Texas Instruments TMS320C64x DSP - Manual (Page 290)

Example 2: Noncontinuous Frame Display for 525/60 Format
Video Port Configuration Examples A-14 SPRU629
/*–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
/* Function : bt656_8bit_ncfd */
/* Input(s) : portNumber, video port number i.e. 0, 1 or 2. */
/* Description : Configures given video port for 8–bit BT.656 non– */
/* continuous frame display. */
/*–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
void bt656_8bit_ncfd(int portNumber)
{
/* Open video port for display */
vpDisplayHandle = VP_open(portNumber, VP_OPEN_RESET);
if(vpDisplayHandle == INV)
test_exit(FAIL);
/* Enable video port functionality in VP Peripheral */
/* Control Reg(PCR) */
VP_FSETH(vpDisplayHandle , PCR, PEREN, VP_PCR_PEREN_ENABLE);
/* Set this port to display mode */
VP_FSETH(vpDisplayHandle , VPCTL, DISP, VP_VPCTL_DISP_DISPLAY);
/* ––––––––––––––––––––– */
/* Enable all interrupts */
/* ––––––––––––––––––––– */
/* enable display complete interrupt */
VP_FSETH(vpDisplayHandle , VPIE, DCMP, VP_VPIE_DCMP_ENABLE);
/* enable display underrun interrupt */
VP_FSETH(vpDisplayHandle , VPIE, DUND, VP_VPIE_DUND_ENABLE);
/* enable video port global interrupt enable */
VP_FSETH(vpDisplayHandle , VPIE, VIE, VP_VPIE_VIE_ENABLE);
/* –––––––––––––––––––– */
/* Set all other fields */
/* –––––––––––––––––––– */
/* set frame size */
VP_RSETH(vpDisplayHandle , VDFRMSZ,
VP_VDFRMSZ_RMK(VD_FRM_HEIGHT, VD_FRM_WIDTH));
/* set horizontal blanking */
VP_RSETH(vpDisplayHandle , VDHBLNK,
VP_VDHBLNK_RMK(VD_HBLNK_STOP, VP_VDHBLNK_HBDLA_NONE,
VD_HBLNK_START));
/* set vertical blanking start for field1 */
VP_RSETH(vpDisplayHandle , VDVBLKS1,
VP_VDVBLKS1_RMK(VD_VBLNK_YSTART1,VD_VBLNK_XSTART1));
/* set vertical blanking end for field1 */
VP_RSETH(vpDisplayHandle , VDVBLKE1,
VP_VDVBLKE1_RMK(VD_VBLNK_YSTOP1, VD_VBLNK_XSTOP1));