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Merge pull request #5 from flaminggoat/master

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Digital v2 output pin, corrected embedded-graphics endianness
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Yuri Iozzelli 2019-12-19 09:44:47 +01:00 committed by GitHub
commit 26933b663c
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1 changed files with 51 additions and 46 deletions
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97
src/lib.rs
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@ -7,7 +7,7 @@ extern crate embedded_graphics;
use hal::blocking::delay::DelayMs;
use hal::blocking::spi;
use hal::digital::OutputPin;
use hal::digital::v2::OutputPin;
use hal::spi::{Mode, Phase, Polarity};
use core::fmt::Debug;
@ -23,8 +23,9 @@ const WIDTH: usize = 240;
const HEIGHT: usize = 320;
#[derive(Debug)]
pub enum Error<E> {
Spi(E),
pub enum Error<SpiE, PinE> {
Spi(SpiE),
OutputPin(PinE)
}
/// The default orientation is Portrait
@ -60,20 +61,21 @@ pub struct Ili9341<SPI, CS, DC, RESET> {
height: usize,
}
impl<E, SPI, CS, DC, RESET> Ili9341<SPI, CS, DC, RESET>
impl<SpiE, PinE, SPI, CS, DC, RESET> Ili9341<SPI, CS, DC, RESET>
where
SPI: spi::Transfer<u8, Error = E> + spi::Write<u8, Error = E>,
CS: OutputPin,
DC: OutputPin,
RESET: OutputPin,
SPI: spi::Transfer<u8, Error = SpiE> + spi::Write<u8, Error = SpiE>,
CS: OutputPin<Error = PinE>,
DC: OutputPin<Error = PinE>,
RESET: OutputPin<Error = PinE>,
{
pub fn new<DELAY: DelayMs<u16>>(
spi: SPI,
cs: CS,
dc: DC,
reset: RESET,
delay: &mut DELAY,
) -> Result<Self, Error<E>> {
) -> Result<Self, Error<SpiE, PinE>> {
let mut ili9341 = Ili9341 {
spi,
cs,
@ -83,7 +85,7 @@ where
height: HEIGHT,
};
ili9341.hard_reset(delay);
ili9341.hard_reset(delay)?;
ili9341.command(Command::SoftwareReset, &[])?;
delay.delay_ms(200);
@ -124,62 +126,63 @@ where
Ok(ili9341)
}
fn hard_reset<DELAY: DelayMs<u16>>(&mut self, delay: &mut DELAY) {
fn hard_reset<DELAY: DelayMs<u16>>(&mut self, delay: &mut DELAY) -> Result<(), Error<SpiE,PinE>> {
// set high if previously low
self.reset.set_high();
self.reset.set_high().map_err(Error::OutputPin)?;
delay.delay_ms(200);
// set low for reset
self.reset.set_low();
self.reset.set_low().map_err(Error::OutputPin)?;
delay.delay_ms(200);
// set high for normal operation
self.reset.set_high();
self.reset.set_high().map_err(Error::OutputPin)?;
delay.delay_ms(200);
}
fn command(&mut self, cmd: Command, args: &[u8]) -> Result<(), Error<E>> {
self.cs.set_low();
self.dc.set_low();
self.spi.write(&[cmd as u8]).map_err(Error::Spi)?;
self.dc.set_high();
self.spi.write(args).map_err(Error::Spi)?;
self.cs.set_high();
Ok(())
}
fn write_iter<I: IntoIterator<Item = u16>>(&mut self, data: I) -> Result<(), Error<E>> {
self.cs.set_low();
fn command(&mut self, cmd: Command, args: &[u8]) -> Result<(), Error<SpiE, PinE>> {
self.cs.set_low().map_err(Error::OutputPin)?;
self.dc.set_low();
self.dc.set_low().map_err(Error::OutputPin)?;
