Doing so more research I found that it has to do with what the other core from the one that is managing the I2S writing is doing. For example if its doing alot of work the I2S will get messed up and now longer have the correct timing. While if the other core is in a tight look it somehow works fine....

What does the cache fix actually do other then prevent a specific pattern of instructions from showing up?

Also the library I am using is not using the I2S ISR its just filling a buffer as quickly as it can as far as I can tell.

Anyone have any ideas why DMA based I2S would get messed up with a system using PSRAM? (With the DMA memory in main Ram of course)

I am using https://github.com/bitluni/ESP32CompositeVideo on a ESP32 WRover and when I enable the PSRAM and include the cache fix using -mfix-esp32-psram-cache-issue I run into issues where the TV loses sync. I suspect this is due to what every the fix does to the cache. Does anyone have any ideas o...

Is there any documentation on wifi stack so I could try and hack support for a 802.11 standard? Or is that some thing that Espressif can't release or opensource.

OLSR is the packet routing method for use on Wifi Mesh networks.

The mesh I am trying to use an ESP with uses the standard Ad-Hoc mode of wifi as defined by 802.11

I mentioned OLSR because I though it would be relevant. I feel like you didn't know what OLSR with that reply.

Is it possible to use an ESP32 as part of an existing mesh network that uses the opensource and widely used OLSR (Optimized Link State Routing Protocol)? I am interested in using them as low cost nodes to get thru areas that more expensive nodes wouldn't be a good choice.

It could be just static or something. Or you don't need an amplifier.

Question to you have your code up somewhere. I am interested in getting sound in and out thru the ADC and DAC also and haven't found many examples.

https://docs.espressif.com/projects/esp ... s_source_t can be used to attach I2S to the ADC for sampling Hope this helps.

I am also interested in this. Considering the on board ADC has a more then high enough sampling rate and has a high-ish bit depth it should work fine. Just depends on it you can actually set it up. Even with the 6khz filtering sort of stuff its fine considering thats about as wide as a SSB conversat...