I’ve been trying to update my openevse firmware today without any joy.
Initially I bought the programmer recommended by Glynn, but as noted here, the connector doesn;t match that on the openevse. It seemed it was going to cost almost as much to get a set of individual leads to make the connection as to buy the one that JJC recommended, so I got that. However, that isn’t recognised when I plug it into my windows 10 PC (USB C - USB adapter). And I wasn;t able to figure out how to install a driver for it as the ‘Zagig’ programme doesn’t see it. I’m also not clear on how much of the instructions posted by Glynn (How to Load OpenEVSE Firmware (WinAVR) - OpenEVSE) I’m supposed to follow as they don’t seem to match what other people are doing.
As there was a flashing light on the programmer I did try running the AVRdude line, but just get the following error:
Command:
C:\Users\Rachel\Dropbox\Home\House\EnergyStuff\OpenEvSEFirmware>avrdude -c stk500v2 -P COM14 -p atmega328p -U eeprom:r:oldevse.hex:i
Response:
avrdude: ser_open(): can’t open device “\.\COM14”: The system cannot find the file specified.
I’m guessing that’s because there isn’t a driver installed, but I’m not much of a nerd in this area!
So having failed with that programmer, I then remembered my son had some leads from an old electronics kit and managed to patch up the programmer Glyn recommended using JCCs diagram. I also downloaded the driver from the instructions in the guide Glynn listed and seemed to be able to install that OK. HOwever, when I try to run Glyn’s command line I get this:
Command:
C:\Users\Rachel\Dropbox\Home\House\EnergyStuff\OpenEvSEFirmware>avrdude -p atmega328p -c usbasp -P usb -e -U flash:w:openevse.hex
Response:
avrdude: error: programm enable: target doesn’t answer. 1
avrdude: initialization failed, rc=-1
Double check connections and try again, or use -F to override
this check.
avrdude done. Thank you.
So I’m not clear whether that’s just a connection issue or something more as I’m pretty sure my wiring is right and making contact.
Can anyone help?
Regards
Rachel