Posted on November 16, 2015 at 17:57The number of people with your configurations is approaching zero, and to wade through your code lacking much context, is a big ask. I certainly don't have time to waste on it.
Suggest you start by reviewing your hardware and connectivity, and try writing and reading back the SSD1289 register(s), and confirm things work at that level. And that you can access the frame buffer. Review the panel/chip documentation.
The peripheral banks have 16 pins, not 8, and I'm really not sure how the free/available pins relate to your implementation.
