MT9V136 videostream (imager) capturing problem.

sinomatic

Hi.

I am trying to capture a composite video signal from MT9V136 camera (imager output) using the modified demo application "encode " from DVSDK, running on DM36x EVM board. Unfortunately, the capture of the stream does not happen - the capture thread (captureThrFxn) is stoped in the Capture_get () function - videobuf_waiton() function calls the scheduler in line:

if (vb->state == STATE_ACTIVE || vb->state == STATE_QUEUED)
{
schedule();
}

I am out of ideas how to debug it, please, give me some idea!

Thank you & Best Regards,

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

P.S. My setup is:

Linux kernel version is 2.6.18, DVSDK version is 2.10.00.17

MT9V136 video outputs are connected to dm365 Y[7..0] inputs

MT9V136 video outputs measurement (oscilloscope):

PIXCLK 27 MHz
HSYNC 25 Hz
VSYNC 15.6 KHz

Lines Y0..Y7 have random signal.

DM365 registers value:

DM365_CPLD_REGISTER3 0x42 (IMAGER)
MODESET     0x00002004
REC656IF     0x00000003
CCDCFG       0x00000812
PINMUX0       0x00FD0000

over 14 years ago

0 Nagabhushana over 14 years ago

TI__Expert 4685 points

can you pl dump all register contents of ISIF(CCDC)?

0 sinomatic over 14 years ago in reply to Nagabhushana

Prodigy 140 points

Thank you!.

There is the dump:

SYNCEN      0x00000000
MODESET     0x00002004
HDW         0x00000000
VDW         0x00000000
PPLN        0x00000000
LPFR        0x00000000
SPH         0x00000000
LNH         0x000004FF
SLV0        0x00000001
SLV1        0x00000001
LNV         0x000001DF
CULH        0x0000FFFF
CULV        0x000000FF
HSIZE       0x00000028
SDOFST      0x00000000
CADU        0x00000000
CADL        0x00000000
CCOLP       0x00000000
CRGAIN      0x00000200
CGRGAIN     0x00000200
CGBGAIN     0x00000200
CBGAIN      0x00000200
COFSTA      0x00000000
FLSHCFG0    0x00000000
FLSHCFG1    0x00000000
FLSHCFG2    0x00000000
VDINT0      0x000001DF
VDINT1      0x000000F1
VDINT2      0x00000000
CGAMMAWD    0x00000000
REC656IF    0x00000003
CCDCFG      0x00000812
DFCCTL      0x00000000
VDFSATLV    0x00000000
DFCMEMCTL   0x00000000
DFCMEM0     0x00000000
DFCMEM1     0x00000000
DFCMEM2     0x00000000
DFCMEM3     0x00000000
DFCMEM4     0x00000000
CLAMPCFG    0x00000000
CLDCOFST    0x00000000
CLSV        0x00000000
CLHWIN0     0x00000000
CLHWIN1     0x00000000
CLHWIN2     0x00000000
CLVRV       0x00000000
CLVWIN0     0x00000000
CLVWIN1     0x00000000
CLVWIN2     0x00000000
CLVWIN3     0x00000000
FMTSPH      0x00000000
FMTLNH      0x00000000
FMTSLV      0x00000000
FMTLNV      0x00000000
FMTRLEN     0x00000000
FMTHCNT     0x00000000
CSCCTL      0x00000000
CSCM0       0x00000000
CSCM1       0x00000000
CSCM2       0x00000000
CSCM3       0x00000000
CSCM4       0x00000000
CSCM5       0x00000000
CSCM6       0x00000000
CSCM7       0x00000000

0 Nagabhushana over 14 years ago in reply to sinomatic

TI__Expert 4685 points

What does sensor is configured to output? NTSC? PAL? VIDINT register setting look wrong to me. For NTSC, line number should not exceed (480)/2 - 1 and for PAL, (576/2) -1. Pl refer to section 5.4.3.1 of VPFE user guide.

VDINT0 0x000001DF
VDINT1 0x000000F1