Hi,
For video application samples can you suggest me how to run a sample video code, I have a sample application for "video loopback" (file attached )which was given along with the spectrum Digital Davinci EVM6446 (EVM) demo board, I am trying to run this code but I get a jumping video output ( of camera capture)at the TV.
My set Up : A CCTV camera(PAL standard) output is connected to s-video input port of the EVM, Composite video output of the EVM is connected to composite input of the TV. also same setup, but EVM input is at the the composite port we are getting a blank screen (no video seen)(block diagram attached).
CCS : Code Composer Studio 5.5.0 (for Windows XP PC)
Emulator: spectrum Digital XDS560v2 LC traveler Emulator
Please suggest me how to execute and get the loop-back video correctly or please suggest execution of any sample application/ example of video application.
/*
* Copyright 2005 by Spectrum Digital Incorporated.
* All rights reserved. Property of Spectrum Digital Incorporated.
*
* Not for distribution.
*/
/*
* Video Loopback Test
*
*/
#include "stdio.h"
#include "davincievm.h"
/* ------------------------------------------------------------------------ *
* *
* Testing Function *
* *
* ------------------------------------------------------------------------ */
void TEST_execute( Int16 ( *funchandle )( ), char *testname, Int16 ledmask )
{
Int16 status;
/* Display test ID */
printf( "%02d Testing %s...\n", ledmask, testname );
/* Call test function */
status = funchandle( );
/* Check for test fail */
if ( status != 0 )
{
/* Print error message */
printf( " FAIL... error code %d... quitting\n", status, testname );
/* Software Breakpoint to Code Composer */
SW_BREAKPOINT;
}
else
{
/* Print error message */
printf( " PASS\n", testname );
}
}
extern Int16 video_loopback_test();
/* ------------------------------------------------------------------------ *
* *
* main( ) *
* *
* ------------------------------------------------------------------------ */
void main( void )
{
/* Initialize BSL */
DAVINCIEVM_init( );
TEST_execute( video_loopback_test, "Video Loopback", 1 );
printf( "\n***ALL Tests Passed***\n" );
SW_BREAKPOINT;
}
/*
* Copyright 2005 by Spectrum Digital Incorporated.
* All rights reserved. Property of Spectrum Digital Incorporated.
*
* Not for distribution.
*/
/*
* Video Loopback Test
*
*/
#include "davincievm_i2c.h"
#define TVP5146_I2C_ADDR 0x5D
/* ------------------------------------------------------------------------ *
* *
* tvp5146_rset *
* *
* Set codec register regnum to value regval *
* *
* ------------------------------------------------------------------------ */
void tvp5146_rset( Uint8 regnum, Uint8 regval )
{
Uint8 cmd[2];
cmd[0] = regnum; // 8-bit Register Address
cmd[1] = regval; // 8-bit Register Data
DAVINCIEVM_I2C_write( TVP5146_I2C_ADDR, cmd, 2 );
}
/* ------------------------------------------------------------------------ *
* *
* tvp5146_rget *
* *
* Return value of codec register regnum *
* *
* ------------------------------------------------------------------------ */
Uint8 tvp5146_rget( Uint8 regnum )
{
Uint8 cmd[2];
cmd[0] = regnum; // 8-bit Register Address
cmd[1] = 0; // 8-bit Register Data
DAVINCIEVM_I2C_write( TVP5146_I2C_ADDR, cmd, 1 );
DAVINCIEVM_I2C_read ( TVP5146_I2C_ADDR, cmd, 1 );
return cmd[0];
}
/* ------------------------------------------------------------------------ *
* *
* tvp5146_init( ) *
* *
* Initialize the TVP5146 *
* *
* ------------------------------------------------------------------------ */
void tvp5146_init( )
{
DAVINCIEVM_waitusec( 1000 ); // wait 1 msec
tvp5146_rset( 0xE8, 0x02 ); // Initalize TVP5146, must do after power on
tvp5146_rset( 0xE9, 0x00 );
