ArduinoSoftSpi - Use an SdCard and drive lots of APA102 Leds!

ArduinoSoftSpi

We are releasing Arduino code that enables the use of an SD-card and an APA102/spi led strip on the Teensy 3.1 platform.
This one-header library specifies a highly optimized software implementation of SPI. This ArduionSoftSpi is estimated to be able to drive two thousand APA102 pixels @ ~30 fps, based on a test of 435 pixels running at 4ms refresh rate.

Using a software implementation of spi eliminates the SPI conflict when attempting to drive the APA102 leds and also reading from an SdCard.

This code was pulled from a beta implementation of another library.

Git it here:
https://github.com/niteris/ArduinoSoftSpi

Zackees

PS: We forgot which library we pulled this code from. It definatly wasn't us who wrote it originally. If anyone recognizes the original code please send us a link so that we can amend the attribution!

Perhaps from https://github.com/greiman/SdFat or one of the derivatives? Looks very similar.

Nope, it was some other code.

Btw, just to clarify for anyone else, the SoftSpi presented will be used to drive the LED strips, NOT the SdCard.

@zackees, It would be useful to see a fuller example sketch of usage for this lib.