Simple LCD Menu Main Page

Overview

This is a menu system for standard alphanumerical LC-displays.

To navigate through the menu, only 3 buttons are needed: Forward, Backward and Menu/Enter (or a rotary encoder with push button).

You can make multiple nested sub-menus, hidden menus (not supported by the designer yet), function calls and display or edit different value types (Bit, Byte, Word, Integer, Single, String).

The menu structure and associated data is stored in arrays at runtime, the structure is made by connecting the right entries together (with their array indexes).

Numerical values are displayed both as value and as a bargraph showing the current position in the specified range.

Bit values can be set to On/Off (or another custom text), numerical values will be increased/decreased by the specified step size and string values can be edited using a custom set of characters (and two special characters for backspace/enter). Read-Only values just show the content of a variable.

To save program space, just the pieces of code you use are compiled. You get the smallest size if you just use Links and Function Calls, it will increase if you use values (read-only, editable or both) and for each data type used.

How to use it

Setup

Include the menu structure created with the designer and the menu functions:

Macro Menu_include_data
   $include "inc\menu_data.bas"
End Macro
$include "inc\menu.bas"

Dimension used Variables

Between the function include and the initialisation you have to dimension the variables used to display or edit in the menu:

Dim Test_bit As Byte
Dim Test_byte As Byte
Dim Test_word As Word
Dim Test_integer As Integer
Dim Test_dword As Dword
Dim Test_long As Long
Dim Test_single As Single
Dim Test_double As Double
Dim Test_string As String * Menu_value_string_width

Bit data types have to be defined as a byte. Note that a constant was created containing the maximum string size.

Initialisation

Menu_init

Main Loop

Do
   If Switch_minus = 1 Then Menu_backward()            ' back button pressed
   If Switch_plus = 1 Then Menu_forward()              ' forward button pressed
   If Switch_enter = 1 Then                            ' enter button pressed
      Select Case Menu_enter()
      Case Menu_exit:                                  ' Exit entry selected
         ...
      Case 2-255:                                      ' Function call
         ...
      End Select
   End If
   Menu                                                ' Main function
   ...
Loop

Interface description

Const Menu_default_entry

ID of the default entry

Const Menu_value_string_width

size for strings used to display

Macro Menu_init

loads the menu data

Declare Sub Menu()

Main function, called in Main Loop

Declare Sub Menu_forward()

Goes one step forward in the menu or while in edit mode, bit values are set to true, numerical values are increased by the step size and for strings, the following character in the table will be selected.

Declare Sub Menu_backward()

Goes one step backward in the menu or while in edit mode, bit values are set to false, numerical values are decreased by the step size and for strings, the preceeding character in the table will be selected.

Declare Function Menu_enter() As Byte

Shows the menu if inactive, follows a link, enters/exits the edit mode, adds a character in string edit mode or selects a function

Declare Sub Menu_show(byval Entry_id As Byte)

Displays the menu with the provided entry id, if 0, the default entry is selected

Declare Sub Menu_hide()

hides the menu

LCD Menu Designer

Global Settings

When the first entry in the menu tree is selected, the global settings are visible. Here you can select the LCD character width, the visual style for the bargraph, edit the character table used in string edit mode and choose the texts to display for bit values (Default is On/Off, you can set it for example to Yes/No or High/Low etc.).

Link

With links you can jump to another entry in the menu, just select it in the right menu tree. Submenu- and Back entries are also links, but the target is created automatically.

Value

Select the variable type (all Bascom types are supported) and choose if the value should be editable or read-only. In the "Associated variable" field enter the Variable name you declared in your code. Then set the range of the value (lowest and highest possible value). If the value is editable, you further have to set its initial value (will be set in Menu_init) and, if its a numerical value, the step size (positive, > 0).

Function

Select a function ID between 2 and 255. When this entry is selected, the menu hides and the Menu()-function returns the ID.

Tool: Character Table

With this little tool it is easy to get the corresponding code for characters supported by alphanumerical LCDs. Click on the desired character, the calculated code, formatted ready to use in Bascom strings, appears in the text field below.

