TMS320DM3x Processors

DM355_MMC

Tenny Thomas — Thu, 16 Apr 2009 05:22:42 GMT

The DM355 processor is interfaced to MMC card through flash card interface. Please let me know what is the memory capacity of MMC card that can be used.

DM365: Interleaving order of channels swaps periodically

Tom Hanson — Fri, 20 Nov 2009 21:20:43 GMT

Odd, but true: the interleaving order of the right and left channels occasionally swaps. I've been hearing it for weeks and I finally caught it on a data dump.

In the raw data buffer returned from DMAI's Sound_read(), usually the left channel is first, followed by the right channel. Periodially, this will change! Typically between invocations of an application but at least once while it was running.

Currently I'm using ALSA, previously I was using OSS. This occurred in both scenarios.

Any suggestions for where to look? I don't see any configurable options that should impact this.

TIA!

Issue with USB File Storage Gadget on windows machine.

Snehal Parmar — Mon, 16 Nov 2009 22:37:26 GMT

Hi,

I am trying to utlize USB as a file storage gadget functionality of DM355 with EVM board.

I am using SD card as the mass storage device.

After inserting "g_file_storage.ko" module I am able to view/access the SD card plugged on EVM board as USB device on a Linux machine(connected the EVM to a Linux machine using a USB cable). The SD card has Fat32 Filesystem. It works fine.

However if I connect EVM to a Windows machine, I do not see the drive. The windows machine identifies that there is some mass storage device connected, but it does not show it as a drive. If I see the properties window of the USB device I see "This device is working properly.".

Are there any settings needed to be done for the "file storage" module so that it gets properly detected and accessible on Windows machine ?

Anyone faced such issue?

Thanks,

Snehal

DM365 AEMIF with multiple CE

Marco Braga — Tue, 10 Nov 2009 15:21:11 GMT

Hello,

I'm trying to understand if the following setup will work and what is involved at driver level to support it. Basically I'd like to connect DM365's AEMIF to DM6435's HPI and preserve NAND functionality on DM365. My idea is to use current CE0 to select the NAND chip (no change from EVM setup) and connect CE1 to DM6435's SPI along with required signals. But since the AEMIF controller is the same, I am not sure if "normal mode" and "NAND flash mode" can be used at the same time or in mutual exclusion or what involves switching from one mode to the other.

I've checked DM365's AEMIF document but I am not sure of what will this setup impact at driver level. I'd like to preserve current MTD functionality and add communication through AEMIF/HPI on the other chip select.

Any help, comment or suggestion will be appreciated.

how to used SDMMC.INS pin?

jeffrey — Fri, 20 Nov 2009 09:41:58 GMT

Hi,

I am reading the source code about MMC card on DM355, I found that SDMMC.INS pin was routed to MSP430, but I can't find any code to read the status of SDMMC.INS in linux driver code, so, My question is where i can find the code to handle the pin SDMMC.INS.

thanks

DMA parameters

Kirill — Mon, 16 Nov 2009 09:01:25 GMT

Hello!

I have read SPRUEE4A.pdf and I can't understand how can I select DMA parametrs, e.g. A or AB-synchronized transfer mode.

Can you help me?

Thank you and excuse me for my bad english.

TMS320DM365 powered through USB

Michael — Thu, 19 Nov 2009 23:46:23 GMT

Hello,

I have a very simple questions to ask about the DM36x microcontroller:

Can I power the board using USB (5V + 500mA max.)? My board has a few sensors that do not consume too much (max 100mA at 3.3V I would say).

Thanks,

Mike

Setting VBPE clock freq to a low value while ARM processor runs at Max clock(216MHz).

Snehal Parmar — Fri, 13 Nov 2009 22:07:47 GMT

Hi,

I have an LCD interfaced to a DM355 based board. LCD supports max of 10Mhz frequency.

I have configured DM355 PLL1 to max-432Mhz. I need it to run processor at max frequency.

Now if I choose SYSCLK3 as the VPBE clock then the minimum clock that can be generated is 13.5Mhz(set PLLDIV3 to31).

Is there a way/trick to get VBPE frequency to lower than 10Mhz without using an external clock source ?

Thanks,

Snehal

USB host problems in DM365

George K — Mon, 05 Oct 2009 07:27:48 GMT

We are facing problems in USB host support in DM365 EVM and DVR boards.

