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Refactor the new Python HID bootloader host application code.

This commit is contained in:
Dean Camera 2013-07-07 17:09:10 +02:00
parent 6e79c3ecaf
commit ebc0d8bc94
1 changed files with 36 additions and 17 deletions
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53
Bootloaders/HID/HostLoaderApp_Python/hid_bootloader_loader.py
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@ -23,19 +23,20 @@ import sys
import pywinusb.hid as 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}
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():
@ -51,6 +52,9 @@ def get_hid_device_handle():
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)
@ -58,7 +62,7 @@ def send_page_data(hid_device, address, data):
hid_device.send_output_report(output_report_data)
def main(hex_filename, device_info):
def program_device(hex_data, device_info):
hid_device = get_hid_device_handle()
if hid_device is None:
@ -67,21 +71,30 @@ def main(hex_filename, device_info):
try:
hid_device.open()
print("Connected to bootloader.")
hex_data = IntelHex(hex_filename)
# 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']):
page_data = [hex_data[i] for i in range(addr, addr+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'])
print("Writing address 0x%04X-0x%04X" % (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'])
@ -90,12 +103,18 @@ def main(hex_filename, device_info):
if __name__ == '__main__':
hex_filename = sys.argv[2]
# 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)
main(hex_filename, device_info)
program_device(hex_data, device_info)