platform/ixusizoom

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This source file includes following definitions.
hook_kbd_task_proceed
mykbd_task
wrap_kbd_p1_f
my_kbd_read_keys
kbd_fetch_data
   1 #include "lolevel.h"
   2 #include "platform.h"
   3 #include "keyboard.h"
   4 #include "kbd_common.h"
   5 
   6 #define NEW_SS (0x2000)
   7 
   8 long kbd_new_state[3] = { 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF };
   9 long kbd_prev_state[3] = { 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF };
  10 long kbd_mod_state[3] = { 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF };
  11 
  12 KeyMap keymap[] = {
  13     /* tiny bug: key order matters. see kbd_get_pressed_key()
  14      * for example
  15      */
  16         {2, KEY_UP      , 0x00000001 },
  17         {2, KEY_DOWN    , 0x00000002 },
  18         {2, KEY_LEFT    , 0x00000008 },
  19         {2, KEY_RIGHT   , 0x00000004 },
  20         {2, KEY_SET     , 0x00000100 },
  21         {2, KEY_SHOOT_FULL, 0x00000030 }, // note 3 here!
  22     {2, KEY_SHOOT_FULL_ONLY, 0x00000020 },
  23         {2, KEY_SHOOT_HALF, 0x00000010 },
  24         {2, KEY_ZOOM_IN , 0x00000040 },
  25         {2, KEY_ZOOM_OUT        , 0x00000080 },
  26         {2, KEY_MENU    , 0x00000200 },
  27         {2, KEY_DISPLAY , 0x00000400 },
  28         {2, KEY_PRINT   , 0x00001000 },
  29         {0, 0, 0 }
  30 };
  31 
  32 static char kbd_stack[NEW_SS];
  33 
  34 long __attribute__((naked)) wrap_kbd_p1_f();
  35 
  36 static void __attribute__((noinline)) hook_kbd_task_proceed()
  37 {
  38     while (physw_run){
  39         // was 5 in original port, but 10 in firmware
  40         _SleepTask(10);
  41 
  42         if (wrap_kbd_p1_f() == 1) // Readout key state via camera function
  43         {
  44             _kbd_p2_f();
  45         }
  46 
  47     }
  48 }
  49 
  50 void __attribute__((naked,noinline)) mykbd_task()
  51 {
  52    /* WARNING
  53      * Stack pointer manipulation performed here!
  54      * This means (but not limited to):
  55      *  function arguments destroyed;
  56      *  function CAN NOT return properly;
  57      *  MUST NOT call or use stack variables before stack
  58      *  is setup properly;
  59      *
  60      */
  61 
  62     register int i;
  63     register long *newstack;
  64 
  65     newstack = (void*)kbd_stack;
  66 
  67     for (i=0;i<NEW_SS/4;i++)
  68         newstack[i]=0xdededede;
  69 
  70     asm volatile (
  71         "MOV    SP, %0"
  72         :: "r"(((char*)newstack)+NEW_SS)
  73         : "memory"
  74     );
  75 
  76     hook_kbd_task_proceed();
  77 
  78     /* function can be modified to restore SP here...
  79      */
  80 
  81     _ExitTask();
  82 
  83 }
  84 
  85 long __attribute__((naked,noinline)) wrap_kbd_p1_f()    //OK
  86 {
  87 
  88     asm volatile(
  89                 "STMFD   SP!, {R4-R7,LR}\n"
  90                 "SUB     SP, SP, #0xC\n"
  91 //                "BL      _kbd_read_keys\n"
  92                 "BL      my_kbd_read_keys\n"
  93                 "B       _kbd_p1_f_cont\n"        // Continue original function execution
  94     );
  95     return 0; // shut up the compiler
  96 }
  97 
  98 
  99 /**
 100  * Handles and forwards key settings to key processing routines
 101  */
 102 void my_kbd_read_keys()
 103 {
 104     kbd_update_key_state();
 105     kbd_update_physw_bits();
 106 }
 107 
 108 extern void _GetKbdState(long *dst);
 109 
 110 void kbd_fetch_data(long *dst)
 111 {
 112     _kbd_pwr_on();
 113     _GetKbdState(dst);
 114     _kbd_read_keys_r2(dst);
 115     _kbd_pwr_off();
 116 }
/* [<][>][^][v][top][bottom][index][help] */
root/platform/ixusizoom_sd30/kbd.c

DEFINITIONS
