when'd i last commit this pos?
This commit is contained in:
Thomas Ales [M S E]
@@ -0,0 +1,569 @@
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"""
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BBD202 Stage Diagnostic Tests
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Diagnostic tests for the Thorlabs MLS203/BBD202 motion controller to:
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1. Check if axes are properly homed
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2. Move in a 15mm square pattern while outputting position data
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3. Detect stage hangs through position monitoring
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4. Output response information for debugging
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"""
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import sys
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import time
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from typing import Optional
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from hardware.bbd202 import MotionController, MotorStatusBits
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def format_status_bits(bits: Optional[int]) -> str:
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"""Format status bits as a readable string with key flags."""
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if bits is None:
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return "None (no status received)"
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flags = []
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status = MotorStatusBits(bits)
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# Key flags to check
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if MotorStatusBits.HOMED in status:
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flags.append("HOMED")
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if MotorStatusBits.HOMING in status:
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flags.append("HOMING")
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if MotorStatusBits.ENABLED in status:
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flags.append("ENABLED")
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if MotorStatusBits.SETTLED in status:
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flags.append("SETTLED")
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if MotorStatusBits.TRACKING in status:
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flags.append("TRACKING")
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if MotorStatusBits.INMOTIONCW in status:
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flags.append("INMOTIONCW")
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if MotorStatusBits.INMOTIONCCW in status:
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flags.append("INMOTIONCCW")
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if MotorStatusBits.POWEROK in status:
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flags.append("POWEROK")
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if MotorStatusBits.ERROR in status:
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flags.append("ERROR")
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if MotorStatusBits.POSITIONERROR in status:
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flags.append("POSITIONERROR")
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if MotorStatusBits.OVERTEMP in status:
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flags.append("OVERTEMP")
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if MotorStatusBits.COMMUTATIONERROR in status:
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flags.append("COMMUTATIONERROR")
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flag_str = ", ".join(flags) if flags else "NO_FLAGS"
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return f"0x{bits:08X} [{flag_str}]"
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def test_homing_status(mc: MotionController) -> bool:
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"""
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Test 1: Check if both axes are properly homed.
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Returns True if both axes are homed, False otherwise.
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"""
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print("\n" + "="*70)
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print("TEST 1: Checking Homing Status")
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print("="*70)
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# Request fresh status from both axes
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print("\nRequesting status update from both axes...")
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mc.request_status_update(mc.DEST_X_AXIS)
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mc.request_status_update(mc.DEST_Y_AXIS)
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time.sleep(0.2) # Allow time for response
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# Also poll status to ensure we have latest
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mc.poll_status()
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time.sleep(0.1)
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# Check X-axis
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x_bits = mc.status_bits_x
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x_homed = mc.is_homed_x
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print(f"\nX-Axis Status:")
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print(f" Raw status bits: {format_status_bits(x_bits)}")
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print(f" is_homed_x: {x_homed}")
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# Check Y-axis
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y_bits = mc.status_bits_y
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y_homed = mc.is_homed_y
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print(f"\nY-Axis Status:")
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print(f" Raw status bits: {format_status_bits(y_bits)}")
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print(f" is_homed_y: {y_homed}")
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# Check for errors
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last_err = mc.last_error
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if last_err:
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print(f"\n** Last Error: {last_err}")
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error_check = mc.check_for_errors()
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if error_check:
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print(f"** Error condition detected: {error_check}")
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# Summary
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print(f"\n--- Homing Status Summary ---")
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if x_homed and y_homed:
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print("PASS: Both axes are homed")
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return True
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else:
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print("FAIL: One or both axes are NOT homed")
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if not x_homed:
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print(" -> X-axis needs homing")
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if not y_homed:
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print(" -> Y-axis needs homing")
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return False
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def test_square_pattern(mc: MotionController, side_length: float = 15.0) -> bool:
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"""
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Test 2: Move the stage in a square pattern.
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Moves in a 15mm square starting from current position, outputting
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position data at each step to detect hangs.
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Pattern: Start -> +X -> +Y -> -X -> -Y (back to start)
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Uses the new wait_until_settled() method for reliable motion detection.