Small Sample

Menu structure overview

Menu data include file

$nocompile

Const Lcd_width = 16
Const Lcd_bar_style = 1
Const Lcd_bit_display_off = "Off"
Const Lcd_bit_display_on = "On"

Const Menu_entries_count = 9
Const Menu_default_entry = 1

Const Menu_values_use = True
Const Menu_values_edit_use = False
Const Menu_values_count = 1
Const Menu_value_bit_count = 0
Const Menu_value_byte_count = 0
Const Menu_value_word_count = 0
Const Menu_value_integer_count = 0
Const Menu_value_dword_count = 0
Const Menu_value_long_count = 0
Const Menu_value_single_count = 0
Const Menu_value_double_count = 0
Const Menu_value_string_count = 1

Goto Menu_data_jumpover

Menu_entries:
   ' Type, Text ID, Before, Next, Child
   Data Menu_link , 0 , 7 , 2 , 4                           ' 1, Submenu
   Data Menu_value , 5 , 1 , 3 , 1                          ' 2, Another Entry
   Data Menu_link , 6 , 2 , 7 , 3                           ' 3, 3rd Entry
   Data Menu_link , 1 , 6 , 5 , 2                           ' 4, Sub-Entry 1
   Data Menu_link , 2 , 4 , 6 , 8                           ' 5, Submenu 2
   Data Menu_link , 4 , 5 , 4 , 1                           ' 6, {127} Back
   Data Menu_exit , 7 , 3 , 1 , 0                           ' 7, {127} Exit
   Data Menu_link , 3 , 9 , 9 , 4                           ' 8, Entry
   Data Menu_link , 4 , 8 , 8 , 5                           ' 9, {127} Back

Menu_string_constants:
   Data "Submenu"                                           ' 0
   Data "Sub-Entry 1"                                       ' 1
   Data "Submenu 2"                                         ' 2
   Data "Entry"                                             ' 3
   Data "{127} Back"                                        ' 4
   Data "Another Entry"                                     ' 5
   Data "3rd Entry"                                         ' 6
   Data "{127} Exit"                                        ' 7

Menu_values:
   ' Type, Value Child, Step/ReadOnly (if 0), Min, Max, [Init value]
   Data Menu_value_string , 1 , 0                           ' 1, Another Entry

Macro Menu_varpointers
   Menu_value_varpointer(1) = Varptr(test_string)           ' Another Entry, entry: 2, value: 1
End Macro

Menu_string_characters:
   ' Table of characters used in string editing
   Data 254                                                 ' start of table, needed

   Data "ABCDEFGHIJKLMNOPQRSTUVWXYZ 0123456789"

   ' special characters with function, these are needed
   Data Menu_character_backspace                            ' backspace
   Data Menu_character_finish                               ' finish string editing
   Data 254                                                 ' end of table

Menu_data_jumpover:

'(
###DESIGNER###
1f8b0800000000000400ecbd07601c499625262f6dca7b7f4af54ad7e074a10880601324d8904010
ecc188cde692ec1d69472329ab2a81ca6556655d661640cced9dbcf7de7befbdf7de7befbdf7ba3b
9d4e27f7dfff3f5c6664016cf6ce4adac99e2180aac81f3f7e7c1f3f22fec7bff71fdcfdf4374e76
7fe3e4f8c9c9d3d3679f7ffbec3bbfd7f32f5e7cf9f2275ebd7ef3d54f7ef7f7fe7d7e2addd9ddbb
b77fffd307070f7fe3e4cb25fdfffc9c5fd9e17fbfc897ebe7c5f2ed6f9cbc5e4f16f4c76f9cecf3
17fb9defb64f976d7d9dd2377bfcfdfdc8bb297d75c05f1df8dff29b0c91be7928df3cc9a6f4cd2f
dedd7bf04b52f9fd3e83fd74e86bc1784fbefec9ac5ce734ea65d5cef33ad50ef8d3d76d5d2c2fb8
f19bbc697fff46ff7e53e30d8172cfc7ee5e3d3300eef1b70fe4dbd377456b5090dfe9bb1ffff11f
3ffdf219fdfb1b27
###DESIGNER_END###
')

Full Sample

Menu structure

Menu data include file

$nocompile

Const Lcd_width = 16
Const Lcd_bar_style = 1
Const Lcd_bit_display_off = "Off"
Const Lcd_bit_display_on = "On"

Const Menu_entries_count = 25
Const Menu_default_entry = 1

Const Menu_values_use = True
Const Menu_values_edit_use = True
Const Menu_values_count = 18
Const Menu_value_bit_count = 2
Const Menu_value_byte_count = 2
Const Menu_value_word_count = 2
Const Menu_value_integer_count = 2
Const Menu_value_dword_count = 2
Const Menu_value_long_count = 2
Const Menu_value_single_count = 2
Const Menu_value_double_count = 2
Const Menu_value_string_count = 2

