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Update embedded-hal crates.

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This commit is contained in:
Dario Nieuwenhuis
2023-04-06 22:25:24 +02:00
parent f3ec6080bf
commit be37eee13d
28 changed files with 543 additions and 614 deletions
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2
examples/rp/.cargo/config.toml
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@ -1,5 +1,5 @@
[target.'cfg(all(target_arch = "arm", target_os = "none"))']
runner = "probe-run --chip RP2040"
runner = "probe-rs-cli run --chip RP2040"
[build]
target = "thumbv6m-none-eabi" # Cortex-M0 and Cortex-M0+

5
examples/rp/Cargo.toml
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@ -6,6 +6,7 @@ license = "MIT OR Apache-2.0"
[dependencies]
embassy-embedded-hal = { version = "0.1.0", path = "../../embassy-embedded-hal", features = ["defmt"] }
embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = ["defmt"] }
embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "defmt", "integrated-timers"] }
embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime"] }
@ -30,8 +31,8 @@ display-interface = "0.4.1"
byte-slice-cast = { version = "1.2.0", default-features = false }
smart-leds = "0.3.0"
embedded-hal-1 = { package = "embedded-hal", version = "=1.0.0-alpha.9" }
embedded-hal-async = "0.2.0-alpha.0"
embedded-hal-1 = { package = "embedded-hal", version = "=1.0.0-alpha.10" }
embedded-hal-async = "0.2.0-alpha.1"
embedded-io = { version = "0.4.0", features = ["async", "defmt"] }
embedded-storage = { version = "0.3" }
static_cell = "1.0.0"

