load_cell_probe: Enhance regression test case

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

klippy/extras/load_cell.py

@@ -313,6 +313,8 @@ class LoadCellSampleCollector:
         self._errors = 0
         overflows = self._overflows
         self._overflows = 0
+        if self._mcu.is_fileoutput():
+            samples = [(0., 0., 0.)]
         return samples, (errors, overflows) if errors or overflows else 0
 
     def _collect_until(self, timeout):
@@ -324,6 +326,8 @@ class LoadCellSampleCollector:
                 raise self._printer.command_error(
                     "LoadCellSampleCollector timed out! Errors: %i,"
                     " Overflows: %i" % (self._errors, self._overflows))
+            if self._mcu.is_fileoutput():
+                break
             self._reactor.pause(now + RETRY_DELAY)
         return self._finish_collecting()
 

klippy/extras/load_cell_probe.py

@@ -454,6 +454,8 @@ class LoadCellProbingMove:
         res = self._dispatch.stop()
         # clear the homing state so it stops processing samples
         self._last_trigger_time = self._mcu_load_cell_probe.clear_home()
+        if self._mcu.is_fileoutput():
+            self._last_trigger_time = home_end_time
         if res >= mcu.MCU_trsync.REASON_COMMS_TIMEOUT:
             error = "Load Cell Probe Error: unknown reason code %i" % (res,)
             if res in self.ERROR_MAP:

test/klippy/load_cell.cfg

@@ -1,11 +1,75 @@
-# Test config for load_cell
+# Test config for load cells
+[stepper_x]
+step_pin: PF0
+dir_pin: PF1
+enable_pin: !PD7
+microsteps: 16
+rotation_distance: 40
+endstop_pin: ^PE5
+position_endstop: 0
+position_max: 200
+homing_speed: 50
+
+[stepper_y]
+step_pin: PF6
+dir_pin: !PF7
+enable_pin: !PF2
+microsteps: 16
+rotation_distance: 40
+endstop_pin: ^PJ1
+position_endstop: 0
+position_max: 200
+homing_speed: 50
+
+[stepper_z]
+step_pin: PL3
+dir_pin: PL1
+enable_pin: !PK0
+microsteps: 16
+rotation_distance: 8
+endstop_pin: PK1
+position_endstop: 0.0
+position_max: 200
+
+[extruder]
+step_pin: PA4
+dir_pin: PA6
+enable_pin: !PA2
+microsteps: 16
+rotation_distance: 33.5
+nozzle_diameter: 0.400
+filament_diameter: 1.750
+heater_pin: PB4
+sensor_type: EPCOS 100K B57560G104F
+sensor_pin: PK5
+control: pid
+pid_Kp: 22.2
+pid_Ki: 1.08
+pid_Kd: 114
+min_temp: 0
+max_temp: 250
+
+[heater_bed]
+heater_pin: PH5
+sensor_type: EPCOS 100K B57560G104F
+sensor_pin: PK6
+control: watermark
+min_temp: 0
+max_temp: 130
+
+[bed_mesh]
+mesh_min: 10,10
+mesh_max: 180,180
+
 [mcu]
 serial: /dev/ttyACM0
 
 [printer]
-kinematics: none
+kinematics: cartesian
 max_velocity: 300
 max_accel: 3000
+max_z_velocity: 5
+max_z_accel: 100
 
 [load_cell my_ads1220]
 sensor_type: ads1220
@@ -14,10 +78,22 @@ data_ready_pin: PA1
 
 [load_cell my_hx711]
 sensor_type: hx711
-sclk_pin: PA2
-dout_pin: PA3
+sclk_pin: PA3
+dout_pin: PA5
 
 [load_cell my_hx717]
 sensor_type: hx717
-sclk_pin: PA4
-dout_pin: PA5
+sclk_pin: PA7
+dout_pin: PJ0
+
+[load_cell_probe]
+z_offset: 0
+sensor_type: ads1220
+speed: 10.0
+cs_pin: PJ2
+data_ready_pin: PJ3
+counts_per_gram: 100
+reference_tare_counts: 1000
+drift_filter_cutoff_frequency: 0.8
+buzz_filter_cutoff_frequency: 100.0
+notch_filter_frequencies: 50, 60

test/klippy/load_cell.test

@@ -2,4 +2,23 @@
 DICTIONARY atmega2560.dict
 CONFIG load_cell.cfg
 
-G4 P1000
+# Start by homing the printer.
+G28
+G1 F6000
+
+# Z / X / Y moves
+G1 Z1
+G1 X1
+G1 Y1
+
+# Run bed_mesh_calibrate
+BED_MESH_CALIBRATE
+
+# Move again
+G1 Z5 X0 Y0
+
+# Do regular probe
+PROBE
+
+# Move again
+G1 Z9