How to connect an external dac? about ka-radio32 HOT 12 CLOSED

For TTGO TM try my fork https://github.com/pilnikov/KaRadio32_fork

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I modified gpio.h (for correct connection) addon.c (for display Russian on the screen) and disabled the unused RDA module. Maybe it's really in the new IDF? I've make my firmware for a long time ago.

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ok! i try it. Maybe tomorrow.
P.S not

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https://yadi.sk/d/AYk_Jhi13Xqi78 full project include idf, exclude msys. need corrected path

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Try ESP Vin connect to DAC VCC and plug ESP in USB port, better power bank.

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Thank you. Works good.

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@Primus007
I also have one of these DAC based on the PCM5102. More specifically I have a board that comes with the DAC, LCD and battery support.

The issue is that when I configure the KaRadio to use the proper IOs, and the I2S output, I get some audio output, but I get music playing really fast and noisy, like if it was playing in fast forward.

I've been looking around for any possible cause, but could not really figure it out so far. Which IDF and SDK versions are you using? Did you need to change any other config to get it working?

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@pilnikov I did try your fork. But it has a couple of issues. I even opened an issue there.
Thing is that you dont provide all the source, so its not possible to compile the code.
I tried to merge your changes with the one from KaRadio, and managed to get the LCD working, and managed to get some audio coming out. But the same issue still hold: The music plays really fast, like fast-forwarding

I wonder why. You either changed something else on the code which is not on the repo (for example the project configs). Or the same code does no longer work with the latest expressif IDF

(by the way, if I flash the binaries you provide, then it works just fine.)

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@pilnikov
Yes. I've merged those exact changes on this code here, and it does not work. The music plays in fast-forward. Some issue with rates. Really dont know what. Do you think you can test it again and see if you find something?

Edit:
Which IDF version did you use to compile? Remember?

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I used the current (on March) version of IDF (3 months ago was March)

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That's strange.. By merging the code you have on your repo with this one here, I swear it doesnt work. Unless you changed something else on the sdkconfig file, or any other config at runtime.

Let me know please.

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Tried to compile, but could not. Some weird errors... Really lost on this topic

Edit: So I managed to compile your code using the latest IDF! Resulting in the same shitty fast-forwarded audio!
Curiously, if I flash your binaries, as you sent them, it works just fine. The issue is either with the IDF or with the xtensa-esp32-elf sdk..... Its definitely a bug.

Edit2: forgot to say that Im using Linux Mint 19 (based on Ubuntu 18.04) with the cross compiler I found here: https://dl.espressif.com/doc/esp-idf/latest/get-started/linux-setup.html and the latest clone from the IDF

Edit3: I found out why and how to solve it. Its basically the I2S library that got major updates lately. By using the latest IDF with the previous I2S library version, I managed to compile and get radio working. Now I have to figure out a way to get it working without downgrading. Need to investigate more.

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