I've finally managed to buy an OLED display. It is supposed to be a bit bigger (1.3''), white color and I2C only. While the display is in transit, I've reconsidered not using NuttX.

For the initial tests, I only need I2C support, which is not available on NuttX for the teensy 3.1. However, I've actually coded this in the past (not for NuttX) but I've lost the code, so I will implement it and actually contribute it to NuttX at the same time. Luckily, I already understand I2C quite well (in contrast to SPI, which I thought I would use).

I will probably put the code (in progress) up in github soon, once I get I2C working.

Hopefully I can make some pretty graphics soon =)