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Added comments to the app_launch example for better understanding for beginners

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This commit is contained in:
profi200 2014-11-20 14:58:24 +01:00
parent 463f366e2b
commit dfde24702b
1 changed files with 17 additions and 7 deletions
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24
examples/app_launch/source/main.c
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@ -6,37 +6,47 @@
int main()
{
srvInit();
aptInit();
gfxInit();
hidInit(NULL);
srvInit(); // Needed
aptInit(); // Needed
gfxInit(); // Init graphic stuff
hidInit(NULL); // For input (buttons, touchscreen...)
// We need these 2 buffers for APT_DoAppJump() later. They can be smaller too
u8 buf0[0x300];
u8 buf1[0x20];
// Loop as long as the status is not exit
while(aptMainLoop())
{
// Scan hid shared memory for input events
hidScanInput();
if(hidKeysDown() & KEY_A)
if(hidKeysDown() & KEY_A) // If the A button got pressed, start the app launch
{
// Clear both buffers
memset(buf0, 0, 0x300);
memset(buf1, 0, 0x20);
// Open an APT session so we can talk to the APT service
aptOpenSession();
APT_PrepareToDoAppJump(NULL, 0, 0x0004001000022400LL, 0); // *EUR* camera app
APT_DoAppJump(NULL, 0x300, 0x20, buf0, buf1);
// Prepare for the app launch
APT_PrepareToDoAppJump(NULL, 0, 0x0004001000022400LL, 0); // *EUR* camera app title ID
// Tell APT to trigger the app launch and set the status of this app to exit
APT_DoAppJump(NULL, 0x300 /* size of buf0 */, 0x20 /* size of buf1 */, buf0, buf1);
// Close the APT session because we don't need APT anymore
aptCloseSession();
}
// Flush + swap framebuffers and wait for VBlank. Not really needed in this example
gfxFlushBuffers();
gfxSwapBuffers();
gspWaitForVBlank();
}
// Deinit everything before the app process get's terminated
hidExit();
gfxExit();
aptExit();