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#![no_main]
#![no_std]
// set the panic handler
use panic_halt as _;
use core::convert::Infallible;
use embedded_hal::digital::v2::{InputPin, OutputPin};
use generic_array::typenum::{U4, U6};
use keyberon::action::{k, l, m, Action, Action::*};
use keyberon::debounce::Debouncer;
use keyberon::impl_heterogenous_array;
use keyberon::key_code::KbHidReport;
use keyberon::key_code::KeyCode::{self, *};
use keyberon::layout::Layout;
use keyberon::matrix::{Matrix, PressedKeys};
use rtic::app;
use stm32f0xx_hal::gpio::{gpioa, gpiob, Input, Output, PullUp, PushPull};
use stm32f0xx_hal::prelude::*;
use stm32f0xx_hal::usb;
use stm32f0xx_hal::{stm32, timers};
use usb_device::bus::UsbBusAllocator;
use usb_device::class::UsbClass as _;
type UsbClass = keyberon::Class<'static, usb::UsbBusType, ()>;
type UsbDevice = keyberon::Device<'static, usb::UsbBusType>;
pub struct Cols(
gpioa::PA15<Input<PullUp>>,
gpiob::PB3<Input<PullUp>>,
gpiob::PB4<Input<PullUp>>,
gpiob::PB5<Input<PullUp>>,
gpiob::PB8<Input<PullUp>>,
gpiob::PB9<Input<PullUp>>,
);
impl_heterogenous_array! {
Cols,
dyn InputPin<Error = Infallible>,
U6,
[0, 1, 2, 3, 4, 5]
}
pub struct Rows(
gpiob::PB0<Output<PushPull>>,
gpiob::PB1<Output<PushPull>>,
gpiob::PB2<Output<PushPull>>,
gpiob::PB10<Output<PushPull>>,
);
impl_heterogenous_array! {
Rows,
dyn OutputPin<Error = Infallible>,
U4,
[0, 1, 2, 3]
}
const CUT: Action = m(&[LShift, Delete]);
const COPY: Action = m(&[LCtrl, Insert]);
const PASTE: Action = m(&[LShift, Insert]);
const L2_ENTER: Action = HoldTap {
timeout: 200,
hold: &l(2),
tap: &k(Enter),
};
const L1_SP: Action = HoldTap {
timeout: 200,
hold: &l(1),
tap: &k(Space),
};
const CSPACE: Action = m(&[LCtrl, Space]);
macro_rules! s {
($k:ident) => {
m(&[LShift, $k])
};
}
macro_rules! a {
($k:ident) => {
m(&[RAlt, $k])
};
}
// The 13th column is the hardware button of the development board,
// thus all the column is activated when the button is pushed. Because
// of that, only one action is defined in the 13th column.
#[rustfmt::skip]
pub static LAYERS: keyberon::layout::Layers = &[
&[
&[k(Tab), k(Q), k(W), k(E), k(R), k(T), k(Y), k(U), k(I), k(O), k(P), k(LBracket)],
&[k(RBracket),k(A), k(S), k(D), k(F), k(G), k(H), k(J), k(K), k(L), k(SColon),k(Quote) ],
&[k(Equal), k(Z), k(X), k(C), k(V), k(B), k(N), k(M), k(Comma),k(Dot), k(Slash), k(Bslash) ],
&[Trans, Trans,k(LGui),k(LAlt),L1_SP,k(LCtrl),k(RShift),L2_ENTER,k(RAlt),k(BSpace),Trans, Trans ],
], &[
&[Trans, k(Pause),Trans, k(PScreen),Trans, Trans,Trans, Trans, k(Delete),Trans, Trans, Trans ],
&[Trans, Trans, k(NumLock),k(Insert), k(Escape),Trans,k(CapsLock),k(Left),k(Down), k(Up), k(Right),Trans ],
&[k(NonUsBslash),k(Undo), CUT, COPY, PASTE, Trans,Trans, k(Home),k(PgDown),k(PgUp),k(End), Trans ],
&[Trans, Trans, Trans, Trans, Trans, Trans,Trans, Trans, Trans, Trans, Trans, Trans ],
], &[
&[s!(Grave),s!(Kb1),s!(Kb2),s!(Kb3),s!(Kb4),s!(Kb5),s!(Kb6),s!(Kb7),s!(Kb8),s!(Kb9),s!(Kb0),s!(Minus)],
&[ k(Grave), k(Kb1), k(Kb2), k(Kb3), k(Kb4), k(Kb5), k(Kb6), k(Kb7), k(Kb8), k(Kb9), k(Kb0), k(Minus)],
