Sprite, thx, I learned something from your response. However, wouldn't such a semaphore be given in a custom ISR? If so, I'm back to the original problem. That is: How do I schedule the isr? (I still return ESP_ERR_NOT_FOUND from esp_i2s_alloc?). I am seeing that a default ISR is created on i2s_driv...

Hello, Sampling I2S audio from an ics43434 is trivial enough polling away using i2S_read to a buffer w/in a while loop. However, I am surprised to see that I have been unsuccessful sampling i2s audio using an ISR. Furthermore, I see no examples of doing this on the internet! :shock: To be clear, I m...