Hello
I've been having some problems in getting the McASP driver running in master mode and both the examples that come with the pspdrivers_01_30_00_06 are in slave mode.
The problem i'm having is the fact that i can control the clock generation, but the framesync generation is not working correctly...
I've tried changing the audio example to see if it had something to do with my project, but the result is the same.
Thanks in advance
Sergio Martins
Code:
/* ========================================================================== */
/* MACRO DEFINITONS */
/* ========================================================================== */
/* 0 bit delay from framsync
* MSB first
* No extra bit padding
* Padding bit (ignore)
* slot Size is 16
* Reads from DMA port
* NO rotation
*/
#define I2S_FMT (CSL_FMKT (MCASP_RFMT_RDATDLY, 0BIT) | \
CSL_FMKT (MCASP_RFMT_RRVRS, MSBFIRST) | \
CSL_FMKT (MCASP_RFMT_RPAD, ZERO) | \
CSL_FMKT (MCASP_RFMT_RSSZ, 16BITS) | \
CSL_FMKT (MCASP_RFMT_RBUSEL, VBUSP) | \
CSL_FMKT (MCASP_RFMT_RROT, NONE))
/* I2S/TDM mode,
* Frame sync is one word
* Rising edge is start of frame
* externally generated frame sync
*/
#define I2S_AFSCTL (CSL_FMKT (MCASP_AFSRCTL_RMOD, I2S) | \
CSL_FMKT (MCASP_AFSRCTL_FRWID, WORD) | \
CSL_FMKT (MCASP_AFSRCTL_FSRM, INTERNAL) | \
CSL_FMKT (MCASP_AFSRCTL_FSRP, RISINGEDGE))
#define I2S_ACLKCTL 0x00000024
#define I2S_AHCLKCTL 0x0000800F
#define I2S_BUFFER_SIZE 160 // bytes
/* ========================================================================== */
/* GLOBAL VARIABLES */
/* ========================================================================== */
/* Buffer alignement is required when working in DMA Mode */
#pragma DATA_ALIGN(i2sWriteBuffer, 128);
Uint8 i2sWriteBuffer[2*I2S_BUFFER_SIZE];
#pragma DATA_ALIGN(i2sReadBuffer, 128);
Uint8 i2sReadBuffer[2*I2S_BUFFER_SIZE];
Mcasp_HwSetupData mcasp0RcvSetup = {
/* .rmask = */ 0xFFFFFFFF, /* All the data bits are to be used */
/* .rfmt = */ I2S_FMT,
/* .afsrctl = */ I2S_AFSCTL,
/* .rtdm = */ 0x00000003, /* slot 1,2 is active (I2S) */
/* .rintctl = */ 0x00000003,//3, /* sync error and overrun error */
/* .rstat = */ 0x000001FF, /* reset any existing status bits */
/* .revtctl = */ 0x00000000, /* DMA request is enabled or disabled */
{
/* .aclkrctl = */ I2S_ACLKCTL,
/* .ahclkrctl = */ I2S_AHCLKCTL,
/* .rclkchk = */ 0x00000000
}
} ;
/* McBsp channel parameters */
Mcasp_ChanParams mcasp0_chanparamIN =
{//INPUT
0x0001, /* number of serialisers */
{Mcasp_SerializerNum_11, }, /* serialiser index */
&mcasp0RcvSetup,
TRUE,
Mcasp_OpMode_TDM, /* Mode (TDM/DIT) */
Mcasp_WordLength_16,
NULL,
0,
NULL,
NULL,
2, /* number of TDM channels */
Mcasp_BufferFormat_1SER_MULTISLOT_NON_INTERLEAVED,
TRUE,
TRUE
};
Mcasp_HwSetupData mcasp0XmtSetup = {
/* .xmask = */ 0xFFFFFFFF, /* All the data bits are to be used */
/* .xfmt = */ I2S_FMT,
/* .afsxctl = */ I2S_AFSCTL,
/* .xtdm = */ 0x00000003, /* slot 1,2 is active (I2S) */
/* .xintctl = */ 0x00000003,//7, /* sync error,overrun error,clK error */
/* .xstat = */ 0x000001FF, /* reset any existing status bits */
/* .xevtctl = */ 0x00000000, /* DMA request is enabled or disabled */
{
/* .aclkxctl = */ I2S_ACLKCTL,
/* .ahclkxctl = */ I2S_AHCLKCTL,
/* .xclkchk = */ 0x00000000
},
};
Mcasp_ChanParams mcasp0_chanparamOUT =
{//OUTPUT
0x0001, /* number of serialisers */
{Mcasp_SerializerNum_13,},
&mcasp0XmtSetup,
TRUE,
Mcasp_OpMode_TDM,
Mcasp_WordLength_16, /* word width */
NULL,
0,
NULL,
NULL,
2, /* number of TDM channels */
Mcasp_BufferFormat_1SER_MULTISLOT_NON_INTERLEAVED,
TRUE,
TRUE
};
/* handle to the input and output streams */
SIO_Handle mcasp0StreamIN = NULL;
SIO_Handle mcasp0StreamOUT = NULL;
/*
* Mcasp device params. To be filled in McaspUserInit function which
* is called before driver creation
*/
Mcasp_Params mcasp0Params;
/* ========================================================================== */
/* FUNCTION DEFINITIONS */
/* ========================================================================== */
/*
* Mcasp init function called when creating the driver.