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"""
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print("\n" + "="*70)
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print(f"TEST 2: Square Pattern Movement ({side_length}mm)")
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print("="*70)
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print("Using wait_until_settled() for motion detection")
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# Get starting position
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mc.poll_positions()
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time.sleep(0.1)
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start_x = mc.position_x
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start_y = mc.position_y
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if start_x is None or start_y is None:
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print("ERROR: Could not get initial position")
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return False
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print(f"\nStarting position: X={start_x:.4f}mm, Y={start_y:.4f}mm")
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# Define the square corners (relative to start)
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corners = [
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(start_x + side_length, start_y), # Move +X
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(start_x + side_length, start_y + side_length), # Move +Y
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(start_x, start_y + side_length), # Move -X
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(start_x, start_y), # Move -Y (back to start)
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]
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corner_names = ["+X edge", "+Y edge (diagonal)", "-X edge", "Return to start"]
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all_passed = True
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for i, (target_x, target_y) in enumerate(corners):
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print(f"\n--- Move {i+1}/4: {corner_names[i]} ---")
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print(f"Target: X={target_x:.4f}mm, Y={target_y:.4f}mm")
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# Clear any previous error
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mc.clear_last_error()
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# Record start time
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move_start = time.time()
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# Issue move command (non-blocking)
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mc.move_to_fast(x=target_x, y=target_y)
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# Use poll_until_idle() in a loop to show progress
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print(f"\n{'Time':>8} {'X_pos':>12} {'Y_pos':>12} {'X_err':>10} {'Y_err':>10} {'Pending'}")
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print("-" * 70)
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sample_count = 0
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while not mc.poll_until_idle(tolerance=0.005, timeout=0.05):
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elapsed = time.time() - move_start
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curr_x = mc.position_x
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curr_y = mc.position_y
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if curr_x is not None and curr_y is not None:
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x_err = curr_x - target_x
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y_err = curr_y - target_y
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# Print every 5th sample
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if sample_count % 5 == 0:
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pending = mc.get_pending_targets()
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pending_str = ", ".join([f"{'X' if d==0x21 else 'Y'}" for d in pending.keys()])
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print(f"{elapsed:>7.3f}s {curr_x:>12.4f} {curr_y:>12.4f} {x_err:>+10.4f} {y_err:>+10.4f} {pending_str:>8}")
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sample_count += 1
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# Timeout check
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if elapsed > 30.0:
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print(f"\n** TIMEOUT after 30s - stage may be hung!")
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all_passed = False
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mc.clear_pending_moves()
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break
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# Move complete - show final status
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elapsed = time.time() - move_start
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curr_x = mc.position_x
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curr_y = mc.position_y
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if curr_x is not None and curr_y is not None:
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x_err = curr_x - target_x
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y_err = curr_y - target_y
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print(f"{elapsed:>7.3f}s {curr_x:>12.4f} {curr_y:>12.4f} {x_err:>+10.4f} {y_err:>+10.4f} ** DONE **")
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print(f"\nMove completed in {elapsed:.3f}s")
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print(f"Final position: X={curr_x:.4f}mm, Y={curr_y:.4f}mm")
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print(f"Position error: X={abs(x_err)*1000:.1f}um, Y={abs(y_err)*1000:.1f}um")
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# Check for errors after move
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err = mc.check_for_errors()
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if err:
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print(f"** Error after move: {err}")
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all_passed = False
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last_err = mc.last_error
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if last_err:
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print(f"** Last error: {last_err}")
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all_passed = False
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# Short delay between moves
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time.sleep(0.1)
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# Final summary
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print(f"\n--- Square Pattern Summary ---")
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mc.poll_positions()
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time.sleep(0.1)
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final_x = mc.position_x
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final_y = mc.position_y
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if final_x is not None and final_y is not None:
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total_x_err = abs(final_x - start_x)
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total_y_err = abs(final_y - start_y)
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print(f"Final position: X={final_x:.4f}mm, Y={final_y:.4f}mm")
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print(f"Start position: X={start_x:.4f}mm, Y={start_y:.4f}mm")
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print(f"Return error: X={total_x_err*1000:.1f}um, Y={total_y_err*1000:.1f}um")
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if total_x_err > 0.05 or total_y_err > 0.05:
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print("FAIL: Did not return to start position accurately (>50um)")
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all_passed = False
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if all_passed:
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print("PASS: Square pattern completed successfully")
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else:
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print("FAIL: Issues detected during square pattern")
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return all_passed
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def print_diagnostic_info(mc: MotionController):
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"""Print comprehensive diagnostic information about the controller."""
