X-Git-Url: http://git.code-monkey.de/?a=blobdiff_plain;f=tools%2Fupdate-firmware;h=306674031a8784291cc5c7d82430fe3a0d7c0f02;hb=c017864cc96e65ced1eece625d41877c0c834f34;hp=f610343f37c8ba1fb672b73e49ac37c2fde44841;hpb=6c782c1ea136dd3968ae611a61bd5512cf5c009e;p=gps-watch.git

diff --git a/tools/update-firmware b/tools/update-firmware
index f610343..3066740 100755
--- a/tools/update-firmware
+++ b/tools/update-firmware
@@ -1,4 +1,25 @@
 #!/usr/bin/env python3
+#
+# Copyright (c) 2019-2020 Tilman Sauerbeck (tilman at code-monkey de)
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 import argparse
 import serial
@@ -168,6 +189,13 @@ class Application:
                 sys.stderr.write('File too large.\n')
                 return 3
 
+            # The bootloader only accepts chunks whose size is word-aligned:
+            num_extra = len(chunks[-1]) & 3
+
+            if num_extra != 0:
+                num_pad = 4 - extra
+                chunks[-1] += b'\xff' * num_pad
+
         # Defaulting to zero seems too dangerous:
         if self._offset is None:
             sector0 = None