Goto Menu_data_jumpover

Menu_entries:
   ' Type, Text ID, Before, Next, Child
   Data Menu_link , 0 , 5 , 2 , 24                          ' 1, Link
   Data Menu_link , 1 , 1 , 3 , 6                           ' 2, Editable
   Data Menu_link , 12 , 2 , 4 , 16                         ' 3, Read Only
   Data Menu_function , 13 , 3 , 5 , 2                      ' 4, Function
   Data Menu_exit , 14 , 4 , 1 , 0                          ' 5, {127} Exit
   Data Menu_value , 2 , 15 , 7 , 1                         ' 6, Bit
   Data Menu_value , 3 , 6 , 8 , 2                          ' 7, Byte
   Data Menu_value , 4 , 7 , 9 , 3                          ' 8, Word
   Data Menu_value , 5 , 8 , 10 , 4                         ' 9, Integer
   Data Menu_value , 6 , 9 , 11 , 5                         ' 10, DWord
   Data Menu_value , 7 , 10 , 12 , 6                        ' 11, Long
   Data Menu_value , 8 , 11 , 13 , 7                        ' 12, Single
   Data Menu_value , 9 , 12 , 14 , 8                        ' 13, Double
   Data Menu_value , 10 , 13 , 15 , 9                       ' 14, String
   Data Menu_link , 11 , 14 , 6 , 2                         ' 15, {127} Back
   Data Menu_value , 2 , 25 , 17 , 10                       ' 16, Bit, read only
   Data Menu_value , 3 , 16 , 18 , 11                       ' 17, Byte, read only
   Data Menu_value , 4 , 17 , 19 , 12                       ' 18, Word, read only
   Data Menu_value , 5 , 18 , 20 , 13                       ' 19, Integer, read only
   Data Menu_value , 6 , 19 , 21 , 14                       ' 20, DWord, read only
   Data Menu_value , 7 , 20 , 22 , 15                       ' 21, Long, read only
   Data Menu_value , 8 , 21 , 23 , 16                       ' 22, Single, read only
   Data Menu_value , 9 , 22 , 24 , 17                       ' 23, Double, read only
   Data Menu_value , 10 , 23 , 25 , 18                      ' 24, String, read only
   Data Menu_link , 11 , 24 , 16 , 3                        ' 25, {127} Back

Menu_string_constants:
   Data "Link"                                              ' 0
   Data "Editable"                                          ' 1
   Data "Bit"                                               ' 2
   Data "Byte"                                              ' 3
   Data "Word"                                              ' 4
   Data "Integer"                                           ' 5
   Data "DWord"                                             ' 6
   Data "Long"                                              ' 7
   Data "Single"                                            ' 8
   Data "Double"                                            ' 9
   Data "String"                                            ' 10
   Data "{127} Back"                                        ' 11
   Data "Read Only"                                         ' 12
   Data "Function"                                          ' 13
   Data "{127} Exit"                                        ' 14

Menu_values:
   ' Type, Value Child, Step/ReadOnly (if 0), Min, Max, [Init value]
   Data Menu_value_bit , 1 , 1 , False                      ' 1, Bit
   Data Menu_value_byte , 1 , 2 , 0 , 100 , 50              ' 2, Byte
   Data Menu_value_word , 1 , 64% , 0% , 1024% , 0%         ' 3, Word
   Data Menu_value_integer , 1 , 1% , -5% , 5% , 0%         ' 4, Integer
   Data Menu_value_dword , 1 , 1 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 10 , 0 , 0 , 0 , 0 , 0 , 0 , 0       ' 5, DWord
   Data Menu_value_long , 1 , 1& , 0& , 10& , 0&            ' 6, Long
   Data Menu_value_single , 1 , 0.25! , -2.5! , 2.5! , 0!   ' 7, Single
   Data Menu_value_double , 1 , 3.14159# , -31.4159# , 31.4159# , 0#       ' 8, Double
   Data Menu_value_string , 1 , 1 , "Hello World"           ' 9, String
   Data Menu_value_bit , 2 , 0                              ' 10, Bit, read only
   Data Menu_value_byte , 2 , 0 , 0 , 100                   ' 11, Byte, read only
   Data Menu_value_word , 2 , 0% , 0% , 1024%               ' 12, Word, read only
   Data Menu_value_integer , 2 , 0% , -5% , 5%              ' 13, Integer, read only
   Data Menu_value_dword , 2 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 10 , 0 , 0 , 0       ' 14, DWord, read only
   Data Menu_value_long , 2 , 0& , 0& , 10&                 ' 15, Long, read only
   Data Menu_value_single , 2 , 0! , -2.5! , 2.5!           ' 16, Single, read only
   Data Menu_value_double , 2 , 0# , -31.4159# , 31.4159#   ' 17, Double, read only
   Data Menu_value_string , 2 , 0                           ' 18, String, read only

