edma error

Ahmed ibrahim

hi dear E2E;

i am developing project that use edma to transmit data from mcasp to certain memory

i face a problem from a moth ago and till now i cant solve
problem is EDMA get first sample data from mcasp and next samples is similar to it even if i change input

7658.lld_v5.rar

i use edma lld V 2.11.6

SYS/BIOS v6.33.5.46

XDAIS v7.21.1.7

over 12 years ago

0 Radhesh Bhat over 12 years ago

Genius 4590 points

Hi,

Can you describe your problem with more details?

0 Ahmed ibrahim over 12 years ago in reply to Radhesh Bhat

Intellectual 320 points

output doesnt change with change in input
taken in Consideration this project using a ping pong EDMA echo audio

0 Ahmed ibrahim over 12 years ago in reply to Radhesh Bhat

Intellectual 320 points

Radhesh Bhat said:

Hi,

Can you describe your problem with more details?

hi,

as i say before this project is a trial project to ensure that MCASP and EDMA is correctly configured and work to use it in anthor project

i configure EDMA to get data from MCASP ,now i finish configurtion and it work but not fully correctly edma fill memory with first edma transfer gat data correctly as i input "i input sine wave " and concequtive EDMA transfer is the duplication of the first data

take in consider;

i not use AFIFO in mcasp and take data from Confegure BUS

use ping pong in edma

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edma error