btchip-python

from btchip.btchipComm import DongleUSB from btchip.btchip import btchip # NOTE: This library is for the *original* Ledger Nano hardware wallet, # NOT for Ledger Nano S/X/Stax. For modern devices, use 'ledger-python'. # # Requires the original Ledger Nano to be connected and proper USB HID # permissions (e.g., udev rules on Linux). dongle = None try: # Initialize the USB dongle communication (timeout in ms) # DongleUSB() without args tries to autodetect original Nano. dongle = DongleUSB(timeout=5000) # Initialize the btchip interface with the dongle interface = btchip(dongle) # Example: Get firmware version firmware_version_response = interface.getFirmwareVersion() # getFirmwareVersion returns a BtchipFirmware object, which __str__ outputs 'VERSION_STRING STATUS_WORD' firmware_version = str(firmware_version_response).split(' ')[0] # Extract only the version string print(f"Successfully connected to original Ledger Nano.") print(f"Device Firmware Version: {firmware_version}") except Exception as e: print(f"Failed to connect to original Ledger Nano: {e}") print("\nTroubleshooting:") print("- Ensure the original Ledger Nano is connected.") print("- On Linux, ensure appropriate udev rules are in place for Ledger HID devices.") print("- Verify 'hidapi' is correctly installed with its system dependencies.") print("- Remember: This library does NOT work with Ledger Nano S/X/Stax.") finally: if dongle: dongle.close()