tvp5146_rset( 0xEA, 0x80 );
tvp5146_rset( 0xE0, 0x01 );
tvp5146_rset( 0xE8, 0x60 );
tvp5146_rset( 0xE9, 0x00 );
tvp5146_rset( 0xEA, 0xB0 );
tvp5146_rset( 0xE0, 0x01 );
tvp5146_rset( 0xE0, 0x00 );
DAVINCIEVM_waitusec( 1000 ); // wait 1 msec
//tvp5146_rset( 0x00, 0x05 ); // Input Video: CVBS : VI_2_B
tvp5146_rset( 0x00, 0x46 ); // Input Video: S-video: VI_2_C(Y) VI_1_C(C)
tvp5146_rset( 0x02, 0x01 ); // NTSC
tvp5146_rset( 0x34, 0x11 ); // Enabling clock & Y/CB/CR input format
DAVINCIEVM_waitusec( 1000 ); // wait 1 msec
}
#define NTSC 1
#if NTSC
#define BASEP_X 0x7A // 122
#define BASEP_Y 0x12 // 18
#elif PAL
#define BASEP_X 0x84 // 132
#define BASEP_Y 0x16 // 22
#endif
/* ------------------------------------------------------------------------ *
* *
* vpfe_init( ) *
* *
* NTSC: *
* Width: 720 *
* Height: 480 *
* *
* *
* ------------------------------------------------------------------------ */
void vpfe_init( Uint32 buffer, Uint32 width, Uint32 height )
{
VPFE_SYN_MODE = 0x00032F84; // interlaced, with VD pority as negative
VPFE_HD_VD_WID = 0;
VPFE_PIX_LINES = 0x02CF020D;
/*
* sph = 1, nph = 1440, according to page 32-33 of the CCDC spec
* for BT.656 mode, this setting captures only the 720x480 of the
* active NTSV video window
*/
VPFE_HORZ_INFO = width << 1; // Horizontal lines
VPFE_HSIZE_OFF = width << 1; // Horizontal line offset
VPFE_VERT_START = 0; // Vertical start line
VPFE_VERT_LINES = height >> 1; // Vertical lines
VPFE_CULLING = 0xFFFF00FF; // Disable cullng
/*
* Interleave the two fields
*/
VPFE_SDOFST = 0x00000249;
VPFE_SDR_ADDR = buffer;
VPFE_CLAMP = 0;
VPFE_DCSUB = 0;
VPFE_COLPTN = 0xEE44EE44;
VPFE_BLKCMP = 0;
VPFE_FPC_ADDR = 0x86800000;
VPFE_FPC = 0;
VPFE_VDINT = 0;
VPFE_ALAW = 0;
VPFE_REC656IF = 0x00000003;
/*
* Input format is Cb:Y:Cr:Y, w/ Y in odd-pixel position
*/
VPFE_CCDCFG = 0x00000800;
VPFE_FMTCFG = 0;
VPFE_FMT_HORZ = 0x000002D0;
VPFE_FMT_VERT = 0x0000020E;
VPFE_FMT_ADDR0 = 0;
VPFE_FMT_ADDR1 = 0;
VPFE_FMT_ADDR2 = 0;
VPFE_FMT_ADDR3 = 0;
VPFE_FMT_ADDR4 = 0;
VPFE_FMT_ADDR5 = 0;
VPFE_FMT_ADDR6 = 0;
VPFE_FMT_ADDR7 = 0;
VPFE_PRGEVEN_0 = 0;
VPFE_PRGEVEN_1 = 0;
VPFE_PRGODD_0 = 0;
VPFE_PRGODD_1 = 0;
VPFE_VP_OUT = 0x041A2D00;
VPFE_PCR = 0x00000001; // Enable CCDC
}
/* ------------------------------------------------------------------------ *
* *
* vpbe_init( ) *
* *
* NTSC: *
* Width: 720 *
* Height: 480 *
* *
* *
* ------------------------------------------------------------------------ */
void vpbe_init( Uint32 buffer, Uint32 width, Uint32 height, Uint32 cb_enable )
{
/*
* Setup VPBE
*/
VPSS_CLK_CTRL = 0x00000018; // Enable DAC and VENC clock, both at 27 MHz
VPBE_PCR = 0; // No clock div, clock enable
/*
* Setup OSD
*/
OSD_MODE = 0x000000fc; // Blackground color blue using clut in ROM0
OSD_OSDWIN0MD = 0; // Disable both osd windows and cursor window
OSD_OSDWIN1MD = 0;
OSD_RECTCUR = 0;
OSD_VIDWIN0OFST = width >> 4;
OSD_VIDWIN0ADR = buffer;
OSD_BASEPX = BASEP_X;
OSD_BASEPY = BASEP_Y;
OSD_VIDWIN0XP = 0;
OSD_VIDWIN0YP = 0;
OSD_VIDWIN0XL = width;
OSD_VIDWIN0YL = height >> 1;
OSD_MISCCTL = 0;
OSD_VIDWINMD = 0x00000003; // Disable vwindow 1 and enable vwindow 0
// Frame mode with no up-scaling
/*
* Setup VENC
*/
VENC_VMOD = 0x00000003; // Standard NTSC interlaced output
VENC_VDPRO = cb_enable << 8;
VENC_DACTST = 0;
VENC_DACSEL = 0x00004210;
}
/* ------------------------------------------------------------------------ *
* *
* video_loopback_test( ) *
* *
* *
* *
* ------------------------------------------------------------------------ */
Int16 video_loopback_test( )
{
tvp5146_init( );
vpfe_init( 0x81000000, 720, 480 ); // Setup Front-End
vpbe_init( 0x81000000, 720, 480, 0 ); // Setup Back-End
return 0;
}
