disable serial port for spi

hid/avrdude.py

@@ -1,5 +1,6 @@
 # https://docs.platformio.org/en/latest/projectconf/advanced_scripting.html
 
+
 from os import rename
 from os import symlink
 from os.path import exists

hid/patch.py

@@ -1,5 +1,6 @@
 # https://docs.platformio.org/en/latest/projectconf/advanced_scripting.html
 
+
 from os.path import exists
 from os.path import join
 from os.path import basename
@@ -10,6 +11,12 @@ Import("env")
 
 
 # =====
+def _get_pkg_path(name: str) -> str:
+    path = env.PioPlatform().get_package_dir(name)
+    assert exists(path)
+    return path
+
+
 def _get_libs() -> Dict[str, str]:
     return {
         builder.name: builder.path
@@ -17,15 +24,17 @@ def _get_libs() -> Dict[str, str]:
     }
 
 
-def _patch_lib(lib_path: str, patch_path: str) -> None:
-    assert exists(lib_path)
-    flag_path: str = join(lib_path, f".{basename(patch_path)}.done")
+def _patch(path: str, patch_path: str) -> None:
+    assert exists(path)
+    flag_path: str = join(path, f".{basename(patch_path)}.done")
     if not exists(flag_path):
-        env.Execute(f"patch -p1 -d {lib_path} < {patch_path}")
+        env.Execute(f"patch -p1 -d {path} < {patch_path}")
         env.Execute(lambda *_, **__: open(flag_path, "w").close())
 
 
 # =====
+_patch(_get_pkg_path("framework-arduino-avr"), "patches/serial.patch")
+
 _libs = _get_libs()
 if "HID-Project" in _libs:
-    _patch_lib(_libs["HID-Project"], "patches/absmouse.patch")
+    _patch(_libs["HID-Project"], "patches/absmouse.patch")

hid/patches/serial.patch

@@ -0,0 +1,24 @@
+https://github.com/arduino/Arduino/issues/6387
+--- a/cores/arduino/USBCore.cpp	2019-09-20 15:48:38.000000000 +0300
++++ b/cores/arduino/USBCore.cpp	2020-11-11 19:56:49.233690476 +0300
+@@ -375,8 +375,10 @@
+ {
+ 	u8 i = setup.wIndex;
+ 
++#ifndef NO_SERIAL
+ 	if (CDC_ACM_INTERFACE == i)
+ 		return CDC_Setup(setup);
++#endif
+ 
+ #ifdef PLUGGABLE_USB_ENABLED
+ 	return PluggableUSB().setup(setup);
+@@ -466,7 +468,9 @@
+ {
+ 	u8 interfaces = 0;
+ 
++#ifndef NO_SERIAL
+ 	CDC_GetInterface(&interfaces);
++#endif
+ 
+ #ifdef PLUGGABLE_USB_ENABLED
+ 	PluggableUSB().getInterface(&interfaces);

hid/platformio.ini

@@ -102,6 +102,7 @@ extra_scripts =
 [_cmd_spi]
 build_flags =
 	-DCMD_SPI
+	-DNO_SERIAL
 upload_protocol = custom
 upload_flags =
 	-C