If it works sometimes, chances are it has a dirty contact point or something. It could also just be a damaged tact switch.
#include <stdio.h>
#include <3ds.h>
int main(int argc, char* argv[])
{
gfxInitDefault();
consoleInit(GFX_TOP, NULL);
printf("\n\nPress START to quit\nHOME-button does not work\n");
// Main loop
while (aptMainLoop())
{
hidScanInput();
u32 kDown = hidKeysDown();
if (kDown & KEY_START)
break;
}
gfxExit();
return 0;
}Hardware is not an issue - it's a software thing. The home button works good in other apps.
My homebrew ... the app that I am developing.
I could be wrong but I thought the Home button was spotty for homebrew applications and that is why all the examples use the Start button to exit or have a menu item to specifically exit the application.
Those times are long past :-) In all homebrew that I know, the HOME-button works. Apart from this, another symptom of the home button not working is, that the app will not sleep when shutting the 3ds lid or - even worse - not wake up when opening the lid. The small example program above is showing the issue: It will not sleep when closing the lid.
Now, this is where it gets interresting: In my homebrew, I actually call gspWaitForVBlank() regularly (not the gfx.. functions because I use citro3D) - but in another thread where all my graphics handling is located.
Thanks for the hint. I modified the above example program and shifted all gsp calls to the second thread. However, the home button is still not working. Please check the modified version below:
#include <stdio.h>
#include <3ds.h>
volatile bool runThread = true;
volatile bool gfx_isinit = false;
void threadMain(void *arg) {
gfxInitDefault();
consoleInit(GFX_TOP, NULL);
gfx_isinit = true;
while(runThread) {
gfxFlushBuffers();
gfxSwapBuffers();
gspWaitForVBlank();
}
gfxExit();
}
int main(int argc, char* argv[])
{
Thread threadHandle = threadCreate(threadMain, 0, 4 * 1024, 0x19, -2, false);
while (!gfx_isinit) svcSleepThread(10000000);
printf("\n\nPress START to quit\nHOME-button does not work\n");
// Main loop
while (aptMainLoop())
{
hidScanInput();
u32 kDown = hidKeysDown();
if (kDown & KEY_START)
break; // break in order to return to hbmenu
}
runThread = false;
threadJoin(threadHandle, U64_MAX);
threadFree(threadHandle);
return 0;
}I don't quite understand - how would you modify the code above to make the home button work?
Why would it be a lot of work? The 3ds has cooperative threads btw, you must manually yeld so other threads can run. If you use svcsleepthread on both, that should make the home button work.
