blocking i2s function without DMA

[proleaveprod]

Hi!
Is there way to write data to i2s without DMA?

I need to generate signal impulse in real-time, currently, i need to generate my array at once, when i call the generate function

kit.write() is not matched, cause it use DMA and it uses ring-buffer of DMA.

If i use kit.write() , my signal generates, but delay between calling of kit.write() and real generating on output of es8388.

I tried to start and stop i2s by function i2s_start and i2s_stop and it worked in realtime, but 1 in 16 impulses i hear strange clip and i cant understand why it comes.

Please tell me...

[pschatzmann]

You can minimize the delay by decreasing the i2s buffer.
You might get rid of the strange noise by setting the use_apll and tx_desc_auto_clear to true