ESP8266 HTTP client connection falis - arduino

Question

This demo code is working fine but mine does not.
It returns "HTTPC_ERROR_CONNECTION_REFUSED" (my debug work suggests that it fails to create a TCP connection)
The example code uses WiFiMulti but that is not the issue.
What am I missing ?
Please kindly assist.
Working Example:
/**
* BasicHTTPClient.ino
*
* Created on: 24.05.2015
*
*/
#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <ESP8266WiFiMulti.h>
#include <ESP8266HTTPClient.h>
#define USE_SERIAL Serial
ESP8266WiFiMulti WiFiMulti;
void setup() {
USE_SERIAL.begin(115200);
// USE_SERIAL.setDebugOutput(true);
USE_SERIAL.println();
USE_SERIAL.println();
USE_SERIAL.println();
for(uint8_t t = 4; t > 0; t--) {
USE_SERIAL.printf("[SETUP] WAIT %d...\n", t);
USE_SERIAL.flush();
delay(1000);
}
WiFi.mode(WIFI_STA);
WiFiMulti.addAP("SSID", "PASSWORD");
}
void loop() {
// wait for WiFi connection
if((WiFiMulti.run() == WL_CONNECTED)) {
HTTPClient http;
USE_SERIAL.print("[HTTP] begin...\n");
// configure traged server and url
//http.begin("https://192.168.1.12/test.html", "7a 9c f4 db 40 d3 62 5a 6e 21 bc 5c cc 66 c8 3e a1 45 59 38"); //HTTPS
http.begin("http://192.168.1.12/test.html"); //HTTP
USE_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
USE_SERIAL.printf("[HTTP] GET... code: %d\n", httpCode);
// file found at server
if(httpCode == HTTP_CODE_OK) {
String payload = http.getString();
USE_SERIAL.println(payload);
}
} else {
USE_SERIAL.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
}
http.end();
}
delay(10000);
}
My code:
#include <string>
#include <ESP8266HTTPClient.h>
#include <ESP8266WebServer.h>
//EEPROM
#include <EEPROM.h>
//Serial
#include <SoftwareSerial.h> // We need this even if we're not using a SoftwareSerial object
#include <SerialCommand.h>
//Timer
#include <Ticker.h>
//***************************************************
#include "generalDeclerations.h"
#include "serialSetup.h"
#include "EEPROMAnything.h"
#include "ioControl.h"
#include "webServer.h"
//***************************************************
void setup() {
Serial.begin(115200);
EEPROM.begin(100);
initIO();
checkFD(); //Factory default ?
initSerialSetup(); //Initelize serial setup interface
bootPause(); //give the user a chance to interupt using the serial interface
//***************************** Starting the flow from here
// loadEEPROM();
initConnection();
initWebServer();
ledControl(HB_LED_PIN, 0.5);
regData.attach(REG_DATA_INTERVAL, regData2DB);
}
void loop() {
webServer.handleClient();
SCmd.readSerial(); // We don't do much, just process serial commands
// collectData();
// regData();
if ( (wifiMode == WIFI_AP) && (millis() - apTimeStamp > WIFI_RETRY_TIME_MILI_SECONDS)) {
initConnection();
apTimeStamp = millis();
}
}
void regData2DB() {
if (wifiMode != WIFI_STA) {
Serial.println("no internet connection");
return;
}
if (WiFi.status() != WL_CONNECTED ) return;
// http.begin(msg); //HTTP
http.begin("http://google.com"); //HTTP
int httpCode = http.GET();
Serial.println(httpCode);
// http.returnError(httpCode);
// httpCode will be negative on error
if (httpCode > 0) {
Serial.print("got respond");
// HTTP header has been send and Server response header has been handled
// file found at server
if (httpCode == HTTP_CODE_OK) {
Serial.println("and it is a GOOD one !");
String payload = http.getString();
if (http.getString() == "ok") {
Serial.println(counter_in);
Serial.println(counter_out);
counter_in = 0;
counter_out = 0;
}
}
} else {
Serial.println("and it is a BAD one !");
Serial.println(counter_in);
Serial.println(counter_out);
// ledControl(WIFI_LED_PIN, 0.1); //need to return the toggle rate once ok
}
http.end();
}
void initConnection() {
loadEEPROM();
WiFi.disconnect(true); //disconect from any activity ==> Fresh Start
delay(3000);
if (strcmp(eeprom.ssid, "") == 0) {
//No SSID stored.. init as access point
Serial.println("No SSID found in eeprom Starting AP mode:");
WiFi.mode(WIFI_AP);
WiFi.softAP(AP_SSID, AP_PASS);
delay(5000);
Serial.print(WiFi.softAPIP());
apTimeStamp = millis();
wifiMode = WIFI_AP;
ledControl(WIFI_LED_PIN, 0.5);
} else {
Serial.print("Found SSID and PASS in eeprom, trying STA connect to: "); Serial.print(eeprom.ssid); Serial.print(" | "); Serial.println(eeprom.pass);
WiFi.mode(WIFI_STA);
WiFi.begin(eeprom.ssid, eeprom.pass);
delay(6000);
int i = 0;
while (WiFi.status() != WL_CONNECTED) {
Serial.print("Failed ==>");
if (i > 3) {
Serial.println("Starting AP mode:");
WiFi.mode(WIFI_AP);
WiFi.softAP(AP_SSID, AP_PASS);
apTimeStamp = millis();
wifiMode = WIFI_AP;
ledControl(WIFI_LED_PIN, 0.5);
return;
}
else {
Serial.println("Retrying..");
WiFi.mode(WIFI_STA);
WiFi.begin(eeprom.ssid, eeprom.pass);
delay(5000);
}
i++;
}
wifiMode = WIFI_STA;
Serial.print("Connected as STA:");
Serial.println(WiFi.localIP());
WiFi.setAutoReconnect(true);
ledControl(WIFI_LED_PIN, HIGH);
}
}

Answer 1

SOLVED.
I was calling the regData2DB() function by using timer...
When I called the regData2DB() function from main loop by using:
if ( (millis() - regDataTimeStamp) > DB_UPDATE_INTERVAL_MS) {
regData2DB();
regDataTimeStamp = millis();
}
It started to work.
No Idea what happened but it seems to be stable.. moving on :-)