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print("\n" + "="*70)
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print("CONTROLLER DIAGNOSTIC INFO")
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print("="*70)
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try:
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hw_info = mc.get_hw_info()
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print(f"\nHardware Info:")
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print(f" Serial Number: {hw_info['serial_number']}")
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print(f" Model: {hw_info['model']}")
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print(f" Firmware: {hw_info['firmware_version']}")
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print(f" HW Version: {hw_info['hw_version']}")
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print(f" Channels: {hw_info['num_channels']}")
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print(f" Notes: {hw_info['notes']}")
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except Exception as e:
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print(f" Error getting hardware info: {e}")
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# Request and display velocity params
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print(f"\nVelocity Parameters:")
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mc.send_command(0x0414, param1=0x01, dest=mc.DEST_X_AXIS) # REQ_VELPARAMS
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mc.send_command(0x0414, param1=0x01, dest=mc.DEST_Y_AXIS)
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time.sleep(0.1)
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x_vel = mc.velocity_params_x
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y_vel = mc.velocity_params_y
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if x_vel:
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print(f" X-Axis: max_vel={x_vel['max_velocity']:.2f}mm/s, accel={x_vel['acceleration']:.2f}mm/s²")
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if y_vel:
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print(f" Y-Axis: max_vel={y_vel['max_velocity']:.2f}mm/s, accel={y_vel['acceleration']:.2f}mm/s²")
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def test_bay_and_channel_status(mc: MotionController) -> dict:
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"""
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Test bay occupancy and channel enable states.
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Returns dict with diagnostic info about each axis.
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"""
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print("\n" + "="*70)
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print("BAY AND CHANNEL DIAGNOSTICS")
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print("="*70)
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results = {'x': {}, 'y': {}}
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# Query bay status using MGMSG_RACK_REQ_BAYUSED (0x0060)
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print("\n--- Querying Bay Status (RACK_REQ_BAYUSED 0x0060) ---")
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print("Sending to controller (0x11)...")
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# Send bay request to controller
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mc.send_command(0x0060, param1=0x00, param2=0x00, dest=0x11, source=0x01)
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time.sleep(0.2)
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# Check for response in queue
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msgs = mc.get_all_messages()
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bay_response = None
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for msg in msgs:
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print(f" Received: msg_id=0x{msg.msg_id:04X}, source=0x{msg.source:02X}, "
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f"param1=0x{msg.param1:02X}, param2=0x{msg.param2:02X}, data={msg.data.hex() if msg.data else 'none'}")
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if msg.msg_id == 0x0061: # RACK_GET_BAYUSED
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bay_response = msg
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if bay_response:
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# param1 contains bay_ident (which bay), param2 contains state
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print(f"\nBay status response: bay={bay_response.param1}, state=0x{bay_response.param2:02X}")
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else:
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print(" No RACK_GET_BAYUSED response received")
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# Check channel enable state for X-axis (0x21)
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print("\n--- X-Axis (Bay 1 / dest=0x21) Channel Status ---")
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print(f" Destination address: 0x{mc.DEST_X_AXIS:02X}")
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try:
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x_enabled = mc.get_channel_enable_state(mc.DEST_X_AXIS, timeout=2.0)
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print(f" Channel enabled: {x_enabled}")
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results['x']['enabled'] = x_enabled
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except Exception as e:
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print(f" Error querying channel state: {e}")
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results['x']['enabled'] = None
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# Get X position to verify communication
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x_pos = mc.get_position(mc.DEST_X_AXIS, timeout=2.0)
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print(f" Current position: {x_pos:.4f}mm" if x_pos is not None else " Position query failed!")
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results['x']['position'] = x_pos
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results['x']['communicating'] = x_pos is not None
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# Check channel enable state for Y-axis (0x22)
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print("\n--- Y-Axis (Bay 2 / dest=0x22) Channel Status ---")
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print(f" Destination address: 0x{mc.DEST_Y_AXIS:02X}")
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try:
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y_enabled = mc.get_channel_enable_state(mc.DEST_Y_AXIS, timeout=2.0)
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print(f" Channel enabled: {y_enabled}")
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results['y']['enabled'] = y_enabled
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except Exception as e:
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print(f" Error querying channel state: {e}")
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results['y']['enabled'] = None
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# Get Y position to verify communication
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y_pos = mc.get_position(mc.DEST_Y_AXIS, timeout=2.0)
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print(f" Current position: {y_pos:.4f}mm" if y_pos is not None else " Position query failed!")
