js key -> ps2 keycodes

2 files changed, 57 insertions, 2 deletions

diff --git a/kvmd/kvmd/ps2.py b/kvmd/kvmd/ps2.py
index 0820c13b..84e51fcf 100644
--- a/kvmd/kvmd/ps2.py
+++ b/kvmd/kvmd/ps2.py
@@ -20,11 +20,65 @@ class _KeyEvent(NamedTuple):
 
 
 def _key_event_to_ps2_codes(event: _KeyEvent) -> List[int]:
+    # https://techdocs.altium.com/display/FPGA/PS2+Keyboard+Scan+Codes
+    # http://www.vetra.com/scancodes.html
+
     get_logger().info(str(event))
-    return []  # TODO
+
+    if event.key == "PrintScreen":
+        return ([0xE0, 0x12, 0xE0, 0x7C] if event.state else [0xE0, 0xF0, 0x7C, 0xE0, 0xF0, 0x12])
+    # TODO: pause/break
+    else:
+        codes = {
+            "Escape":    [0x76],       "Backspace":  [0x66],
+            "Tab":       [0x0D],       "Enter":      [0x5A],
+            "Insert":    [0xE0, 0x70], "Delete":     [0xE0, 0x71],
+            "Home":      [0xE0, 0x6C], "End":        [0xE0, 0x69],
+            "PageUp":    [0xE0, 0x7D], "PageDown":   [0xE0, 0x7A],
+            "ArrowLeft": [0xE0, 0x6B], "ArrowRight": [0xE0, 0x74],
+            "ArrowUp":   [0xE0, 0x75], "ArrowDown":  [0xE0, 0x72],
+
+            "CapsLock":    [0x58],
+            "ScrollLock":  [0x7E],       "NumLock":      [0x77],
+            "ShiftLeft":   [0x12],       "ShiftRight":   [0x59],
+            "ControlLeft": [0x14],       "ControlRight": [0xE0, 0x14],
+            "AltLeft":     [0x11],       "AltRight":     [0xE0, 0x11],
+            "MetaLeft":    [0xE0, 0x1F], "MetaRight":    [0xE0, 0x27],
+
+            "Backquote":   [0x0E], "Minus":        [0x4E], "Equal":     [0x55], "Space":     [0x29],
+            "BracketLeft": [0x54], "BracketRight": [0x5B], "Semicolon": [0x4C], "Quote":     [0x52],
+            "Comma":       [0x41], "Period":       [0x49], "Slash":     [0x4A], "Backslash": [0x5D],
+
+            "Digit1": [0x16], "Digit2": [0x1E], "Digit3": [0x26], "Digit4": [0x25], "Digit5": [0x2E],
+            "Digit6": [0x36], "Digit7": [0x3D], "Digit8": [0x3E], "Digit9": [0x46], "Digit0": [0x45],
+
+            "KeyQ": [0x15], "KeyW": [0x1D], "KeyE": [0x24], "KeyR": [0x2D], "KeyT": [0x2C],
+            "KeyY": [0x35], "KeyU": [0x3C], "KeyI": [0x43], "KeyO": [0x44], "KeyP": [0x4D],
+            "KeyA": [0x1C], "KeyS": [0x1B], "KeyD": [0x23], "KeyF": [0x2B], "KeyG": [0x34],
+            "KeyH": [0x33], "KeyJ": [0x3B], "KeyK": [0x42], "KeyL": [0x4B], "KeyZ": [0x1A],
+            "KeyX": [0x22], "KeyC": [0x21], "KeyV": [0x2A], "KeyB": [0x32], "KeyN": [0x31],
+            "KeyM": [0x3A],
+
+            "F1": [0x05], "F2":  [0x06], "F3":  [0x04], "F4":  [0x0C],
+            "F5": [0x03], "F6":  [0x0B], "F7":  [0x83], "F8":  [0x0A],
+            "F9": [0x01], "F10": [0x09], "F11": [0x78], "F12": [0x07],
+
+            # TODO: keypad
+        }.get(event.key, [])
+        if codes:
+            if not event.state:
+                assert 1 <= len(codes) <= 2, (event, codes)
+                if len(codes) == 1:
+                    codes = [0xF0, codes[0]]
+                elif len(codes) == 2:
+                    codes = [codes[0], 0xF0, codes[1]]
+            return codes
+    return []
 
 
 class Ps2Keyboard(multiprocessing.Process):
+    # http://dkudrow.blogspot.com/2013/08/ps2-keyboard-emulation-with-arduino-uno.html
+
     def __init__(self, clock: int, data: int, pulse: float) -> None:
         super().__init__(daemon=True)
 
diff --git a/kvmd/tox.ini b/kvmd/tox.ini
index 18c839f2..ae90a7af 100644
--- a/kvmd/tox.ini
+++ b/kvmd/tox.ini
@@ -34,4 +34,5 @@ deps =
 max-line-length = 160
 # W503 line break before binary operator
 # E227 missing whitespace around bitwise or shift operator
-ignore=W503,E227
+# E241 multiple spaces after
+ignore=W503,E227,E241