improved hid protocol

hid/Makefile

@@ -1,7 +1,4 @@
 all:
-	@ cat Makefile
-
-build:
 	platformio run
 
 update:
@@ -16,3 +13,6 @@ serial:
 
 clean:
 	rm -rf .pioenvs .piolibdeps
+
+help:
+	@ cat Makefile

hid/src/inline.h

@@ -1,3 +1,4 @@
 #pragma once
 
+
 #define INLINE inline __attribute__((always_inline))

hid/src/main.cpp

@@ -4,6 +4,7 @@
 #include "inline.h"
 #include "keymap.h"
 
+
 #define CMD_SERIAL			Serial1
 #define CMD_SERIAL_SPEED	115200
 
@@ -12,6 +13,8 @@
 #define CMD_MOUSE_RIGHT			0b01000000
 #define CMD_MOUSE_RIGHT_STATE	0b00000100
 
+#define REPORT_INTERVAL 100
+
 
 // -----------------------------------------------------------------------------
 INLINE void cmdResetHid() { // 0 bytes
@@ -80,10 +83,12 @@ void setup() {
 	CMD_SERIAL.begin(CMD_SERIAL_SPEED);
 	BootKeyboard.begin();
 	SingleAbsoluteMouse.begin();
-	CMD_SERIAL.write(0);
 }
 
 void loop() {
+	static unsigned long last_report = 0;
+	bool cmd_processed = false;
+
 	if (CMD_SERIAL.available() >= 5) {
 		switch ((uint8_t)CMD_SERIAL.read()) {
 			case 0: cmdResetHid(); break;
@@ -93,6 +98,16 @@ void loop() {
 			case 4: cmdMouseWheelEvent(); break;
 			default: break;
 		}
+		cmd_processed = true;
+	}
+
+	unsigned long now = millis();
+	if (
+		cmd_processed
+		|| (now >= last_report && now - last_report >= REPORT_INTERVAL)
+		|| (now < last_report && ((unsigned long) -1) - last_report + now >= REPORT_INTERVAL)
+	) {
 		CMD_SERIAL.write(0);
+		last_report = now;
 	}
 }

kvmd/hid.py

@@ -153,13 +153,14 @@ class Hid(multiprocessing.Process):
                             else:
                                 raise RuntimeError("Unknown HID event")
                             hid_ready = False
-                    else:
+
                     if tty.in_waiting:
                         while tty.in_waiting:
                             tty.read(tty.in_waiting)
                         hid_ready = True
                     else:
                         time.sleep(0.05)
+
                     if self.__stop_event.is_set() and self.__queue.qsize() == 0:
                         break
         except Exception: