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STM32Fy46G-DISCO SAI with DMA

Question asked by hayaya.hayaya on May 29, 2016
hello.

I make audio player on STM32F7-DISOC. I want to use SAI with DMA transfer. Using STM32CubeMX and stm32746g_discovery_audio.c of STM#2CubeF7 and reffeing to
Audio_playback_and_record project.
SAI and DMA setting is same as stm32746g_discovery_audio.c.

I set audio data to DMA 1152 half words and in BSP_AUDIO_OUT_Play() function. 1st time, I get half transfer interrupt. then, no interrupt is followed by the 1st interrupt.

I tried CubeMX1.14.0 with Firmware1.3.1 and CubeMX1.15.0 with Firmware1.4.0. But the situation is same.

Why cannot I get the 2nd or 3rd....interrupt?

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