#3997 - Jack Handey - Sat Mar 15, 2003 3:06 am
Does anyone have their own custom sprintf? Or does anyone know how to write one?
#4036 - Lord Graga - Sun Mar 16, 2003 7:38 pm
You mean a write text function?
#4052 - satanicfreak2 - Mon Mar 17, 2003 2:57 am
download my tetris demo. It has the source code for writing text.
#4263 - niltsair - Wed Mar 26, 2003 7:23 am
You can also output some text on the Mappy emulator...
http://www.bottledlight.com/
By using this code :
| Code: |
ARM SDT Code:
void dprint(char *string) {
__asm {
mov r2, r0
mov r0, #0xC0DED00D
mov r1, #0
and r0, r0, r0
}
} |
| Code: |
GCC Code:
void dprint(const char *sz) {
asm volatile("
mov r2, %0
ldr r0, =0xc0ded00d
mov r1, #0
and r0, r0, r0
" :
/* No output */ :
"r" (sz) :
"r0", "r1", "r2");
} |
(From Mappy Specs Document)
I found it usefull for debug purpose, no need find ways to display strings or numbers on the Gba Screen (by using some tiles like i did at first, or pixels).
#4278 - joet - Wed Mar 26, 2003 1:52 pm
To handle the variable args use va_list and vsprintf:
| Code: |
void txprint(char *string, ...){
va_list argptr;
va_start(argptr, string);
vsprintf(text_data, string, argptr);
va_end(argptr);
_print(text_data);
}
|
(You'll need ot include stdarg.h)