fixed bad documentation of the 2in9 epd

src/epd2in9/mod.rs

@@ -1,30 +1,7 @@
-//! A simple Driver for the Waveshare 4.2" E-Ink Display via SPI
+//! A simple Driver for the Waveshare 2.9" E-Ink Display via SPI
 //! 
-//! The other Waveshare E-Ink Displays should be added later on
-//! 
-//! Build with the help of documentation/code from [Waveshare](https://www.waveshare.com/wiki/4.2inch_e-Paper_Module), 
-//! [Ben Krasnows partial Refresh tips](https://benkrasnow.blogspot.de/2017/10/fast-partial-refresh-on-42-e-paper.html) and
-//! the driver documents in the `pdfs`-folder as orientation.
-//!
-//! This driver was built using [`embedded-hal`] traits.
-//!
-//! [`embedded-hal`]: https://docs.rs/embedded-hal/~0.1
-//! 
-//! # Requirements
-//! 
-//! ### SPI
-//! 
-//! - MISO is not connected/available
-//! - SPI_MODE_0 is used (CPHL = 0, CPOL = 0)
-//! - 8 bits per word, MSB first
-//! - Max. Speed tested was 8Mhz but more should be possible
-//! 
-//! ### Other....
-//! 
-//! - Buffersize: Wherever a buffer is used it always needs to be of the size: `width / 8 * length`, 
-//!   where width and length being either the full e-ink size or the partial update window size
 //!
-//! # Examples
+//! # Examples from the 4.2" Display. It should work the same for the 2.9" one.
 //!
 //! ```ignore
 //! let mut epd4in2 = EPD4in2::new(spi, cs, busy, dc, rst, delay).unwrap();
@@ -41,13 +18,6 @@
 //! 
 //! epd4in2.sleep();
 //! ```
-//! 
-//! 
-//!
-//! BE CAREFUL! The Partial Drawing can "destroy" your display.
-//! It needs more testing first.
-//! 
-//! Is initalised with slow full LUT
 
 
 use hal::{