Esp i HC-SR04

[shimano73]

Próbowałem dzis uruchomić czujnik odległości na ESP , no i się nie powiodło. Prawdopodobnie uwaliłem esp-07, HC-SR04 działa przy zasilaniu 5V ale wyczytałem że niektóre działają również na 3V. Tak też go zasiliłem z jednego zasilania esp i hc z 3,3V. Program się wczytał, ale moduł nie łączy się z wi-fi, nawet gdy wrałem inny program do którego jestem pewien że dzialać powinien, to nie działa. Czy jest możliwe że pomimo zailania z 3V sygnał wyjściowy z czujnika ma logikę 5V ?

[slawek]

Niemożliwe, prędzej podejrzewałbym stany nieustalone z powodu zbyt niskiego napięcia na module HC...

[Lechu_]

Są już gdzieś binarki na esp do wgrania dla tego czujnika?

[Elektryk Szczecin]

Nie wiem gdzie HC-SR04 wykorzystać nie sprawdzałem tego kodu (ktoś przerobi na suple i bin)

Kod: Zaznacz cały

#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <ESP8266WiFiMulti.h>
#include <ESP8266HTTPClient.h>

// utlrasonic pinout
#define ULTRASONIC_TRIG_PIN     5   // pin TRIG to D1
#define ULTRASONIC_ECHO_PIN     4   // pin ECHO to D2

// user config: TODO
const char* wifi_ssid = "....................";             // SSID
const char* wifi_password = "....................";         // WIFI
const char* apiKeyIn = "..................";      // API KEY IN
const unsigned int writeInterval = 25000; // write interval (in ms)

// ASKSENSORS config.
String host = "http://api.asksensors.com";         // ASKSENSORS host name

ESP8266WiFiMulti WiFiMulti;

void setup() {

  Serial.begin(115200);
  Serial.println("*****************************************************");
  Serial.println("********** Program Start : Connect Ultrasonic HC-SR04 + ESP8266 to AskSensors over HTTP");
  Serial.println("Wait for WiFi... ");
  Serial.print("********** connecting to WIFI : ");
  Serial.println(wifi_ssid);
  WiFi.begin(wifi_ssid, wifi_password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("-> WiFi connected");
  Serial.println("-> IP address: ");
  Serial.println(WiFi.localIP());
  // ultraonic setup 
  pinMode(ULTRASONIC_TRIG_PIN, OUTPUT);
  pinMode(ULTRASONIC_ECHO_PIN, INPUT);
  
}


void loop() {
    // wait for WiFi connection
  if (WiFi.status() == WL_CONNECTED){

        HTTPClient http;

        Serial.print("[HTTP] begin...\n");

        long duration, distance;
        digitalWrite(ULTRASONIC_TRIG_PIN, LOW);  
        delayMicroseconds(2); 
        
        digitalWrite(ULTRASONIC_TRIG_PIN, HIGH);
        delayMicroseconds(10); 
        
        digitalWrite(ULTRASONIC_TRIG_PIN, LOW);
        duration = pulseIn(ULTRASONIC_ECHO_PIN, HIGH);
        distance = (duration/2) / 29.1;
        Serial.print("********** Ultrasonic Distance: ");
        Serial.print(distance);
        Serial.println(" cm");
  
        // Create a URL for the request
        String url = "";
        url += host;
        url += "/write/";
        url += apiKeyIn;
        url += "?module1=";
        url += distance;
        
        Serial.print("********** requesting URL: ");
        Serial.println(url);
        http.begin(url); //HTTP
        
        Serial.println("> Request sent to ASKSENSORS");

        Serial.print("[HTTP] GET...\n");
        // start connection and send HTTP header
        int httpCode = http.GET();

        // httpCode will be negative on error
        if(httpCode > 0) {
            // HTTP header has been send and Server response header has been handled
            Serial.printf("[HTTP] GET... code: %d\n", httpCode);

            // file found at server
            if(httpCode == HTTP_CODE_OK) {
                String payload = http.getString();
                Serial.println(payload);
            }
        } else {
            Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
        }

        http.end();

        Serial.println("********** End ");
        Serial.println("*****************************************************");
    }

    delay(writeInterval);
}

[Elektryk Szczecin]

Od niezastąpionego kolegi elmaya nowa biblioteka SuplaDevice_HC_SR04
gdzie HC_SR04 wykorzystać

Kod: Zaznacz cały

/*
Copyright (C) AC SOFTWARE SP. Z O.O.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

#include <SPI.h>
#include <SuplaDevice.h>

/*
 * This example requires Dallas Temperature Control library installed. 
 * https://github.com/milesburton/Arduino-Temperature-Control-Library
 */
// Add include to HC_SR04 sensor
#include <supla/sensor/HC_SR04.h>


// ESP8266 based board:
 #include <supla/network/esp_wifi.h>
 Supla::ESPWifi wifi("your_wifi_ssid", "your_wifi_password");


void setup() {

  Serial.begin(115200);

  // Replace the falowing GUID with value that you can retrieve from https://www.supla.org/arduino/get-guid
  char GUID[SUPLA_GUID_SIZE] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};

  // Replace the following AUTHKEY with value that you can retrieve from: https://www.supla.org/arduino/get-authkey
  char AUTHKEY[SUPLA_AUTHKEY_SIZE] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};

  /*
   * Having your device already registered at cloud.supla.org,
   * you want to change CHANNEL sequence or remove any of them,
   * then you must also remove the device itself from cloud.supla.org.
   * Otherwise you will get "Channel conflict!" error.
   */

  new Supla::Sensor::HC_SR04(5,4);//(trigPin, echoPin)


  /*
   * SuplaDevice Initialization.
   * Server address, LocationID and LocationPassword are available at https://cloud.supla.org 
   * If you do not have an account, you can create it at https://cloud.supla.org/account/create
   * SUPLA and SUPLA CLOUD are free of charge
   * 
   */

  SuplaDevice.begin(GUID,              // Global Unique Identifier 
                    "svr1.supla.org",  // SUPLA server address
                    "email@address",   // Email address used to login to Supla Cloud
                    AUTHKEY);          // Authorization key
    
}

void loop() {
  SuplaDevice.iterate();
}