Thread: String navigation

I have an array of strings

Code:

char * s_MainMenu[] =
{
  "MAINT ",
  " AUTO ",
  "MANUAL",
  "FAILS "
};

and a struct

Code:

typedef struct
{
    char **WordstoDisplay;
    uint8_t  MenuState;
    uint8_t  MaxStringIndex;
}g_sDisplay;

g_sDisplay g_DisplayStates;

I initialize it.

Code:

void set_display_state(uint8_t state_val, uint8_t state_maxind, char **words)
{
    g_DisplayStates.MenuState = state_val;
    g_DisplayStates.MaxStringIndex = state_maxind;
    g_DisplayStates.WordstoDisplay = words;
}

set_display_state_ext(MAIN_STATE,MAX_MAIN_INDEX, s_MainMenu);

now as I suppose g_DisplayStates.WordstoDisplay points to s_MainMenu.

now I browse with buttons and display strings

Code:

WriteText((uint8_t *)(*g_DisplayStates.WordstoDisplay + g_uiCounterPush));
also tried this way
WriteText((uint8_t *)(g_DisplayStates.WordstoDisplay + g_uiCounterPush));

But I see gibberish. Obviously my pointers math is wrong.
What should I fix?

Originally Posted by Salem

So what's wrong with

Code:

g_DisplayStates.WordstoDisplay[g_uiCounterPush]

Are you sure your subscript is in bounds?

Thank you. My bad.