Merge pull request #32 from VersBinarii/examples

Add RTIC based example for stm32f411 BlackPill
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Yuri Iozzelli 2022-04-18 10:48:01 +02:00 committed by GitHub
commit d933649c19
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2 changed files with 122 additions and 0 deletions

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@ -18,7 +18,20 @@ embedded-hal = "1.0.0-alpha.7"
optional = true optional = true
version = "0.3" version = "0.3"
[dev-dependencies]
cortex-m-rtic = "1.0.0"
cortex-m = "0.7.3"
cortex-m-rt = "0.7.0"
defmt-rtt = "0.3.0"
panic-semihosting = "0.6"
[dev-dependencies.stm32f4xx-hal]
version = "0.12.0"
features = ["stm32f411"]
[features] [features]
default = ["graphics"] default = ["graphics"]
graphics = ["embedded-graphics-core"] graphics = ["embedded-graphics-core"]
[[example]]
name = "rtic"

109
examples/rtic.rs Normal file
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@ -0,0 +1,109 @@
//! cortex-m-rtic example
//! Tested on BlackPill dev board with stm32f411ceu microcontroller
//! The LCD RESET pin was hard puled to Vcc therefore
//! DummyOutputPin was used as the reset pin
#![no_main]
#![no_std]
#[rtic::app(device = stm32f4xx_hal::pac)]
mod app {
use display_interface_spi::SPIInterface;
use embedded_graphics::{
mono_font::{ascii::FONT_6X10, MonoTextStyle},
pixelcolor::Rgb565,
prelude::*,
text::{Alignment, Text},
};
use embedded_hal::digital::{blocking::OutputPin, ErrorType, PinState};
use ili9341::{DisplaySize240x320, Ili9341, Orientation};
use stm32f4xx_hal::{
prelude::*,
spi::{Mode, NoMiso, Phase, Polarity},
timer::Channel,
};
#[derive(Default)]
pub struct DummyOutputPin;
impl ErrorType for DummyOutputPin {
type Error = ();
}
impl OutputPin for DummyOutputPin {
fn set_low(&mut self) -> Result<(), Self::Error> {
Ok(())
}
fn set_high(&mut self) -> Result<(), Self::Error> {
Ok(())
}
fn set_state(&mut self, _state: PinState) -> Result<(), Self::Error> {
Ok(())
}
}
#[shared]
struct Shared {}
#[local]
struct Local {}
#[init]
fn init(ctx: init::Context) -> (Shared, Local, init::Monotonics) {
let dp = ctx.device;
let rcc = dp.RCC.constrain();
let clocks = rcc.cfgr.use_hse(25.MHz()).sysclk(100.MHz()).freeze();
let gpioa = dp.GPIOA.split();
let gpiob = dp.GPIOB.split();
/*
* The ILI9341 driver
*/
let lcd_clk = gpiob.pb0.into_alternate();
let lcd_miso = NoMiso {};
let lcd_mosi = gpioa.pa10.into_alternate().internal_pull_up(true);
let lcd_dc = gpiob.pb1.into_push_pull_output();
let lcd_cs = gpiob.pb2.into_push_pull_output();
let mode = Mode {
polarity: Polarity::IdleLow,
phase: Phase::CaptureOnFirstTransition,
};
let lcd_spi = dp
.SPI5
.spi((lcd_clk, lcd_miso, lcd_mosi), mode, 2.MHz(), &clocks);
let spi_iface = SPIInterface::new(lcd_spi, lcd_dc, lcd_cs);
let dummy_reset = DummyOutputPin::default();
let mut delay = dp.TIM1.delay_us(&clocks);
let mut lcd = Ili9341::new(
spi_iface,
dummy_reset,
&mut delay,
Orientation::PortraitFlipped,
DisplaySize240x320,
)
.unwrap();
// Create a new character style
let style = MonoTextStyle::new(&FONT_6X10, Rgb565::RED);
// Create a text at position (20, 30) and draw it using the previously defined style
Text::with_alignment(
"First line\nSecond line",
Point::new(20, 30),
style,
Alignment::Center,
)
.draw(&mut lcd)
.unwrap();
(Shared {}, Local {}, init::Monotonics())
}
#[idle(local = [])]
fn idle(cx: idle::Context) -> ! {
loop {
cortex_m::asm::nop();
}
}
}