RTOS/TDA2P-ACD: McSPI3 MULTI_CHANNEL Mode Not Working on Custom TDA2P Board

Hi Abhay,

In case of multi channel mode the SPIEN cant be kept active between successive SPI words.

You can refer the section "Force SPIEN[x] Mode" in the TRM.

In the driver you can set the chanParams.spiChipSelectHold  to FALSE which is passed to GIO_create.

Regards,
prasad

Hi Rishabh,

Please suggest the correct MCSPI settings to work in MCSPI_MULTI_CHANNEL mode.

Regards,
Abhay

Hi Abhay,

Please try the steps discussed in the call and reply to this post in case you face issues.
Thanks.

Regards,
Rishabh

Hi Rishabh, Hi Prasad,

With some minor changes in ISR, now I am able to generate interrupts for both accelero and gyro in MCSPI_MULTI_CHANNEL mode.
Following settings as suggested by Prasad worked for me,

"
/*Interrupt OPMODE considered for SPI*/
mcspiPrms.opMode = MCSPI_OPMODE_POLLED;
mcspiPrms.instNum = 2;
mcspiPrms.hwiNumber = 7;
mcspiPrms.enableCache = (UInt32) TRUE;
mcspiPrms.edma3EventQueue = 0;
mcspiPrms.enableErrIntr = (UInt32) FALSE;
mcspiPrms.prcmPwrmEnable = TRUE;
mcspiPrms.spiHWCfgData.masterOrSlave = MCSPI_COMMMODE_MASTER;
/*Configuring for multi channel - different channels for Accelerometer and Gyro*/
mcspiPrms.spiHWCfgData.singleOrMultiChEnable = MCSPI_MULTI_CHANNEL;
mcspiPrms.spiHWCfgData.pinOpModes = MCSPI_PINOPMODE_4PIN;
mcspiPrms.spiHWCfgData.fifoRxTrigLvl = 32;
mcspiPrms.spiHWCfgData.fifoTxTrigLvl = 32;

#ifdef ACCELERO_EN
/*Configuration for channel for ACCELEROMETER*/
mcspiPrms.spiHWCfgData.configChfmt[0].charLength = MCSPI_LEN_16BIT;
mcspiPrms.spiHWCfgData.configChfmt[0].multiWordAccessEnable =
(UInt32) FALSE;
/*Chip Select is Configured as Active Low*/
mcspiPrms.spiHWCfgData.configChfmt[0].spiChipSelectEnablePol =
(UInt32) FALSE;
/*SPICLK active high and sampling occurs on the rising edge*/
mcspiPrms.spiHWCfgData.configChfmt[0].clockMode = MCSPI_MODE0;
mcspiPrms.spiHWCfgData.configChfmt[0].clockRatioExtension = 0;
mcspiPrms.spiHWCfgData.configChfmt[0].spiWordInitDelay = MCSPI_NO_DELAY;
mcspiPrms.spiHWCfgData.configChfmt[0].trasmitReceiveMode = MCSPI_BOTH_RXTX;
mcspiPrms.spiHWCfgData.configChfmt[0].granularityEnable = (UInt32) TRUE;
mcspiPrms.spiHWCfgData.configChfmt[0].busFreq = 1000000;
mcspiPrms.spiHWCfgData.configChfmt[0].spienHighPolarity = (UInt32) FALSE;
mcspiPrms.spiHWCfgData.configChfmt[0].slaveModeChipSelect = MCSPI_SPIEN_0;
mcspiPrms.spiHWCfgData.configChfmt[0].spiDat0Dir = MCSPI_IN;
mcspiPrms.spiHWCfgData.configChfmt[0].spiDat1Dir = MCSPI_OUT;
#endif

/*Configuration for channel for GYRO*/
#ifdef GYRO_EN
mcspiPrms.spiHWCfgData.configChfmt[1].charLength = MCSPI_LEN_16BIT;
mcspiPrms.spiHWCfgData.configChfmt[1].multiWordAccessEnable =
(UInt32) FALSE;
/*Chip Select is Configured as Active Low*/
mcspiPrms.spiHWCfgData.configChfmt[1].spiChipSelectEnablePol =
(UInt32) FALSE;
/*SPICLK active high and sampling occurs on the rising edge*/
mcspiPrms.spiHWCfgData.configChfmt[1].clockMode = MCSPI_MODE0;
mcspiPrms.spiHWCfgData.configChfmt[1].clockRatioExtension = 0;
mcspiPrms.spiHWCfgData.configChfmt[1].spiWordInitDelay = MCSPI_NO_DELAY;

mcspiPrms.spiHWCfgData.configChfmt[1].trasmitReceiveMode = MCSPI_BOTH_RXTX;
mcspiPrms.spiHWCfgData.configChfmt[1].granularityEnable = (UInt32) TRUE;

mcspiPrms.spiHWCfgData.configChfmt[1].busFreq = 1000000;
mcspiPrms.spiHWCfgData.configChfmt[1].spienHighPolarity = (UInt32) FALSE;
mcspiPrms.spiHWCfgData.configChfmt[1].slaveModeChipSelect = MCSPI_SPIEN_0;
mcspiPrms.spiHWCfgData.configChfmt[1].spiDat0Dir = MCSPI_IN;
mcspiPrms.spiHWCfgData.configChfmt[1].spiDat1Dir = MCSPI_OUT;
#endif

And below settings for GIO_create,

chanParams[0].chipSelTimeControl = MCSPI_CLK_CYCLE0;
chanParams[0].fifoEnable = (UInt32) TRUE;
chanParams[0].spiChipSelectHold = (UInt32) FALSE;

/*Channel 0 is used for Accelerometer*/
chanParams[0].chanNum = 0;

ioParams.chanParams = (Ptr) &chanParams[0];
ioParams.model = GIO_Model_ISSUERECLAIM;
ioParams.numPackets = NUM_BUFS + 1;

/*creating accel handle using GIO module*/
mcspiHandle_accel = GIO_create("/mcspi2", GIO_INOUT, &ioParams, &eb);
if (mcspiHandle_accel == NULL)
{
Vps_printf("\r\nCreate Accelero SPI Device FAILED.\r\n");
status = STATUS_FAIL;
}
else
{
chanParams[1].chipSelTimeControl = MCSPI_CLK_CYCLE0;
chanParams[1].fifoEnable = (UInt32) FALSE;
chanParams[1].spiChipSelectHold = (UInt32) FALSE;

/*Channel 1 is used for Gyroscope*/
chanParams[1].chanNum = 1;
ioParams.chanParams = (Ptr) &chanParams[1];
ioParams.model = GIO_Model_ISSUERECLAIM;
ioParams.numPackets = NUM_BUFS + 1;

mcspiHandle_gyro = GIO_create("/mcspi2", GIO_INOUT, &ioParams, &eb);
if (mcspiHandle_gyro == NULL)
{
Vps_printf("\r\nCreate Gyro SPI Device FAILED.\r\n");
status = STATUS_FAIL;
}
}
"

Thank you very much for your support in solving this problem.

Regards,
Abhay