Bootloaders/HID/HostLoaderApp_Python/hid_bootloader_loader.py

   1 """
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2013.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 """
   8
   9 """
  10     Front-end programmer for the LUFA HID class bootloader.
  11
  12     Usage:
  13         python hid_bootloader_loader.py <Device> <Input>.hex
  14
  15     Example:
  16         python hid_bootloader_loader.py at90usb1287 Mouse.hex
  17
  18     Requires the pywinusb (https://pypi.python.org/pypi/pywinusb/) and
  19     IntelHex (http://bialix.com/intelhex/) libraries.
  20 """
  21
  22 import sys
  23 import pywinusb.hid as hid
  24 from intelhex import IntelHex
  25
  26 # Device information table
  27 device_info_map = dict()
  28 device_info_map['at90usb1287'] = {'page_size': 256, 'flash_kb': 128}
  29 device_info_map['at90usb1286'] = {'page_size': 256, 'flash_kb': 128}
  30 device_info_map['at90usb647']  = {'page_size': 256, 'flash_kb': 64}
  31 device_info_map['at90usb646']  = {'page_size': 256, 'flash_kb': 64}
  32 device_info_map['atmega32u4']  = {'page_size': 128, 'flash_kb': 32}
  33 device_info_map['atmega32u2']  = {'page_size': 128, 'flash_kb': 32}
  34 device_info_map['atmega16u4']  = {'page_size': 128, 'flash_kb': 16}
  35 device_info_map['atmega16u2']  = {'page_size': 128, 'flash_kb': 16}
  36 device_info_map['at90usb162']  = {'page_size': 128, 'flash_kb': 16}
  37 device_info_map['atmega8u2']   = {'page_size': 128, 'flash_kb': 8}
  38 device_info_map['at90usb82']   = {'page_size': 128, 'flash_kb': 8}
  39
  40
  41 def get_hid_device_handle():
  42     hid_device_filter = hid.HidDeviceFilter(vendor_id=0x03EB,
  43                                             product_id=0x2067)
  44
  45     valid_hid_devices = hid_device_filter.get_devices()
  46
  47     if len(valid_hid_devices) is 0:
  48         return None
  49     else:
  50         return valid_hid_devices[0]
  51
  52
  53 def send_page_data(hid_device, address, data):
  54     output_report_data = [0]
  55     output_report_data.extend([address & 0xFF, address >> 8])
  56     output_report_data.extend(data)
  57
  58     hid_device.send_output_report(output_report_data)
  59
  60
  61 def main(hex_filename, device_info):
  62     hid_device = get_hid_device_handle()
  63
  64     if hid_device is None:
  65         print("No valid HID device found.")
  66         sys.exit(1)
  67
  68     try:
  69         hid_device.open()
  70
  71         print("Connected to bootloader.")
  72
  73         hex_data = IntelHex(hex_filename)
  74
  75         for addr in range(0, hex_data.maxaddr(), device_info['page_size']):
  76             page_data = [hex_data[i] for i in range(addr, addr+device_info['page_size'])]
  77
  78             print("Writing address 0x%04X-0x%04X" % (addr, addr+device_info['page_size']))
  79
  80             if device_info['flash_kb'] < 64:
  81                 send_page_data(hid_device, addr, page_data)
  82             else:
  83                 send_page_data(hid_device, addr >> 8, page_data)
  84
  85         print("Programming complete, starting application.")
  86         send_page_data(hid_device, 0xFFFF, [0] * device_info['page_size'])
  87
  88     finally:
  89         hid_device.close()
  90
  91
  92 if __name__ == '__main__':
  93     hex_filename = sys.argv[2]
  94
  95     try:
  96         device_info = device_info_map[sys.argv[1]]
  97     except:
  98         print("Unknown device name specified.")
  99         sys.exit(1)
 100
 101     main(hex_filename, device_info)