17 CAN

CAN Mode

These commands are available to manage operations on the CAN bus.
They allow you to configure and interact with the CAN bus via the MCP2515 module.

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🧩 Commands

Arguments in < > are required, while arguments in [ ] are optional.

Command	Description
sniff	Captures and display all CAN frames
send [id]	Send a CAN frame with the specified ID
receive [id]	Wait for CAN frames with the specified ID
status	Show MCP2515 controller status and error flags
config	Configure CAN speed (kbps), pins, and settings

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📝 Notes

• The config command allows setting:
• CAN speed in kbps (e.g. 125, 250, 500, 1000)
• The CAN speed will be automatically adjusted to the closest supported bitrate.
• CS, SO, SI, SCK pins (for CAN module MCP2515)
• The default CS pin is locked for the device and can't be changed.
• send accepts up to 8 bytes as hexadecimal input, separated by spaces (AA BB 01...)
• receive filters by a specific frame ID.
• MCP2515 Pinout
• 

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📌 Example Usage

mode can        # Switch to CAN mode
config          # Configure bitrate and pins
sniff           # Captures all CAN frames
send 0x123      # Prompt frame data to send with frame ID 0x123
send            # Prompt frame ID and frame DATA to send
receive         # Prompt for frame ID and capture frames with specified ID
receive 0x123   # Wait for framess ith ID 0x123
status          # Check controller status and errors

🔧 Hardware