I2c driver modification in combination of audioSample.pjt and mmcsdSample.pjt C6747 EVM

Thanks, i am trying to merge the files, Hope i can fix it.

Hi imtiaz,

I follow your steps to merge the two projects. The new project is built alright. Unfortunately, "Error getting drive ID." happens returned by excuting "result = getdriveid(BFS_DEVICE_TYPE_MMC, 0 , 0, driveId);"  I try to debug into the function getdriveid(), but the file rtfsPosix.c cannot be found, and I cannot search it neither. When I comment "result = getdriveid(BFS_DEVICE_TYPE_MMC, 0 , 0, driveId);", I can hear the audio from HPout. So i think device "i2c0" is initialized OK.

The two projects are: audioSample.pjt in pspdrivers_01_30_01 and mmcsdSample.pjt in rtfs_1_10_01_31 example.

EDMA version: edma3_lld_01_11_01_04

cgt 6.1.9; ccs: 3.3; BIOS: 5.41.07.24

Following is the detailed steps I conduct:

1,

Imtiaz SMA said:

1. Merge the "audio_evmInit.c" and "mmcsd_evmInit.c" files. Take care that the PINMUX for all the devices are initialized properly(Mcasp,i2c,Mmcsd).

I merge file "audio_evmInit.c" and "mmcsd_evmInit.c"  into "audio_mmcsd_evmInit.c", and their header files "Audio_evmInit.h" and "Mmcsd_evmInit.h" into "Audio_Mmcsd_evmInit.h", then in project "evmInit.pjt", I substitue the old files by new merged files and rebuild it.

Here is the content: audio_mmcsd_evmInit.c and Audio_Mmcsd_evmInit.h

2,

Imtiaz SMA said:

2. Then merge both the examples projects

    1. Merge the "audioSample.tci" and the "mmcsd.tci" files. Remove the duplicate entries for the I2c driver.

    2. Merge the audioSample.tcf and mmcsdSample.tcf files next.

I comment the line "utils.importFile("ti/pspiom/platforms/evm6747/mmcsd.tci")" and use the devices created by unchanged audioSample.tci. Also, i modify the init function called by i2c0 to _audiommcsdUserInit and paramerter to _audiommcsdParam. What's more, i adopt only one task.

Here is the merged audio_libo.tcf and audio_libo.tci. (I modified the project audioSample.pjt a bit into audio_libo.pjt, and it works fine before i merge it with mmcsdSample.pjt)

 3,

Imtiaz SMA said:

   3. Now merge the sample files .

First, I merge the main function:

main said:

Void main(Void)
{
    LOG_printf(&trace,"\r\nAudio Sample Main\n");

    /* call the function to configure the evm specific options                */
    configureAudio();

  /* DSP/BIOS File System initialization */
    rtfsPosixInit();

    /* Create semaphore for card insert/remove interrupt mode */
    cardDetectSem = SEM_create(0, NULL);
   
    return;
}

Second, i move the configureMmcsd() and mmcsdStorageInit(), etc al into audio echo task:

echo task said:

........

Void Audio_echo_Task()
{
    volatile int i32Count;
    Int nmadus = 0;
     Int16 *rcv,*xmt;
 /*  From mmcsdSample.c ======================= */
 Int32       result;
    char        driveId[3];

    LOG_printf(&trace,"\r\nMMC/SD Application Task Starting.");

    /* Configure MMC/SD */
    configureMmcsd((PSP_mmcsdGpioInputIsr)mmcsdGpioInputIsr);

    LOG_printf(&trace,"\r\nConfigured MMC/SD card.");

    /* Initialize for MMC/SD storage device */
    result = mmcsdStorageInit();
    if (result == SUCCESS) {
        LOG_printf(&trace,"\r\nBlock Driver initialization succeeded.");
    }
    else {
       /* Most likely not enough memory */
        LOG_printf(&trace,"\r\nBlock Driver initialization failed, error = %d.", result);
        return;
    }

    /* verify that the MMC/SD card is present before continuing */
    PollDeviceReady();

    /* Get drive letter associated with MMC/SD       */
    result = getdriveid(BFS_DEVICE_TYPE_MMC, 0 , 0, driveId);
    if (result != -1) {
        LOG_printf(&trace,"\r\nGet drive ID DONE. %s", driveId);
    }
    else {
        LOG_printf(&trace,"\r\nError getting drive ID.\n");
        return;
    }
 
 LOG_printf(&trace,"\r\nMMCSD File Operations Starting.");
    //doFileIO(driveId);

    /* initialise the edma library                                            */
    edma3init();

    /* Call createStream function to create I/O streams                       */
    createStreams();

    /* Call prime function to do priming                                      */
    prime();

    /* Forever loop to continously receviec and transmit audio data           */
    for (i32Count = 0; i32Count >= 0; i32Count++)
    {

        ....audio process.....   

    }
   
    LOG_printf(&trace,"\r\nStarting rtfs shell.");
    //bfs_shell();

    /* Shutdown the MMCSD storage device */
    result = mmcsdStorageDeInit();
   
    if (result == SUCCESS) {
        LOG_printf(&trace,"\r\nmmcsdStorageDeInit succeeded.");
    }
    else {
        LOG_printf(&trace,"\r\nmmcsdStorageDeInit failed, error = %d.", result);
    }
}  

regards,

Bo Li 

Hi Bo Li,

Are you using the example project from the PSP drivers package for the mmcsd? If no, can you please try using this code.

Also check if the card detect logic in triggerring an interrupt and the i2c channels are properly in the mmcsd configuration function

regards,

imtiaz

Imtiaz SMA said:

Are you using the example project from the PSP drivers package for the mmcsd? If no, can you please try using this code.

I use the example project from rtfs_1_10_01_31, cause i want to read the data in SD card into the computer after I recorded data and saved them in SD. I think i have to implement a filesystem on SD card.

Anyway, I will try the example project from PSP drivers package.

Regards,

Bo Li

Hi Bo Li!

I'm working in merged the two sample projects to save the audio into SD card? Can you fix your problem? I'm new in this kind of thing and I have a lot of questions. Can you give me some advice?

Thanks!

 Paulina