/**
* \brief Routine to modify address for DMA offset
*
* This function modifies the source/destination address specified by the
* application according to the requirement of DMA
*
* \param address [IN] Address given by application
*
* \return modAddr - modified address
*/
Uint32 DMA_AdjustAddrOffset(Uint32 address)
{
Uint32 modAddr;
/* Call DDC API for modifying the address */
modAddr = DDC_DMAAdjustAddrOffset(address);
return(modAddr);
}
/* Initializes I2S and associated DMA channels for Playback and Record */
Int16 i2sInit(
I2sInitPrms *pI2sInitPrms
)
{
PSP_I2SOpMode opMode;
PSP_I2SConfig i2sTxConfig;
PSP_DMAConfig dmaTxConfig;
PSP_I2SConfig i2sRxConfig;
PSP_DMAConfig dmaRxConfig;
if (pI2sInitPrms->enablePlayback == TRUE)
{
/* Initialize I2S instance for Playback */
i2sTxConfig.loopBack = PSP_I2S_LOOPBACK_DISABLE;
i2sTxConfig.i2sMode = PSP_I2S_SLAVE;
i2sTxConfig.word_len = PSP_I2S_WORDLEN_16;
i2sTxConfig.signext = PSP_I2S_SIGNEXT_ENABLE;
i2sTxConfig.datatype = PSP_I2S_MONO_DISABLE;
i2sTxConfig.fsync_pol = PSP_I2S_FSPOL_LOW;
i2sTxConfig.clk_pol = PSP_I2S_FALLING_EDGE;
i2sTxConfig.datadelay = PSP_I2S_DATADELAY_ONEBIT;
i2sTxConfig.dataformat = PSP_I2S_DATAFORMAT_LJUST;
i2sTxConfig.fsdiv = PSP_I2S_FSDIV32;
i2sTxConfig.clkdiv = PSP_I2S_CLKDIV2;
if (pI2sInitPrms->sampleBySamplePb == TRUE)
{
i2sTxConfig.datapack = PSP_I2S_DATAPACK_DISABLE;
opMode = PSP_I2S_INTERRUPT; /* change from PSP_DMA_INTERRUPT to PSP_I2S_INTERRUPT SampleBySample */
}
else
{
i2sTxConfig.datapack = PSP_I2S_DATAPACK_ENABLE;
opMode = PSP_DMA_INTERRUPT;
}
i2sHandleTx = I2S_INIT(pI2sInitPrms->i2sPb, PSP_I2S_TRANSMIT,
PSP_I2S_CHAN_STEREO, opMode, &i2sTxConfig, NULL);
if (i2sHandleTx == NULL)
{
return I2SSAMPLE_I2SINIT_PB_FAIL;
}
if (pI2sInitPrms->sampleBySamplePb == FALSE)
{
/* Initialize DMA channels for Playback */
dmaTxConfig.pingPongMode = pI2sInitPrms->enableDmaPingPongPb;
dmaTxConfig.autoMode = (pI2sInitPrms->enableDmaPingPongPb == FALSE) ? PSP_DMA_AUTORELOAD_DISABLE : PSP_DMA_AUTORELOAD_ENABLE;
dmaTxConfig.burstLen = PSP_DMA_TXBURST_1WORD;
dmaTxConfig.chanDir = PSP_DMA_WRITE;
dmaTxConfig.trigger = PSP_DMA_EVENT_TRIGGER;
dmaTxConfig.trfType = PSP_DMA_TRANSFER_IO_MEMORY;
dmaTxConfig.dataLen = (pI2sInitPrms->enableDmaPingPongPb == FALSE) ? 2*MAX_I2S_TXBUFF_SZ : 2*2*MAX_I2S_TXBUFF_SZ;
dmaTxConfig.srcAddr = (Uint32)pI2sInitPrms->pingI2sTxLeftBuf;
//dmaTxConfig.callback = I2S_DmaTxCallBack;
switch (pI2sInitPrms->i2sPb)
{
case PSP_I2S_0:
dmaTxConfig.dmaEvt = PSP_DMA_EVT_I2S0_TX;
dmaTxConfig.destAddr = (Uint32)I2S0_I2STXLT0;
break;
case PSP_I2S_1:
dmaTxConfig.dmaEvt = PSP_DMA_EVT_I2S1_TX;
dmaTxConfig.destAddr = (Uint32)I2S1_I2STXLT0;
break;
case PSP_I2S_2:
