hid pinout

configs/kvmd/v1.yaml

@@ -5,8 +5,12 @@ kvmd:
         heartbeat: 3.0
 
     hid:
+        pinout:
+            reset: 4
+
         device: /dev/ttyAMA0
         speed: 115200
+        reset_delay: 0.1
 
     atx:
         pinout:

configs/kvmd/v2.yaml

@@ -5,8 +5,12 @@ kvmd:
         heartbeat: 3.0
 
     hid:
+        pinout:
+            reset: 4
+
         device: /dev/ttyAMA0
         speed: 115200
+        reset_delay: 0.1
 
     atx:
         pinout:

kvmd/__init__.py

@@ -23,8 +23,10 @@ def main() -> None:
         loop = asyncio.get_event_loop()
 
         hid = Hid(
+            reset=int(config["hid"]["pinout"]["reset"]),
             device_path=str(config["hid"]["device"]),
             speed=int(config["hid"]["speed"]),
+            reset_delay=float(config["hid"]["reset_delay"]),
         )
 
         atx = Atx(

kvmd/extras/cleanup/__init__.py

@@ -16,6 +16,7 @@ def main() -> None:
     logger.info("Cleaning up ...")
     with gpio.bcm():
         for (name, pin) in [
+            ("hid_reset", config["hid"]["pinout"]["reset"]),
             ("msd_target", config["msd"]["pinout"]["target"]),
             ("msd_reset", config["msd"]["pinout"]["reset"]),
             ("atx_power_switch", config["atx"]["pinout"]["power_switch"]),

kvmd/hid.py

@@ -14,6 +14,8 @@ import yaml
 import serial
 import setproctitle
 
+from . import gpio
+
 from .logging import get_logger
 
 
@@ -44,17 +46,21 @@ class _MouseWheelEvent(NamedTuple):
     delta_y: int
 
 
-class Hid(multiprocessing.Process):
+class Hid(multiprocessing.Process):  # pylint: disable=too-many-instance-attributes
     def __init__(
         self,
+        reset: int,
         device_path: str,
         speed: int,
+        reset_delay: float,
     ) -> None:
 
         super().__init__(daemon=True)
 
+        self.__reset = gpio.set_output(reset)
         self.__device_path = device_path
         self.__speed = speed
+        self.__reset_delay = reset_delay
 
         self.__pressed_keys: Set[str] = set()
         self.__pressed_mouse_buttons: Set[str] = set()
@@ -67,7 +73,11 @@ class Hid(multiprocessing.Process):
         get_logger().info("Starting HID daemon ...")
         super().start()
 
-    # TODO: add reset or power switching
+    async def reset(self) -> None:
+        async with self.__lock:
+            gpio.write(self.__reset, True)
+            await asyncio.sleep(self.__reset_delay)
+            gpio.write(self.__reset, False)
 
     async def send_key_event(self, key: str, state: bool) -> None:
         if not self.__stop_event.is_set():
@@ -114,6 +124,7 @@ class Hid(multiprocessing.Process):
             else:
                 get_logger().warning("Emergency cleaning up HID events ...")
                 self.__emergency_clear_events()
+            gpio.write(self.__reset, False)
 
     def __unsafe_clear_events(self) -> None:
         for button in self.__pressed_mouse_buttons:

kvmd/server.py

@@ -141,6 +141,8 @@ class Server:  # pylint: disable=too-many-instance-attributes
 
         app.router.add_get("/ws", self.__ws_handler)
 
+        app.router.add_post("/hid/reset", self.__hid_reset_handler)
+
         app.router.add_get("/atx", self.__atx_state_handler)
         app.router.add_post("/atx/click", self.__atx_click_handler)
 
@@ -228,6 +230,12 @@ class Server:  # pylint: disable=too-many-instance-attributes
             return
         await self.__hid.send_mouse_wheel_event(delta_y)
 
+    # ===== HID
+
+    async def __hid_reset_handler(self, _: aiohttp.web.Request) -> aiohttp.web.Response:
+        await self.__hid.reset()
+        return _json()
+
     # ===== ATX
 
     async def __atx_state_handler(self, _: aiohttp.web.Request) -> aiohttp.web.Response:

testenv/kvmd.yaml

@@ -5,8 +5,12 @@ kvmd:
         heartbeat: 3.0
 
     hid:
+        pinout:
+            reset: 4
+
         device: /dev/ttyS10
         speed: 115200
+        reset_delay: 0.1
 
     atx:
         pinout:

web/index.html

@@ -89,6 +89,7 @@
 					<hr>
 					<div class="ctl-dropdown-content-buttons">
 						<button disabled id="stream-reset-button">&bull; Reset stream</button>
+						<button disabled id="hid-reset-button">&bull; Reset keyboard &amp; mouse</button>
 						<button disabled id="msd-reset-button">&bull; Reset mass storage</button>
 					</div>
 				</div>

web/js/hid.js

@@ -42,7 +42,9 @@ function Hid() {
 		window.onblur = __releaseAll;
 
 		__chars_to_codes = __buildCharsToCodes();
-		tools.setOnClick($("pak-button"), __pasteAsKeys);
+		tools.setOnClick($("pak-button"), __clickPasteAsKeysButton);
+
+		tools.setOnClick($("hid-reset-button"), __clickResetButton);
 
 		Array.prototype.forEach.call(document.querySelectorAll("[data-shortcut]"), function(el_shortcut) {
 			tools.setOnClick(el_shortcut, () => __emitShortcut(el_shortcut.getAttribute("data-shortcut").split(" ")));
@@ -55,7 +57,7 @@ function Hid() {
 		__ws = ws;
 		__keyboard.setSocket(ws);
 		__mouse.setSocket(ws);
-		$("pak-text").disabled = $("pak-button").disabled = !ws;
+		$("pak-text").disabled = $("pak-button").disabled = $("hid-reset-button").disabled = !ws;
 	};
 
 	var __releaseAll = function() {
@@ -127,7 +129,7 @@ function Hid() {
 		return chars_to_codes;
 	};
 
-	var __pasteAsKeys = function() {
+	var __clickPasteAsKeysButton = function() {
 		var text = $("pak-text").value.replace(/[^\x00-\x7F]/g, "");  // eslint-disable-line no-control-regex
 		if (text) {
 			var clipboard_codes = [];
@@ -179,5 +181,15 @@ function Hid() {
 		}
 	};
 
+	var __clickResetButton = function() {
+		var http = tools.makeRequest("POST", "/kvmd/hid/reset", function() {
+			if (http.readyState === 4) {
+				if (http.status !== 200) {
+					ui.error("HID reset error:<br>", http.responseText);
+				}
+			}
+		});
+	};
+
 	__init__();
 }