mirror of
https://github.com/yuri91/ili9341-rs.git
synced 2024-06-16 04:00:33 +00:00
68 lines
2 KiB
Rust
68 lines
2 KiB
Rust
use embedded_hal::blocking::spi;
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use embedded_hal::spi::{Mode, Phase, Polarity};
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use embedded_hal::digital::v2::OutputPin;
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use crate::{Interface, Error};
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/// SPI mode
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pub const MODE: Mode = Mode {
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polarity: Polarity::IdleLow,
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phase: Phase::CaptureOnFirstTransition,
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};
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/// `Interface` implementation for SPI interfaces
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pub struct SpiInterface<SPI, CS, DC> {
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spi: SPI,
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cs: CS,
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dc: DC,
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}
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impl<SPI, CS, DC, SpiE, PinE> SpiInterface<SPI, CS, DC>
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where SPI: spi::Transfer<u8, Error = SpiE> + spi::Write<u8, Error = SpiE>,
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CS: OutputPin<Error = PinE>,
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DC: OutputPin<Error = PinE>,
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{
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pub fn new(spi: SPI, cs: CS, dc: DC) -> Self {
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Self {
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spi,
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cs,
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dc,
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}
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}
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}
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impl<SPI, CS, DC, SpiE, PinE> Interface for SpiInterface<SPI, CS, DC>
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where SPI: spi::Transfer<u8, Error = SpiE> + spi::Write<u8, Error = SpiE>,
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CS: OutputPin<Error = PinE>,
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DC: OutputPin<Error = PinE>,
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{
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type Error = Error<SpiE, PinE>;
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fn write(&mut self, command: u8, data: &[u8]) -> Result<(), Self::Error> {
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self.cs.set_low().map_err(Error::OutputPin)?;
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self.dc.set_low().map_err(Error::OutputPin)?;
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self.spi.write(&[command]).map_err(Error::Interface)?;
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self.dc.set_high().map_err(Error::OutputPin)?;
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self.spi.write(data).map_err(Error::Interface)?;
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self.cs.set_high().map_err(Error::OutputPin)?;
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Ok(())
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}
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fn write_iter(&mut self, command: u8, data: impl IntoIterator<Item=u16>) -> Result<(), Self::Error> {
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self.cs.set_low().map_err(Error::OutputPin)?;
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self.dc.set_low().map_err(Error::OutputPin)?;
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self.spi.write(&[command]).map_err(Error::Interface)?;
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self.dc.set_high().map_err(Error::OutputPin)?;
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for w in data.into_iter() {
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self.spi.write(&w.to_be_bytes()).map_err(Error::Interface)?;
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}
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self.cs.set_high().map_err(Error::OutputPin)?;
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Ok(())
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}
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}
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