dmaTxConfig.dmaEvt = PSP_DMA_EVT_I2S2_TX;
dmaTxConfig.destAddr = (Uint32)I2S2_I2STXLT0;
break;
case PSP_I2S_3:
dmaTxConfig.dmaEvt = PSP_DMA_EVT_I2S3_TX;
dmaTxConfig.destAddr = (Uint32)I2S3_I2STXLT0;
break;
default:
return I2SSAMPLE_INV_PRMS;
}
/* Request and configure a DMA channel for left channel data */
hDmaTxLeft = I2S_DMA_INIT(i2sHandleTx, &dmaTxConfig);
if (hDmaTxLeft == NULL)
{
return I2SSAMPLE_DMAINIT_PB_FAIL;
}
/* Request and configure a DMA channel for right channel data */
dmaTxConfig.srcAddr = (Uint32)pI2sInitPrms->pingI2sTxRightBuf;
switch (pI2sInitPrms->i2sPb)
{
case PSP_I2S_0:
dmaTxConfig.destAddr = (Uint32)I2S0_I2STXRT0;
break;
case PSP_I2S_1:
dmaTxConfig.destAddr = (Uint32)I2S1_I2STXRT0;
break;
case PSP_I2S_2:
dmaTxConfig.destAddr = (Uint32)I2S2_I2STXRT0;
break;
case PSP_I2S_3:
dmaTxConfig.destAddr = (Uint32)I2S3_I2STXRT0;
break;
default:
return I2SSAMPLE_INV_PRMS;
}
/* Request and configure a DMA channel for right data */
hDmaTxRight = I2S_DMA_INIT(i2sHandleTx, &dmaTxConfig);
if (hDmaTxRight == NULL)
{
return I2SSAMPLE_DMAINIT_PB_FAIL;
}
if (pI2sInitPrms->enableDmaPingPongPb == FALSE)
{
gi2sTxLeftBuf = DDC_DMAAdjustAddrOffset((Uint32)pI2sInitPrms->pingI2sTxLeftBuf);
gi2sTxRightBuf = DDC_DMAAdjustAddrOffset((Uint32)pI2sInitPrms->pingI2sTxRightBuf);
gi2sNextTxLeftBuf = DDC_DMAAdjustAddrOffset((Uint32)pI2sInitPrms->pongI2sTxLeftBuf);
gi2sNextTxRightBuf = DDC_DMAAdjustAddrOffset((Uint32)pI2sInitPrms->pongI2sTxRightBuf);
gZeroBuf = DDC_DMAAdjustAddrOffset((Uint32)pI2sInitPrms->zeroBuf);
}
/* Zero buffers */
zeroi2sBuf(pI2sInitPrms->enableStereoPb,
pI2sInitPrms->enableDmaPingPongPb,
pI2sInitPrms->pingI2sTxLeftBuf,
pI2sInitPrms->pingI2sTxRightBuf,
pI2sInitPrms->pongI2sTxLeftBuf,
pI2sInitPrms->pongI2sTxRightBuf,
pI2sInitPrms->zeroBuf);
}
}
if (pI2sInitPrms->enableRecord == TRUE)
{
/* Initialize I2S instance for Record */
i2sRxConfig.loopBack = PSP_I2S_LOOPBACK_DISABLE;
i2sRxConfig.i2sMode = PSP_I2S_SLAVE;
i2sRxConfig.word_len = PSP_I2S_WORDLEN_16;
i2sRxConfig.signext = PSP_I2S_SIGNEXT_ENABLE;
i2sRxConfig.datatype = PSP_I2S_MONO_DISABLE;
i2sRxConfig.fsync_pol = PSP_I2S_FSPOL_LOW;
i2sRxConfig.clk_pol = PSP_I2S_FALLING_EDGE;
i2sRxConfig.datadelay = PSP_I2S_DATADELAY_ONEBIT;
i2sRxConfig.dataformat = PSP_I2S_DATAFORMAT_LJUST;
i2sRxConfig.fsdiv = PSP_I2S_FSDIV32;
i2sRxConfig.clkdiv = PSP_I2S_CLKDIV2;
/* If datapack disabled on Tx, we need it disabled on Rx
=> we get 2 words per DMA transfer so the DMA buffers have to be twice as big */
i2sRxConfig.datapack = (pI2sInitPrms->sampleBySamplePb == TRUE) ? PSP_I2S_DATAPACK_DISABLE : PSP_I2S_DATAPACK_ENABLE;
if (pI2sInitPrms->sampleBySampleRec == TRUE)
{
opMode = PSP_I2S_INTERRUPT;
}
else
{