Following is the description:

===================================================================

Linux kernel : 2.6.18 ( LSP 2.10) [ as provided with the EVM & DVR ]

Problem1 : USB audio does not work DMA is enabled. [ Seen in DVR & EVK]

The problem occurs while using the USB host to connect to a USB sound card and exercising alsa (aplay) to play a wav file. In the EVM board we see a hang while on DVR board same sequence of steps gives a kernel crash. If we disable USB DMA mode this problem does not occur.

The sequence of steps to reproduce the problems is as follows:

1. Compile the DM365 linux kernel with default davinci_dm365_defconfig 2. Edit .config to enable CONFIG_SND_USB_AUDIO (uncomment and set it to

CONFIG_SNG_USB_AUDIO=y)

3. Run 'make oldconfig'

4. Compile the kernel again.

5. Boot the board with built kernel

6. Connect a usb sound card to the board 7. Run 'aplay -D hw:1,0 test.wav' [48KHz, 192kbps file, 16 bit stereo wav file]

8. Ctrl-C to abort aplay before the playback finishes

9. Run aplay again. aplay hangs here and does not produce any sound.

After some time (few mins) following log is seen

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

BUG: time warp detected!

prev > now, 000000f226b46481 > 0000003f29dd347d:

= 768746139652 delta, on CPU#0

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

10. In DVR similar sequence gives a kernel crash.

Problem2 : USB reset occurs while using aplay is used in PIO mode [ seen in DVR & EVK ]

In order to work around the problem, we used USB in PIO mode. To enable PIO mode we enabled CONFIG_MUSB_PIO_ONLY in .config. On enabling PIO we don't see hang/crash as above.

In PIO mode we see another problem. We have not seen this problem with aplay but with our own application based on libasound (alsa library).

This application records data from the usb sound card and plays out the data on the same usb sound card (loopback).

The problem happens once in few 10s of runs, on starting the application we see the following log ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

musb_h_tx_flush_fifo 124: Could not flush host TX fifo: csr: 2003 musb_h_tx_flush_fifo 124: Could not flush host TX fifo: csr: 2003 musb_h_tx_flush_fifo 124: Could not flush host TX fifo: csr: 2003 musb_h_tx_flush_fifo 124: Could not flush host TX fifo: csr: 000a musb_h_ep0_irq 1221: no URB for end 0 hub 1-1:1.0: port 3 disabled by hub (EMI?), re-enabling...

usb 1-1.3: USB disconnect, address 3

root@10.0.0.245:~#

usb 1-1.3: new full speed USB device using musb_hdrc and address 5 usb 1-1.3: configuration #1 chosen from 1 choice ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Workaround : To recover from the error, just close and open the audio device. USB audio starts working.

Problem3 : USB audio with USB storage both in PIO mode and DMA mode give I/O errors in DVR and enumeration and I/O errors in EVM.

Connect USB sound card with line-in and line-out. Connect USB hard drive. Now, if USB audio ( aplay + arecord) is run along with USB hard disk read or write application, USB I/O errors and reset happens.

===================================================================

Please let me know if anybody has seen similar problems and have workarounds, suggestions.

Thanks

George

Compiling UBL Code

NeeravPatel — Wed, 01 Apr 2009 18:57:43 GMT

Hi,

I have been looking at the Serial Utility that TI recommends to download the UBL to the chip. I see that there is UBL Code present and I have been looking into it, but how does one compile all this code to the bin file that we send via the UART.

Thanks

How to fit a real-time H.264 video bytesstream to Dmai Vdec2 for Video Decoding?

Chitat — Fri, 20 Nov 2009 04:10:04 GMT

Hi all,

We are right now trying to decode a H.264 video stream from a H.264 camera in the DM365 EVM. We'd like to use Dmai Vdec2 api to decode the video stream.

However, we went through the source code of the linux dvsdk demo, decode and encodedecode but we can't find ways to fit a real-time H.264 video stream, which is not a video file and is generated from the H.264 camera, to Dmai Vdec2 api.

Could anybody tell me which bitstream formats, NAL unit stream format or byte stream format, can be accepted? How should we divide the bitstream into a small chunks and put chunks in InBuf for vdec2_process() api?

