1 files changed, 25 insertions, 0 deletions
diff --git a/ports/esp32/makeimg.py b/ports/esp32/makeimg.py
new file mode 100644
index 000000000..aeedbff7e
--- /dev/null
+++ b/ports/esp32/makeimg.py
@@ -0,0 +1,25 @@
+import sys
+
+OFFSET_BOOTLOADER = 0x1000
+OFFSET_PARTITIONS = 0x8000
+OFFSET_APPLICATION = 0x10000
+
+files_in = [
+    ('bootloader', OFFSET_BOOTLOADER, sys.argv[1]),
+    ('partitions', OFFSET_PARTITIONS, sys.argv[2]),
+    ('application', OFFSET_APPLICATION, sys.argv[3]),
+]
+file_out = sys.argv[4]
+
+cur_offset = OFFSET_BOOTLOADER
+with open(file_out, 'wb') as fout:
+    for name, offset, file_in in files_in:
+        assert offset >= cur_offset
+        fout.write(b'\xff' * (offset - cur_offset))
+        cur_offset = offset
+        with open(file_in, 'rb') as fin:
+            data = fin.read()
+            fout.write(data)
+            cur_offset += len(data)
+            print('%-12s% 8d' % (name, len(data))) 
+    print('%-12s% 8d' % ('total', cur_offset))