User interface/Main (English) for v1.0

*Panel
 7 	8 	9 	A 		POW.LAMP	POWER
 4 	5 	6 	B 			TUN.LAMP
 1 	2 	3 	C 			FM.LAMP
 0 	F 	E 	D 			AM.LAMP

  * 0 〜 9 :　Numeric or up/down , commands.
  * A : Special key.
  * B : Special key,Cancel on numeric mode.
  * C : Special key.
  * D : Special key.
  * E : Special key.
  * F : Normally help, ENTER on numeric mode.

  * POWER : Turn on/off power only in top screen, you need long-press.
  * TUN.LAMP : Tuning lamp connect to radio chip directly.
  * POW.LAMP : Turning on when main power is truned on.
  * AM.LAMP : Turning on when AM(MW/LW/SW) mode. 
  * FM.LAMP : Turning on when FM/TV mode.

* State change diagram
  Main screen(UP/DOWN) -> '5' is manu → '0' is setting.

* Main screen

  *Enable to repeat on keyin.

  Key 	Function
   0 	BAND WIDTH.
   1 	Down frequency(slow).
   2 	Down band.
   3 	Up frequency(slow).
   4 	Down frequency(medium).
   5 	GO TO MENU.
   6 	UP frequency(medium).
   7 	Down frequency(fast).
   8 	Up band.
   9 	Up frequency(fast).
   A 	Toggle AM/FM.
   B 	GO TO Up/Down user frequencies.
   C 	GO TO Scan mode.
   D 	Change band-width when FM mode.
   E 	Toggle ON/OFF for LCD Backlight.
   F 	Help.

* Scan mode
   4 	Lower scan.
   6 	Upper scan.
   A  	Abort scan , and EXIT TO Main screen.
   F    EXIT TO Main screen without aborting.

   * When progress of scanning, display '>' at (0,0) of Screen.
     When complete, display ' '.

   * In progress of scanning, you can abort/up/down/EXIT scanning.

* Menu screen(5)

  * Keyin is *not* repeated.
   0 	GO TO Setting screen.
   1 	Call band directly.
   2 	
   3 	Call frequency directly.
   4    Call user ch directly.
   5 	Cancel.
   6 	Set user CH.
   7 	TURN OFF POWER.
   8 	Set audio volume.
   9 	Reload current frequency.
   A 	Toggle AM/FM.
   B 	Cancel.
   C 	Set user-defined band.
   D 	Call user-defined band.
   E 	Pitch of tuning FM.(25,50,100,200KHz)
   F 	Help.

*Setting screen(5->0)

  * Keyin is *not* repeated.
    0 	TURN OFF POWER.
    1 	
    2 	
    3 	Luminance of LCD BACKLIGHT.
    4 	Set FM-Bandwidth(0-3).
    5 	Cancel.
    6 	Set long of UI UPDATE tick(MS).
    7 	Set FM CNR ratio(0-3).
    8 	Set AM CNR ratio(0-3).
    9 	Set FM threshold(0-3).
    A 	Load settings from EEPROM.
    B 	
    C 	Save current settings to EEPROM.
    D 	Reset to default value.
    E 	Width of LCD BACKLIGHT.
    F 	Help.

* Key assign of NUMERIC MODE
   0〜9	Input Numeric.
   F 	ENTER
   A 	Delete one digit(BS).
   B 	Cancel.
   E 	Move to right (down) digit.
   D 	Move to left (up) digit.

* Up/Down of USER frequencies(Main screen ->B)
   1 	1ch. down 
   2 	
   3 	
   7 	1ch. up 
   8 	
   9 	
   4    Call channel directly.
   5    Call current channel.
   6    Set frequency to channel.
   d 	Reset frequency before Up/Down.
   A 	EXIT.
   F 	Help

Sep 27, 2013 K.Ohta <whatisthis.sowhat _at_ gmail.com>