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pid_calibrate: Support saving calibration data via SAVE_CONFIG 

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2018-09-17 19:28:07 -04:00 committed by KevinOConnor
parent 531134f092
commit 5a1b2d61ae
2 changed files with 11 additions and 4 deletions
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4
docs/Config_checks.md
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@ -139,8 +139,8 @@ To calibrate the extruder, navigate to the OctoPrint terminal tab and
run the PID_CALIBRATE command. For example: `PID_CALIBRATE
HEATER=extruder TARGET=170`
At the completion of the tuning test, update the printer.cfg file with
the recommended pid_Kp, pid_Ki, and pid_Kd values.
At the completion of the tuning test run `SAVE_CONFIG` to update the
printer.cfg file the new PID settings.
If the printer has a heated bed and it supports being driven by PWM
(Pulse Width Modulation) then it is recommended to use PID control for

11
klippy/extras/pid_calibrate.py
View File

@ -35,12 +35,19 @@ class PIDCalibrate:
heater.set_control(old_control)
if write_file:
calibrate.write_file('/tmp/heattest.txt')
# Log and report results
Kp, Ki, Kd = calibrate.calc_final_pid()
logging.info("Autotune: final: Kp=%f Ki=%f Kd=%f", Kp, Ki, Kd)
self.gcode.respond_info(
"PID parameters: pid_Kp=%.3f pid_Ki=%.3f pid_Kd=%.3f\n"
"To use these parameters, update the printer config file with\n"
"the above and then issue a RESTART command" % (Kp, Ki, Kd))
"The SAVE_CONFIG command will update the printer config file\n"
"with these parameters and restart the printer." % (Kp, Ki, Kd))
# Store results for SAVE_CONFIG
configfile = self.printer.lookup_object('configfile')
configfile.set(heater_name, 'control', 'pid')
configfile.set(heater_name, 'pid_Kp', "%.3f" % (Kp,))
configfile.set(heater_name, 'pid_Ki', "%.3f" % (Ki,))
configfile.set(heater_name, 'pid_Kd', "%.3f" % (Kd,))
TUNE_PID_DELTA = 5.0