APA102 driver for embedded-hal spi traits

For usage with the smart-leds crate.

License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Todo

• Implement a WriteIter based version

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

lib.rs:

Use apa102 leds via spi

• For usage with smart-leds
• Implements the SmartLedsWrite trait

Doesn't use the native brightness settings of the apa102 leds, since that runs at a much lower pwm frequency and thus nerfes the very high color pwm frequency. (According to Adafruit)

Needs a type implementing the blocking::spi::Write trait.