158
examples/rp/src/bin/spi_display.rs
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@ -5,10 +5,13 @@
use core::cell::RefCell;
use defmt::*;
use embassy_embedded_hal::shared_bus::blocking::spi::SpiDeviceWithConfig;
use embassy_executor::Spawner;
use embassy_rp::gpio::{Level, Output};
use embassy_rp::spi;
use embassy_rp::spi::{Blocking, Spi};
use embassy_sync::blocking_mutex::raw::NoopRawMutex;
use embassy_sync::blocking_mutex::Mutex;
use embassy_time::Delay;
use embedded_graphics::image::{Image, ImageRawLE};
use embedded_graphics::mono_font::ascii::FONT_10X20;
@ -21,10 +24,9 @@ use st7789::{Orientation, ST7789};
use {defmt_rtt as _, panic_probe as _};
use crate::my_display_interface::SPIDeviceInterface;
use crate::shared_spi::SpiDeviceWithCs;
use crate::touch::Touch;
//const DISPLAY_FREQ: u32 = 64_000_000;
const DISPLAY_FREQ: u32 = 64_000_000;
const TOUCH_FREQ: u32 = 200_000;
#[embassy_executor::main]
@ -43,16 +45,20 @@ async fn main(_spawner: Spawner) {
//let touch_irq = p.PIN_17;
// create SPI
let mut config = spi::Config::default();
config.frequency = TOUCH_FREQ; // use the lowest freq
config.phase = spi::Phase::CaptureOnSecondTransition;
config.polarity = spi::Polarity::IdleHigh;
let mut display_config = spi::Config::default();
display_config.frequency = DISPLAY_FREQ;
display_config.phase = spi::Phase::CaptureOnSecondTransition;
display_config.polarity = spi::Polarity::IdleHigh;
let mut touch_config = spi::Config::default();
touch_config.frequency = TOUCH_FREQ;
touch_config.phase = spi::Phase::CaptureOnSecondTransition;
touch_config.polarity = spi::Polarity::IdleHigh;
let spi: Spi<'_, _, Blocking> = Spi::new_blocking(p.SPI1, clk, mosi, miso, config);
let spi_bus = RefCell::new(spi);
let spi: Spi<'_, _, Blocking> = Spi::new_blocking(p.SPI1, clk, mosi, miso, touch_config.clone());
let spi_bus: Mutex<NoopRawMutex, _> = Mutex::new(RefCell::new(spi));
let display_spi = SpiDeviceWithCs::new(&spi_bus, Output::new(display_cs, Level::High));
let touch_spi = SpiDeviceWithCs::new(&spi_bus, Output::new(touch_cs, Level::High));
let display_spi = SpiDeviceWithConfig::new(&spi_bus, Output::new(display_cs, Level::High), display_config);
let touch_spi = SpiDeviceWithConfig::new(&spi_bus, Output::new(touch_cs, Level::High), touch_config);
let mut touch = Touch::new(touch_spi);
@ -104,85 +110,9 @@ async fn main(_spawner: Spawner) {
}
}
mod shared_spi {
use core::cell::RefCell;
use core::fmt::Debug;
use embedded_hal_1::digital::OutputPin;
use embedded_hal_1::spi;
use embedded_hal_1::spi::SpiDevice;
#[derive(Copy, Clone, Eq, PartialEq, Debug)]
pub enum SpiDeviceWithCsError<BUS, CS> {
#[allow(unused)] // will probably use in the future when adding a flush() to SpiBus
Spi(BUS),
Cs(CS),
}
impl<BUS, CS> spi::Error for SpiDeviceWithCsError<BUS, CS>
where
BUS: spi::Error + Debug,
CS: Debug,
{
fn kind(&self) -> spi::ErrorKind {
match self {
Self::Spi(e) => e.kind(),
Self::Cs(_) => spi::ErrorKind::Other,
}
}
}
pub struct SpiDeviceWithCs<'a, BUS, CS> {
bus: &'a RefCell<BUS>,
cs: CS,
}
impl<'a, BUS, CS> SpiDeviceWithCs<'a, BUS, CS> {
pub fn new(bus: &'a RefCell<BUS>, cs: CS) -> Self {
Self { bus, cs }
}
}
impl<'a, BUS, CS> spi::ErrorType for SpiDeviceWithCs<'a, BUS, CS>
where
BUS: spi::ErrorType,
CS: OutputPin,
{
type Error = SpiDeviceWithCsError<BUS::Error, CS::Error>;
}
impl<'a, BUS, CS> SpiDevice for SpiDeviceWithCs<'a, BUS, CS>
where
BUS: spi::SpiBusFlush,
CS: OutputPin,
{
type Bus = BUS;
fn transaction<R>(
&mut self,
f: impl FnOnce(&mut Self::Bus) -> Result<R, BUS::Error>,
) -> Result<R, Self::Error> {
let mut bus = self.bus.borrow_mut();
self.cs.set_low().map_err(SpiDeviceWithCsError::Cs)?;
let f_res = f(&mut bus);
// On failure, it's important to still flush and deassert CS.
let flush_res = bus.flush();
let cs_res = self.cs.set_high();
let f_res = f_res.map_err(SpiDeviceWithCsError::Spi)?;
flush_res.map_err(SpiDeviceWithCsError::Spi)?;
cs_res.map_err(SpiDeviceWithCsError::Cs)?;
Ok(f_res)
}
}
}
/// Driver for the XPT2046 resistive touchscreen sensor
mod touch {
use embedded_hal_1::spi::{SpiBus, SpiBusRead, SpiBusWrite, SpiDevice};
use embedded_hal_1::spi::{Operation, SpiDevice};
struct Calibration {
x1: i32,
@ -209,7 +139,6 @@ mod touch {
impl<SPI> Touch<SPI>
where
SPI: SpiDevice,
SPI::Bus: SpiBus,
{
pub fn new(spi: SPI) -> Self {
Self { spi }
@ -219,13 +148,12 @@ mod touch {
let mut x = [0; 2];
let mut y = [0; 2];
self.spi
.transaction(|bus| {
bus.write(&[0x90])?;
bus.read(&mut x)?;
bus.write(&[0xd0])?;
bus.read(&mut y)?;
Ok(())
})
.transaction(&mut [
Operation::Write(&[0x90]),
Operation::Read(&mut x),
Operation::Write(&[0xd0]),
Operation::Read(&mut y),
])
.unwrap();
let x = (u16::from_be_bytes(x) >> 3) as i32;
@ -247,7 +175,7 @@ mod touch {
mod my_display_interface {
use display_interface::{DataFormat, DisplayError, WriteOnlyDataCommand};
use embedded_hal_1::digital::OutputPin;
use embedded_hal_1::spi::{SpiBusWrite, SpiDevice};
use embedded_hal_1::spi::SpiDeviceWrite;
/// SPI display interface.
///
@ -259,8 +187,7 @@ mod my_display_interface {
impl<SPI, DC> SPIDeviceInterface<SPI, DC>
where
SPI: SpiDevice,
SPI::Bus: SpiBusWrite,
SPI: SpiDeviceWrite,
DC: OutputPin,
{
/// Create new SPI interface for communciation with a display driver
@ -271,42 +198,27 @@ mod my_display_interface {
impl<SPI, DC> WriteOnlyDataCommand for SPIDeviceInterface<SPI, DC>
where
SPI: SpiDevice,
SPI::Bus: SpiBusWrite,
SPI: SpiDeviceWrite,
DC: OutputPin,
{
fn send_commands(&mut self, cmds: DataFormat<'_>) -> Result<(), DisplayError> {
let r = self.spi.transaction(|bus| {
// 1 = data, 0 = command
if let Err(_) = self.dc.set_low() {
return Ok(Err(DisplayError::DCError));
}
// 1 = data, 0 = command
self.dc.set_low().map_err(|_| DisplayError::DCError)?;
// Send words over SPI
send_u8(bus, cmds)?;
Ok(Ok(()))
});
r.map_err(|_| DisplayError::BusWriteError)?
send_u8(&mut self.spi, cmds).map_err(|_| DisplayError::BusWriteError)?;
Ok(())
}
fn send_data(&mut self, buf: DataFormat<'_>) -> Result<(), DisplayError> {
let r = self.spi.transaction(|bus| {
// 1 = data, 0 = command
if let Err(_) = self.dc.set_high() {
return Ok(Err(DisplayError::DCError));
}
// 1 = data, 0 = command
self.dc.set_high().map_err(|_| DisplayError::DCError)?;
// Send words over SPI
send_u8(bus, buf)?;
Ok(Ok(()))
});
r.map_err(|_| DisplayError::BusWriteError)?
send_u8(&mut self.spi, buf).map_err(|_| DisplayError::BusWriteError)?;
Ok(())
}
}
fn send_u8<T: SpiBusWrite>(spi: &mut T, words: DataFormat<'_>) -> Result<(), T::Error> {
fn send_u8<T: SpiDeviceWrite>(spi: &mut T, words: DataFormat<'_>) -> Result<(), T::Error> {
match words {
DataFormat::U8(slice) => spi.write(slice),
DataFormat::U16(slice) => {