keyboard.c

A few drivers for the Motorola C380 s celluar phone hardware with a simple test application. It s co

/*
   Motorola LTE Keyboard Driver
   ----------------------------
   (c) DmT, motoprogger 2008
*/

#include "../libs/motolibs.h"
#include "rtr.h"
#include "kpp.h"
#include "watchdog.h"
#ifdef DRIVER_CONFIG_CAP
#include "cap.h"
#endif

#define set_bit_in_int(v,n) v|(1<<n)

byte KEYS_TABLE[]={
 0x68, //0
 0x78, //1
 0x30, //2
 0x79, //3
 0x31, //4
 0x70, //5
 0x32, //6
 0x39, //7
 0x38, //8
 0x48, //9
 0x71, //0xA - *
 0x69, //0xB - #
 0xFF, //0xC - not used
 0xFF, //0xD - not used
 0x62, //0xE - left soft key
 0x61, //0xF - right soft key
 0x59, //0x10 - center (joystick press)
 0xAA, //0x11 - end call
 0x60, //0x12 - send call
 0xFF, //0x13 - not used
 0x72, //0x14 - menu
 0x51, //0x15 - left smart
 0x52, //0x16 - right smart
 0x59, //0x17 - volume up
 0x50, //0x18 - volume down
 0xFF, //0x19 - not used
 0xFF, //0x1A - not used
 0xFF, //0x1B - not used
 0x40, //0x1C - up (joystick up)
 0x42, //0x1D - down (joystick down)
 0x41, //0x1E - left (joystick left)
 0x49}; //0x1F - right (joystick right)

bool was_power_key_pressed(void)
{
 #ifdef DRIVER_CONFIG_CAP
 return cap_read_pwrkey();
 #else
 return 0;
 #endif
}

int keyb_peek_direct(void)
{
 hword a;
 a=kpp_peek();
 return ((~a)&0x3FF)|was_power_key_pressed()<<10;
}

hword keyb_peek(void)
{
 #define DEBOUNCE_DELAY 16
 hword last_rtr;
 hword last_keys_status;
 hword rtr;
 hword keys_status; 
 last_keys_status=0xFFFF;
 do {
  rtr=rtr_get_lsb();
  keys_status=keyb_peek_direct();
  if (keys_status!=last_keys_status)
  {
   last_rtr=rtr;
   last_keys_status=keys_status;
  }
  wdog_service();
 } while (rtr-last_rtr<DEBOUNCE_DELAY);
 return last_keys_status;
}

byte check_key(hword keys, byte bits)
{
     byte bit1, bit2;
     hword mask;
     bit1=bits&0xF;
     bit2=(bits>>4)&0xF;
     mask=(1<<bit1)|(1<<bit2);
     if (!(~keys&mask))
     {
          if (keys!=mask) return 2;
          else return 1;
     }
     return 0;
}

bool keyb_check_two_keys(byte key1, byte key2)
{
        hword keys;
        keys=keyb_peek_direct();
        return (check_key(keys,KEYS_TABLE[key1]) && check_key(keys,KEYS_TABLE[key2]));
}

byte keyb_peek_key(void)
{
 hword keys;
 word i;
 keys=keyb_peek();
 for (i=0; i<0x20; i++)
  switch(check_key(keys,KEYS_TABLE[i]))
  {
   case 1: return i;
   case 2: return 0xFE;
  }
 return 0xFF; //No key pressed
}

byte keyb_get_key(void)
{
 byte key;
 do {
  key=0;
  while (key!=0xFF) key=keyb_peek_key();
  while (key==0xFF) key=keyb_peek_key();
 } while (key==0xFE);
 return key;
}