fw: Add update_espressif_blobs.py

This script does not depend on west and is able to load the Espressif
blobs to the Espressif HAL module.

1 files changed, 57 insertions, 0 deletions

diff --git a/fw/update_espressif_blobs.py b/fw/update_espressif_blobs.py
new file mode 100755
index 0000000..55c7582
--- /dev/null
+++ b/fw/update_espressif_blobs.py
@@ -0,0 +1,57 @@
+#!/usr/bin/env python3
+
+
+import hashlib
+import sys
+import pathlib
+import urllib.request
+
+import yaml
+
+
+SCRIPT = pathlib.Path(__file__)
+FW = SCRIPT.parent
+ESPRESSIF_MODULE = FW / "zephyrproject/modules/hal/espressif"
+MODULE_YAML = ESPRESSIF_MODULE / "zephyr/module.yml"
+BLOBS = ESPRESSIF_MODULE / "zephyr/blobs"
+
+
+def main() -> None:
+    text = MODULE_YAML.read_text()
+    data = yaml.safe_load(text)
+
+    for entry in data["blobs"]:
+        url = entry["url"]
+        checksum = entry["sha256"]
+        path = entry["path"]
+        get_blob(
+            url=url,
+            checksum=checksum,
+            path=path,
+        )
+
+
+def get_blob(url, checksum, path):
+    sys.stdout.write(f"Downloading {path} ...")
+    with urllib.request.urlopen(url) as conn:
+        content = conn.read()
+    sys.stdout.write(" done\n")
+
+    sha256 = hashlib.sha256()
+    sha256.update(content)
+    calculated = sha256.hexdigest()
+    if calculated == checksum:
+        print("Checksum matched.")
+    else:
+        print(f"Checksum mismatch for {path}!")
+        print(f"Expected: {checksum}")
+        print(f"Got:      {calculated}")
+
+    target: pathlib.Path = BLOBS / path
+    target.parent.mkdir(exist_ok=True, parents=True)
+    target.write_bytes(content)
+    print(f"Saved to {path}")
+
+
+if __name__ == "__main__":
+    main()