFi connected!");
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());
  Serial.print("ESP Mac Address: ");
  Serial.println(WiFi.macAddress());
  Serial.print("Subnet Mask: ");
  Serial.println(WiFi.subnetMask());
  Serial.print("Gateway IP: ");
  Serial.println(WiFi.gatewayIP());

  if (gulvActivated) {
    for (int i=0; i<3; i++) {
      udp.beginPacket(udpAddress,udpPort);
      udp.print(gulvShow ? "SHOW_GULV" : "HIDE_GULV");
      udp.endPacket();
    }
    Serial.println(gulvShow ? "SHOW_GULV" : "HIDE_GULV");
  }
  if (loftActivated) {
    for (int i=0; i<3; i++) {
      udp.beginPacket(udpAddress,udpPort);
      udp.print(loftShow ? "SHOW_LOFT" : "HIDE_LOFT");
      udp.endPacket();
    }
    Serial.println(loftShow ? "SHOW_LOFT" : "HIDE_LOFT");
  }

  delay(1000);

  //If you were to use ext1, you would use it like
  //esp_sleep_enable_ext1_wakeup(BUTTON_PIN_BITMASK,ESP_EXT1_WAKEUP_ANY_HIGH);

  //Go to sleep now
  Serial.println("Going to sleep now");
  Serial.flush();
  esp_deep_sleep_start();
  Serial.println("This will never be printed");
}

void loop(){
  //This is not going to be called
}