Data corruption / Placing driver in IRAM with Arduino?

[lizardking]

Hi

In my Arduino ESP32 project I use esp_dmx and also the EspAsyncWebServer and AsyncMQTT_ESP32. When the other 2 libs are active I sometimes get data corruption, in partucular when a MQTT message is published. If I dont publish MQTT messages (I still establish the connnection to the MQTT broker) everything seems to work as expected. I guess this is related to some of the async background work of MQTT or the webserver.

Could placing the driver into IRAM help (how?) resp. where does the driver reside by default on Arduino?

I have read the "Using Flash or Disabling Cache" section of the readme, but do not understand fully where the driver resides when for Arduino projects and whether it is possible to place the driver into IRAM in an Arduino project.

[riwalker]

I use MQTT from esp-idf, and do not use EspAsyncWebServer, hence do not see any corruption.

[lizardking]

I have experimented a bit more.
When I switched from using AsnyMQTT_ESP32 to Async-Mqtt client by Marvin Roger my data corruption issues were gone. IDK whther the problem was caused by the MQTT lib or if it is just a combination issue between the different libs.