opMode = PSP_DMA_INTERRUPT;
}
i2sHandleRx = I2S_INIT(pI2sInitPrms->i2sRec, PSP_I2S_RECEIVE,
PSP_I2S_CHAN_STEREO, opMode, &i2sRxConfig, NULL);
if (i2sHandleRx == NULL)
{
return I2SSAMPLE_I2SINIT_REC_FAIL;
}
if (pI2sInitPrms->sampleBySampleRec == FALSE)
{
/* Initialize DMA channels for Record */
dmaRxConfig.pingPongMode = pI2sInitPrms->enableDmaPingPongRec;
dmaRxConfig.autoMode = (pI2sInitPrms->enableDmaPingPongRec == FALSE) ? PSP_DMA_AUTORELOAD_DISABLE : PSP_DMA_AUTORELOAD_ENABLE;
dmaRxConfig.burstLen = PSP_DMA_TXBURST_1WORD;
dmaRxConfig.chanDir = PSP_DMA_READ;
dmaRxConfig.trigger = PSP_DMA_EVENT_TRIGGER;
dmaRxConfig.trfType = PSP_DMA_TRANSFER_IO_MEMORY;
dmaRxConfig.dataLen = (pI2sInitPrms->enableDmaPingPongPb == FALSE) ? (2*I2S_RXBUFF_SZ) : 2*(2*I2S_RXBUFF_SZ);
dmaRxConfig.destAddr = (Uint32)pI2sInitPrms->pingI2sRxLeftBuf;
dmaRxConfig.callback = I2S_DmaRxLChCallBack;
switch (pI2sInitPrms->i2sRec)
{
case PSP_I2S_0:
dmaRxConfig.dmaEvt = PSP_DMA_EVT_I2S0_RX;
dmaRxConfig.srcAddr = (Uint32)I2S0_I2SRXLT0;
break;
case PSP_I2S_1:
dmaRxConfig.dmaEvt = PSP_DMA_EVT_I2S1_RX;
dmaRxConfig.srcAddr = (Uint32)I2S1_I2SRXLT0;
break;
case PSP_I2S_2:
dmaRxConfig.dmaEvt = PSP_DMA_EVT_I2S2_RX;
dmaRxConfig.srcAddr = (Uint32)I2S2_I2SRXLT0;
break;
case PSP_I2S_3:
dmaRxConfig.dmaEvt = PSP_DMA_EVT_I2S3_RX;
dmaRxConfig.srcAddr = (Uint32)I2S3_I2SRXLT0;
break;
default:
return I2SSAMPLE_INV_PRMS;
}
/* Request and configure a DMA channel for left channel data */
hDmaRxLeft = I2S_DMA_INIT(i2sHandleRx, &dmaRxConfig);
if (hDmaRxLeft == NULL)
{
return I2SSAMPLE_DMAINIT_REC_FAIL;
}
/* Request and configure a DMA channel for right channel data */
switch (pI2sInitPrms->i2sPb)
{
case PSP_I2S_0:
dmaRxConfig.srcAddr = (Uint32)I2S0_I2SRXRT0;
break;
case PSP_I2S_1:
dmaRxConfig.srcAddr = (Uint32)I2S1_I2SRXRT0;
break;
case PSP_I2S_2:
dmaRxConfig.srcAddr = (Uint32)I2S2_I2SRXRT0;
break;
case PSP_I2S_3:
dmaRxConfig.srcAddr = (Uint32)I2S3_I2SRXRT0;
break;
default:
return I2SSAMPLE_INV_PRMS;
}
dmaRxConfig.destAddr = (Uint32)pI2sInitPrms->pingI2sRxRightBuf;
dmaRxConfig.callback = I2S_DmaRxRChCallBack;
/* Request and configure a DMA channel for right data */
hDmaRxRight = I2S_DMA_INIT(i2sHandleRx, &dmaRxConfig);
if (hDmaRxRight == NULL)
{
return I2SSAMPLE_DMAINIT_REC_FAIL;
}
if (pI2sInitPrms->enableDmaPingPongPb == FALSE)
{
gi2sRxLeftBuf = DDC_DMAAdjustAddrOffset((Uint32)pI2sInitPrms->pingI2sRxLeftBuf);
gi2sRxRightBuf = DDC_DMAAdjustAddrOffset((Uint32)pI2sInitPrms->pingI2sRxRightBuf);
gi2sNextRxLeftBuf = DDC_DMAAdjustAddrOffset((Uint32)pI2sInitPrms->pongI2sRxLeftBuf);
gi2sNextRxRightBuf = DDC_DMAAdjustAddrOffset((Uint32)pI2sInitPrms->pongI2sRxRightBuf);
}
}
}
return I2SSAMPLE_SOK;
}