Where can we get more information?

Thank you so much!

Best Regards,

Chitat

DM355: Unable to setup NFS server

Jatin Pasrija — Mon, 26 Oct 2009 12:16:29 GMT

I am unable to connevt DM355 board via NFS. Here is the printenv output:

DM355 EVM # printenv
bootdelay=3
baudrate=115200
=nfshost 127.0.0.1
rootpath=/home/dhd/workdir/filesys,nolock mem=116M
bootcmd=nboot 0x80700000 0 0x400000;bootm
netmask=255.255.0.0
gateway=10.20.1.1
dns1=10.20.1.1
dns2=10.20.1.2
bootfile="uImage"
nfshost=10.20.21.12
ipaddr=10.20.21.15
bootargs=console=ttyS0,115200n8 noinitrd rw ip=10.20.21.15:10.20.21.12:10.20.1.1:255.255.0.0:::off root=/dev/nfs nfsroot=10.20.21.12:/home/dhd/workdir/filesc
stdin=serial
stdout=serial
stderr=serial
videostd=ntsc

While boot it gives the following error:

eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
portmap: server 10.20.21.12 not responding, timed out
Root-NFS: Unable to get nfsd port number from server, using default
Looking up port of RPC 100005/1 on 10.20.21.12

I have reset the NFS server on the host several times, but it did not help

PS: Is the garbage value =nfshost 127.0.0.1 the reason, how can I remove it?

Kindly Help.

Thanks

Arm load is nearly 80% and can't achieve real-time when encode the video

weidong shi — Fri, 13 Nov 2009 04:02:26 GMT

Hi, I want to write some message to video stream.

So I do this completion after get capture frames as follows:

if (Capture_get(hCapture, &hCapBuf) < 0)

{

ERR("Failed to get capture buffer\n");

cleanup(THREAD_FAILURE);

}

BufferGfx_setColorSpace(hCapBuf,ColorSpace_YUV422PSEMI);

//modify by su 2009 09 28

Text_showUnicode(Font, envp->osd_args->title, FONT_SIZE, envp->osd_args->title_x,

yScale(envp->videoStd, envp->osd_args->title_y), hCapBuf);

getDate(envp->osd_args->date);

Text_showUnicode(Font, envp->osd_args->date, FONT_SIZE, envp->osd_args->date_x,

yScale(envp->videoStd, envp->osd_args->date_y), hCapBuf);

BufferGfx_setColorSpace(hCapBuf,ColorSpace_YUV420PSEMI);

-----------------------------------------------------------------------------------------------------------------------------

The encode can't achieve real time (25f/s).If I want to make it achieve real time,what should I do?

Could you give me some advice?

Thank you.

DM365 programming of ubl, uboot via serial loader utility fails

Geo Varghese — Thu, 19 Nov 2009 10:57:42 GMT

Hi, I am trying to load the ubl and uboot to nand flash in dm365 board using the "serial flash host " application (sfh_DM36x.exe) provided by TI. The dm365 is strapped to work in uart boot mode and I am getting BOOTME messages on the console. I am giving the following command from linux machine:

[geo@geo-laptop GNU]$ ./sfh_DM36x.exe -nanderase

The UART0 of dm365 board is connected to COM1 port of PC. The serial flash loader application is executing upto the stage where it is trying to send the UBL to the DM365. After that the application is hang. I am attaching the log message below:

***************************************************************************************************************

-----------------------------------------------------

TI Serial Flasher Host Program for DM36x

Ver. 1.13

-----------------------------------------------------

Platform is Unix/Linux.

Globally erasing NAND flash.

Attempting to connect to device /dev/ttyS0...

Press any key to end this program at any time.

Waiting for the DM36x...

BOOTME commmand received.

Returning ACK and header...

ACK command sent.

Waiting for BEGIN command...

Target: BEGIN

BEGIN commmand received.

Sending CRC table... 100% [ ]

CRC table sent....

Waiting for DONE... DONE received.

Sending the UBL...

15% [ --------------------------------------------------- ]

Sending UBL...

