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TMDSLCDK6748: receive and send audio data SAMPLE PER SAMPLE

Christoph Baumgartner
Prodigy 80 points

Part Number: TMDSLCDK6748

Hi,

I bought the TMDSLCDK6748 evaluation board for my active noise cancellation project.

I've tried the "MCASP_Audio_lcdkOMAPL138_c674xExampleProject" from the SDK and also the "mcasp_c674x_c6748_lcdkC6748" example from the starterware and both are working.

The problem is, that this examples work with transfering FRAMES.

I would like to have a SAMPLE PER SAMPLE example because of the acitve noise cancelling application. Is there something like this or could you give me a short code example how to receive and send samples one by one?

I've searched a lot in forums and also books and so on, but don't know how to proceed...

Thank you very much.

  • 0
    TI__Mastermind 30365 points
    Christoph,

    Will get back to you.

    Lali
  • 0
    TI__Mastermind 30365 points
    Christoph,

    Here's a suggestion to do a SAMPLE per SAMPLE:

    1. Change the BUFLEN in audioSample_io.c from 1024 to 1.
    2. Rebuild the project.

    This will allow you to get a frame with 1 sample in it.
    Hope this helps.

    Lali
  • 0 in reply to Lalindra Jayatilleke
    Prodigy 80 points
    Hi Lali,

    Thanks for your response.

    1) I tried your solution, but it didn't work.
    Building and debuging is working, but there is no sound at the LINE OUT when setting BUFLEN to 1.

    I also tried different combination of BUFLEN and BUFALIGN.
    It works with BUFLEN = 8 and BUFLEN = 64, and so on... but not with BUFLEN = 1.

    2) Another question is, how can I use all 4 inputs independent of each other (right, left MIC IN and right, left LINE IN) and both outputs (right, left LINE OUT), because i want to use the board for a MIMO-ANC System?
    So how do I have to change the code?
    Do I have to add channels at the Mcasp_ChanParams in mcasp_cfg.c?
    And if yes, how do I do this correctly?

    Thank you very much!

    Christoph
  • 0 in reply to Christoph Baumgartner
    Prodigy 80 points
    Hi,

    Maybe someone cold help me in this case, because the examples from the SDK and the Starterware aren't very userfriendly or easy to use for beginners at working with dsp-boards.

    Aren't there simple examples for the TMDSLCDK6748 like those who come with the TMS320C6713 DSK from Spectrum Digital, e.g. the "sin8_LED" example? (I would use the TMS320C6713, but the board has too less analog inputs...)

    Thank you very much!

    BR, Christoph
  • 0 in reply to Christoph Baumgartner
    TI__Mastermind 30365 points
    Christoph,

    The EDMA3 may require the minimum transfer block size. Have you tried BUFLEN = 2 or 4?
    If that works, then you can use 2 or 4 samples in a frame, assuming your algorithm can tolerate 2 or 4 samples in a chunk.

    Otherwise, you would have to implement the sample by sample approach. Will need to use the interrupts (or polling) from McASP instead of EDMA3 to be informed when a sample is ready.

    Fortunately, there is a McASP polling example that uses this approach in Processor SDK. It is located at \pdk_omapl137_1_0_3\packages\ti\board\diag\mcasp\src\mcasp_poll_test.c .

    Hope this helps.

    Lali
  • 0 in reply to Lalindra Jayatilleke
    Prodigy 80 points

    Lalo,

    Thank you very much.

    A polling or interrupt example is what i'm searching for.

    My only question is, how to run the mcasp_poll_test.c example?

    I've included all necessary files, but some identifier are missing and a lot of functions are declared implicitly (see attached file). I've also tried it with additional peripheral information, like the soc_C6748.h file, but without any success.

    Tank you for your help!

