Vincent Trouilliez wrote:
On Thu, 5 Feb 2009 15:18:44 +1030
"Daniel O'Connor" <docon...@gsoft.com.au> wrote:
You can define it like so..
#define LCD_CUSTOM_CHAR_FOO "\012"
then you can do..
char example[] = "foo" LCD_CUSTOM_CHAR_FOO "bar";
You might be able to do something more clever but I don't know how :)
Thanks Daniel (and Ivan as well, off-list), that worked a treat ! :-)
Only drawback I found, is that I must now have TWO #defines for each and
every custom character: one #define to represent the character as a
string, so I can embed it into a string, and also all the #defines I
already had, which represent the actual numerical value, for when I
need to print an individual/discrete character rather than print a
string. It's not the end of the world, but not very elegant either, so
if anybody has a solution to make do with only one define per character,
I am all ears ;-)
An alternative idea is to find an ASCII character that you don't need
otherwise (say, "~"), and use it in your strings. Then do on-the-fly
conversion when outputing the strings:
char example[] = "foo~bar";
void lcdWriteString(const char* p) {
while (char c = *p++) {
if (c == '~') {
lcdWriteChar(LCD_CUSTOM_CHAR_FOO);
} else {
lcdWriteChar(c);
}
}
}
As long as you don't have too many, the overhead won't be bad (and the
substitute characters won't be too confusing). It should also work with
characters >= 128 as the substitutes, I believe.
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