*/
void Mcasp0UserInit(void)
{
/* power on the Mcasp 2 instance in the PSC */
//Psc_ModuleClkCtrl(Psc_DevId_1, CSL_PSC_MCASP0, TRUE);
Mcasp_init();
/* configure the parameters for the I2S/TDM mode of Mcasp instance 0 */
mcasp0Params = Mcasp_PARAMS;
mcasp0Params.hwiNumber = 8;
mcasp0Params.enablecache = TRUE;
mcasp0Params.mcaspHwSetup.glb.pdir = 0x1C000000;
mcasp0Params.mcaspHwSetup.glb.ditCtl= 0;
mcasp0Params.mcaspHwSetup.rx.clk.clkSetupHiClk = I2S_AHCLKCTL;
mcasp0Params.mcaspHwSetup.rx.clk.clkSetupClk = I2S_ACLKCTL;
mcasp0Params.mcaspHwSetup.rx.frSyncCtl = I2S_AFSCTL;
mcasp0Params.mcaspHwSetup.rx.fmt = I2S_FMT;
mcasp0Params.mcaspHwSetup.tx.clk.clkSetupHiClk = I2S_AHCLKCTL;
mcasp0Params.mcaspHwSetup.tx.clk.clkSetupClk = I2S_ACLKCTL;
mcasp0Params.mcaspHwSetup.tx.frSyncCtl = I2S_AFSCTL;
mcasp0Params.mcaspHwSetup.tx.fmt = I2S_FMT;
}
void Mcasp0Transfers(void)
{
Int16 nmadus[2] = {0,0}, ping = 0;
Ptr rcv,xmt;
SIO_Attrs sioAttrs;
sioAttrs = SIO_ATTRS;
sioAttrs.nbufs = 8;
sioAttrs.align = 128;
sioAttrs.model = SIO_ISSUERECLAIM;
mcasp0_chanparamIN.edmaHandle = edmaGetHandle();
mcasp0_chanparamOUT.edmaHandle = edmaGetHandle();
/* open the I/O streams */
mcasp0StreamOUT = SIO_create("/dioMcasp0OUT", SIO_OUTPUT, I2S_BUFFER_SIZE, &sioAttrs);
mcasp0StreamIN = SIO_create("/dioMcasp0IN", SIO_INPUT, I2S_BUFFER_SIZE, &sioAttrs);
if ( (mcasp0StreamIN == NULL) || (mcasp0StreamOUT == NULL) )
{
LOG_printf(&trace,"\r\nCreate I2S stream FAILED.");
return;
}
memset(i2sReadBuffer, 0, I2S_BUFFER_SIZE);
memset(i2sWriteBuffer, 0x55, I2S_BUFFER_SIZE);
/* Issue an empty/full buffer to the input/output stream */
if ((SIO_issue(mcasp0StreamIN, (Ptr *)&i2sReadBuffer[ping * I2S_BUFFER_SIZE], I2S_BUFFER_SIZE/2, NULL) != SYS_OK) ||
(SIO_issue(mcasp0StreamOUT, (Ptr *)&i2sWriteBuffer[ping * I2S_BUFFER_SIZE], I2S_BUFFER_SIZE/2, NULL) != SYS_OK))
{
LOG_printf(&trace,"\r\nFailed to issue empty buffer to stream\n");
}
while (1)
{
ping ^= 1;//Change the buffers used by the driver
/* Issue an empty/full buffer to the input/output stream */
if ((SIO_issue(mcasp0StreamIN, (Ptr *)&i2sReadBuffer[ping * I2S_BUFFER_SIZE], I2S_BUFFER_SIZE/2, NULL) != SYS_OK) ||
(SIO_issue(mcasp0StreamOUT, (Ptr *)&i2sWriteBuffer[ping * I2S_BUFFER_SIZE], I2S_BUFFER_SIZE/2, NULL) != SYS_OK))
{
LOG_printf(&trace,"\r\nFailed to issue empty buffer to stream\n");
}
/* Reclaim full buffer from the input stream */
nmadus[0] = SIO_reclaim(mcasp0StreamIN, (Ptr *)&rcv, NULL);
/* Reclaim empty buffer from the output stream to be reused */
nmadus[1] = SIO_reclaim(mcasp0StreamOUT, (Ptr *)&xmt, NULL);
if ((nmadus[0] < 0) || (nmadus[1] < 0))
{
LOG_printf(&trace,"\r\nError reclaiming empty buffer from the output stream");
}
}
}