After 15% of sending it is hanging

***************************************************************************************************************

Does anyone have the same problem as me? Please help

Thanks in Advance

Geo Varghese

bt656 input with external sync?

chrisw957 — Thu, 19 Nov 2009 03:08:28 GMT

Does the dm355 support 8-bit ITU−R BT.601 NTSC/PAL with external sync? I know it supports embedded sync, but I'm not sure if it can use external.

Thanks.

DM365 Auto Focus Support

Greg Lytle — Wed, 18 Nov 2009 21:45:20 GMT

Is there any TI or 3rd party reference implementation or IP for Auto Focus suppor on the DM365 that leverage the Hardware H3A module and latest LSP 2.10 drivers?

Clock coupling between video and audio??

Tom Hanson — Mon, 16 Nov 2009 16:51:20 GMT

I don't really think that the video and audio clocks are coupled, but that's how its acting.

If I run PCM audio, without video, at 48kHz sampling, with blocking reads of 1024 samples, the data is read at 48,000 samples/sec

If I run the same exact configuration while running video (EDIT: H.264 ONLY! MPEG4 has no impact on audio.) in parallel, the audio data is read at approx 47,880 samples/sec.

This is very consistent and repeatable. It also shows up at 8Khz sampling.

Has anyone seen this? Any suggestions where to look?

Thanks!

XDC: How to select single codec from different package?

Tom Hanson — Wed, 18 Nov 2009 18:33:21 GMT

I need to pull all codecs but one from a first package (i.e. dvsdk_2_10_01_18/dm365_codecs_01_00_06/packages) and then pull one codec from another package (i.e. dvsdk_2_10_00_13/dm365_codecs_01_00_03/packages).

XDC doesn't seem to be able to do this. Since it uses the path name from "packages" on down to identify the codec, I'm not able to select anything finer grained/lower level than the "packages" directory. Unfortunately this means that all codecs get pulled from the first such directory that XDC finds.

Is there any way to achieve this goal? It's critical because I need to work around an apparent bug in one of the newer codecs.

Thanks!

davinci_vpfe, module remains in use if channel initialization fails (probable BUG)

Marco Braga — Wed, 18 Nov 2009 10:05:50 GMT

Hi,

still not sure if this is the right place to signal bugs (if not please redirect me to the correct section), but I've found this in davinci_vpfe. When the v4l driver is opened, it calls "vpfe_initalize_channel". In turn this calls dec->initialize that is the specific decoder initialization. In most implementations (such as tvp514x) this issues a try_module_get that increments usage count of the module.

Now vpfe_initalize_channel calls "dec->std_ops->getstd", "vpfe_get_std_info", "vpfe_get_std_info". If one of these calls fails, channel->initialized remains 0 and the same happens for fh->initialized.

Then even if the file descriptor is closed, since fh->initialized is 0, dec->deinitialize is never called (even if the decoder has been initialized correctly).

The result is that module_put present in the decoder driver is never called, usage count of the module remains 1 and there is no way to remove the module.

My suggestion is to modify davinci_vpfe to better handle this situation: if something fails, it must call "dec->deinitialize" before exiting.

DM365 capture interlaced video from CCD without embedded sync

Juraj — Thu, 12 Nov 2009 14:26:26 GMT

I'm trying to start capture of interlaced (1080i) input video signal on EVM DM365 connected on the CCD port. Signal is synchronized using CCD-FIELD signal routed to C_WE_FIELD pin, VDIN_HD, VDIN_VD.

It works.

Office Hours for Getting Hands-On: Linux GDB debugger on TI's OMAP/DaVinci platforms

Bernie Thompson — Tue, 17 Nov 2009 18:54:40 GMT

Those DM3xx users whom are here for office hours for Getting Hands-On: Linux GDB debugger on TI's OMAP/DaVinci platforms please feel free to join the IRC channel #etechdays on Freenode. Juan and I will be in there until 2pm central to help out with any questions in real time. Any good q&a that happens there will be posted back to the forums.

step 1: go to http://webchat.freenode.net/?channels=etechdays
step 2: put in a Nickname you wish to be known as, try something obscure to ensure you do not conflict with another user on Freenode
step 3: click connect

If all goes well and your browser has the proper java support you should be in the etechdays room on freenode, just type in the box at the bottom to put in text, note this is the same service used by various open projects such as Beagle.

Error in Sound_alsa_read?

