arduino hid: fixed mouse movement on windows

hid/Makefile

@@ -10,7 +10,7 @@ upload:
 
 clean-all: clean
 clean:
-	rm -rf .pioenvs .piolibdeps
+	rm -rf .pio
 
 help:
 	@ cat Makefile

hid/patch.py

@@ -0,0 +1,18 @@
+from os.path import join
+from os.path import exists
+
+Import("env")
+
+
+# =====
+env_path = join(env["PROJECTLIBDEPS_DIR"], env["PIOENV"])
+flag_path = join(env_path, ".patched")
+
+if not exists(flag_path):
+    env.Execute(f"patch -p1 -d {join(env_path, 'HID-Project_ID523')} < {join('patches', 'absmouse.patch')}")
+
+    def touch_flag(*_, **__) -> None:
+        with open(flag_path, "w") as flag_file:
+            pass
+
+    env.Execute(touch_flag)

hid/patches/absmouse.patch

@@ -0,0 +1,12 @@
+See /kvmd/apps/otg/hid/keyboard.py for details
+--- a/src/SingleReport/SingleAbsoluteMouse.cpp	2019-07-13 21:16:23.000000000 +0300
++++ b/src/SingleReport/SingleAbsoluteMouse.cpp	2019-10-05 00:58:34.592003332 +0300
+@@ -43,7 +43,7 @@
+     0x05, 0x01,                      /*     USAGE_PAGE (Generic Desktop) */
+     0x09, 0x30,                      /*     USAGE (X) */
+     0x09, 0x31,                      /*     USAGE (Y) */
+-	0x16, 0x00, 0x80,				 /* 	Logical Minimum (-32768) */
++	0x16, 0x00, 0x00,				 /* 	Logical Minimum (0) */
+ 	0x26, 0xFF, 0x7F,				 /* 	Logical Maximum (32767) */
+ 	0x75, 0x10,						 /* 	Report Size (16), */
+ 	0x95, 0x02,						 /* 	Report Count (2), */

hid/platformio.ini

@@ -20,6 +20,7 @@ framework = arduino
 upload_port = /dev/ttyACM0
 lib_deps = ${common.lib_deps}
 build_flags = -DCMD_SERIAL=Serial1
+extra_scripts = post:patch.py
 
 [env:serial_test]
 platform = atmelavr
@@ -28,3 +29,4 @@ framework = arduino
 upload_port = /dev/ttyACM0
 lib_deps = ${common.lib_deps}
 build_flags = -DCMD_SERIAL=Serial
+extra_scripts = post:patch.py

hid/src/main.cpp

@@ -98,9 +98,11 @@ INLINE void cmdMouseButtonEvent(const uint8_t *buffer) { // 1 byte
 INLINE void cmdMouseMoveEvent(const uint8_t *buffer) { // 4 bytes
 	int x = (int)buffer[0] << 8;
 	x |= (int)buffer[1];
+	x = (x + 32768) / 2; // See /kvmd/apps/otg/hid/keyboard.py for details
 
 	int y = (int)buffer[2] << 8;
 	y |= (int)buffer[3];
+	y = (y + 32768) / 2; // See /kvmd/apps/otg/hid/keyboard.py for details
 
 	SingleAbsoluteMouse.moveTo(x, y);
 }