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Example 2: Noncontinuous Frame Display for 525/60 Format
/* Configure EDMA parameters
EDMA_configArgs(
*edmaHandle,
EDMA_OPT_RMK(
EDMA_OPT_PRI_MEDIUM,
EDMA_OPT_ESIZE_32BIT,
EDMA_OPT_2DS_YES,
EDMA_OPT_SUM_INC,
EDMA_OPT_2DD_NO,
EDMA_OPT_DUM_NONE,
EDMA_OPT_TCINT_YES,
EDMA_OPT_TCC_OF(tcc & 0xF),
EDMA_OPT_TCCM_OF(((tcc & 0x30) >> 4)),
EDMA_OPT_ATCINT_NO,
EDMA_OPT_ATCC_OF(0),
EDMA_OPT_PDTS_DISABLE, /* disable PDT(peripheral device
EDMA_OPT_PDTD_DISABLE, /* disable PDT mode for dest
EDMA_OPT_LINK_NO,
EDMA_OPT_FS_NO
),
EDMA_SRC_RMK(srcAddr),
EDMA_CNT_RMK(EDMA_CNT_FRMCNT_OF((frameCount – 1)),
EDMA_DST_RMK(dstAddr),
EDMA_IDX_RMK(EDMA_IDX_FRMIDX_OF((elementCount * 4)),
EDMA_IDX_ELEIDX_OF(0)),
/* no RLD in 2D and no linking
EDMA_RLD_RMK(EDMA_RLD_ELERLD_OF(0), EDMA_RLD_LINK_OF(0))
);
*tccNum = tcc;
}
A-20
Video Port Configuration Examples
/* medium priority
/* Element size 32 bits
/* 2–dimensional source
/* source address auto increment
/* 1–dimensional destination(FIFO) */
/* fixed dest address mode(FIFO)
/* Enable transfer complete
/* indication
/* Disable Alternate Transfer
/* Complete Interrupt
/* transfer) mode for source
/* Disable linking
/* Array synchronization
EDMA_CNT_ELECNT_OF(elementCount)),
/* note: 32–bit element size
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
SPRU629
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