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Author Topic: simple menu to select program  (Read 328 times)
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I am using the M2tklib library to create a simple menu where selecting one item would start one program and selecting the other would start the other. I am not sure where I would implement the two different codes though and how to toggle the selection of the items. Both programs require independent loops.

Here is the menu template I am using

#include <glcd.h> // inform Arduino IDE that we will use GLCD library
#include "M2tk.h"
#include "utility/m2ghglcd.h"

uint8_t uiKeySelectPin = 3;
uint8_t uiKeyDownPin = 2;
uint8_t uiKeyUpPin = 1;
uint8_t uiKeyExitPin = 0;

// Forward declaration of the toplevel element

// Left entry: Menu name. Submenus must have a '.' at the beginning
// Right entry: Reference to the target dialog box (In this example all menus call the toplevel element again
m2_menu_entry m2_2lmenu_data[] =
  { "Program 1", &top_el_expandable_menu },

  { "Program 2", &top_el_expandable_menu },
  { NULL, NULL },

// The first visible line and the total number of visible lines.
// Both values are written by M2_2LMENU and read by M2_VSB
uint8_t m2_2lmenu_first;
uint8_t m2_2lmenu_cnt;

// M2_2LMENU definition
// Option l4 = four visible lines
// Option e15 = first column has a width of 15 pixel
// Option W43 = second column has a width of 43/64 of the display width

M2_2LMENU(el_2lmenu,"l4e15W43",&m2_2lmenu_first,&m2_2lmenu_cnt, m2_2lmenu_data,'+','-','\0');
M2_SPACE(el_space, "W1h1");
M2_VSB(el_vsb, "l4W2r1", &m2_2lmenu_first, &m2_2lmenu_cnt);
M2_LIST(list_2lmenu) = { &el_2lmenu, &el_space, &el_vsb };
M2_HLIST(el_hlist, NULL, list_2lmenu);
M2_ALIGN(top_el_expandable_menu, "-1|1W64H64", &el_hlist);

// m2 object and constructor
M2tk m2(&top_el_expandable_menu, m2_es_arduino, m2_eh_4bs, m2_gh_glcd_ffs);

void setup() {
  m2.setPin(M2_KEY_SELECT, uiKeySelectPin);
  m2.setPin(M2_KEY_NEXT, uiKeyDownPin);
  m2.setPin(M2_KEY_PREV, uiKeyUpPin);
  m2.setPin(M2_KEY_EXIT, uiKeyExitPin); 

void loop() {
  if ( m2.handleKey() ) {


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Excause me for not having seen this post (I usually only look at the "Display" Subforum).
Did you solve this problem with M2tklib?

There are several ways to solve this problem with M2tklib. The common thing would be to set a global vaiable to 0 and 1, depending on your desired procedure you want to execute. Then, based on the value of this global variable, you would place some code into "loop()" to execute the two procedures (maybe after calling the draw procedure from m2tklib):

if ( globalvar == 0 )
else if ( globalvar == 1 )



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