self.spi.write(&[cmd as u8]).map_err(Error::Spi)?;
self.dc.set_high().map_err(Error::OutputPin)?;
self.spi.write(args).map_err(Error::Spi)?;
self.cs.set_high().map_err(Error::OutputPin)?;
Ok(())
}
fn write_iter<I: IntoIterator<Item = u16>>(&mut self, data: I) -> Result<(), Error<SpiE, PinE>> {
self.cs.set_low().map_err(Error::OutputPin)?;
self.dc.set_low().map_err(Error::OutputPin)?;
self.spi
.write(&[Command::MemoryWrite as u8])
.map_err(Error::Spi)?;
self.dc.set_high();
self.dc.set_high().map_err(Error::OutputPin)?;
for d in data.into_iter() {
self.spi
.write(&[(d >> 8) as u8, (d & 0xff) as u8])
.map_err(Error::Spi)?;
}
self.cs.set_high();
self.cs.set_high().map_err(Error::OutputPin)?;
Ok(())
}
fn write_raw(&mut self, data: &[u8]) -> Result<(), Error<E>> {
self.cs.set_low();
fn write_raw(&mut self, data: &[u8]) -> Result<(), Error<SpiE, PinE>> {
self.cs.set_low().map_err(Error::OutputPin)?;
self.dc.set_low();
self.dc.set_low().map_err(Error::OutputPin)?;
self.spi
.write(&[Command::MemoryWrite as u8])
.map_err(Error::Spi)?;
self.dc.set_high();
self.dc.set_high().map_err(Error::OutputPin)?;
self.spi.write(data).map_err(Error::Spi)?;
self.cs.set_high();
self.cs.set_high().map_err(Error::OutputPin)?;
Ok(())
}
fn set_window(&mut self, x0: u16, y0: u16, x1: u16, y1: u16) -> Result<(), Error<E>> {
fn set_window(&mut self, x0: u16, y0: u16, x1: u16, y1: u16) -> Result<(), Error<SpiE, PinE>> {
self.command(
Command::ColumnAddressSet,
&[
@ -216,7 +219,7 @@ where
x1: u16,
y1: u16,
data: I,
) -> Result<(), Error<E>> {
) -> Result<(), Error<SpiE, PinE>> {
self.set_window(x0, y0, x1, y1)?;
self.write_iter(data)
}
@ -237,12 +240,12 @@ where
x1: u16,
y1: u16,
data: &[u8],
) -> Result<(), Error<E>> {
) -> Result<(), Error<SpiE, PinE>> {
self.set_window(x0, y0, x1, y1)?;
self.write_raw(data)
}
/// Change the orientation of the screen
pub fn set_orientation(&mut self, mode: Orientation) -> Result<(), Error<E>> {
pub fn set_orientation(&mut self, mode: Orientation) -> Result<(), Error<SpiE, PinE>> {
match mode {
Orientation::Portrait => {
self.width = WIDTH;
@ -282,14 +285,16 @@ use embedded_graphics::drawable;
use embedded_graphics::{drawable::Pixel, pixelcolor::Rgb565, Drawing};
#[cfg(feature = "graphics")]
impl<E, SPI, CS, DC, RESET> Drawing<Rgb565> for Ili9341<SPI, CS, DC, RESET>
impl<SpiE, PinE, SPI, CS, DC, RESET> Drawing<Rgb565> for Ili9341<SPI, CS, DC, RESET>
where
SPI: spi::Transfer<u8, Error = E> + spi::Write<u8, Error = E>,
CS: OutputPin,
DC: OutputPin,
RESET: OutputPin,
E: Debug,
SPI: spi::Transfer<u8, Error = SpiE> + spi::Write<u8, Error = SpiE>,
CS: OutputPin<Error = PinE>,
DC: OutputPin<Error = PinE>,
RESET: OutputPin<Error = PinE>,
SpiE: Debug,
PinE: Debug,
{
fn draw<T>(&mut self, item_pixels: T)
where
T: IntoIterator<Item = drawable::Pixel<Rgb565>>,
@ -304,7 +309,7 @@ where
pos.y as u16,
&embedded_graphics::pixelcolor::raw::RawU16::from(color)
.into_inner()
.to_le_bytes(),
.to_be_bytes(),
)
.expect("Failed to communicate with device");
}