112 lines
3.1 KiB
Rust
112 lines
3.1 KiB
Rust
//! Blinky button application for the REB1 board
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#![no_main]
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#![no_std]
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use core::cell::RefCell;
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use cortex_m::interrupt::Mutex;
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use cortex_m_rt::entry;
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use panic_rtt_target as _;
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use rtt_target::{rprintln, rtt_init_print};
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use va108xx_hal::{
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clock::{set_clk_div_register, FilterClkSel},
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gpio::{FilterType, InterruptEdge, PinsA},
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pac::{self, interrupt},
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prelude::*,
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time::Hertz,
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timer::{default_ms_irq_handler, set_up_ms_timer, IrqCfg},
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};
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use vorago_reb1::button::Button;
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use vorago_reb1::leds::Leds;
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static LEDS: Mutex<RefCell<Option<Leds>>> = Mutex::new(RefCell::new(None));
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static BUTTON: Mutex<RefCell<Option<Button>>> = Mutex::new(RefCell::new(None));
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#[derive(Debug, PartialEq)]
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pub enum PressMode {
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Toggle,
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Keep,
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}
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// You can change the press mode here
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const PRESS_MODE: PressMode = PressMode::Keep;
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#[entry]
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fn main() -> ! {
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rtt_init_print!();
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rprintln!("-- Vorago Button IRQ Example --");
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let mut dp = pac::Peripherals::take().unwrap();
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let pinsa = PinsA::new(&mut dp.SYSCONFIG, Some(dp.IOCONFIG), dp.PORTA);
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let edge_irq = match PRESS_MODE {
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PressMode::Toggle => InterruptEdge::HighToLow,
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PressMode::Keep => InterruptEdge::BothEdges,
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};
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// Configure an edge interrupt on the button and route it to interrupt vector 15
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let mut button = Button::new(pinsa.pa11.into_floating_input()).edge_irq(
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edge_irq,
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IrqCfg::new(pac::interrupt::OC15, true, true),
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Some(&mut dp.SYSCONFIG),
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Some(&mut dp.IRQSEL),
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);
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if PRESS_MODE == PressMode::Toggle {
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// This filter debounces the switch for edge based interrupts
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button = button.filter_type(FilterType::FilterFourClockCycles, FilterClkSel::Clk1);
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set_clk_div_register(
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&mut dp.SYSCONFIG,
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FilterClkSel::Clk1,
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Hertz::from(50.khz()).0,
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);
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}
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set_up_ms_timer(
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IrqCfg::new(pac::Interrupt::OC0, true, true),
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&mut dp.SYSCONFIG,
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Some(&mut dp.IRQSEL),
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50.mhz(),
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dp.TIM0,
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);
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let mut leds = Leds::new(
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pinsa.pa10.into_push_pull_output(),
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pinsa.pa7.into_push_pull_output(),
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pinsa.pa6.into_push_pull_output(),
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);
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for led in leds.iter_mut() {
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led.off();
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}
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// Make both button and LEDs accessible from the IRQ handler as well
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cortex_m::interrupt::free(|cs| {
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LEDS.borrow(cs).replace(Some(leds));
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BUTTON.borrow(cs).replace(Some(button));
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});
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loop {}
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}
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#[interrupt]
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fn OC0() {
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default_ms_irq_handler();
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}
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#[interrupt]
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fn OC15() {
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cortex_m::interrupt::free(|cs| {
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if PRESS_MODE == PressMode::Toggle {
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if let Some(ref mut leds) = LEDS.borrow(cs).borrow_mut().as_deref_mut() {
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leds[0].toggle();
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}
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} else {
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if let (Some(ref mut leds), Some(ref button)) = (
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LEDS.borrow(cs).borrow_mut().as_deref_mut(),
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BUTTON.borrow(cs).borrow().as_ref(),
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) {
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if button.released() {
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leds[0].off();
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} else {
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leds[0].on();
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}
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}
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}
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});
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}
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