#linuxcnc-devel Logs

Nov 23 2017

09:49 AM jepler: will bounce the forum in a minute, kernel update
05:10 PM andypugh: pcw_home: Are you there?
05:10 PM pcw_home: Yeah
05:10 PM andypugh: I am talking to Rene from STMBL
05:10 PM andypugh: They want to set parameters on their drive from HAL, outside of the process data, and not using setsserial.
05:11 PM andypugh: Now, you were worried about waering out the EEPROM if HAL setp could write NV data.
05:11 PM andypugh: (wearing out)
05:12 PM andypugh: But would it be likely to be OK if the driver only wrote data that didn’t match the current read-back value?
05:13 PM pcw_home: yes that would be ok ( if its guaranteed to read first )
05:13 PM andypugh: Alternatively we could just exclude the NV datatypes (0x04 and 0x05) from the scheme
05:13 PM andypugh: I never really liked settserial anyway
05:14 PM andypugh: (serial remote flashing belongs in Mesaflash too, if you ask me)
05:15 PM pcw_home: I think on our stuff EEPROM writing is rather magic because its slow and no other communications can happen when in progress
05:16 PM pcw_home: ( due to hardware limitations )
05:17 PM andypugh: Yes, I am anticipating only doing a parameter write at the point when the sserial port transitions to “run” at which point you have to hope that all the paramter setting in the HAL file is finished.
05:17 PM andypugh: (If somone wants to change a value on a live system they have to toggle the port on and off. I think that’s a good idea)
05:18 PM pcw_home: Yeah