pre uc480 integration
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Thomas Ales [M S E]
Executable
+217
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#!/usr/bin/env python3
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"""
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Helios Laser Serial Communication Diagnostic Tool
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Helps troubleshoot communication issues with the Helios laser.
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"""
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import serial
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import time
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import sys
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def test_port(port, baudrate=9600):
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"""Test basic communication on a serial port."""
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print(f"\n{'='*60}")
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print(f"Testing {port} at {baudrate} baud")
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print(f"{'='*60}")
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try:
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ser = serial.Serial(
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port=port,
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baudrate=baudrate,
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bytesize=serial.EIGHTBITS,
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parity=serial.PARITY_NONE,
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stopbits=serial.STOPBITS_ONE,
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timeout=1.0
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)
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print(f"✓ Port opened successfully")
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time.sleep(0.1)
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# Try to query the controller serial number
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print("\nSending: 'SN?'")
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ser.write(b'SN?\r')
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time.sleep(0.5)
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response = ser.readline().decode('ascii', errors='replace').strip()
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print(f"Response: '{response}'")
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if response:
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print(f"✓ Got response: {response}")
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return True, response
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else:
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print(f"✗ No response received")
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# Try head serial number
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print("\nSending: 'HSN?'")
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ser.write(b'HSN?\r')
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time.sleep(0.5)
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response = ser.readline().decode('ascii', errors='replace').strip()
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print(f"Response: '{response}'")
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if response:
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print(f"✓ Got response: {response}")
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ser.close()
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return True, response
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else:
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print(f"✗ No response received")
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# Try laser enable status
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print("\nSending: 'LE?'")
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ser.write(b'LE?\r')
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time.sleep(0.5)
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response = ser.readline().decode('ascii', errors='replace').strip()
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print(f"Response: '{response}'")
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if response:
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print(f"✓ Got response: {response}")
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ser.close()
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return True, response
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else:
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print(f"✗ No response received")
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ser.close()
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return False, "No response to any query"
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except Exception as e:
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print(f"✗ Error: {e}")
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return False, str(e)
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def test_raw_communication(port, baudrate=9600):
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"""Test raw serial communication and display hex."""
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print(f"\n{'='*60}")
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print(f"Raw Communication Test: {port} at {baudrate} baud")
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print(f"{'='*60}")
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try:
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ser = serial.Serial(
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port=port,
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baudrate=baudrate,
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bytesize=serial.EIGHTBITS,
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parity=serial.PARITY_NONE,
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stopbits=serial.STOPBITS_ONE,
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timeout=2.0
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)
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print(f"✓ Port opened successfully")
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time.sleep(0.2)
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# Send a simple query
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command = b'SN?\r'
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print(f"\nSending command (hex): {command.hex()}")
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print(f"Sending command (ascii): {command}")
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ser.write(command)
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time.sleep(0.5)
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# Read response byte by byte
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response = b''
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while True:
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byte = ser.read(1)
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if not byte:
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break
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response += byte
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if byte == b'\n' or byte == b'\r':
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break
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print(f"\nRaw response (hex): {response.hex()}")
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print(f"Raw response (ascii): {response}")
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print(f"Response length: {len(response)} bytes")
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# Check for common issues
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if not response:
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print("✗ No response - device may not be responding or wrong baud rate")
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elif response == b'\r' or response == b'\n':
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print("⚠ Only got line terminator - device may be echoing but not responding to command")
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else:
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print("✓ Got a response!")
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ser.close()
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return True
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except Exception as e:
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print(f"✗ Error: {e}")
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return False
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def test_echo(port, baudrate=9600):
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"""Test if the device echoes commands back."""
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print(f"\n{'='*60}")
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print(f"Echo Test: {port} at {baudrate} baud")
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print(f"{'='*60}")
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try:
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ser = serial.Serial(
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port=port,
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baudrate=baudrate,
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bytesize=serial.EIGHTBITS,
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parity=serial.PARITY_NONE,
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stopbits=serial.STOPBITS_ONE,
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timeout=1.0
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)
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# Send a test character
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test_char = b'T'
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print(f"Sending test character: {test_char}")
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ser.write(test_char)
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time.sleep(0.1)
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echo = ser.read(1)
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if echo == test_char:
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print(f"✓ Device echoes input")
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elif echo:
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print(f"⚠ Device sent something but not the same: {echo}")
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else:
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print(f"✗ No echo")
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ser.close()
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return True
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except Exception as e:
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print(f"✗ Error: {e}")
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return False
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def main():
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"""Run diagnostic tests."""
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port = "/dev/ttyUSB2"
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if len(sys.argv) > 1:
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port = sys.argv[1]
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print(f"\n{'#'*60}")
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print(f"# Helios Laser Serial Diagnostic Tool")
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print(f"# Testing port: {port}")
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print(f"{'#'*60}")
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# Test standard baud rate
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success, response = test_port(port, 9600)
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if not success:
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print("\n" + "="*60)
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print("Standard baud rate (9600) failed. Trying alternatives...")
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print("="*60)
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# Try other common baud rates
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for baudrate in [115200, 19200, 4800, 2400]:
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success, response = test_port(port, baudrate)
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if success:
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print(f"\n✓ SUCCESS! Device responds at {baudrate} baud")
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break
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else:
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print(f"\n✓ SUCCESS! Device responds at 9600 baud")
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# Run additional diagnostics
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print("\n")
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test_raw_communication(port, 9600)
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print("\n")
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test_echo(port, 9600)
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print(f"\n{'#'*60}")
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print("# Diagnostic Tests Complete")
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print(f"{'#'*60}\n")
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if __name__ == "__main__":
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main()
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