Tom Hanson — Tue, 17 Nov 2009 17:42:29 GMT

Sound_alsa_read determines the number of samples to read via:

readSamples = Buffer_getNumBytesUsed(hBuf) / (2 * hSound->channels);

Problem is, if the buffer hasn't been used yet, Buffer_getNumBytesUsed() returns zero. This causes the following loop to not be entered (no data is read) but then the code does:

Buffer_setNumBytesUsed(hBuf, Buffer_getSize(hBuf));
return Dmai_EOK;

returning an un-initialized buffer and a success code.

It looks like the first line of code, above, should read:

readSamples = Buffer_getSize(hBuf) / (2 * hSound->channels);

Yes? No?

how can I get 2592x1944 JPG by using DM355IPNC-MT5?

cooper — Tue, 17 Nov 2009 06:37:27 GMT

hi all

now i can get a jpg image from DM355IPNC,but its size is 640x352.

what i changed is here:

static int jpegVideoBuffer(IMGENC1_Handle hEncode, char *inBuf, int inSize,
                             char *outBuf, int *outBufSize, int *frametype, int width,
                             int height)
{
    XDM1_BufDesc            inBufDesc;
    XDM1_BufDesc            outBufDesc;
    Int32                      status;

    IMGENC1_InArgs          inArgs;
    IMGENC1_OutArgs         outArgs;

    inBufDesc.numBufs           = 1;
    inBufDesc.descs[0].bufSize     = inSize;
    inBufDesc.descs[0].buf         = inBuf;

    outBufDesc.numBufs          = 1;
    outBufDesc.descs[0].bufSize = D1_FRAME_SIZE;
    outBufDesc.descs[0].buf        = outBuf;

    inArgs.size                 = sizeof(IMGENC1_InArgs);
    outArgs.size                = sizeof(IMGENC1_OutArgs);

    /* perform the image (JPEG) encoding */
    status = IMGENC1_process(hEncode, &inBufDesc, &outBufDesc, &inArgs,
                            &outArgs);

    if (status != IMGENC1_EOK) {
        ERR("Encoder process returned fail!! \n");
        return FAILURE;
    }

    *outBufSize = outArgs.bytesGenerated;
    *frametype     = 1;
////////////////////////////////////////////////add here//////////////////////////////////////////////
    if(sig_usr2 == 1)
    {
        time_t zeit;
        char strzeit[256];
        struct tm *zeitinfo;
        setlocale(LC_ALL, "");
        time(&zeit);
        zeitinfo = localtime(&zeit);
        strftime(strzeit, 255, "%Y%m%d_%R:%S", zeitinfo);

        char dateiname[40];
        strcpy(dateiname,"usb");
        strcat(dateiname,strzeit);
        strcat(dateiname,".jpg");
        FILE *filestream = NULL;

        filestream = fopen(dateiname, "w");
        fwrite(outBuf, 1, outArgs.bytesGenerated, filestream);
        fclose(filestream);
        printf("Schreibe Datei: %s\n", dateiname);

    }
////////////////////////////////////////////////add end//////////////////////////////////////////////
    sig_usr2 = 0;
    return SUCCESS;
}

but i want get 2592x1944 or 1280x960 jpg image,what should i do?

DM365 display problem ---with offset

Eric Hou — Fri, 06 Nov 2009 09:26:48 GMT

hi, everyone:

I'm useing an Appro DM365 IPNC to display the demo source "davincieffect.mpeg4" in 1280x720, and got an stream with offset, show as follow:

you can see the color line on the top and left of the picture, and I can only display the picture without the top and left on TV with YPbPr, you know in YUV420PSEMI, V4L2 and I have followed the souce code, haven't find any offset set to display params, so, I confused, some meet this before and how could it be? you should know that we use dvsdk_2_10_01_18, any suggest will be appreciate.

Some question aboout PRTCSS of DM365

Jack — Mon, 16 Nov 2009 03:08:28 GMT

I have read the user's guides about the PRTCSS part , then I have a question , Can I use the pins of the PWCTRO0-3 and PWCTRIO0-6 for interrupt or other use ? I am not use the RTC of the DM365.

And , I found the pin was connected to the CPLD in the DM365 EVEM , but I can't find the program about the PWCTRIO0-6 in the CPLD's program , so I want to know , how does the pins work in the DM365 EVEM?