SSD1331 driver
SPI (4 wire) driver for the SSD1331 OLED display.
The display is configured by this driver to use a 16 bit, R5 G6 B5 pixel definition.
You can convert images into the correct RAW format with the following commands (assumes 8x8 PNG input):
convert ferris.png -flip -type truecolor -define bmp:subtype=RGB565 -depth 16 -strip ferris.bmp
tail -c 128 ferris.bmp > ferris.raw
From examples/image.rs
:
#![no_std]
#![no_main]
extern crate cortex_m;
extern crate cortex_m_rt as rt;
extern crate panic_semihosting;
extern crate stm32f1xx_hal as hal;
use cortex_m_rt::ExceptionFrame;
use cortex_m_rt::{entry, exception};
use embedded_graphics::image::Image1BPP;
use embedded_graphics::prelude::*;
use hal::i2c::{BlockingI2c, DutyCycle, Mode};
use hal::prelude::*;
use hal::stm32;
use ssd1331::prelude::*;
use ssd1331::Builder;
#[entry]
fn main() -> ! {
let cp = cortex_m::Peripherals::take().unwrap();
let dp = stm32::Peripherals::take().unwrap();
let mut flash = dp.FLASH.constrain();
let mut rcc = dp.RCC.constrain();
let clocks = rcc.cfgr.freeze(&mut flash.acr);
let mut afio = dp.AFIO.constrain(&mut rcc.apb2);
let mut gpioa = dp.GPIOA.split(&mut rcc.apb2);
let mut gpiob = dp.GPIOB.split(&mut rcc.apb2);
let sck = gpioa.pa5.into_alternate_push_pull(&mut gpioa.crl);
let miso = gpioa.pa6;
let mosi = gpioa.pa7.into_alternate_push_pull(&mut gpioa.crl);
let dc = gpiob.pb1.into_push_pull_output(&mut gpiob.crl);
let spi = Spi::spi1(
dp.SPI1,
(sck, miso, mosi),
&mut afio.mapr,
Mode {
polarity: Polarity::IdleLow,
phase: Phase::CaptureOnFirstTransition,
},
8.mhz(),
clocks,
&mut rcc.apb2,
);
let mut disp: GraphicsMode<_> = Builder::new().connect_spi(spi, dc).into();
disp.init().unwrap();
disp.flush().unwrap();
let im = Image1BPP::new(include_bytes!("./rust.raw"), 64, 64).translate(Coord::new(32, 0));
disp.draw(im.into_iter());
disp.flush().unwrap();
loop {}
}
#[exception]
fn HardFault(ef: &ExceptionFrame) -> ! {
panic!("{:#?}", ef);
}
License
Licensed under either of
at your option.
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.