low level device driver for RGB LED strip FIT0613

Hello,
I am using RGB LED strip FIT0613. I searched on the internet for the examples, but all of them just provide high level application and no one provides low-level device driver for this device.
Is there anywhere the low-level driver can be downloaded or I have to design it myself? Thanks!
Best regards,
Crane
Thanks Jenna for your reply and information. It looks that it is using GPIO to generate the control waveform. What's left unclear for me is how each LED is controlled while many are connected. If the control signal is sent out continuously, how each LED knows which signal is for it.
I don't want to study the example to get to know that as it is for many models and quite complicated. If anyone knows and can explain to me briefly, that will be really appreciated.
Thanks!
Crane

Hi! Suggested study: https://github.com/adafruit/Adafruit_NeoPixel/blob/master/Adafruit_NeoPixel.cpp
