// This function handles the rate change request from the driver.
// If the rate mode has changed it will create a new DAL.
static HRESULT myAppChangeSR(DICE_DRIVER_CB_DATA * pData)
{
HRESULT hResult = NO_ERROR;
uint32 notify = 0;
DAL_RATE_MODE_ENUM driverRateMode;
driverRateMode = dalRateByID(pData->rate)->rateMode;
if (driverRateMode != lastDriverRatemode)
{
//Driver asked for a change of rate mode
lastDriverRatemode = driverRateMode;
myAppCreateDAL(driverRateMode);
// Send the RX and TX Configuration Notification as this might
// have resulted in a change of the Rx and Tx streams going
// to the computer. This will for example happen if the device
// has ADAT, when going from 48k to 96k ADAT will be reduced
// to 4 channels (SMUXII)
notify |= DD_NOTIFY_RX_CFG_CHG_BIT | DD_NOTIFY_TX_CFG_CHG_BIT;
}
//Change the Clock as instructed by driver, this could be a change
//in clock source, nominal rate or both.
dalSetClockSource (eDAL_INTERFACE_1, pData->source, pData->rate);
//Send the Clock Setting Accept Notification, this should always be send
notify |= DD_NOTIFY_CLOCK_ACP;
diceDriverNotifyHost(notify);
return hResult;
}
// This function is called when the system is initializing. At this point no threads are running and no audio is
// passed. After this function returns all threads are started. It is not legal to wait on semaphores etc at this
// point in the initialization sequence.
HRESULT myAppInitialize(void)
{
HRESULT hResult = NO_ERROR;
// Initialize the SPI devices (targetBoard.c)
targetSpiInit();
// Show the initial switch settings
//Initialize the persistent storage system and check the stored mode
hResult = spsInitialize ("am_sps", 2, sizeof(evmCfg), &evmCfg, 100);
if (hResult!=NO_ERROR)
{
sysLogError(hResult, __LINE__, __FILE__);
}
if (evmCfg.hpgain > 38) evmCfg.hpgain = 38;
//Initialize the mode abstraction system
pCurrentMode = &modeCfg0_Mini;
pCurrentMode->fInit(0);
//create the call back from DAL
dalInstallCallback(&myDalSubscribedEvents, 200, myDalCallBack, 0);
//Create Low Rate DAL for default initialization
myAppCreateDAL(eDAL_RATE_MODE_LOW);
#ifdef _AML
myAppAMLInitialize();
#endif
//Set flag for creation of DAL
// After application initialization is done resume tasks to start them
hResult = myAppResumeTasks();
if (hResult != NO_ERROR) return hResult;
// If the developer wishes to add Command Line Interface, define _CLI_TOOL_MYAPP in make.params
#ifdef _CLI_TOOL_MYAPP
myAppCliInstallTools();
#endif //_CLI_TOOL_MYAPP
return hResult;
}