Adafruit Nexopixel Library not working...

[Mangy_Dog]

Hi @fpiSTM has said in other threads this lirbary has been forked/ported to stm32core.
But im having a real hard time getting it to work.
Basically my led strip is only showing white. (full RGB)
Whats interesting. if I set the leds less than my strip length, it only lights that number of leds. So some data at least the reset bit is getting across.
Just not the RGB...

Ive ran out of ideas has anyone else got any ideas what to check?

Running on STM32F030, 3.3V powered to the STM32, The strip 5V powered with a shared ground. Power supply is stable and clean.