/****************************************************************************
 * @(#) Ndless - Common definitions
 *
 * Copyright (C) 2010 by ANNEHEIM Geoffrey and ARMAND Olivier
 * Contact: geoffrey.anneheim@gmail.com / olivier.calc@gmail.com
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.
 *
 ****************************************************************************/

#ifndef _COMMON_H_
#define _COMMON_H_

/***********************************
 * Hardware CAS+
 ***********************************/
#define SCREEN_BASE_ADDRESS     (void*)0x20009520

/***********************************
 * Addresses
 ***********************************/
#define OS_BASE_ADDRESS         (void*)0x10000000

/***********************************
 * Others
 ***********************************/
#define SCREEN_BYTES_SIZE       38400
#define SCREEN_WIDTH            320
#define SCREEN_HEIGHT           240

#define BLACK                   0x0
#define WHITE                   0xF

/***********************************
 * Keys these need updating
 ***********************************/
#define KEY_NSPIRE_RET          0x0A
#define KEY_NSPIRE_ENTER        0x0D
#define KEY_NSPIRE_SPACE        (int)' '
#define KEY_NSPIRE_NEGATIVE     (int)'-'
#define KEY_NSPIRE_Z            (int)'z'
#define KEY_NSPIRE_PERIOD       (int)'.'
#define KEY_NSPIRE_Y            (int)'y'
#define KEY_NSPIRE_0            (int)'0'
#define KEY_NSPIRE_X            (int)'x'
#define KEY_NSPIRE_EQUAL        (int)'='
#define KEY_NSPIRE_COMMA        (int)','
#define KEY_NSPIRE_PLUS         (int)'+'
#define KEY_NSPIRE_W            (int)'w'
#define KEY_NSPIRE_3            (int)'3'
#define KEY_NSPIRE_V            (int)'v'
#define KEY_NSPIRE_2            (int)'2'
#define KEY_NSPIRE_U            (int)'u'
#define KEY_NSPIRE_1            (int)'1'
#define KEY_NSPIRE_T            (int)'t'
#define KEY_NSPIRE_LN           0xA900
#define KEY_NSPIRE_GTHAN        (int)'>'
#define KEY_NSPIRE_QUES         (int)'?'
#define KEY_NSPIRE_MINUS        (int)'-'
#define KEY_NSPIRE_S            (int)'s'
#define KEY_NSPIRE_6            (int)'6'
#define KEY_NSPIRE_R            (int)'r'
#define KEY_NSPIRE_5            (int)'5'
#define KEY_NSPIRE_Q            (int)'q'
#define KEY_NSPIRE_4            (int)'4'
#define KEY_NSPIRE_P            (int)'p'
#define KEY_NSPIRE_LOG          0x9400
#define KEY_NSPIRE_LTHAN        (int)'<'
#define KEY_NSPIRE_COLON        (int)':'
#define KEY_NSPIRE_MULTIPLY     (int)'*'
#define KEY_NSPIRE_O            (int)'o'
#define KEY_NSPIRE_9            (int)'9'
#define KEY_NSPIRE_N            (int)'n'
#define KEY_NSPIRE_8            (int)'8'
#define KEY_NSPIRE_M            (int)'m'
#define KEY_NSPIRE_7            (int)'7'
#define KEY_NSPIRE_L            (int)'l'
#define KEY_NSPIRE_SQU          0x9300
#define KEY_NSPIRE_II           0xA200 
#define KEY_NSPIRE_QUOTE        (int)'"'
#define KEY_NSPIRE_DIVIDE       (int)'/'
#define KEY_NSPIRE_K            (int)'k'
#define KEY_NSPIRE_TAN          0x3400
#define KEY_NSPIRE_J            (int)'j'
#define KEY_NSPIRE_COS          0x5400
#define KEY_NSPIRE_I            (int)'i'
#define KEY_NSPIRE_SIN          0x7400
#define KEY_NSPIRE_H            (int)'h'
#define KEY_NSPIRE_EXP          (int)'^'
#define KEY_NSPIRE_EE           0xA400
#define KEY_NSPIRE_APOSTROPHE   (int)'\''
#define KEY_NSPIRE_CAT          0x9100
#define KEY_NSPIRE_G            (int)'g'
#define KEY_NSPIRE_RP           (int)')'
#define KEY_NSPIRE_F            (int)'f'
#define KEY_NSPIRE_LP           (int)'('
#define KEY_NSPIRE_E            (int)'e'
#define KEY_NSPIRE_STO          0xA800
#define KEY_NSPIRE_D            (int)'d'
#define KEY_NSPIRE_SHIFT        0x00100000   // SHIFT CAPS
#define KEY_NSPIRE_PI           0xA300
#define KEY_NSPIRE_FLAG         0xA700
#define KEY_NSPIRE_C            (int)'c'
//#define KEY_NSPIRE_MENU         ?
#define KEY_NSPIRE_B            (int)'b'
#define KEY_NSPIRE_ESC          27
#define KEY_NSPIRE_A            (int)'a'
#define KEY_NSPIRE_CLICK        0x1700
#define KEY_NSPIRE_THETA        0x0688
#define KEY_NSPIRE_HAND         0x7400
#define KEY_NSPIRE_TAB          0x09
#define KEY_NSPIRE_LEFT         0x0700
#define KEY_NSPIRE_UP           0x1700
#define KEY_NSPIRE_RIGHT        0x2700
#define KEY_NSPIRE_DOWN         0x3700
//#define MOUSE_NSPIRE_UP           0x0
//#define MOUSE_NSPIRE_UPRIGHT      0x0
//#define MOUSE_NSPIRE_RIGHT        0x0
//#define MOUSE_NSPIRE_RIGHTDOWN    0x0
//#define MOUSE_NSPIRE_DOWN         0x0
//#define MOUSE_NSPIRE_DOWNLEFT     0x0
//#define MOUSE_NSPIRE_LEFT         0x0
//#define MOUSE_NSPIRE_LEFTUP       0x0
#define KEY_NSPIRE_DEL          0x08
#define KEY_NSPIRE_CTRL         0x00040000


/** GNU AS */
#ifdef GNU_AS
  
  .macro halt
halt\@: b halt\@
  .endm

/** GNU C Compiler */
#else

  typedef struct  {  //http://www.omnimaga.org/index.php?topic=2255.msg58307#msg58307 
        unsigned int timestamp;
        unsigned short type;
        unsigned short ascii;
        unsigned int key;
        unsigned int unknown[3];
        unsigned int modifier;
} event;


/***********************************
 * Misc inline functions
 ***********************************/

static inline void halt(void) {
  asm volatile("0: b 0b");
}

/* switch to low-power state until next interrupt */
static inline void idle(void) {
  unsigned int sbz = 0;
  asm volatile ("mcr p15, 0, %0, c7, c0, 4" : "=r"(sbz) );
}

 
#endif /* GCC */

#endif