add circuitpython code

1 files changed, 24 insertions, 0 deletions

diff --git a/circuitpython/tools/join_bins.py b/circuitpython/tools/join_bins.py
new file mode 100644
index 0000000..a370f86
--- /dev/null
+++ b/circuitpython/tools/join_bins.py
@@ -0,0 +1,24 @@
+# SPDX-FileCopyrightText: 2014 MicroPython & CircuitPython contributors (https://github.com/adafruit/circuitpython/graphs/contributors)
+#
+# SPDX-License-Identifier: MIT
+
+import sys
+
+output_filename = sys.argv[1]
+input_filenames = {}
+i = 2
+while i < len(sys.argv):
+    offset = int(sys.argv[i], 16)
+    filename = sys.argv[i + 1]
+    input_filenames[offset] = filename
+    i += 2
+
+with open(output_filename, "wb") as output_file:
+    offsets = sorted(input_filenames.keys())
+    for offset in offsets:
+        input_filename = input_filenames[offset]
+        # Fill with ones to save NOR flash.
+        while output_file.tell() < offset:
+            output_file.write(b"\xff")
+        with open(input_filename, "rb") as input_file:
+            output_file.write(input_file.read())