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0781195c22
The files are downloaded from https://www.rockbox.org/tracker/task/11701 Change-Id: Ic6415f76207868661c231cb534cb179160eb60e0
55 lines
1.3 KiB
Python
55 lines
1.3 KiB
Python
#!/usr/bin/env python
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import sys
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import struct
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import usb
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class rbpms:
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def __init__(self):
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self.handle = usb.core.find(idVendor=0xffff, idProduct=0xa112)
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if self.handle is None:
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raise Exception("Could not find specified device")
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self.handle.set_configuration()
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print("Connected to Rockbox Post-Mortem Stub on iPod Nano 2G")
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@staticmethod
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def __myprint(data):
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sys.stdout.write(data)
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sys.stdout.flush()
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def read(self, offset, size):
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if offset & 15 != 0:
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raise Exception("Unaligned data read!")
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data = ""
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while True:
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blocklen = size
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if blocklen == 0: break
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if blocklen > 256 * 1024: blocklen = 256 * 1024
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self.handle.write(4, struct.pack("<II", offset, blocklen), 0, 100)
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block = struct.unpack("%ds" % blocklen, self.handle.read(0x83, blocklen, 0, 1000))[0]
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offset += blocklen
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data += block
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size -= blocklen
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return data
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def download(self, offset, size, file):
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self.__myprint("Downloading 0x%x bytes from 0x%8x to %s..." % (size, offset, file))
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f = open(file, "wb")
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while True:
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blocklen = size
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if blocklen == 0: break
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if blocklen > 2048 * 1024: blocklen = 2048 * 1024
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f.write(self.read(offset, blocklen))
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offset += blocklen
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size -= blocklen
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self.__myprint(".")
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self.__myprint(" done\n")
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