I am using ESP32-S3-WROOM-1-N8R8 module in our project. As per datasheet, this module have 8 MB of External Flash and 8 MB of external PSRAM.

Now, I want to access external PSRAM in my project so I am enabling external PSRAM support from menuconfig.

However, I am getting following compilation ...

Dear L-KAYA,

Thank you for giving nice explanation.

Few question regarding i2s APIs function call.

1) what is the meaning of dma_buf_count = 8 which are passing during driver_install call?
Does it mean that DMA will create message queue ( size 8 buffer) of dma_buf_len to read data from i2s ?

2 ...

Dear L-KAYA,

I have the result of your provided code. I did not change anything in your configuration. However, still I am getting missing sample in data.
Following are the log message from my device.
W (28) bootloader_random: RNG for ESP32-S3 not currently supported
W (79) bootloader_random: RNG ...

Dear L-KAYA,

Thank you for your reply.

I will try your example and let you know the result soon.

Just wanted to say that, In my application, receive buffer size from i2s_read is fixed 1536 bytes(192 samples * 8 bytes per sample = 1536 bytes) with sampling freq of 48000.

Could you explain me how ...

Dear L-KAYA,

Nice to meet you again.

I am having different problem with I2S now.

By giving fix frequency(5k, 10k,15k etc.) sine wave from signal generator, ESP32S3 able to capture data correctly. I can see sine wave in audacity with fix frequency clearly.
Now instead of giving fix frequency as ...

Dear L-KAYA,

Thanks for supporting on this issue.

Finally, Something got works for me. Looks bit confusable but I2S working well now.

Here is few questions:

Sampling Freq : 48000, DMA buf len = 64, DMA buf cont = 8 , Read data using I2S_read = 64 *8, ch = 2, Sample bit= 32bit ---> Not working ...

Dear E-KAYA,

I checked with your given code example. Gave the 5khz sine wave to external ADC, and start sample from ESP32 with 48000 freq.
I used ESP32 instead of ESP32-S3 board.
But still I am getting noise output data.
Please check attachment for your reference.

FYI, current setup ADC + ESP32 is ...

Hello Rudi,

We are using ESP32-S3-WROOM-1-N8R2 module and that have 2 MB PSRAM.

We are using following master branch of ESP-IDF for ESP32-S3 for our development.

But When I looked in feature list supported into ESP32-S3 on following link, I understand that PSRAM is not supported yet in ESP-IDF ...

Thank you very much E-KAYA for sending me this details.

Now, let me try with your code. Instead of SD card, I am using flash memory to store output data of I2S.

Just want to clarify one thing is I am working on following commit id from master branch of ESP-IDF ...

No worries. Thank you.

For external ADC, I am using following EVM from TI.
https://www.ti.com/tool/PCM1808EVM

If you want other information please let me know.