/*---------------------------------------------------------------------------*
  Project:  Revolution Low-Level USB keyboard demo
  File:     kbdLowLevel.c 

  Copyright 2007 Nintendo.  All rights reserved.

  These coded instructions, statements, and computer programs contain
  proprietary information of Nintendo of America Inc. and/or Nintendo
  Company Ltd., and are protected by Federal copyright law.  They may
  not be disclosed to third parties or copied or duplicated in any form,
  in whole or in part, without the prior written consent of Nintendo.

  $Log: kbdLowLevel.c,v $
  Revision 1.6  2007/07/13 23:37:18  carlmu
  Changed from TrySetLeds to KBDSetLedsRetry.

  Revision 1.5  2007/06/21 22:46:50  carlmu
  Updated for KBD 1.4 API (changed LED handling).

  Revision 1.4  2007/05/05 01:56:57  carlmu
  Changes for 0.8 API

  Revision 1.3  2007/04/10 18:34:05  carlmu
  Changed for compatibility with 0.4 API.

  Revision 1.2  2007/04/02 19:12:17  carlmu
  Set callback functions modified for new return value.

  Revision 1.1  2007/03/21 18:04:57  carlmu
  Initial version.

  $NoKeywords: $
 *---------------------------------------------------------------------------*/

/*
  Example simple keyboard application to output the low-level API HID code
  and the high-level API unicode to the console.
 */

#include <demo.h>
#include <revolution/kbd.h>

//-----------------------------------------------------------------------------

#define KBD_CALL(_fn_call)                         \
  if ((_fn_call) != KBD_SUCCESS) {                 \
    OSReport ("KBD error: calling %s @ %s:%i\n",   \
              #_fn_call, __FILE__, __LINE__);      \
  }

//-----------------------------------------------------------------------------

static void
kbdAppAttach (KBDDevEvent *kde) {
  OSReport ("kbd app: keyboard added on channel %d\n", kde->channel);
  // for demo purposes, enable NumLock on newly attached keyboard
  KBDSetModState(kde->channel, KBD_MS_NUM_LOCK);
  KBDSetLedsRetry(kde->channel, KBD_LED_NUM_LOCK);
}


static void
kbdAppDetach (KBDDevEvent *kde) {
  OSReport ("kbd app: keyboard removed on channel %d\n", kde->channel);
}


static void
kbdAppKeyEvent (KBDKeyEvent *kke) {
  if (KBD_KEY_MODE_REPEAT(kke->mode)) {
    return;
  }

  if (KBD_KEY_MODE_UP(kke->mode))
    OSReport ("\t\t\thid code: 0x%02x ^ up (chan %d)\n", kke->hid, kke->channel);
  else
    OSReport ("hid code: 0x%02x v down (chan %d)\n", kke->hid, kke->channel);

  // check for CapsLock, NumLock, or ScrollLock (handle LEDs)
  if (kke->hid == KBD_HID_Caps_Lock ||
      kke->hid == KBD_HID_Keypad_Num_Lock ||
      kke->unicode == KBK_Scroll_Lock) {

      KBDModState ms;
      KBDLedState leds;

      // First compute the new LED state
      KBDGetModState(kke->channel, &ms);

      leds = (KBDLedState)
	  (((ms & KBD_MS_NUM_LOCK) == KBD_MS_NUM_LOCK) * KBD_LED_NUM_LOCK |
	   ((ms & KBD_MS_CAPS_LOCK) == KBD_MS_CAPS_LOCK) * KBD_LED_CAPS_LOCK |
	   ((ms & KBD_MS_SCROLL_LOCK) == KBD_MS_SCROLL_LOCK) * KBD_LED_SCROLL_LOCK);

      KBDSetLedsRetry(kke->channel, leds);
  }
}

int main(void) {
  DEMOInit (NULL);

  OSReport("\n\n");
  OSReport("************************************************\n");
  OSReport("kbdLowLevel Low-level keyboard demo\n");
  OSReport("************************************************\n");
  OSReport("Attach a USB keyboard and press some keys.\n");
  OSReport("\n");

  // One of these MUST be called before calling KBDInit.
  // It's okay to call more than one.
  KBDInitRegionUS();
  KBDInitRegionJP();
  KBDInitRegionEU();

  // It's important to set the callbacks before calling KBDInit.
  KBDSetAttachCallback(kbdAppAttach);
  KBDSetDetachCallback(kbdAppDetach);
  KBDSetKeyCallback(kbdAppKeyEvent);
  
  KBD_CALL (KBDInit());

  while(1) {
    OSYieldThread();
  } 

  OSShutdownSystem(); // Never reached

  return 0;
}