Hi I am new to Arduino IDE and a novice programmer.
I have been pulling together a emonCMS energy monitor.
I am using an Intel Edison board.
I have found the following code on this forum which send info up to emonCMS and with some tweaks will do exactly what I need (hound here, Send email and send data to Emoncms in the same sketch - Programming Questions - Arduino Forum )
not modified it works, but it does it only runs once and does not loop back round again.
my understanding is that anything in void loop () will loop forever.. ? (possibly wrong)
I am not using the Arduino Ethernet, but my Edison is connected to my wifi network.
can anyone advise on why this only run/post to emonCMS once then stop? (apologies if it is obvious..)
Any assistance would be gratefully received.
the code..
char foo; //without a simple variable declaration, use of #ifdef at the top of your code raises an error!
#include <SPI.h>
#include <Ethernet.h>
// Include Emon Library
#include "EmonLib.h"
//network configuration, WIRED or WIFI
//if using WIRED
byte mac[] = {0x90, 0xA2, 0xDA, 0x00, 0x69, 0xD5};
// fill in an available IP address on your network here,
// for auto configuration:
IPAddress ip(192, 168, 0, 120);
IPAddress subnet(255, 255, 255, 0);
IPAddress DNS(8, 8, 8, 8);
IPAddress gw(192, 168, 0, 254);
EthernetClient client;
//Calibrations
const int volt = 230;
const float ct_calibration = 28;
const float temp_offset = 1;
// Sensor pins
const int lightSensorPin = A0;
int tempSensorPin = A1;
const int currentSensor1Pin = A2;
const int currentSensor2Pin = A3;
float tempValue = 0;
float Irms1 = 0;
float Irms2 = 0;
int lightValue = 0;
// Create an Emon instance
EnergyMonitor emon1;
EnergyMonitor emon2;
//Emoncms configurations
char server[] = "emoncms.org"; // name address for emoncms.org
//IPAddress server(213, 138, 101, 177); // numeric IP for emoncms.org (no DNS)
String apikey = "myapikey"; //api key
int node = 0; //if 0, not used
unsigned long lastConnectionTime = 0; // last time you connected to the server, in milliseconds
boolean lastConnected = false; // state of the connection last time through the main loop
const unsigned long postingInterval = 3*1000; // delay between updates, in milliseconds
void setup() {
// start serial port:
Serial.begin(9600);
// Display a welcome message
Serial.println("Emoncms client starting...");
emon1.current(currentSensor1Pin, ct_calibration);
emon2.current(currentSensor2Pin, ct_calibration);
#ifdef WIFI
// check for the presence of the shield:
if (WiFi.status() == WL_NO_SHIELD) {
Serial.println("WiFi shield not present");
// don't continue:
while(true);
}
// attempt to connect to Wifi network:
while ( status != WL_CONNECTED) {
Serial.print("Attempting to connect to SSID: ");
Serial.println(ssid);
// Connect to WPA/WPA2 network.
status = WiFi.begin(ssid, pass);
// wait 10 seconds for connection:
delay(10000);
}
Serial.println("Connected to wifi");
#else
if (!Ethernet.begin(mac)) {
// if DHCP fails, start with a hard-coded address:
Serial.println("Failed to get an IP address using DHCP, forcing manually");
Ethernet.begin(mac, ip, dns, gw, subnet);
}
#endif
printStatus();
}
void loop() {
// if there's incoming data from the net connection.
// send it out the serial port. This is for debugging
// purposes only:
if (client.available()) {
char c = client.read();
Serial.print(c);
}
// if there's no net connection, but there was one last time
// through the loop, then stop the client:
if (!client.connected() && lastConnected) {
Serial.println();
Serial.println("Disconnecting...");
client.stop();
}
// if you're not connected, and at least <postingInterval> milliseconds have
// passed sinceyour last connection, then connect again and
// send data:
if(!client.connected() && (millis() - lastConnectionTime > postingInterval)) {
//read sensors
lightValue = analogRead(lightSensorPin);
tempValue = analogRead(tempSensorPin);
tempValue = (5 * tempValue * 100)/1024;
Irms1 = emon1.calcIrms(1480);
Irms2 = emon2.calcIrms(1480);
//Print values (debug)
Serial.println();
Serial.print("Temp : ");
Serial.print(tempValue);
Serial.print(" ; Light : ");
Serial.print(lightValue);
Serial.print(" ; Power1 : ");
Serial.print(Irms1 * volt - 10);
Serial.print(" ; Power2 : ");
Serial.println(Irms2 * volt - 10);
//send values
sendData();
}
// store the state of the connection for next time through
// the loop:
lastConnected = client.connected();
}
// this method makes a HTTP connection to the server:
void sendData() {
// if there's a successful connection:
if (client.connect(server, 80)) {
Serial.println("Connecting...");
// send the HTTP GET request:
client.print("GET /api/post?apikey=");
client.print(apikey);
if (node > 0) {
client.print("&node=");
client.print(node);
}
client.print("&json={temp");
client.print(":");
client.print(tempValue - temp_offset);
client.print(",light:");
client.print(lightValue);
client.print(",power1:");
client.print(Irms1 * volt - 10);
client.print(",power2:");
client.print(Irms2 * volt - 10);
client.println("} HTTP/1.1");
client.println("Host:emoncms.org");
client.println("User-Agent: Arduino-ethernet");
client.println("Connection: close");
client.println();
// note the time that the connection was made:
lastConnectionTime = millis();
}
else {
// if you couldn't make a connection:
Serial.println("Connection failed");
Serial.println("Disconnecting...");
client.stop();
}
}
void printStatus() {
#ifdef WIFI
// print the SSID of the network you're attached to:
Serial.print("SSID: ");
Serial.println(WiFi.SSID());
// print your WiFi shield's IP address:
IPAddress ip = WiFi.localIP();
Serial.print("IP Address: ");
Serial.println(ip);
// print the received signal strength:
long rssi = WiFi.RSSI();
Serial.print("signal strength (RSSI):");
Serial.print(rssi);
Serial.print(" dBm");
#else
// print your local IP address:
Serial.print("IP address: ");
for (byte thisByte = 0; thisByte < 4; thisByte++) {
// print the value of each byte of the IP address:
Serial.print(Ethernet.localIP()[thisByte], DEC);
Serial.print(".");
}
#endif
Serial.println();
}
float getCelsius(int sensorValue) {
/*
created by Federico Vanzati for TinkerKit Thermistor Library
*/
const static float ADCres = 1023.0;
const static int Beta = 3950; // Beta parameter
const static float Kelvin = 273.15; // 0°C = 273.15 K
const static int Rb = 10000; // 10 kOhm
const static float Ginf = 120.6685; // Ginf = 1/Rinf
float Rthermistor = Rb * (ADCres / sensorValue - 1);
float _temperatureC = Beta / (log( Rthermistor * Ginf )) ;
return _temperatureC - Kelvin;
}