Error compiling EmonTXfirmware

I copied the code from the site:

 

/*
 EmonTx CT123 example
 
 An example sketch for the emontx module for
 CT only electricity monitoring.
 
 Part of the openenergymonitor.org project
 Licence: GNU GPL V3
 
 Authors: Glyn Hudson, Trystan Lea
 Builds upon JeeLabs RF12 library and Arduino
 
*/
 
const int CT1 = 1; 
const int CT2 = 0;                                                      // Set to 0 to disable CT channel 2
const int CT3 = 0;                                                      // Set to 0 to disable CT channel 3
 
#define freq RF12_433MHZ                                                // Frequency of RF12B module can be RF12_433MHZ, RF12_868MHZ or RF12_915MHZ. You should use the one matching the module you have.
const int nodeID = 10;                                                  // emonTx RFM12B node ID
const int networkGroup = 210;                                           // emonTx RFM12B wireless network group - needs to be same as emonBase and emonGLCD
 
const int UNO = 1;                                                      // Set to 0 if your not using the UNO bootloader (i.e using Duemilanove) - All Atmega's shipped from OpenEnergyMonitor come with Arduino Uno bootloader
#include <avr/wdt.h>                                                     
 
#include <JeeLib.h>                                                     // Download JeeLib: http://github.com/jcw/jeelib
ISR(WDT_vect) { Sleepy::watchdogEvent(); }                              // Attached JeeLib sleep function to Atmega328 watchdog -enables MCU to be put into sleep mode inbetween readings to reduce power consumption 
 
#include "EmonLib.h"
EnergyMonitor ct1,ct2,ct3;                                              // Create  instances for each CT channel
 
typedef struct { int power1, power2, power3, battery; } PayloadTX;      // create structure - a neat way of packaging data for RF comms
PayloadTX emontx;                                                       
 
const int LEDpin = 9;                                                   // On-board emonTx LED 
 
void setup() 
{
  Serial.begin(9600);
  Serial.println("emonTX CT123 example"); 
  Serial.println("OpenEnergyMonitor.org");
             
  if (CT1) ct1.currentTX(1, 115.6);                                              // Setup emonTX CT channel (channel, calibration)
  if (CT2) ct2.currentTX(2, 115.6);
  if (CT3) ct3.currentTX(3, 115.6);
  
  rf12_initialize(nodeID, freq, networkGroup);                          // initialize RFM12B
  rf12_sleep(RF12_SLEEP);
 
  pinMode(LEDpin, OUTPUT);                                              // Setup indicator LED
  digitalWrite(LEDpin, HIGH);
  
  if (UNO) wdt_enable(WDTO_8S);                                         // Enable anti crash (restart) watchdog if UNO bootloader is selected. Watchdog does not work with duemilanove bootloader                                                             // Restarts emonTx if sketch hangs for more than 8s
}
 
void loop() 
  if (CT1) {
    emontx.power1 = ct1.calcIrms(1480) * 240.0;                           // Calculate CT 1 power
    Serial.print(emontx.power1);                                          // Output to serial  
  }
  
  if (CT2) {
    emontx.power2 = ct2.calcIrms(1480) * 240.0;
    Serial.print(" "); Serial.print(emontx.power2);
  } 
 
  if (CT3) {
    emontx.power3 = ct3.calcIrms(1480) * 240.0;
    Serial.print(" "); Serial.print(emontx.power3);
  } 
  
  emontx.battery = ct1.readVcc();
  
  Serial.print(" "); Serial.print(emontx.battery);
  Serial.println(); delay(100);
 
  send_rf_data();                                                       // *SEND RF DATA* - see emontx_lib
  emontx_sleep(5);                                                      // sleep or delay in seconds - see emontx_lib
  digitalWrite(LEDpin, HIGH); delay(2); digitalWrite(LEDpin, LOW);      // flash LED
}

 

void send_rf_data()
{
  rf12_sleep(RF12_WAKEUP);
  // if ready to send + exit loop if it gets stuck as it seems too
  int i = 0; while (!rf12_canSend() && i<10) {rf12_recvDone(); i++;}
  rf12_sendStart(0, &emontx, sizeof emontx);
  // set the sync mode to 2 if the fuses are still the Arduino default
  // mode 3 (full powerdown) can only be used with 258 CK startup fuses
  rf12_sendWait(2);
  rf12_sleep(RF12_SLEEP);
}
 
void emontx_sleep(int seconds) {
  // if (emontx.battery > 3300) {
    for (int i=0; i<seconds; i++) {
      delay(1000);
      if (UNO) wdt_reset();
    }
  // } else Sleepy::loseSomeTime(seconds*1000);
}

But when I want to compile this code I get the following errors:

error compiling

 

EmonTX.cpp.o: In function `loop':
EmonTX.cpp:64: undefined reference to `EnergyMonitor::calcIrms(int)'
EmonTX.cpp:69: undefined reference to `EnergyMonitor::calcIrms(int)'
EmonTX.cpp:74: undefined reference to `EnergyMonitor::calcIrms(int)'
EmonTX.cpp:78: undefined reference to `EnergyMonitor::readVcc()'
EmonTX.cpp.o: In function `setup':
EmonTX.cpp:48: undefined reference to `EnergyMonitor::currentTX(int, double)'
EmonTX.cpp:49: undefined reference to `EnergyMonitor::currentTX(int, double)'
EmonTX.cpp:50: undefined reference to `EnergyMonitor::currentTX(int, double)'
 
What
 
am I doing wrong?

 

TrystanLea's picture

Re: Error compiling EmonTXfirmware

Hello Bramper, you need to EmonLibrary installed: https://github.com/openenergymonitor/EmonLib It needs to be copied into the arduino libraries folder.

glyn.hudson's picture

Re: Error compiling EmonTXfirmware

Don't copy and past the code, click on 'zip' > download the files > extract then open the correct file in the IDE. You should see multiple tabs open automatically. Instructions here: http://openenergymonitor.org/emon/modules/emontx/firmware

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