About sweera

sweera · 2024-02-07

In the STM32H7 ref manual (RM0433 - Section 51.4.4), the following is said about configuring an SAI block in synchronous mode with the other SAI block in the same SAI peripheralI'm confused about the following statements:Typically, the audio block in...

sweera · 2024-01-31

Hi all,I am using the SAI peripheral on the STM32H753 and I have it set-up as follows:SAI2A - Master TX, asynchronousSAI2B - Slave RX, synchronous with sub-block ASAI3A - Slave TX, synchronous with SAI2SAI3B - Slave RX, synchronous with SAI2(SAI2 SYN...

sweera · 2024-02-07

I switched over to using double buffer mode, but I was still seeing glitches happening on the boundary of the DMA buffer.For example, if my DMA buffer size is 96 samples, I would see glitches at multiples of 96 samples.However, I seem to have found a...

sweera · 2024-02-04

Just realised after reading some other posts that DBM works on top of circular mode. I wasn't aware of that, I thought they were two different modes.Thanks, I will give that a try.

sweera · 2024-02-04

I'm using circular DMA mode and using the DMA half/full complete interrupts to copy out the half of the buffer that is not in use by DMA.There is also a key piece of information that I forgot to mention so far.The glitching on the slave SAI sub-block...

sweera · 2024-02-01

Thanks for the suggestions.I have my all my DMA buffers in SRAM2 (using a custom linker file)DMA priorities are set to HIGH (will test with VERY HIGH as well)DMA half/complete callbacks are as follows. Only giving a semaphore to unblock buffer copy i...

User statistics

User Activity

STM32H7 SAI synchronization clarification

Audio glitches on SAI slave sub-blocks (STM32H7)

Re: Audio glitches on SAI slave sub-blocks (STM32H7)

Re: Audio glitches on SAI slave sub-blocks (STM32H7)

Re: Audio glitches on SAI slave sub-blocks (STM32H7)

Re: Audio glitches on SAI slave sub-blocks (STM32H7)