dc550_phonesm_contrast.c

来自「一款经典的数字电话设计资料」· C语言 代码 · 共 222 行

/*****************************************************************************/
/*  CONFIDENTIAL                                                             */
/*  Sigpro Copyright 2003, All rights reserved                               */
/*****************************************************************************/
/*  CLIENT:  Telematrix                                                      */
/*  PROJECT: DC550 Digital Centrex Phone                                     */
/*  FILE:    dc550_phonesm_contrast.c                                        */
/*****************************************************************************/
/*  The Contrast State is only active when the user is adjusting the         */
/*  contrast.  It will only ever be active if it is on top of the state      */
/*  stack.                                                                   */
/*****************************************************************************/

#define __DC550_PHONESM_CONTRAST_EXTERN__
#include "dc550_phonesm_contrast.h"
#include "dc550_phonesm_active.h"
#include "dc550_phonesm_idle.h"
#include "dc550_phonesm_init.h"
#include "dc550_phonesm_memory.h"
#include "dc550_phonesm_predial.h"
#include "dc550_phonesm_program.h"
#include "dc550_phonesm_display12.h"
#include "dc550_phonesm_infolevels.h"
#include "dc550_phonesm_infolanguage.h"
#include "dc550_phonesm.h"
#include "dc550_i2cdriver.h"
#include "dc550_display.h"
#include "dc550_leddriver.h"


/******************************************************************************
 *  GLOBAL VARIABLES
 *****************************************************************************/
PHONESM_STATE_E phonesm_contrast_exitstate;
DC550InterruptCounter phonesm_contrast_periodtimeout;


/******************************************************************************
 *  FUNCTION: void phonesm_contrast_init(void) {
 ******************************************************************************
 *  DESCRIPTION:
 *  This function is called to initialize all of the Contrast State variables.
 *****************************************************************************/
void phonesm_contrast_init(void) {
  digpot_Contrast( phonesm_infolevels_getcontrastlevel() );
}


/******************************************************************************
 *  FUNCTION: void phonesm_contrast_state_enter(void)
 ******************************************************************************
 *  DESCRIPTION:
 *  This function is called whenever the telephone enters the Contrast State.
 *****************************************************************************/
void phonesm_contrast_state_enter(void) {
  phonesm_contrast_periodtimeout = PHONESM_CONTRAST_TIMEOUT;
  display_writelineone( 0, phonesm_infolanguage_getlineone_contrast() );
  display_writelinetwo(0,
    phonesm_infolevels_getlevelline(phonesm_infolevels_getcontrastlevel()) );
  
  // Turn on LCD Backlight
  leddriver_setstate(LED_INDICATOR_BACKLIGHT, LED_STATE_ON);
}


/******************************************************************************
 *  FUNCTION: void phonesm_contrast_state_exit(void)
 ******************************************************************************
 *  DESCRIPTION:
 *  This function is called whenever the telephone exits the Contrast State.
 *****************************************************************************/
void phonesm_contrast_state_exit(void) {
  phonesm_infolevels_commitcontrastlevel();
}


/******************************************************************************
 *  FUNCTION: BOOL phonesm_contrast_exec_hookswitch(BOOL updown)
 ******************************************************************************
 *  DESCRIPTION:
 *  This function is called when the hookswitch goes up or down while the
 *  phone is in Contrast State.  The Contrast State always exits with any
 *  hookswitch activity.
 *****************************************************************************/
BOOL phonesm_contrast_exec_hookswitch(BOOL updown) {
  phonesm_contrast_state_exit();
  phonesm_deactivate_state(PHONESM_STATE_CONTRAST);
  return 1;
}


/******************************************************************************
 *  FUNCTION:
 *  BOOL phonesm_contrast_exec_keypress(unsigned int key, BOOL updown)
 ******************************************************************************
 *  DESCRIPTION:
 *  This function is called whenever a key goes up or down while the phone
 *  is in the Contrast State.  This function deactivates the Contrast State
 *  and returns 1 whenever the key pressed is not a scroll key.
 *****************************************************************************/
BOOL phonesm_contrast_exec_keypress(unsigned int key, BOOL updown) {
  // Declare local variables
  DC550Level currentlevel;

