Waveshare 1.54 V2 does not work

[agmes4]

Problem

I tried using this lib for the waveshare 1.54 V2 this did not work

Things I noticed

After some trying I noticed that when ever writing data image in 4 Pin mode the chip select is pulled to high every time a byte was written to the bus. When trying an other Arduino sketch it worked. The only change I noticed on the Bus was that it did not pull the CS to high when ever a byte of the image was written.

[semiversus]

I have the same problem and can confirm the strange chip select behavior.

[caemor]

Could you try to change the SINGLE_BYTE_WRITE to false in src/epd1in54_v2/mod.rs:12.
I don't have the same display in my hands so I'm not able to test this.