• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 101 subscribers
  • Views 236 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

EDMA configuration in mcaspPlayBk from StarterWare-L138

yl
Expert 1215 points

Hi,

I noticed in the mcaspPlayBk example from StarterWare-L138, the EDMA3CCPaRAMEntry is configured like this

However, according the the TRM page 619, SAM/DAM is not supported in L138. Does the code work as intended at all?

  • Note: The constant addressing (CONST) mode has limited applicability. The EDMA3 should be configured for the constant addressing mode (SAM/DAM = 1) only if the transfer source or destination (on-chip memory, off-chip memory controllers, slave peripherals) support the constant addressing mode. On the C674x/OMAP-L1x processors, no peripherals, memory, or memory controller support constant addressing mode. If the constant addressing mode is not supported, the similar logical transfer can be achieved using the increment (INCR) mode (SAM/DAM = 0) by appropriately programming the count and indices values.
Thanks