Did you by any chance upgrade the Pico C SDK you are using on the Pico? The reason I ask, is that I hit something similar when I upgraded my Pico code to version 2.0.0 of the Pico C SDK . I too was seeing truncated data at ~32 bytes like you are seeing but I wasn't using a Raspberry Pi SBC on the receiving side. In my case it wasn't the actual fault of that 2.0.0 code though but the receiving UART side. It just so happens that the receiving UART also had a 32-byte receive FIFO. The timing of how the UART data is sent using the Pico C SDK 2.0.0 was different enough that I was dropping data on my receiver and I had to fix that receiver UART code and not the Pico code to stop dropping data.
Statistics: Posted by adam_green — Wed Sep 11, 2024 8:33 pm