Hi Mukul, Thanks for your message! This is where some times the Linux drivers are more robust because they are "community" tested across several platforms and several users. I am assuming your application is purely running on RTOS for both ARM and DSP side? Yes, My application running purely on RTOS ARM. On the DSP I'm not using RTOS. I have only one card which works well. But I have two the same cards and one of them not works fine. I noticed that for each cards the "hang problem" occured always at the same point (for example: first cards while writting 524288B other while reading XXX B) but each card has a different weak point. List of my cards: Regards, Patryk
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