Selective eprom parameters

mendelevium

as i understand, the eprom stores important variables in the firmware without the need of flashing the arduino with new values, but this can lead to a user causing mayhem with the printer. Is there a way to disable the possibility of changing some of the values?
for example, through eprom changes, one can alter the printer size. Can this be disabled and how?

Repetier

There is no switch and if you have eeprom all values must be in eeprom. But there is intermediate way as most users will use eeprom editors to change them - do not report all values so user does not see them and hence does not change them. Check eeprom.cpp function void EEPROM::writeSettings() it is just a lot of write operations for all changeable eeprom values. Comment lines with outputs you do not want to show to the user.

mendelevium

Repetier,

It does not work or I am doing something wrong....

I uncommented the homing feedrate and it still shows.

I also have commanded M502 and M500 but they still appear

This is how I modified the eeprom.cpp

writeFloat(EPR_Z_MAX_FEEDRATE, Com::tEPRZMaxFeedrate);
#if DRIVE_SYSTEM != DELTA
// writeFloat(EPR_X_HOMING_FEEDRATE, Com::tEPRXHomingFeedrate);
// writeFloat(EPR_Y_HOMING_FEEDRATE, Com::tEPRYHomingFeedrate);
#endif
// writeFloat(EPR_Z_HOMING_FEEDRATE, Com::tEPRZHomingFeedrate);
writeFloat(EPR_MAX_JERK, Com::tEPRMaxJerk);
#if DRIVE_SYSTEM != DELTA
writeFloat(EPR_MAX_ZJERK, Com::tEPRMaxZJerk);
#endif
writeFloat(EPR_X_HOME_OFFSET, Com::tEPRXHomePos);
writeFloat(EPR_Y_HOME_OFFSET, Com::tEPRYHomePos);

Repetier

That removes x,y,z homing feedrate and is 100% correct. Make sure it is the version you upload to printer. Ifyou use github there is a avr and a due version. Only reason it does not work I can think of is that you did not compile and upload the version where you modified the files.

mendelevium

Thanks!

I am sure I compiled the correct version. I tried over and over and commanded M502 and M500 to flash and reload the eeproms...

will retry...

Repetier

That is the function responding to M205 from which the editor makes the values. At least for repetier-host/server but assume all will do it same way since it is allowed to be changed any time.