Maybe some early observation: 1) The LSB of the sampled data is never toggeling. It seems like 11bit and 12 bit conversion mode are essentially the same, while the 12 bit mode only adds a 0 at the end. Could someone from espressif maybe comment on that? 2) In a quick trial it seems like even 40 MHz ...

Hi, with help of the technical manual, the driver source code, and some guess work I was able to get it running. See function below (I use it together with Arduino framework). I was not able to use funtion "spi_slave_hd_get_trans_res" to wait for the sampling to finish (always got a timeout), instea...