Macro Menu_varpointers
   Menu_value_varpointer(1) = Varptr(test_bit)              ' Bit, entry: 6, value: 1
   Menu_value_varpointer(2) = Varptr(test_byte)             ' Byte, entry: 7, value: 1
   Menu_value_varpointer(3) = Varptr(test_word)             ' Word, entry: 8, value: 1
   Menu_value_varpointer(4) = Varptr(test_integer)          ' Integer, entry: 9, value: 1
   Menu_value_varpointer(5) = Varptr(test_dword)            ' DWord, entry: 10, value: 1
   Menu_value_varpointer(6) = Varptr(test_long)             ' Long, entry: 11, value: 1
   Menu_value_varpointer(7) = Varptr(test_single)           ' Single, entry: 12, value: 1
   Menu_value_varpointer(8) = Varptr(test_double)           ' Double, entry: 13, value: 1
   Menu_value_varpointer(9) = Varptr(test_string)           ' String, entry: 14, value: 1
   Menu_value_varpointer(10) = Varptr(test_bit)             ' Bit, entry: 16, value: 2
   Menu_value_varpointer(11) = Varptr(test_byte)            ' Byte, entry: 17, value: 2
   Menu_value_varpointer(12) = Varptr(test_word)            ' Word, entry: 18, value: 2
   Menu_value_varpointer(13) = Varptr(test_integer)         ' Integer, entry: 19, value: 2
   Menu_value_varpointer(14) = Varptr(test_dword)           ' DWord, entry: 20, value: 2
   Menu_value_varpointer(15) = Varptr(test_long)            ' Long, entry: 21, value: 2
   Menu_value_varpointer(16) = Varptr(test_single)          ' Single, entry: 22, value: 2
   Menu_value_varpointer(17) = Varptr(test_double)          ' Double, entry: 23, value: 2
   Menu_value_varpointer(18) = Varptr(test_string)          ' String, entry: 24, value: 2
End Macro

Menu_string_characters:
   ' Table of characters used in string editing
   Data 254                                                 ' start of table, needed

   Data "ABCDEFGHIJKLMNOPQRSTUVWXYZ 0123456789"

   ' special characters with function, these are needed
   Data Menu_character_backspace                            ' backspace
   Data Menu_character_finish                               ' finish string editing
   Data 254                                                 ' end of table

Menu_data_jumpover:

'(
###DESIGNER###
1f8b0800000000000400ecbd07601c499625262f6dca7b7f4af54ad7e074a10880601324d8904010
ecc188cde692ec1d69472329ab2a81ca6556655d661640cced9dbcf7de7befbdf7de7befbdf7ba3b
9d4e27f7dfff3f5c6664016cf6ce4adac99e2180aac81f3f7e7c1f3f22fec7bff71fdcfdf4374e76
7fe3e4f8c9c9d3d3679f7ffbec3bbfd7f32f5e7cf9f2275ebd7ef3d54f7ef7f7fe7d7e2addd9ddbb
b77fffd307070f7fe3e4cb25fdfffc9c5fd9e17fbfc897ebe7c5f2ed6f9cc8bf7bfbfccd9effcde9
ac68b34999ffc6c9a7fccda7f2e54f66e59a3e7b52b4bf71c2bff36fcfb2b2a14fdfe44dfbfb4fbc
0f76f9d507e1abd76d6edee55fefef9837f94f7d1598ee0852f2bf8300ca77ab7aa650e45703e48a
fff28160749fd2ffef3198870198b3659b5fe4b542b27f196085f940e16ddf27747958fb0c6c7727
80f6d4c34a7f3790667dbc18ce7d81a393a2709e57cb0b0523bf1a2825ffd5032233b4abf3a7405e
17cb0b4c1fff69fe30801afddb8c6b6f0c44f0cfce78ef3e4f1920de0b8757ad2716a2f9c30e50ff
3610efed8ef777ef13b5dd2fe35df9e54080ef87e8b67561476dfef8765e96554a942c670671fd46
bb7928a0ee0ba827d99438f717efee3df825a9fcbec708ea3084b15fe5d92cfd72595ed37b9ff277
bbefc7db6f6ab4da15b8bb373077c8dbf2aa616dfcdc1528efc5dc6f1c14955c4c3dc07c3de616ac
94b701ed9e08cbfb32b7373af9a142f75eccdd03725f80dc86b9c75df6d69179dc6d277def36bc6d
011aee56807de606e00702f8167cedf394e16865ab0301727f88a3ef715fdac7b3f572da16152978
f79bb0bcbe7ffa0e1c2befcbeff4dd8ffff88f9f7ef98cfefd8d
###DESIGNER_END###
')

Download

• LCD Menu Version 1.1