Did you get your problem sorted out, or is it still unresolved?
If you are still having difficulty, I will try to help as much as I can. I don't have specific knowledge of the ST7735 controller, but I have recently done a fair amount of work with an Xmega and an ILI9341 controller.
The code example you include only tells part of the story. Your CONFIG SPIE line includes SS = NONE ... but you don't show any code to illustrate what you are doing (if anything) with the SS pin. Did you set it to output, so that SPI will be in master mode (as it should be)?
I realize this is an older post - but I also just noticed that no one else had tried to help, so I figured I would jump in. If it is already solved ... congratulations! Otherwise, give a few more details, and I will see what I can do.
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