    Christoph

    Fullscreen 5025.problems.txt Download 
    Description	Resource	Path	Location	Type
#20 identifier "CSL_BOOTCFG_PADCONFIG0_MUXMODE_MASK" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 113	C/C++ Problem
#20 identifier "CSL_BOOTCFG_PADCONFIG0_MUXMODE_SHIFT" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 113	C/C++ Problem
#20 identifier "CSL_I2C_0_DATA_CFG" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 128	C/C++ Problem
#20 identifier "CSL_I2C_0_DATA_CFG" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 143	C/C++ Problem
#20 identifier "CSL_I2C_0_DATA_CFG" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 159	C/C++ Problem
#20 identifier "CSL_I2C_0_DATA_CFG" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 379	C/C++ Problem
#20 identifier "CSL_MCASP_1_CFG_REGS" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 199	C/C++ Problem
#20 identifier "CSL_MCASP_1_CFG_REGS" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 299	C/C++ Problem
#20 identifier "CSL_MCASP_1_CFG_REGS" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 333	C/C++ Problem
#20 identifier "CSL_MPU_INTC_MPU_DISTRIBUTOR_REGS" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 101	C/C++ Problem
#20 identifier "CSL_MPU_INTC_MPU_PHYS_CPU_IF_REGS" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 100	C/C++ Problem
#20 identifier "CSL_UART_0_REGS" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 88	C/C++ Problem
#20 identifier "hBootCfg" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 113	C/C++ Problem
#20 identifier "MCASP_PIN_ACLKR" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 274	C/C++ Problem
#20 identifier "MCASP_PIN_ACLKX" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 272	C/C++ Problem
#20 identifier "MCASP_PIN_AFSR" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 273	C/C++ Problem
#20 identifier "MCASP_PIN_AFSX" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 271	C/C++ Problem
#20 identifier "MCASP_PIN_AHCLKX" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 275	C/C++ Problem
#20 identifier "MCASP_RX_CLK_INTERNAL" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 230	C/C++ Problem
#20 identifier "MCASP_RX_CLK_POL_FALL_EDGE" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 231	C/C++ Problem
#20 identifier "MCASP_RX_CLKFAIL" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 287	C/C++ Problem
#20 identifier "MCASP_RX_DMAERROR" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 286	C/C++ Problem
#20 identifier "MCASP_RX_FS_INT_BEGIN_ON_RIS_EDGE" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 224	C/C++ Problem
#20 identifier "MCASP_RX_FS_WIDTH_BIT" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 223	C/C++ Problem
#20 identifier "MCASP_RX_MODE_NON_DMA" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 204	C/C++ Problem
#20 identifier "MCASP_RX_OVERRUN" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 289	C/C++ Problem
#20 identifier "MCASP_RX_SYNCERROR" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 288	C/C++ Problem
#20 identifier "MCASP_TX_CLK_INTERNAL" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 238	C/C++ Problem
#20 identifier "MCASP_TX_CLK_INTERNAL" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 246	C/C++ Problem
#20 identifier "MCASP_TX_CLK_INTERNAL" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 299	C/C++ Problem
#20 identifier "MCASP_TX_CLK_POL_RIS_EDGE" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 239	C/C++ Problem
#20 identifier "MCASP_TX_CLK_POL_RIS_EDGE" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 247	C/C++ Problem
#20 identifier "MCASP_TX_CLKCHCK_DIV1" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 232	C/C++ Problem
#20 identifier "MCASP_TX_CLKFAIL" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 282	C/C++ Problem
#20 identifier "MCASP_TX_DMAERROR" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 281	C/C++ Problem
#20 identifier "MCASP_TX_FS_INT_BEGIN_ON_RIS_EDGE" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 227	C/C++ Problem
#20 identifier "MCASP_TX_MODE_NON_DMA" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 207	C/C++ Problem
#20 identifier "MCASP_TX_STAT_DATAREADY" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 307	C/C++ Problem
#20 identifier "MCASP_TX_SYNCERROR" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 283	C/C++ Problem
#20 identifier "MCASP_TX_UNDERRUN" is undefined	mcasp_poll_test.c	/McAsp_Polling	line 284	C/C++ Problem
gmake: *** [mcasp_poll_test.obj] Error 1	McAsp_Polling		 	C/C++ Problem
gmake: Target 'all' not remade because of errors.	McAsp_Polling		 	C/C++ Problem
#112-D statement is unreachable	mcasp_poll_test.c	/McAsp_Polling	line 352	C/C++ Problem
#190-D enumerated type mixed with another type	.ccsproject	/McAsp_Polling	line 222, external location: C:\TI\SDK_RTOS_OMAPL138_LCDK\pdk_omapl138_1_0_6\packages\ti\csl\src\ip\arm_gic\V0\csl_armGicAux.h	C/C++ Problem
#225-D function "CSL_A15_INIT_copyVectorTable" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 106	C/C++ Problem
#225-D function "MCASP_PIN_AXR" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 276	C/C++ Problem
#225-D function "McASPIsSerializerRcvReady" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 333	C/C++ Problem
