Enhance CAN bus scripts with argparse and error handling

- Improved error handling in `python_enable_motor.py` by capturing and displaying exception details.
- Ensured proper CAN bus shutdown in `python_enable_motor.py` with a `finally` block.
- Refactored `python_send_angle.py` to accept a command-line argument for the target angle instead of looping indefinitely.
- Refactored `python_send_velocity.py` to accept a command-line argument for target speed and removed infinite loops for better usability.
- Added `send_velocity_impulses.py`, a new script to send alternating velocity impulses over the CAN bus.

controller/fw/embed/test/python_send_angle.py

@@ -1,6 +1,7 @@
 import can
 import struct
 import time
+import argparse
 
 # Function to send the target angle
 def send_target_angle(bus, target_angle):
@@ -17,18 +18,20 @@ def send_target_angle(bus, target_angle):
     except can.CanError:
         print("Message failed to send")
 
+# Main function
 def main():
+    parser = argparse.ArgumentParser(description="Send target angles over CAN bus.")
+    parser.add_argument("--angle", type=float, required=True, help="Target angle to send over the CAN bus")
+    args = parser.parse_args()
+
+    target_angle = args.angle
+
     # CAN interface setup
     bus = can.interface.Bus(channel='can0', bustype='socketcan', bitrate=1000000)  # Ensure the bitrate matches the microcontroller settings
     print("CAN bus initialized, sending target angles...")
 
-    # Target angle
-    target_angle = 0.0
-
     # Loop to send messages
-    while True:
-        send_target_angle(bus, target_angle)
-        time.sleep(1)  # Delay before sending the next message
+    send_target_angle(bus, target_angle)
 
 if __name__ == '__main__':
     main()