Project 1

1)

Certainly! Here's an example of a Python program that logs CAN data from one or more CAN buses and sorts the messages into separate log files based on their arbitration IDs (ARB ID). The even ARB ID messages are stored in the "Even Logs" directory, and the odd ARB ID messages are stored in the "Odd Logs" directory. Each log file contains up to 1000 messages, and the program runs indefinitely until manually stop.

# Create the "Even Logs" and "Odd Logs" directories if they don't exist
log_dir = "Even Logs"
os.makedirs(log_dir, exist_ok=True)
log_dir = "Odd Logs"
os.makedirs(log_dir, exist_ok=True)

# Initialize CAN bus interface(s)
bus = can.interface.Bus(channel='can0', bustype='socketcan')

# Initialize log counters
even_log_count = 0
odd_log_count = 0

# Infinite loop to log CAN data
while True:
# Receive a CAN message
message = bus.recv()

# Determine if the ARB ID is even or odd
if message.arbitration_id % 2 == 0:
log_dir = "Even Logs"
log_count = even_log_count
else:
log_dir = "Odd Logs"
log_count = odd_log_count

# Check if the log file limit is reached
if log_count >= 1000:
log_count = 0 # Reset the log count
if message.arbitration_id % 2 == 0:
even_log_count = 0 # Reset even log count
else:
odd_log_count = 0 # Reset odd log count

# Create a new log file if the count is zero
if log_count == 0:
log_count += 1
log_filename = os.path.join(log_dir, f"log_{message.arbitration_id}_{log_count}.log")
log_file = open(log_filename, "w")
else:
log_count += 1

# Write the CAN message to the log file
log_file.write(str(message) + "\n")

# Close the log file if the limit is reached
if log_count >= 1000:
log_file.close()

# Update the log counts
if message.arbitration_id % 2 == 0:
even_log_count = log_count
else:
odd_log_count = log_count
```

Before running the program, make sure you have the `python-can` library installed (`pip install python-can`). Adjust the `channel` parameter in the `can.interface.Bus()` constructor to match the desired CAN bus interface (e.g., `can0`, `can1`, etc.).

Ensure that you have the appropriate permissions to create directories and write files in the specified locations (`Even Logs` and `Odd Logs`). The program will continuously log CAN messages into separate log files based on their ARB IDs, storing them in the respective directories. Each log file will contain up to 1000 messages before a new file is created.

You can run this program in the background on a Linux machine using the command `python3 can_logger.py &` to keep it running indefinitely until manually stopped.