#225-D function "McASPIsSerializerXmtReady" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 339	C/C++ Problem
#225-D function "McASPPinDirInputSet" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 277	C/C++ Problem
#225-D function "McASPPinDirOutputSet" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 271	C/C++ Problem
#225-D function "McASPPinMcASPSet" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 269	C/C++ Problem
#225-D function "McASPRxBufRead" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 336	C/C++ Problem
#225-D function "McASPRxClkCfg" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 230	C/C++ Problem
#225-D function "McASPRxClkCheckConfig" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 232	C/C++ Problem
#225-D function "McASPRxClkPolaritySet" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 231	C/C++ Problem
#225-D function "McASPRxClkStart" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 299	C/C++ Problem
#225-D function "McASPRxEnable" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 311	C/C++ Problem
#225-D function "McASPRxFmtGet" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 210	C/C++ Problem
#225-D function "McASPRxFmtI2SSet" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 203	C/C++ Problem
#225-D function "McASPRxFmtSet" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 212	C/C++ Problem
#225-D function "McASPRxFrameSyncCfg" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 223	C/C++ Problem
#225-D function "McASPRxIntEnable" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 286	C/C++ Problem
#225-D function "McASPRxReset" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 199	C/C++ Problem
#225-D function "McASPRxSerActivate" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 304	C/C++ Problem
#225-D function "McASPRxTimeSlotSet" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 255	C/C++ Problem
#225-D function "McASPSerializerRxSet" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 262	C/C++ Problem
#225-D function "McASPSerializerTxSet" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 261	C/C++ Problem
#225-D function "McASPTxBufWrite" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 343	C/C++ Problem
#225-D function "McASPTxClkCfg" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 238	C/C++ Problem
#225-D function "McASPTxClkCfg" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 246	C/C++ Problem
#225-D function "McASPTxClkCheckConfig" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 240	C/C++ Problem
#225-D function "McASPTxClkCheckConfig" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 248	C/C++ Problem
#225-D function "McASPTxClkPolaritySet" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 239	C/C++ Problem
#225-D function "McASPTxClkPolaritySet" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 247	C/C++ Problem
#225-D function "McASPTxClkStart" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 300	C/C++ Problem
#225-D function "McASPTxEnable" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 310	C/C++ Problem
#225-D function "McASPTxFmtGet" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 214	C/C++ Problem
#225-D function "McASPTxFmtI2SSet" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 206	C/C++ Problem
#225-D function "McASPTxFmtSet" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 216	C/C++ Problem
#225-D function "McASPTxFrameSyncCfg" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 226	C/C++ Problem
#225-D function "McASPTxIntEnable" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 281	C/C++ Problem
#225-D function "McASPTxReset" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 200	C/C++ Problem
#225-D function "McASPTxRxClkSyncEnable" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 253	C/C++ Problem
#225-D function "McASPTxSerActivate" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 303	C/C++ Problem
#225-D function "McASPTxStatusGet" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 307	C/C++ Problem
#225-D function "McASPTxTimeSlotSet" declared implicitly	mcasp_poll_test.c	/McAsp_Polling	line 256	C/C++ Problem
 declared implicitly

  • 0 in reply to Christoph Baumgartner
    TI__Mastermind 30365 points

    Christoph

    My only question is, how to run the mcasp_poll_test.c example?

    Please see http://software-dl.ti.com/processor-sdk-rtos/esd/docs/05_01_00_11/rtos/Board_EVM_Abstration.html#diagnostics mcasp_poll_test.c is part of the DIAGNOSTICS package.

    Lali

  • 0 in reply to Lalindra Jayatilleke
    Prodigy 80 points
    Lali,

    I don't want to only build a .out file tu run it with the board.
    Which additional files do I need for building and debuging the "mcasp_poll_test.c" example?
    Because when I include all header file paths which are #included in the main c.file, I have a lot of errors because of undefined identifier.

    Thank you,
    Christoph
  • 0 in reply to Christoph Baumgartner
    TI__Mastermind 27355 points
    Hi Christoph,

    Please refer to the makefile located at for \pdk\packages\ti\board\diag\mcasp\build\evmOMAPL137\c674x to see what needs to be added to the CCS project. If you are getting undefined errors, I suspect you haven't linked the required libraries.