Audio stops after writing to EEPROM

bl_ackrain · June 28, 2019, 3:20pm

I have encounter this bug along time ago when i added cookies save to Celeste, calling cookie.begin() before Pokitto::Core::begin() fix the problem back then, but i don’t know what was causing it until now.
the problem is iap eeprom write disable timer (Timer32_0) which is needed to generate audio data and output.

github.com

pokitto/PokittoLib/blob/93c0f24f8bc25088c1ce531e5bf2f881e33eed2c/Pokitto/POKITTO_HW/iap.cpp#L304


	command[2] = (uint32_t) buffAddress;
	command[3] = byteCount;
	command[4] = SystemCoreClock/1000;


	/* Invoke IAP call...*/
#if (EEPROM_PROFILE!=0)
	LPC_CT32B0->TCR = 1;
	__disable_irq();
	iap_entry(command, result);
	__enable_irq();
	LPC_CT32B0->TCR = 0;
#else
  __disable_irq();
	iap_entry(command, result);
	__enable_irq();
#endif
	if (0 != result[0])
	{
		//Trap error
		while(1);
	}

a simple fix is to remove that line or to disable it only if the sound enabled

#if (POK_ENABLE_SOUND==0)
LPC_CT32B0->TCR = 0;
#endif

after the fix we don’t need to re-init sound in cookie.save()

github.com

pokitto/PokittoLib/blob/93c0f24f8bc25088c1ce531e5bf2f881e33eed2c/Pokitto/POKITTO_CORE/PokittoCookie.cpp#L127


}


bool Cookie::saveCookie() {
if (!_status || !_pointer) return false; //return if not initialized
char* p = _pointer;
_head=0;
_block=0;
_block=findMyNextBlock();
for (int i=0; i<_datasize; i++) writeQueue(*p++);
#if POK_ENABLE_SOUND
Pokitto::soundInit(true); //re-init sound
#endif
return true;
}


bool Cookie::loadCookie() {
if (!_status || !_pointer) return false;
char* p = _pointer;
_head=0;
_block=0;
_block=findMyNextBlock();