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About SDMA transfer from memory to ESAI in i.MX6DQ.

Question asked by Keita Nagashima on Jan 6, 2016
Latest reply on Jan 20, 2016 by Yuri Muhin

Dear All,

 

Hello. We would like to transfer the data from memory to ESAI_TX_FIFO via SDMA.

 

Q1.

There are two kinds of scripts of SDMA for the peripheral sending.

"mcu_2_shp" and "mcu_2_app"

Should I use mcu_2_shp?

 

Q2.

In the case to send 256 bytes data from memory to ESAI_TX_FIFO by script (mcu_2_shp);

The CHNERRn bits of the SDMAARM_EVTERR register is set and the SDMA interrupt sometimes inputs.

Is there a way of CHNERR's that it isn't set?

 

Q3.

When CHNERRn is set, are there bad effect such as the data drop out?

(May I mask the interrupt by the HIMASK bit?)

 

Best Regards,

Keita

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