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STM32F7XX/F4XX - How to play a Wave sound backwards (Reverse playback) ?

DB..1
Associate II

‎2021-07-26 08:42 AM

I have an STM32F7 Discovery card and I would like to know how to read a Wave sound backwards (reverse playback) via SAI and I2S interfaces ?

I can play a Wave sound forward and change its speed with the library and documentation provided by ST.

Thank you for your help.

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DB..1
Associate II

‎2021-07-27 11:48 PM

This is the principle of double buffering with circular DMA.

This is what I am currently using.

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