Mini clavier pour XBMC

Projet réalisé par fma38.

Abandonné

Présentation

Il s'agit de développer un mini-clavier dédié pour contrôler quelques fonctions de base de XBMC, principalement celles en relation avec les divers players audio (CD, mp3, web radios...), afin d'éviter d'allumer l'écran principal. Un petit écran LCD est prévu pour compléter ce clavier.

Pour ça, on va utiliser un petit Teensy 2.0 en mode émulation clavier, avec quelques touches (max 20) connectées sur ses entrées.

Raccourcis claviers standards

Liste des raccourcis standards définis dans XBMC :

Key	Global	Video playback	Music visualisation	Slide show
A		Audio offset
C	Contextual menu
F	Fast forward	Fast forward	Fast forward
I	Info	Info	Info
L		Next subtitle	Lock preset
M	Player controls (OSD)	Player controls (OSD)	Player controls (OSD)
N			"Now playing" playlist
O	Displays CPU usage & video diagnostic info	Codec info	Codec/Visualisation info	Info (EXIF data)
P	Play	Play	Visualisation preset list	Start slideshow
Q	Queue
R	Rewind	Rewind	Rewind	Rotate
S	Shutdown menu		Show preset
T		Toggle subtitles on and off
V			Visualisation settings
W	Marked as watched / unwatched
X	Stop	Stop	Stop
Z		Zoom/aspect ratio
0				Zoom Normal (100%)
1				Zoom Level 1
2				Zoom Level 2
3				Zoom Level 3
4				Zoom Level 4
5				Zoom Level 5
6				Zoom Level 6
7				Zoom Level 7
8				Zoom Level 8
9				Zoom Level 9
Space	Pause/Play	Pause/Play	Pause/Play
Left	Left	Step back	Previous	Previous picture
Right	Right	Step forward	Next	Next picture
Up	Up	Big step forward	Increase rating
Down	Down	Big step back	Decrease rating
PageUp	Page up
PageDown	Page down
Enter	Select	Player controls (OSD)	Player controls (OSD)
Backspace	Back
Esc	Previous menu	Exit full screen
.	Skip forward	Skip forward	Skip forward	Next picture
,	Skip backward	Skip backward	Skip backward	Previous picture
'		Small step back (7sec)
Tab	Fullscreen mode	Fullscreen mode	Fullscreen mode
PrintSrc	Screenshot	Screenshot	Screenshot
-	Volume down	Volume down	Volume down	Zoom out
+	Volume up	Volume up	Volume up	Zoom in
=	Volume up	Volume up	Volume up	Zoom in
\	Toggle application windowed mode	Toggle application windowed mode	Toggle application windowed mode
[		Big step forward, or next chapter
]		Big step backward, or previous chapter
Shift+LETTER	Jump to that letter in a list

Touches dédiées

Touches implémentées sur le mini clavier :

Key	Global	Video playback	Music visualisation	Slide show	Mini clavier
C	Contextual menu				Menu (?)
F	Fast forward	Fast forward	Fast forward		>>
I	Info	Info	Info		INFO
M	Player controls (OSD)	Player controls (OSD)	Player controls (OSD)		Menu (?)
N			Now playing playlist
O	Displays CPU usage & video diagnostic info	Codec info	Codec/Visualisation info	Info (EXIF data)	INFO
P	Play	Play	Visualisation preset list	Start slideshow	>
R	Rewind	Rewind	Rewind	Rotate	<<
X	Stop	Stop	Stop		STOP
Space	Pause/Play	Pause/Play	Pause/Play		> / I I
Left	Left	Step back 10"	Previous	Previous picture	<
Right	Right	Step forward 10"	Next	Next picture	>
Up	Up	Big step forward 1'	Increase rating		^
Down	Down	Big step back 1'	Decrease rating		v
Enter	Select	Player controls (OSD)	Player controls (OSD)		OK
Backspace	Back				BACK
Esc	Previous menu	Exit full screen			ESC
Tab	Fullscreen mode	Fullscreen mode	Fullscreen mode		FULL

À voir :

• utilisation d'un potar incrémental (quelles touches mapper ?)
• touches custom (eject, mymusic, myvideo...) -> nécessite plugin ?

Hardware

Un simple Teensy 2.0 suffit ; il dispose de 25 I/O.

Firmware

Test (merci à Edgar pour la simplification du code) :

Cliquer sur le bouton à droite pour faire apparaître/disparaître le code...

// XBMC mini-keyboard and IR receiver
 
#include <Bounce.h>
#include <IRremote.h>
 
const uint8_t PIN_IR_RECV = 0;
const uint8_t PIN_LED = 11;
 
// A key is a debounced button with an associated keycode.
struct KbdKey : public Bounce
{
  KbdKey(uint16_t code, uint8_t pin) : Bounce(pin, 10), keycode(code) {
    pinMode(pin, INPUT_PULLUP);
  }
  uint8_t keycode;
};
 
// Create keys
KbdKey keys[] = {
  KbdKey(KEY_UP,         1),
  KbdKey(KEY_DOWN,       2),
  KbdKey(KEY_LEFT,       3),
  KbdKey(KEY_RIGHT,      4),
  KbdKey(KEY_ENTER,      5),  // Select/OSD
  KbdKey(KEY_SPACE,      6),  // Play/pause
  KbdKey(KEY_ESC,        7),  // Previous menu/exit fullscreen
  KbdKey(KEY_BACKSPACE,  8),  // Back in menus
  KbdKey(KEY_TAB,        9),  // Toggle fullscreen
  KbdKey(KEY_PERIOD,    10),  // Skip forward
  KbdKey(KEY_COMMA,     12),  // Skip backward
  KbdKey(KEY_X,         13),  // Stop
  KbdKey(KEY_I,         14),  // Info
  KbdKey(KEY_C,         15)   // Contextual menu
};
 
// Create IR receiver objects
IRrecv ir_recv(PIN_IR_RECV);
decode_results ir_results;
 
void setup() {
 
  // Configure IR
  ir_recv.enableIRIn();    // Start the receiver
  ir_recv.blink13(false);  // Disable blink led uppon receiving IR code
 
  // Enable LED
  pinMode(PIN_LED, OUTPUT);
}
 
void loop() {
 
  // Check IR code
  if (ir_recv.decode(&ir_results)) {
    Keyboard.println(ir_results.decode_type);
    Keyboard.println(ir_results.value);
 
    // Visual feedback of known code
    digitalWrite(PIN_LED, HIGH);   // LED on
    delay(10);
    digitalWrite(PIN_LED, LOW);  // LED off
    ir_recv.resume();
  }
 
  // Check all the keys.
  for (uint8_t i = 0; i < sizeof keys / sizeof *keys; i++) {
    KbdKey *key = &keys[i];
 
    // Update the button.
    key->update();
 
    // Press key on falling edge.
    if (key->fallingEdge()) {
      Keyboard.set_key1(key->keycode);
      Keyboard.send_now();
    }
 
    // Release key on rising edge.
    if (key->risingEdge()) {
      Keyboard.set_key1(0);
      Keyboard.send_now();
    }
  }
}