1 files changed, 13 insertions, 0 deletions
diff --git a/lib/esp-idf-lua/examples/vfs/spiffs_image/hex.lua b/lib/esp-idf-lua/examples/vfs/spiffs_image/hex.lua
new file mode 100644
index 00000000..c9e7634e
--- /dev/null
+++ b/lib/esp-idf-lua/examples/vfs/spiffs_image/hex.lua
@@ -0,0 +1,13 @@
+local hex = {}
+
+function hex.dump(buf)
+  for byte=1, #buf, 16 do
+    local chunk = buf:sub(byte, byte+15)
+    io.write(string.format('%08X  ',byte-1))
+    chunk:gsub('.', function (c) io.write(string.format('%02X ',string.byte(c))) end)
+    io.write(string.rep(' ',3*(16-#chunk)))
+    io.write(' ',chunk:gsub('%c','.'),"\n")
+  end
+end
+
+return hex