I am trying to hook os_printf() to allow it to pass through multiple functions however I can't seem to get the VA list to render correctly via passing as arg to a nested function..
For my function below I keep getting undefined but when I replace it with something else I get Invalid Reach. Anyone get this little sniplet to work?
Code: Select all
void * user_printfHook[2] = {NULL, NULL};
void * ICACHE_FLASH_ATTR user_printf(const char *s, ...)
{
/*
os_printf("[%s]\n", __func__);
int i=0;
os_printf("a");
for (i=0; i<(sizeof(user_printfHook)/4); i++)
{
os_printf("b");
if (user_printfHook[i] != NULL)
{
os_printf("c");
((void (*)(const char *))user_printfHook[i])(s);
}
}
*/
os_printf("1");
va_list args;
os_printf("2");
va_start(args, s);
os_printf("3");
ets_vprintf(ets_putc, s, args);
os_printf("4");
va_end(args);
os_printf("5");
}
*Update*
This works fine...
Code: Select all
void write_mychar(char ch)
{
os_printf("%c", ch);
}
void * ICACHE_FLASH_ATTR user_printf(const char *s, ...)
{
int i=0;
for (i=0; i<(sizeof(user_printfHook)/4); i++)
{
if (user_printfHook[i] != NULL)
{
((void (*)(const char *))user_printfHook[i])(s);
}
}
va_list args;
va_start(args, s);
ets_vprintf(write_mychar, s, args);
va_end(args);
}I think this ultimately needs to point to ets_putc or something but it appears undefined.