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                                            Hideaki Tai

Slave sends back recevied data if master is making transactions too fast using transfer in the background

I think something is wrong because the data sent by master is not being received properly. (It should be 1-8, but it is 0-14.)

Slave sends back recevied data if master is making transactions too fast using transfer in the background

From the data you have provided, it appears that the master side is not sending data properly at 8MHz, so I would recommend that you use an ESP32 on the...

Slave sends back recevied data if master is making transactions too fast using transfer in the background

Are you applying the same initializeBuffer() to master? It should result 10 - 80 from master

Slave sends back recevied data if master is making transactions too fast using transfer in the background

If you haven’t changed `initializeBuffer()` on the master side, the slave should receive exactly eight bytes—values 0 through 7. It’s already suspicious that the slave is instead seeing values 0...

Slave sends back recevied data if master is making transactions too fast using transfer in the background

Please give me the following information correctly, so as not to waste our time 🙏 https://github.com/hideakitai/ESP32SPISlave/issues/63#issuecomment-2990321715

Octal SPI crashed on transfer

@Mark-sj Hi, could you try modifying ONLY `master.begin()` based on an example from this library first? When you try it, please enable debug logging (Core Debug Level: `None` -> `Debug`)