&[a!(Grave),a!(Kb1),a!(Kb2),a!(Kb3),a!(Kb4),a!(Kb5),a!(Kb6),a!(Kb7),a!(Kb8),a!(Kb9),a!(Kb0),a!(Minus)],
&[Trans, Trans, Trans, Trans, CSPACE, Trans, Trans, Trans, Trans, Trans, Trans, Trans ],
], &[
&[k(F1),k(F2),k(F3),k(F4),k(F5),k(F6),k(F7),k(F8),k(F9),k(F10),k(F11),k(F12)],
&[Trans,Trans,Trans,Trans,Trans,Trans,Trans,Trans,Trans,Trans, Trans, Trans ],
&[Trans,Trans,Trans,Trans,Trans,Trans,Trans,Trans,Trans,Trans, Trans, Trans ],
&[Trans,Trans,Trans,Trans,Trans,Trans,Trans,Trans,Trans,Trans, Trans, Trans ],
],
];
#[app(device = stm32f0xx_hal::stm32, peripherals = true)]
const APP: () = {
struct Resources {
usb_dev: UsbDevice,
usb_class: UsbClass,
matrix: Matrix<Cols, Rows>,
debouncer: Debouncer<PressedKeys<U4, U6>>,
layout: Layout,
timer: timers::Timer<stm32::TIM3>,
}
#[init]
fn init(mut c: init::Context) -> init::LateResources {
static mut USB_BUS: Option<UsbBusAllocator<usb::UsbBusType>> = None;
let mut rcc = c
.device
.RCC
.configure()
.hsi48()
.enable_crs(c.device.CRS)
.sysclk(48.mhz())
.pclk(24.mhz())
.freeze(&mut c.device.FLASH);
let gpioa = c.device.GPIOA.split(&mut rcc);
let gpiob = c.device.GPIOB.split(&mut rcc);
let usb = usb::Peripheral {
usb: c.device.USB,
pin_dm: gpioa.pa11,
pin_dp: gpioa.pa12,
};
*USB_BUS = Some(usb::UsbBusType::new(usb));
let usb_bus = USB_BUS.as_ref().unwrap();
let usb_class = keyberon::new_class(usb_bus, ());
let usb_dev = keyberon::new_device(usb_bus);
let mut timer = timers::Timer::tim3(c.device.TIM3, 1.khz(), &mut rcc);
timer.listen(timers::Event::TimeOut);
let pa15 = gpioa.pa15;
let matrix = cortex_m::interrupt::free(move |cs| {
Matrix::new(
Cols(
pa15.into_pull_up_input(cs),
gpiob.pb3.into_pull_up_input(cs),
gpiob.pb4.into_pull_up_input(cs),
gpiob.pb5.into_pull_up_input(cs),
gpiob.pb8.into_pull_up_input(cs),
gpiob.pb9.into_pull_up_input(cs),
),
Rows(
gpiob.pb0.into_push_pull_output(cs),
gpiob.pb1.into_push_pull_output(cs),
gpiob.pb2.into_push_pull_output(cs),
gpiob.pb10.into_push_pull_output(cs),
),
)
});
init::LateResources {
usb_dev,
usb_class,
timer,
debouncer: Debouncer::new(PressedKeys::default(), PressedKeys::default(), 5),
matrix: matrix.unwrap(),
layout: Layout::new(LAYERS),
}
}
#[task(binds = USB, priority = 2, resources = [usb_dev, usb_class])]
fn usb_rx(c: usb_rx::Context) {
if c.resources.usb_dev.poll(&mut [c.resources.usb_class]) {
c.resources.usb_class.poll();
}
}
#[task(binds = TIM3, priority = 1, resources = [usb_class, matrix, debouncer, layout, timer])]
fn tick(mut c: tick::Context) {
c.resources.timer.wait().ok();
for event in c
.resources
.debouncer
.events(c.resources.matrix.get().unwrap())
{
send_report(c.resources.layout.event(event), &mut c.resources.usb_class);
}
send_report(c.resources.layout.tick(), &mut c.resources.usb_class);
}
};
fn send_report(iter: impl Iterator<Item = KeyCode>, usb_class: &mut resources::usb_class<'_>) {
use rtic::Mutex;
let report: KbHidReport = iter.collect();
if usb_class.lock(|k| k.device_mut().set_keyboard_report(report.clone())) {
while let Ok(0) = usb_class.lock(|k| k.write(report.as_bytes())) {}
}
}
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