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- """
- LUFA Library
- Copyright (C) Dean Camera, 2014.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
- """
-
- """
- Front-end programmer for the LUFA HID class bootloader.
-
- Usage:
- python hid_bootloader_loader.py <Device> <Input>.hex
-
- Example:
- python hid_bootloader_loader.py at90usb1287 Mouse.hex
-
- Requires the pywinusb (https://pypi.python.org/pypi/pywinusb/) and
- IntelHex (http://bialix.com/intelhex/) libraries.
- """
-
- import sys
- from pywinusb import hid
- from intelhex import IntelHex
-
-
- # Device information table
- device_info_map = dict()
- device_info_map['at90usb1287'] = {'page_size': 256, 'flash_kb': 128}
- device_info_map['at90usb1286'] = {'page_size': 256, 'flash_kb': 128}
- device_info_map['at90usb647'] = {'page_size': 256, 'flash_kb': 64}
- device_info_map['at90usb646'] = {'page_size': 256, 'flash_kb': 64}
- device_info_map['atmega32u4'] = {'page_size': 128, 'flash_kb': 32}
- device_info_map['atmega32u2'] = {'page_size': 128, 'flash_kb': 32}
- device_info_map['atmega16u4'] = {'page_size': 128, 'flash_kb': 16}
- device_info_map['atmega16u2'] = {'page_size': 128, 'flash_kb': 16}
- device_info_map['at90usb162'] = {'page_size': 128, 'flash_kb': 16}
- device_info_map['atmega8u2'] = {'page_size': 128, 'flash_kb': 8}
- device_info_map['at90usb82'] = {'page_size': 128, 'flash_kb': 8}
-
-
- def get_hid_device_handle():
- hid_device_filter = hid.HidDeviceFilter(vendor_id=0x03EB,
- product_id=0x2067)
-
- valid_hid_devices = hid_device_filter.get_devices()
-
- if len(valid_hid_devices) is 0:
- return None
- else:
- return valid_hid_devices[0]
-
-
- def send_page_data(hid_device, address, data):
- # Bootloader page data should be the HID Report ID (always zero) followed
- # by the starting address to program, then one device's flash page worth
- # of data
- output_report_data = [0]
- output_report_data.extend([address & 0xFF, address >> 8])
- output_report_data.extend(data)
-
- hid_device.send_output_report(output_report_data)
-
-
- def program_device(hex_data, device_info):
- hid_device = get_hid_device_handle()
-
- if hid_device is None:
- print("No valid HID device found.")
- sys.exit(1)
-
- try:
- hid_device.open()
- print("Connected to bootloader.")
-
- # Program in all data from the loaded HEX file, in a number of device
- # page sized chunks
- for addr in range(0, hex_data.maxaddr(), device_info['page_size']):
- # Compute the address range of the current page in the device
- current_page_range = range(addr, addr+device_info['page_size'])
-
- # Extract the data from the hex file at the specified start page
- # address and convert it to a regular list of bytes
- page_data = [hex_data[i] for i in current_page_range]
-
- print("Writing address 0x%04X-0x%04X" % (current_page_range[0], current_page_range[-1]))
-
- # Devices with more than 64KB of flash should shift down the page
- # address so that it is 16-bit (page size is guaranteed to be
- # >= 256 bytes so no non-zero address bits are discarded)
- if device_info['flash_kb'] < 64:
- send_page_data(hid_device, addr, page_data)
- else:
- send_page_data(hid_device, addr >> 8, page_data)
-
- # Once programming is complete, start the application via a dummy page
- # program to the page address 0xFFFF
- print("Programming complete, starting application.")
- send_page_data(hid_device, 0xFFFF, [0] * device_info['page_size'])
-
- finally:
- hid_device.close()
-
-
- if __name__ == '__main__':
- # Load the specified HEX file
- try:
- hex_data = IntelHex(sys.argv[2])
- except:
- print("Could not open the specified HEX file.")
- sys.exit(1)
-
- # Retrieve the device information entry for the specified device
- try:
- device_info = device_info_map[sys.argv[1]]
- except:
- print("Unknown device name specified.")
- sys.exit(1)
-
- program_device(hex_data, device_info)
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