ESP8266 Community Forum

- Tue Sep 19, 2017 12:20 pm #70111 Hi,
I have a ESP8266 D1 mini connected with a hc-sr4 for distance measurement to send periodicaly to my domoticz api.
In continues with usb connected all is OK but i want use a battery (cr2032) and then use the deep sleep mode for e.g 60 minutes.

When i try to use the deep sleep, my ESP8266 goes well in deep sleep, but when he must wake, he print juste 4 characters and that is all.

I don't understand.

Hardware connection seems ok because i got the measure updated in my domoticz.
Pin D0 and RST connected together

Anyone can help me please ??

Thanks

Here is the "com output" log :
--------------------------------------------

Code: Select all4U⸮⸮⸮⸮start
Setup start bis
Attente connexion Wifi
.
Connected to WiFi-2.4-7C5F
IP address: 192.168.1.250
Domoticz connecting to 192.168.1.254
Requesting URL: /json.htm?type=command&param=udevice&idx=49&nvalue=0&svalue=8.18
closing connection
 : ESP8266 goes to Deep Sleep for 30000000
⸮HpY4

Here is the code:
-------------------------

Code: Select all/*
 *  Distance measurement with HC-SR04 ultrasonic sensor and Wemos D1 Mini, a web-based server
 *  by author Irwan
 *  published on www.likecircuit.com
 *  version 1.0
 */
 
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266HTTPClient.h>
#include <ESP8266WebServer.h>

const char* ssid = "WiFi-2.4-7C5F";
const char* password = "xxx my password";
IPAddress ip(192, 168, 1, xxx);
IPAddress gateway(192, 168, 1, 1);
IPAddress subnet(255, 255, 255, 0);

// defines pins numbers trigger and echo
const int trigPin = 2;    //Trig - D4 - Physical_pin=17 / NodeMCU=4 / Arduino=
const int echoPin = 0;   //Echo - D3 - Physical_pin=18 / NodeMCU=3 / Arduino=0
const int TimeSleepS = 30;  // Nombre de secondes mode veille Deep Sleep

// defines variables
long duration;
float distance;
float Mdistance;

// Domoticz variables
const char* host = "192.168.1.xxx";
const int  port = 8081;
HTTPClient http;

void setup(void){
  pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
  pinMode(echoPin, INPUT); // Sets the echoPin as an Input
  // Connect D0 to RST to wake up 
  pinMode(D0, WAKEUP_PULLUP); 
 
  Serial.begin(9600);
  Serial.setTimeout(2000);
  // Wait for serial to initialize.
  while(!Serial) { }

  Serial.println("Setup start");
  Serial.println("Setup start bis");
  WiFi.config(ip,gateway,subnet);
  WiFi.begin(ssid, password);
  Serial.println("Attente connexion Wifi");

  // Wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("Connected to ");
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());

  distanceData();

  String url = "/json.htm?type=command&param=udevice&idx=49&nvalue=0&svalue=";
  url += String(distance);
 
  sendToDomoticz(url);

  delay(500);

  Serial.print(" : ESP8266 goes to Deep Sleep for ");
  Serial.println(TimeSleepS * 1000000);
  ESP.deepSleep(TimeSleepS * 1000000);

  delay(2000);
}

void loop(void){
}

void distanceData(){
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
 
  // Sets the trigPin on HIGH state for 10 micro seconds
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
 
  // Reads the echoPin, returns the sound wave travel time in microseconds
  duration = pulseIn(echoPin, HIGH);
 
  // Calculating the distance
  distance= (duration*0.034)/2;
}

void sendToDomoticz(String url){
  Serial.print("Domoticz connecting to ");
  Serial.println(host);
  Serial.print("Requesting URL: ");
  Serial.println(url);
  http.begin(host,port,url);
  int httpCode = http.GET();
    if (httpCode) {
      if (httpCode == 200) {
        String payload = http.getString();
        Serial.println("Domoticz response ");
        Serial.println(payload);
      }
    }
  Serial.println("closing connection");
  http.end();
}


- Wed Sep 20, 2017 9:42 am #70145 A CR2032 battery could not deliver enough power to an ESP ...

- Sun Oct 08, 2017 4:40 am #70709 Thank you for your response

For now my try is without any battery, just connected to the USB of my PC.

Therefore the problem comes from elsewhere