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Update Error type

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This commit is contained in:
Vadim Kaushan 2020-01-28 20:27:04 +03:00
parent 6056b3db22
commit 459545a777
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2 changed files with 34 additions and 25 deletions
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51
src/lib.rs
View file

@ -37,11 +37,17 @@ const WIDTH: usize = 240;
const HEIGHT: usize = 320;
#[derive(Debug)]
pub enum Error<SpiE, PinE> {
Spi(SpiE),
pub enum Error<IfaceE, PinE> {
Interface(IfaceE),
OutputPin(PinE),
}
impl<IfaceE, PinE> From<IfaceE> for Error<IfaceE, PinE> {
fn from(e: IfaceE) -> Self {
Error::Interface(e)
}
}
/// The default orientation is Portrait
pub enum Orientation {
Portrait,
@ -88,20 +94,23 @@ where
delay: &mut DELAY,
) -> Result<Self, Error<SpiE, PinE>> {
let interface = SpiInterface::new(spi, cs, dc);
Self::new(interface, reset, delay)
Self::new(interface, reset, delay).map_err(|e| match e {
Error::Interface(inner) => inner,
Error::OutputPin(inner) => Error::OutputPin(inner),
})
}
}
impl<SpiE, PinE, IFACE, RESET> Ili9341<IFACE, RESET>
impl<IfaceE, PinE, IFACE, RESET> Ili9341<IFACE, RESET>
where
IFACE: Interface<Error=Error<SpiE, PinE>>,
IFACE: Interface<Error=IfaceE>,
RESET: OutputPin<Error = PinE>,
{
pub fn new<DELAY: DelayMs<u16>>(
interface: IFACE,
reset: RESET,
delay: &mut DELAY,
) -> Result<Self, Error<SpiE, PinE>> {
) -> Result<Self, Error<IfaceE, PinE>> {
let mut ili9341 = Ili9341 {
interface,
reset,
@ -109,7 +118,7 @@ impl<SpiE, PinE, IFACE, RESET> Ili9341<IFACE, RESET>
height: HEIGHT,
};
ili9341.hard_reset(delay)?;
ili9341.hard_reset(delay).map_err(Error::OutputPin)?;
ili9341.command(Command::SoftwareReset, &[])?;
delay.delay_ms(200);
@ -153,35 +162,35 @@ impl<SpiE, PinE, IFACE, RESET> Ili9341<IFACE, RESET>
fn hard_reset<DELAY: DelayMs<u16>>(
&mut self,
delay: &mut DELAY,
) -> Result<(), Error<SpiE, PinE>> {
) -> Result<(), PinE> {
// set high if previously low
self.reset.set_high().map_err(Error::OutputPin)?;
self.reset.set_high()?;
delay.delay_ms(200);
// set low for reset
self.reset.set_low().map_err(Error::OutputPin)?;
self.reset.set_low()?;
delay.delay_ms(200);
// set high for normal operation
self.reset.set_high().map_err(Error::OutputPin)?;
self.reset.set_high()?;
delay.delay_ms(200);
Ok(())
}
fn command(&mut self, cmd: Command, args: &[u8]) -> Result<(), Error<SpiE, PinE>> {
fn command(&mut self, cmd: Command, args: &[u8]) -> Result<(), IFACE::Error> {
self.interface.write(cmd as u8, args)
}
fn write_iter<I: IntoIterator<Item = u16>>(
&mut self,
data: I,
) -> Result<(), Error<SpiE, PinE>> {
) -> Result<(), IFACE::Error> {
self.interface.write_iter(Command::MemoryWrite as u8, data)
}
fn write_raw(&mut self, data: &[u8]) -> Result<(), Error<SpiE, PinE>> {
fn write_raw(&mut self, data: &[u8]) -> Result<(), IFACE::Error> {
self.interface.write(Command::MemoryWrite as u8, data)
}
fn set_window(&mut self, x0: u16, y0: u16, x1: u16, y1: u16) -> Result<(), Error<SpiE, PinE>> {
fn set_window(&mut self, x0: u16, y0: u16, x1: u16, y1: u16) -> Result<(), IFACE::Error> {
self.command(
Command::ColumnAddressSet,
&[
@ -219,7 +228,7 @@ impl<SpiE, PinE, IFACE, RESET> Ili9341<IFACE, RESET>
x1: u16,
y1: u16,
data: I,
) -> Result<(), Error<SpiE, PinE>> {
) -> Result<(), IFACE::Error> {
self.set_window(x0, y0, x1, y1)?;
self.write_iter(data)
}
@ -241,13 +250,13 @@ impl<SpiE, PinE, IFACE, RESET> Ili9341<IFACE, RESET>
x1: u16,
y1: u16,
data: &[u8],
) -> Result<(), Error<SpiE, PinE>> {
) -> Result<(), IFACE::Error> {
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<SpiE, PinE>> {
pub fn set_orientation(&mut self, mode: Orientation) -> Result<(), IFACE::Error> {
match mode {
Orientation::Portrait => {
self.width = WIDTH;
@ -289,11 +298,11 @@ use embedded_graphics::drawable;
use embedded_graphics::{drawable::Pixel, pixelcolor::Rgb565, Drawing};
#[cfg(feature = "graphics")]
impl<SpiE, PinE, IFACE, RESET> Drawing<Rgb565> for Ili9341<IFACE, RESET>
impl<IfaceE, PinE, IFACE, RESET> Drawing<Rgb565> for Ili9341<IFACE, RESET>
where
IFACE: Interface<Error=Error<SpiE, PinE>>,
IFACE: Interface<Error = IfaceE>,
RESET: OutputPin<Error = PinE>,
SpiE: Debug,
IfaceE: Debug,
PinE: Debug,
{
fn draw<T>(&mut self, item_pixels: T)

8
src/spi.rs
View file

@ -41,10 +41,10 @@ impl<SPI, CS, DC, SpiE, PinE> Interface for SpiInterface<SPI, CS, DC>
self.cs.set_low().map_err(Error::OutputPin)?;
self.dc.set_low().map_err(Error::OutputPin)?;
self.spi.write(&[command]).map_err(Error::Spi)?;
self.spi.write(&[command]).map_err(Error::Interface)?;
self.dc.set_high().map_err(Error::OutputPin)?;
self.spi.write(data).map_err(Error::Spi)?;
self.spi.write(data).map_err(Error::Interface)?;
self.cs.set_high().map_err(Error::OutputPin)?;
Ok(())
@ -54,11 +54,11 @@ impl<SPI, CS, DC, SpiE, PinE> Interface for SpiInterface<SPI, CS, DC>
self.cs.set_low().map_err(Error::OutputPin)?;
self.dc.set_low().map_err(Error::OutputPin)?;
self.spi.write(&[command]).map_err(Error::Spi)?;
self.spi.write(&[command]).map_err(Error::Interface)?;
self.dc.set_high().map_err(Error::OutputPin)?;
for w in data.into_iter() {
self.spi.write(&w.to_be_bytes()).map_err(Error::Spi)?;
self.spi.write(&w.to_be_bytes()).map_err(Error::Interface)?;
}
self.cs.set_high().map_err(Error::OutputPin)?;