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The file you are editing (.ino) needs compiling to produce a binary hex file, then that hex file is the file installed to the AVR by avrdude. Normally the Arduino IDE would take care of all this but since the IDE is not installed/used on the emon images you will need to compile your modified ino on another machine and transfer the hex file that is produced, to the Pi. Unless of course, you install and use the IDE, either with a keyboard and monitor or a remote desktop/vnc (or maybe use a command line compiler like "inotool" or "arduino-mk")

Paul

See http://openenergymonitor.org/emon/node/11368#comment-34887

Hi all,

Thanks for your help.  I downloaded Arduino 1.6.5 and tried to compile the ino file.  I got some errors for library missing (Jeelib, Emonpi,...)  I downloaded and installed all missing library but i get other compilation errors:

emonPi_RFM69CW_RF12Demo_DiscreteSampling.ino: In function 'void setup()':
emonPi_RFM69CW_RF12Demo_DiscreteSampling:176: error: 'emonPi_startup' was not declared in this scope
emonPi_RFM69CW_RF12Demo_DiscreteSampling:177: error: 'RF_Setup' was not declared in this scope
emonPi_RFM69CW_RF12Demo_DiscreteSampling:178: error: 'check_for_DS18B20' was not declared in this scope
emonPi_RFM69CW_RF12Demo_DiscreteSampling:179: error: 'emonPi_LCD_Startup' was not declared in this scope
emonPi_RFM69CW_RF12Demo_DiscreteSampling:181: error: 'CT_Detect' was not declared in this scope
emonPi_RFM69CW_RF12Demo_DiscreteSampling:182: error: 'serial_print_startup' was not declared in this scope
emonPi_RFM69CW_RF12Demo_DiscreteSampling:184: error: 'onPulse' was not declared in this scope
emonPi_RFM69CW_RF12Demo_DiscreteSampling.ino: In function 'void loop()':
emonPi_RFM69CW_RF12Demo_DiscreteSampling:229: error: 'handleInput' was not declared in this scope
emonPi_RFM69CW_RF12Demo_DiscreteSampling:235: error: 'RF_Rx_Handle' was not declared in this scope
emonPi_RFM69CW_RF12Demo_DiscreteSampling:239: error: 'send_RF' was not declared in this scope
emonPi_RFM69CW_RF12Demo_DiscreteSampling:281: error: 'get_temperature' was not declared in this scope
emonPi_RFM69CW_RF12Demo_DiscreteSampling:297: error: 'send_emonpi_serial' was not declared in this scope
'emonPi_startup' was not declared in this scope

Do you know what i did wrong ?

Thanks by advance

Did you download the complete directory that the file emonPi_RFM69CW_RF12Demo_DiscreteSampling.ino is in? Because you must as it contains the remaining source files that are needed.

Thanks for your help again !  I could successfully compile the original emonPi_RFM69CW_RF12Demo_DiscreteSampling.ino.  I got a hex file which i rename emonpi_raw.hex.

However i have a problem with the next step.  When i am using:

sudo service emonhub stop

avrdude -v -c arduino -p ATMEGA328P -P /dev/ttyAMA0 -b 115200 -U flash:w:/home/pi/emonpi/Atmega328/emonPi_RFM69CW_RF12Demo_DiscreteSampling/compiled/emonPi_latest.hex

sudo service emonhub start

Everything works

But when i am doing the same with my compiled file:

sudo service emonhub stop

avrdude -v -c arduino -p ATMEGA328P -P /dev/ttyAMA0 -b 115200 -U flash:w:/home/pi/emonpi/Atmega328/emonPi_RFM69CW_RF12Demo_DiscreteSampling/compiled/emonPi_raw.hex

sudo service emonhub start

My emonPi node is marked "Inactive"

When looking at the emonhub log, the only difference is that with emonPi_raw.hex i have a warning

2015-11-13 13:14:17,550 WARNING MainThread Device communication error - check settings
 

I don't understand why it doesn't work since i am just recompiling the original emonPi_RFM69CW_RF12Demo_DiscreteSampling.ino without making any change.

Hum ... sorry it works.  I uploaded the wrong file on the pi ...  Thanks for all your help !

"I uploaded the wrong file..."

Now if I could have one [insert your unit of currency here] for every time I've done that, or edited one file and uploaded another, I'd be rich indeed!