mirror of
https://github.com/Anshorei/epd-waveshare.git
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Add Bluepill example & some other minor improvements (#28)
- added bluepill example - improved ci config - travis: run fmt only once - travis: fixed target issues
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Chris
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#![no_main]
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#![no_std]
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// set the panic handler
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#[allow(unused_imports)]
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use panic_semihosting;
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use cortex_m_rt::entry;
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use stm32f1xx_hal::prelude::*;
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use stm32f1xx_hal::{delay, spi};
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use embedded_graphics::{
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coord::Coord,
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fonts::{Font12x16, Font6x8},
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prelude::*,
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primitives::{Circle, Line},
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Drawing,
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};
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use epd_waveshare::{
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epd4in2::Display4in2,
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graphics::{Display, DisplayRotation},
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prelude::*,
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};
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#[entry]
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fn main() -> ! {
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let core = cortex_m::Peripherals::take().unwrap();
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let device = stm32f1xx_hal::stm32::Peripherals::take().unwrap();
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let mut rcc = device.RCC.constrain();
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let mut flash = device.FLASH.constrain();
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let clocks = rcc
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.cfgr
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.use_hse(8.mhz())
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.sysclk(72.mhz())
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.pclk1(36.mhz())
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.freeze(&mut flash.acr);
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let mut gpioa = device.GPIOA.split(&mut rcc.apb2);
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let mut gpiob = device.GPIOB.split(&mut rcc.apb2);
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let mut delay = delay::Delay::new(core.SYST, clocks);
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// spi setup
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let sck = gpiob.pb13.into_alternate_push_pull(&mut gpiob.crh);
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let miso = gpiob.pb14;
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let mosi = gpiob.pb15.into_alternate_push_pull(&mut gpiob.crh);
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let mut spi = spi::Spi::spi2(
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device.SPI2,
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(sck, miso, mosi),
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epd_waveshare::SPI_MODE,
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4.mhz(),
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clocks,
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&mut rcc.apb1,
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);
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// epd setup
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let mut epd4in2 = epd_waveshare::epd4in2::EPD4in2::new(
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&mut spi,
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gpiob.pb12.into_push_pull_output(&mut gpiob.crh),
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gpioa.pa10.into_floating_input(&mut gpioa.crh),
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gpioa.pa8.into_push_pull_output(&mut gpioa.crh),
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gpioa.pa9.into_push_pull_output(&mut gpioa.crh),
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&mut delay,
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)
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.unwrap();
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epd4in2.set_lut(&mut spi, Some(RefreshLUT::QUICK)).unwrap();
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epd4in2.clear_frame(&mut spi).unwrap();
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//println!("Test all the rotations");
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let mut display = Display4in2::default();
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display.set_rotation(DisplayRotation::Rotate0);
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display.draw(
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Font6x8::render_str("Rotate 0!")
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.with_stroke(Some(Color::Black))
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.with_fill(Some(Color::White))
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.translate(Coord::new(5, 50))
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.into_iter(),
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);
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display.set_rotation(DisplayRotation::Rotate90);
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display.draw(
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Font6x8::render_str("Rotate 90!")
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.with_stroke(Some(Color::Black))
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.with_fill(Some(Color::White))
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.translate(Coord::new(5, 50))
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.into_iter(),
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);
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display.set_rotation(DisplayRotation::Rotate180);
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display.draw(
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Font6x8::render_str("Rotate 180!")
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.with_stroke(Some(Color::Black))
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.with_fill(Some(Color::White))
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.translate(Coord::new(5, 50))
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.into_iter(),
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);
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display.set_rotation(DisplayRotation::Rotate270);
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display.draw(
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Font6x8::render_str("Rotate 270!")
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.with_stroke(Some(Color::Black))
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.with_fill(Some(Color::White))
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.translate(Coord::new(5, 50))
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.into_iter(),
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);
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epd4in2.update_frame(&mut spi, &display.buffer()).unwrap();
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epd4in2
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.display_frame(&mut spi)
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.expect("display frame new graphics");
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delay.delay_ms(5000u16);
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//println!("Now test new graphics with default rotation and some special stuff:");
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display.clear_buffer(Color::White);
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// draw a analog clock
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display.draw(
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Circle::new(Coord::new(64, 64), 64)
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.with_stroke(Some(Color::Black))
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.into_iter(),
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);
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display.draw(
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Line::new(Coord::new(64, 64), Coord::new(0, 64))
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.with_stroke(Some(Color::Black))
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.into_iter(),
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);
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display.draw(
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Line::new(Coord::new(64, 64), Coord::new(80, 80))
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.with_stroke(Some(Color::Black))
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.into_iter(),
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);
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// draw white on black background
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display.draw(
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Font6x8::render_str("It's working-WoB!")
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// Using Style here
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.with_style(Style {
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fill_color: Some(Color::Black),
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stroke_color: Some(Color::White),
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stroke_width: 0u8, // Has no effect on fonts
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})
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.translate(Coord::new(175, 250))
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.into_iter(),
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);
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// use bigger/different font
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display.draw(
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Font12x16::render_str("It's working-BoW!")
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// Using Style here
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.with_style(Style {
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fill_color: Some(Color::White),
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stroke_color: Some(Color::Black),
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stroke_width: 0u8, // Has no effect on fonts
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})
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.translate(Coord::new(50, 200))
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.into_iter(),
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);
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// a moving `Hello World!`
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let limit = 10;
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epd4in2.set_lut(&mut spi, Some(RefreshLUT::QUICK)).unwrap();
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epd4in2.clear_frame(&mut spi).unwrap();
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for i in 0..limit {
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//println!("Moving Hello World. Loop {} from {}", (i + 1), limit);
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display.draw(
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Font6x8::render_str(" Hello World! ")
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.with_style(Style {
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fill_color: Some(Color::White),
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stroke_color: Some(Color::Black),
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stroke_width: 0u8, // Has no effect on fonts
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})
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.translate(Coord::new(5 + i * 12, 50))
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.into_iter(),
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);
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epd4in2.update_frame(&mut spi, &display.buffer()).unwrap();
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epd4in2
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.display_frame(&mut spi)
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.expect("display frame new graphics");
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delay.delay_ms(1_000u16);
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}
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//println!("Finished tests - going to sleep");
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epd4in2.sleep(&mut spi).expect("epd goes to sleep");
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loop {
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// sleep
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cortex_m::asm::wfi();
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}
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}
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