Archived Forum

Sending to the server emoncms.org with AT commands:

AT+CIPSTART="TCP","80.243.190.58",80
CONNECT

OK
AT+CIPSEND=90
> GET /emoncms/input/post.json?json={power:210}&apikey=5f95184d8faf*-*-*-*-*-*-0fd9aad868 HTTP/1.0\r\nbusy s...

SEND OK

+IPD,2:ok
OK
CLOSED

The Arduino code (correct version):

#include <SoftwareSerial.h>
#include <OneWire.h>
#include <DallasTemperature.h>

#define SSID "xxx"
#define PASS "xxx"
#define MODULE_ID "ESP-01"
#define ONE_WIRE_BUS A2
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

//*-- Hardware Serial
#define _baudrate 115200

//*-- Software Serial
//
#define _rxpin      2
#define _txpin      4
SoftwareSerial debug( _rxpin, _txpin ); // RX, TX

#define IP "80.243.190.58" // emonsms
//#define IP "api.thingspeak.com"
String GET = "GET /emoncms/input/post.json?apikey=5f95-x-x-x-x-x-x-x-x-ad868&json={boiler:";

void setup()
{
  Serial.begin(_baudrate);
  debug.begin( _baudrate );
  sensors.begin();
  Serial.println("AT");
  delay(5000);
  if(Serial.find("OK")){
    connectWiFi();
    debug.println("prisijungta");
  }
}

void loop(){
  sensors.requestTemperatures();
  float tempC = sensors.getTempCByIndex(0);
//  tempC = DallasTemperature::toFahrenheit(tempC);
debug.println(tempC);
  char buffer[10];
  String tempF = dtostrf(tempC, 4, 1, buffer);
  updateTemp(tempF);
  delay(10000);
}

void updateTemp(String tenmpF){
  String cmd = "AT+CIPSTART=\"TCP\",\"";
  cmd += IP;
  cmd += "\",80";
  debug.println(cmd);
  Serial.println(cmd);
  delay(2000);
  if(Serial.find("Error")){
    return;
  }
  cmd = GET;
  cmd += tenmpF;
  cmd += "}\r\n";
  Serial.print("AT+CIPSEND=");
  Serial.println(cmd.length());
  debug.println("AT+CIPSEND=");
  debug.println(cmd.length());
  if(Serial.find(">")){
    Serial.print(cmd);
    debug.println(cmd);
  }else{
    Serial.println("AT+CIPCLOSE");
  }
}

 
boolean connectWiFi(){
  Serial.println("AT+CWMODE=1");
  delay(2000);
  String cmd="AT+CWJAP=\"";
  cmd+=SSID;
  cmd+="\",\"";
  cmd+=PASS;
  cmd+="\"";
  Serial.println(cmd);
  delay(5000);
  if(Serial.find("OK")){
    debug.println("OK");
    return true;
  }else{
    return false;
  }
}

Hi, 

do I understand correctly, you solved it and that code you shared is working now? If so, let me to ask you two questions to ensure myself, I understand it:

1) This code is for to be uploaded directly into ESP8266?

2) If so, HW serial is used for to send data to WiFi and SW serial for debug?

Or am I completely wrong and this code is for Arduino connected via HW serial to ESP module?

Radek

1. - No!

2. - Yes, this code for Arduino connected via HW serial to ESP module.

Thanks, I got it in the meantime. I modified your code slightly and now it sends data measured but Arduino Due directly via WiFi into my Emoncms dataserver, It eliminates completely Raspi and Emonhub from landscape. Thats really a great piece of hardware !

Hi Rbreuss,

Could you share your sketch?

Thanks

Sure, just give me a short time to remove unused rows and to some comments to used rows. Now it looks too messy. But Im surprised, how easy it works.

Radek 

So here is that sketch promised. It works on Arduino Due with ESP8266 (ESP01) powered from this Arduino (ATTENTION - powered from 3,3V pin !!!) and connected to Serial2 TX/RX. To get it working, ESP01 pin CH_PD has to be at high state (connected to 3,3V). You have to write there your WiFi SSID and passwd, your domain with emoncms (emoncms is installed in domain/emoncms folder) and you have to fill in your RW apikey. And when you connect real DS18B20 sensors, you have to comment out that hardwired temperature value at the end of sketch. Good luck and let me know your feedback.

Radek

I am a little bit stuck and I could REALLY use some help. So my friend and I are trying to send data through a server to a database (ESP8266 + Arduino, Apache Server and Mysql Database). When we send data, it says “send ok” and after that it says connection timeout. On apache it says 408 error. A few times we got 200 4961 (this is what we want) but that only happens when we send GET /HTTP/1.1 and when we send to GET/index.php?img=pngPlugIn HTTP/1.1. We try to send GET /pm/add_message.php?pmu=RAL005-07001-FL02-0030-2L Host:192.168……. but we get 408 320. Any suggestions? Do you know what we might be doing wrong? ((I have attached a list of the log in a word document in case anyone wants to view. Thank you!)