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ili9486.rs
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ili9486.rs
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use display_interface::{DataFormat, DisplayError, WriteOnlyDataCommand};
use embedded_graphics_core::{
pixelcolor::{Rgb565, Rgb666},
prelude::{IntoStorage, RgbColor},
};
use embedded_hal::{blocking::delay::DelayUs, digital::v2::OutputPin};
use crate::{instruction::Instruction, Display, Error};
use super::{write_command, Model};
/// ILI9486 display with Reset pin
/// in Rgb565 color mode (does *NOT* work with SPI)
/// Backlight pin is not controlled
pub struct ILI9486Rgb565;
/// ILI9486 display with Reset pin
/// in Rgb666 color mode (works with SPI)
/// Backlight pin is not controlled
pub struct ILI9486Rgb666;
impl Model for ILI9486Rgb565 {
type ColorFormat = Rgb565;
fn new() -> Self {
Self
}
fn init<RST, DELAY>(
&mut self,
di: &mut dyn WriteOnlyDataCommand,
rst: &mut Option<RST>,
delay: &mut DELAY,
) -> Result<(), Error<RST::Error>>
where
RST: OutputPin,
DELAY: DelayUs<u32>,
{
match rst {
Some(ref mut rst) => self.hard_reset(rst, delay)?,
None => write_command(di, Instruction::SWRESET, &[])?,
}
delay.delay_us(120_000);
init_common(di, delay).map_err(|_| Error::DisplayError)
}
fn write_pixels<DI, I>(&mut self, di: &mut DI, colors: I) -> Result<(), DisplayError>
where
DI: WriteOnlyDataCommand,
I: IntoIterator<Item = Self::ColorFormat>,
{
write_command(di, Instruction::RAMWR, &[])?;
let mut iter = colors.into_iter().map(|c| c.into_storage());
let buf = DataFormat::U16BEIter(&mut iter);
di.send_data(buf)
}
fn display_size(&self) -> (u16, u16) {
(320, 480)
}
}
impl Model for ILI9486Rgb666 {
type ColorFormat = Rgb666;
fn new() -> Self {
Self
}
fn init<RST, DELAY>(
&mut self,
di: &mut dyn WriteOnlyDataCommand,
rst: &mut Option<RST>,
delay: &mut DELAY,
) -> Result<(), Error<RST::Error>>
where
RST: OutputPin,
DELAY: DelayUs<u32>,
{
match rst {
Some(ref mut rst) => self.hard_reset(rst, delay)?,
None => write_command(di, Instruction::SWRESET, &[])?,
};
delay.delay_us(120_000);
init_common(di, delay).map_err(|_| Error::DisplayError)
}
fn write_pixels<DI, I>(&mut self, di: &mut DI, colors: I) -> Result<(), DisplayError>
where
DI: WriteOnlyDataCommand,
I: IntoIterator<Item = Self::ColorFormat>,
{
write_command(di, Instruction::RAMWR, &[])?;
let mut iter = colors.into_iter().flat_map(|c| {
let red = c.r() << 2;
let green = c.g() << 2;
let blue = c.b() << 2;
[red, green, blue]
});
let buf = DataFormat::U8Iter(&mut iter);
di.send_data(buf)
}
fn display_size(&self) -> (u16, u16) {
(320, 480)
}
}
// simplified constructor for Display
impl<DI, RST> Display<DI, RST, ILI9486Rgb565>
where
DI: WriteOnlyDataCommand,
RST: OutputPin,
{
///
/// Creates a new [Display] instance with [ILI9486] as the [Model]
/// *WARNING* Rgb565 only works on non-SPI setups with the ILI9486!
///
/// # Arguments
///
/// * `di` - a [DisplayInterface](WriteOnlyDataCommand) for talking with the display
/// * `rst` - display hard reset [OutputPin]
/// * `model` - the display [Model]
///
pub fn ili9486_rgb565(di: DI, rst: RST) -> Self {
Self::with_model(di, Some(rst), ILI9486Rgb565::new())
}
}
impl<DI, RST> Display<DI, RST, ILI9486Rgb666>
where
DI: WriteOnlyDataCommand,
RST: OutputPin,
{
///
/// Creates a new [Display] instance with [ILI9486] as the [Model]
///
/// # Arguments
///
/// * `di` - a [DisplayInterface](WriteOnlyDataCommand) for talking with the display
/// * `rst` - display hard reset [OutputPin]
/// * `model` - the display [Model]
///
pub fn ili9486_rgb666(di: DI, rst: RST) -> Self {
Self::with_model(di, Some(rst), ILI9486Rgb666::new())
}
}
// common init for all color format models
fn init_common<DELAY>(
di: &mut dyn WriteOnlyDataCommand,
delay: &mut DELAY,
) -> Result<(), DisplayError>
where
DELAY: DelayUs<u32>,
{
write_command(di, Instruction::SLPOUT, &[])?; // turn off sleep
write_command(di, Instruction::COLMOD, &[0b0110_0110])?; // 18bit 256k colors
write_command(di, Instruction::MADCTL, &[0b0000_0000])?; // left -> right, bottom -> top RGB
write_command(di, Instruction::VCMOFSET, &[0x00, 0x48, 0x00, 0x48])?; //VCOM Control 1 [00 40 00 40]
write_command(di, Instruction::INVCO, &[0x0])?; //Inversion Control [00]
// optional gamma setup
// write_command(di, Instruction::PGC, &[0x00, 0x2C, 0x2C, 0x0B, 0x0C, 0x04, 0x4C, 0x64, 0x36, 0x03, 0x0E, 0x01, 0x10, 0x01, 0x00])?; // Positive Gamma Control
// write_command(di, Instruction::NGC, &[0x0F, 0x37, 0x37, 0x0C, 0x0F, 0x05, 0x50, 0x32, 0x36, 0x04, 0x0B, 0x00, 0x19, 0x14, 0x0F])?; // Negative Gamma Control
write_command(di, Instruction::DFC, &[0b0000_0010, 0x02, 0x3B])?;
write_command(di, Instruction::NORON, &[])?; // turn to normal mode
write_command(di, Instruction::DISPON, &[])?; // turn on display
// DISPON requires some time otherwise we risk SPI data issues
delay.delay_us(120_000);
Ok(())
}