Minor fixes

boards/esp32vn-iot-uno.json

@@ -7,7 +7,7 @@
     "flash_mode": "dio",
     "ldscript": "esp32_out.ld",
     "mcu": "esp32",
-    "variant": "esp32vn-iot-uno"
+    "variant": "esp32vn_iot_uno"
   },
   "connectivity": [
     "wifi",

builder/main.py

@@ -89,8 +89,8 @@ env.Replace(
     CFLAGS=["-std=gnu99"],
 
     CCFLAGS=[
-        "%s" % "-Os" if env.subst("$PIOFRAMEWORK") == "arduino" else "-Og",
-        "-g3",
+        "-Os",
+        "-Wall",
         "-nostdlib",
         "-Wpointer-arith",
         "-Wno-error=unused-but-set-variable",