send_http_temp.c

// Importer les bibliothèques
#include <OneWire.h>
#include <DallasTemperature.h>
#include <ESP8266WiFi.h>
#include <ESP8266HTTPClient.h>
#include <ArduinoJson.h>

#define ONE_WIRE_BUS 4

// Initialisation de oneWire
OneWire oneWire(ONE_WIRE_BUS);
/* Initialisation du sensor permettant la 
lecture de températures */
DallasTemperature sensors(&oneWire);

const char* ssid     = "xxxxx";
const char* password = "xxxxx";
const char* host = "http://xxxx";
String API_HOST = "http://xxxx";
String API_PATH = "/api/xxx";


void setup() {

 // Comme nous l'avons vu dans le précédent article les sept
 // lignes ci-dessous permettent de configurer le port série
 // et la Led intégrée.
 Serial.begin(115200);
 sensors.begin();
 pinMode(LED_BUILTIN, OUTPUT);
 delay(1000);
 Serial.begin(115200);
 Serial.println("");
 Serial.print("Connecting");
 
 
 WiFi.mode(WIFI_OFF);        //Prevents reconnection issue (taking too long to connect)
 delay(1000);
 WiFi.mode(WIFI_STA);        //This line hides the viewing of ESP as wifi hotspot

 WiFi.begin(ssid, password);     //Connect to your WiFi router

 // Wait for connection
 while (WiFi.status() != WL_CONNECTED) {
  delay(500);
  Serial.print(".");
 }

 //If connection successful show IP address in serial monitor
 Serial.println("");
 Serial.print("Connected to ");
 Serial.println(ssid);
 Serial.print("IP address: ");
 Serial.println(WiFi.localIP()); 

 }

// On retrouve la même fonction de lecteur de température
// que dans l'article précédent
float getTemperature(){
  float temperature = -255;
  Serial.println("Demande de temperature");
  sensors.requestTemperatures();
  Serial.print("La temperature est de: ");
  temperature = sensors.getTempCByIndex(0);
  return temperature;
}

String serialize(float temp)
{
  String output;
  StaticJsonBuffer<500> jsonBuffer;

  // Create the root object
  JsonObject& root = jsonBuffer.createObject();
  root["temperature"] = String(getTemperature());
  root.printTo(output);
  root.prettyPrintTo(Serial);
  return output;
}

void sendApi(float temp)
{
  HTTPClient http;
  String data = serialize(temp);
  int httpCode = 0;
  http.begin(API_HOST+API_PATH);
  http.addHeader("Content-Type", "application/json");
  httpCode = http.POST(data);
  Serial.println(httpCode);   //Print HTTP return code
  http.end();  //Close connection
  
  blink();
}

void blink()
{
  digitalWrite(BUILTIN_LED, LOW);
  delay(10);
  digitalWrite(BUILTIN_LED, HIGH);
}

void loop() {
  int httpCode = 0;
  float temperature = getTemperature();

  sendApi(temperature);
  
  delay(300000);  //Post Data at every 5 min

}

bonjour,
j'ai deux erreurs lors de la compilation avec arduino 1.8.12

inclut < ArduinoJson.h > c'est #include <Arduino_JSON.h>

et avec la ligne : StaticJsonBuffer < 500 > jsonBuffer;

voilà le cr des erreurs
WEMOS_Temp_ESP32:74:3: error: 'StaticJsonBuffer' was not declared in this scope

WEMOS_Temp_ESP32:74:28: error: 'jsonBuffer' was not declared in this scope

WEMOS_Temp_ESP32:77:3: error: 'JsonObject' was not declared in this scope

WEMOS_Temp_ESP32:77:15: error: 'root' was not declared in this scope

quelles sont les corrections pour la deuxième erreur

cordialement