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results['y']['position'] = y_pos
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results['y']['communicating'] = y_pos is not None
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return results
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def test_y_axis_move_verbose(mc: MotionController) -> bool:
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"""
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Test Y-axis movement using the new wait_until_settled() method.
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Sends a small Y-axis move and monitors progress.
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"""
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print("\n" + "="*70)
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print("Y-AXIS VERBOSE MOVE TEST")
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print("="*70)
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print("Using wait_until_settled() for motion detection")
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# Get current Y position
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mc.poll_positions()
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time.sleep(0.1)
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start_y = mc.position_y
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if start_y is None:
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print("ERROR: Cannot get Y position")
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return False
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print(f"\nCurrent Y position: {start_y:.4f}mm")
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# Target: move 5mm in Y
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target_y = start_y + 5.0
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print(f"Target Y position: {target_y:.4f}mm")
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# Issue move command using move_to_fast (which tracks pending moves)
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print("\n--- Issuing Y-axis move via move_to_fast() ---")
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mc.move_to_fast(y=target_y)
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# Show pending moves
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pending = mc.get_pending_targets()
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print(f" Pending moves: {pending}")
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print(f" is_move_pending(): {mc.is_move_pending()}")
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# Monitor using poll_until_idle
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print("\n--- Monitoring Y-axis with poll_until_idle() ---")
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print(f"{'Time':>6} {'Y_pos':>10} {'Y_err':>10} {'Pending'}")
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print("-" * 45)
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start_time = time.time()
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movement_detected = False
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while not mc.poll_until_idle(tolerance=0.005, timeout=0.05):
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elapsed = time.time() - start_time
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curr_y = mc.position_y
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if curr_y is not None:
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y_err = curr_y - target_y
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pending = "Y" if mc.is_move_pending() else "-"
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print(f"{elapsed:>5.2f}s {curr_y:>10.4f} {y_err:>+10.4f} {pending:>8}")
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if abs(curr_y - start_y) > 0.01:
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movement_detected = True
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if elapsed > 10.0:
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print("\n** TIMEOUT after 10s **")
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mc.clear_pending_moves()
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break
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# Final status
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elapsed = time.time() - start_time
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final_y = mc.position_y
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print(f"\n--- Y-Axis Move Summary ---")
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print(f"Start position: {start_y:.4f}mm")
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print(f"Target position: {target_y:.4f}mm")
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print(f"Final position: {final_y:.4f}mm" if final_y else "Final position: unknown")
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print(f"Move time: {elapsed:.3f}s")
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if final_y is not None:
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distance_moved = abs(final_y - start_y)
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print(f"Distance moved: {distance_moved:.4f}mm")
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if distance_moved < 0.01:
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print("\n** FAIL: Y-axis did not move at all! **")
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print("Possible causes:")
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print(" 1. Y-axis channel is disabled")
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print(" 2. Y-axis motor driver issue")
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print(" 3. Command not reaching Y-axis bay")
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print(" 4. Mechanical obstruction")
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return False
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elif abs(final_y - target_y) < 0.05:
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print("\n** PASS: Y-axis moved to target **")
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return True
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||||
else:
|
||||
print(f"\n** PARTIAL: Y-axis moved but not to target **")
|
||||
return False
|
||||
|
||||
return movement_detected
|
||||
|
||||
|
||||
def test_enable_and_move_y(mc: MotionController) -> bool:
|
||||
"""
|
||||
Explicitly enable Y-axis channel and attempt movement.
