I am working on OMAPL138 to develop a voip solution. I am using the mcbsp to transmit and receive the data simultaneously in multichannel mode. OMAP is in slave mode and receiving clock and frame sync externally, clock being at 4 MHZ. Number of channels used is 64.
The issue i am facing is that the SIO_reclaim for mcbsp output stream hangs with the following configuration for 64 channels although it works fine for 32 channels.
/* * *Mcbsp tx channel confiugration* * */
Mcbsp_DataConfig mcbspChanConfigtx =
{
Mcbsp_Phase_SINGLE,
Mcbsp_WordLength_8,
Mcbsp_WordLength_8, /* Dont care for single phase*/
NUM_OF_CHANNELS,
NUM_OF_CHANNELS, /* Dont care for single phase*/
Mcbsp_FrmSync_DETECT,
Mcbsp_DataDelay_0_BIT,
Mcbsp_Compand_ALAW,
Mcbsp_BitReversal_DISABLE,
Mcbsp_IntMode_ON_SYNCERR,
Mcbsp_RxJust_RZF, /* Dont care for TX */
Mcbsp_DxEna_OFF
};
/**< clock setup for TX section */
Mcbsp_ClkSetup mcbspClkConfigtx =
{
Mcbsp_FsClkMode_EXTERNAL,
8000, /*8Khz*/
Mcbsp_TxRxClkMode_EXTERNAL,
Mcbsp_FsPol_ACTIVE_HIGH,
Mcbsp_ClkPol_RISING_EDGE
};
/**< Multi channel setup */
Mcbsp_McrSetup mcbspMultiChanCtrltx =
{
Mcbsp_McmMode_ALL_CHAN_ENABLED_MASKED,
Mcbsp_PartitionMode_CHAN_0_15,
Mcbsp_PartitionMode_CHAN_16_31,
Mcbsp_PartitionMode_8
};
Mcbsp_ChanParams mcbspChanparamtx =
{
Mcbsp_WordLength_16, /* wordlength configured */
NULL, /* loop job buffer internal */
0, /* user loopjob length */
NULL, /* global error callback */
NULL, /* edma Handle */
1, /* EDMA event queue */
8, /* hwi number */
Mcbsp_BufferFormat_MULTISLOT_INTERLEAVED,
TRUE, /* FIFO mode enabled */
&mcbspChanConfigtx, /* channel configuration */
&mcbspClkConfigtx, /* clock configuration */
&mcbspMultiChanCtrltx, /* multi channel control */
0xffffffff,
0xffffffff,
0x00,
0x00
};
/* Mcbsp rx channel configuration*/
Mcbsp_DataConfig mcbspChanConfigrx =
{
Mcbsp_Phase_SINGLE,
Mcbsp_WordLength_8,
Mcbsp_WordLength_8, /* Dont care for single phase*/
NUM_OF_CHANNELS,
NUM_OF_CHANNELS, /* Dont care for single phase*/
Mcbsp_FrmSync_DETECT,
Mcbsp_DataDelay_0_BIT,
Mcbsp_Compand_ALAW,
Mcbsp_BitReversal_DISABLE,
Mcbsp_IntMode_ON_SYNCERR,
Mcbsp_RxJust_RZF, /* Dont care for TX */
Mcbsp_DxEna_OFF
};
/**< clock setup for TX section */
Mcbsp_ClkSetup mcbspClkConfigrx =
{
Mcbsp_FsClkMode_EXTERNAL,
8000, /*8khz */
Mcbsp_TxRxClkMode_EXTERNAL,
Mcbsp_FsPol_ACTIVE_HIGH,
Mcbsp_ClkPol_RISING_EDGE, /*it must be Falling edge for Rx channel*/
};
/**< Multi channel setup */
Mcbsp_McrSetup mcbspMultiChanCtrlrx =
{
Mcbsp_McmMode_ALL_CHAN_ENABLED_MASKED,
Mcbsp_PartitionMode_CHAN_0_15,
Mcbsp_PartitionMode_CHAN_16_31,
Mcbsp_PartitionMode_8
};
Mcbsp_ChanParams mcbspChanparamrx =
{
Mcbsp_WordLength_16, /* wordlength configured */
NULL, /* loop job buffer internal */
0, /* user loopjob length */
NULL, /* global error callback */
NULL, /* edma Handle */
1, /* EDMA event queue */
8, /* hwi number */
Mcbsp_BufferFormat_MULTISLOT_INTERLEAVED,
TRUE, /* FIFO mode enabled */
&mcbspChanConfigrx, /* channel configuration */
&mcbspClkConfigrx, /* clock configuration */
&mcbspMultiChanCtrlrx, /* multi channel control */
0xffffffff,
0xffffffff,
0x00,
0x00
};
Could anybody please guide me on this. Whether my configuration of the mcbsp is incorrect or there could be some other problem.
