Hi,
I have some questions about the example A: Convert Image From YUV422 Format to YUV420 Format, in the application report SPRAAN4a, How to Use the EDMA3 Driver on a TMS320DM643x Device:
1. Why is a callback function needed to manually trigger every 2D transfer? Is it possible to automatically re-trigger via a self-chained channel?
2. If so, how should the registers be configured?
3. I tried setting OPT to 0x80D20004 (ITCCHEN=1, TCCHEN=1, ITCINTEN=0, TCINTEN=1, TCC=32, TCCMODE=0, STATIC=0, SYNCDIM=AB); other registers (A_B_CNT, SRC_DST_BIDX, etc) were set as suggested in SPRAAN4a. I used channel 32, and manually triggered the 1st transfer to setting bit 32 of both EESR and ESR to 1. However, I didn't get the expected video in. What else am I possibly missing?
Thanks,