|
||||
"""
|
||||
print("\n" + "="*70)
|
||||
print("ENABLE Y-AXIS AND MOVE TEST")
|
||||
print("="*70)
|
||||
|
||||
# First, explicitly enable Y-axis channel
|
||||
print("\n--- Enabling Y-axis channel (MOD_SET_CHANENABLESTATE) ---")
|
||||
print(f" Sending to dest=0x{mc.DEST_Y_AXIS:02X}, enable=True")
|
||||
|
||||
try:
|
||||
mc.set_channel_enable_state(mc.DEST_Y_AXIS, enabled=True)
|
||||
time.sleep(0.2)
|
||||
print(" Enable command sent")
|
||||
except Exception as e:
|
||||
print(f" Error sending enable: {e}")
|
||||
|
||||
# Verify it's enabled
|
||||
try:
|
||||
y_enabled = mc.get_channel_enable_state(mc.DEST_Y_AXIS, timeout=2.0)
|
||||
print(f" Channel enabled state: {y_enabled}")
|
||||
except Exception as e:
|
||||
print(f" Error checking state: {e}")
|
||||
|
||||
# Request fresh status
|
||||
mc.request_status_update(mc.DEST_Y_AXIS)
|
||||
time.sleep(0.2)
|
||||
|
||||
y_bits = mc.status_bits_y
|
||||
print(f" Status bits: {format_status_bits(y_bits)}")
|
||||
|
||||
# Now try the verbose move test
|
||||
return test_y_axis_move_verbose(mc)
|
||||
|
||||
|
||||
def main():
|
||||
print("="*70)
|
||||
print("BBD202 Stage Diagnostic Test")
|
||||
print("="*70)
|
||||
|
||||
mc = None
|
||||
try:
|
||||
# Connect to controller
|
||||
print("\nConnecting to BBD202 controller...")
|
||||
mc = MotionController()
|
||||
mc.connect(enable_updates=True)
|
||||
print("Connected!")
|
||||
|
||||
# Print diagnostic info
|
||||
print_diagnostic_info(mc)
|
||||
|
||||
# Run bay and channel diagnostics
|
||||
channel_results = test_bay_and_channel_status(mc)
|
||||
|
||||
# Run homing status test
|
||||
homed = test_homing_status(mc)
|
||||
|
||||
if not homed:
|
||||
print("\n" + "-"*70)
|
||||
response = input("Axes not homed. Home now? (y/n): ").strip().lower()
|
||||
if response == 'y':
|
||||
print("\nHoming X-axis...")
|
||||
x_result = mc.home_x_axis(timeout=30.0)
|
||||
print(f"X-axis homing: {'SUCCESS' if x_result else 'FAILED'}")
|
||||
|
||||
print("\nHoming Y-axis...")
|
||||
y_result = mc.home_y_axis(timeout=30.0)
|
||||
print(f"Y-axis homing: {'SUCCESS' if y_result else 'FAILED'}")
|
||||
|
||||
if not (x_result and y_result):
|
||||
print("\nHoming failed. Cannot continue with movement test.")
|
||||
return 1
|
||||
|
||||
# Re-check homing status
|
||||
test_homing_status(mc)
|
||||
else:
|
||||
print("\nSkipping movement tests (axes not homed)")
|
||||
return 1
|
||||
|
||||
# Run Y-axis verbose test first to diagnose the issue
|
||||
y_axis_ok = test_enable_and_move_y(mc)
|
||||
|
||||
# If Y-axis failed, skip the square pattern
|
||||
if not y_axis_ok:
|
||||
print("\n** Y-axis movement failed - skipping square pattern test **")
|
||||
square_ok = False
|
||||
else:
|
||||
# Run square pattern test
|
||||
square_ok = test_square_pattern(mc, side_length=15.0)
|
||||
|
||||
# Final summary
|
||||
print("\n" + "="*70)
|
||||
print("DIAGNOSTIC SUMMARY")
|
||||
print("="*70)
|
||||
print(f"X-Axis Channel: {'OK' if channel_results['x'].get('communicating') else 'FAIL'}")
|
||||
print(f"Y-Axis Channel: {'OK' if channel_results['y'].get('communicating') else 'FAIL'}")
|
||||
print(f"Homing Status: {'PASS' if homed else 'FAIL'}")
|
||||
print(f"Y-Axis Move: {'PASS' if y_axis_ok else 'FAIL'}")
|
||||
print(f"Square Pattern: {'PASS' if square_ok else 'FAIL/SKIPPED'}")
|
||||
|
||||
if homed and y_axis_ok and square_ok:
|
||||
print("\nAll tests PASSED")
|
||||
return 0
|
||||
else:
|
||||
print("\nSome tests FAILED - see details above")
|
||||
return 1
|
||||
|
||||
except KeyboardInterrupt:
|
||||
print("\n\nTest interrupted by user")
|
||||
return 1
|
||||
except Exception as e:
|
||||
print(f"\nError during test: {e}")
|
||||
import traceback
|
||||
traceback.print_exc()
|
||||
return 1
|
||||
finally:
|
||||
if mc is not None:
|
||||
print("\nDisconnecting from controller...")
|
||||
mc.disconnect()
|
||||
print("Disconnected")
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
sys.exit(main())
|
||||
Reference in New Issue
Block a user