static void myAppCreateHighRateDAL(void)
{
cliPrintf("high rate dal.\n\r");
if(PreviousDAL)
dalUninstallCallback(myDalCallBack);
//Let's build our audio configuration with "dal", We want to allow all rates above 96KHz
dalCreateInterface(eDAL_INTERFACE_1, eDAL_RATE_MODE_HIGH, MY_INPUT_DEVICES_HIGH, MY_OUTPUT_DEVICES_HIGH);
//default we will run at internal rate 48KHz, the computer will change that when attached
dalSetClockSource (eDAL_INTERFACE_1, eDAL_CLK_SRC_AVS_SYT1, eDAL_NOMINAL_RATE_192);
//we need to setup our routing
//let the 4 AES channels take data from the first Isoc receiver
dalSetRoute(eDAL_INTERFACE_1, TX_AES_CH0_3, RX_AVS1_CH0_3);
//let the first 8 Isoc 1 transmitter channels take data from the 8 AES channels
dalSetRoute(eDAL_INTERFACE_1, TX_AVS1_CH0_3, RX_AES_CH0_3);
//the call back function defined above needs to be installed into "dal"
dalInstallCallback(&myDalSubscribedEvents, 200, myDalCallBack, 0);
//configure device for MIDI based on a function in targetBoard. For the EVAL
//board this is determined by DIP SW 1
myAvcDriverTxConfigLow[0].midiChannels = 1;
myAvcDriverRxConfigLow[0].midiChannels = 1;
avcDriverConfigure (myAvcDriverTxConfigLow, MY_NB_TX_ISOC_STREAMS_HIGH,
myAvcDriverRxConfigLow, MY_NB_RX_ISOC_STREAMS_HIGH,
myAvcDriverCallBack);
myAppInitializeI2S();
myAppSetI2SHigh();
// now we are ready to start the whole thing, it actually wont start until we return from
// this function as threads are not enabled yet. If we want to have some code running after
// this we need to create a thread. We don't need that here, our call backs will do things
// for us.
dalStartInterface(eDAL_INTERFACE_1);
}
// This function creates the DAL based on a rateMode. This is typically
// called as a result of the host/driver requesting a rateMode change.
// Under driver comtrol this should not be called except as a result of
// the driver requesting it.
// This function is also called at boot initialization and could be used to
// initialize a 'stand alone' mode of the device in case no computer is
// connected.
static void myAppCreateDAL(DAL_RATE_MODE_ENUM ratemode)
{
//Let's build our audio configuration with "dal", We will only allow rates within the window of
//the nominal rate requested by the driver.
dalCreateInterface(eDAL_INTERFACE_1, ratemode,pCurrentMode->inputDevices,pCurrentMode->outputDevices);
//Execute the routing for this mode
pCurrentMode->fRouting(ratemode);
STREAM_CFG * pCfg;
switch (ratemode)
{
default:
case eDAL_RATE_MODE_LOW: pCfg = pCurrentMode->low;break;
case eDAL_RATE_MODE_MID: pCfg = pCurrentMode->mid;break;
case eDAL_RATE_MODE_HIGH: pCfg = pCurrentMode->high;break;
}
//This might have resulted in a configuration change so we call
//the diceDriver module to update the configuration
diceDriverConfigureNew(pCfg->pTxStreamCfg, pCfg->nbTxStreams,
pCfg->pRxStreamCfg, pCfg->nbRxStreams,
MY_DEVICE_NICK_NAME,
myDiceDriverCallBack,
pCurrentMode->clocksCaps,
pCurrentMode->clockNames);
//Now we can start the interface
dalStartInterface(eDAL_INTERFACE_1);
}
void StandAloneInitialize (void)
{
//we need to figure out what dal to create
EAP_STND_ALONE_CFG const * pStdaCfg;
DAL_RATE_MODE_ENUM rate_mode = eDAL_RATE_MODE_LOW_MID;
DAL_NOMINAL_RATE_ENUM rate = eDAL_NOMINAL_RATE_ANY;
DAL_CLOCK_SOURCE_ENUM clksrc;
pStdaCfg = eapGetStandaloneCfg();
clksrc = CLOCK_SOURCE[pStdaCfg->clkSrc];
if (clksrc == eDAL_CLK_SRC_AESRX0)
{
rate_mode = eDAL_RATE_MODE_ALL; //auto lock to 32k-192k
}
else
{
//illegal, do something
rate = eDAL_NOMINAL_RATE_48;
}
dalCreateInterface(eDAL_INTERFACE_1, rate_mode, STDA_INPUT_DEVICES,STDA_OUTPUT_DEVICES);
dalSetClockSource (eDAL_INTERFACE_1, clksrc, rate);
dalStartInterface(eDAL_INTERFACE_1);
//update the routing now according to the currently locked rate mode, in auto modes this might change
//so in that case this function must be called.
updateStdaRouting();
}
static HRESULT myAppChangeSR(DICE_DRIVER_CB_DATA * pData)
{
HRESULT hResult = NO_ERROR;
uint32 notify = 0;
if (dalRateByID (pData->rate)->rateMode != lastDriverRateMode)
{
lastDriverRateMode = dalRateByID (pData->rate)->rateMode;
dalCreateInterface(eDAL_INTERFACE_1, lastDriverRateMode, INPUT_DEVICES,OUTPUT_DEVICES);
eapDriverChangeRateMode (lastDriverRateMode);
dalStartInterface(eDAL_INTERFACE_1);
//Send the RX and TX Configuration Notification
notify |= DD_NOTIFY_RX_CFG_CHG_BIT | DD_NOTIFY_TX_CFG_CHG_BIT;
}
//Change the Clock Now
dalSetClockSource (eDAL_INTERFACE_1, pData->source, pData->rate);
//Send the Clock Setting Accept Notification
notify |= DD_NOTIFY_CLOCK_ACP;
diceDriverNotifyHost(notify);
return hResult;
}