  // Currently the Contrast State will only respond to key down messages
  if(updown == KEYSTATE_DOWN) {
    switch(key) {
      // The Scroll Keys change the contrast
      case KEYPAD_SCROLL_UP:
        phonesm_contrast_periodtimeout = PHONESM_CONTRAST_TIMEOUT;
        currentlevel = phonesm_infolevels_getcontrastlevel();
        if(currentlevel < 15) {
          currentlevel += 1;
          phonesm_infolevels_setcontrastlevel(currentlevel);
          digpot_Contrast( currentlevel );
          display_writelinetwo(0,phonesm_infolevels_getlevelline(currentlevel));
        }
        return 0;
      case KEYPAD_SCROLL_DOWN:
        phonesm_contrast_periodtimeout = PHONESM_CONTRAST_TIMEOUT;
        currentlevel = phonesm_infolevels_getcontrastlevel();
        if(currentlevel > 0) {
          currentlevel -= 1;
          phonesm_infolevels_setcontrastlevel(currentlevel);
          digpot_Contrast( currentlevel );
          display_writelinetwo(0,phonesm_infolevels_getlevelline(currentlevel));
        }
        return 0;
      case KEYPAD_LOCAL_EXIT:
        phonesm_contrast_state_exit();
        phonesm_deactivate_state(PHONESM_STATE_CONTRAST);
        return 0;
      default:
        phonesm_contrast_state_exit();
        phonesm_deactivate_state(PHONESM_STATE_CONTRAST);
        return 1;
    }
  }
  else
    return 0;
}


/******************************************************************************
 *  FUNCTION:
 *  BOOL phonesm_contrast_exec_modemcommand(DC550MDCMessage command)
 ******************************************************************************
 *  DESCRIPTION:
 *  This function is called when the phone receives a modem command while
 *  in the Contrast State.  It deactivates the Contrast State and returns 1
 *  regardless of the message received.
 *****************************************************************************/
BOOL phonesm_contrast_exec_modemcommand(DC550MDCMessage command) {
  // Exit this state
  phonesm_contrast_state_exit();
  phonesm_deactivate_state(PHONESM_STATE_CONTRAST);
  return 1;
}


/******************************************************************************
 *  FUNCTION:
 *  BOOL phonesm_contrast_exec_periodic(BOOL firstline, BOOL secondline)
 ******************************************************************************
 *  DESCRIPTION:
 *  This function is called periodically whether or not the phone is in the
 *  Idle State.  Since the Idle State is always active, this function will
 *  always be called.  firstline and secondline will both be 1 when the
 *  Idle State is "on top".  firstline would be 0 during Predial, and
 *  secondline would also be 0 when the telephone is active.  This function
 *  returns 1 if the periodic function call needs to be repeated due to a
 *  state change and 0 otherwise.
 *****************************************************************************/
BOOL phonesm_contrast_exec_periodic(BOOL firstline, BOOL secondline) {
  if(firstline && secondline) {
    phonesm_contrast_periodtimeout--;
    if(!phonesm_contrast_periodtimeout) {
      // Exit this state
      phonesm_contrast_state_exit();
      phonesm_deactivate_state(PHONESM_STATE_CONTRAST);
      return 1;
    }
    
    switch(phonesm_contrast_exitstate) {
      case PHONESM_STATE_IDLE:
        phonesm_idle_exec_periodic(0,0);
        break;
      case PHONESM_STATE_INIT:
        phonesm_init_exec_periodic(0,0);
        break;
      case PHONESM_STATE_ACTIVE:
        phonesm_active_exec_periodic(0,0);
        break;
      case PHONESM_STATE_PROGRAM:
        phonesm_program_exec_periodic(0,0);
        break;
      case PHONESM_STATE_DISPLAY12:
        phonesm_display12_exec_periodic(0,0);
        break;
      case PHONESM_STATE_MEMORY:
        phonesm_memory_exec_periodic(0,0);
        break;
      case PHONESM_STATE_PREDIAL:
        phonesm_predial_exec_periodic(0,0);
        break;
      case PHONESM_STATE_VOLUME:
      case PHONESM_STATE_CONTRAST:
        // This should never happen
        // Exit this state
        phonesm_contrast_state_exit();
        phonesm_deactivate_state(PHONESM_STATE_CONTRAST);
        return 1;
    };
    return 0;
  }
  else {
    // Exit this state
    phonesm_contrast_state_exit();
    phonesm_deactivate_state(PHONESM_STATE_CONTRAST);
    return 1;
  }
}