refactor(faderboard): touch module

This commit is contained in:
Luca 2024-07-16 04:00:03 +02:00
parent f85db1b754
commit 7ce1529e88
2 changed files with 203 additions and 63 deletions

View File

@ -11,20 +11,22 @@ use panic_halt as _;
use stm32f0xx_hal as hal;
use hal::adc::Adc;
use hal::pac::Peripherals;
use hal::delay::Delay;
use hal::pac::{CorePeripherals, Peripherals};
use hal::prelude::*;
use hal::pwm;
use hal::usb::{Peripheral, UsbBus};
use touch::Touch;
use touch::{SysCfg, Touch};
use usb::Usb;
#[entry]
fn main() -> ! {
let mut p = Peripherals::take().unwrap();
let cp = CorePeripherals::take().unwrap();
let touch = Touch::new(p.SYSCFG, p.EXTI, &mut p.RCC);
let sys_cfg = SysCfg::new(p.SYSCFG, &mut p.RCC);
let mut rcc = p
.RCC
@ -133,7 +135,10 @@ fn main() -> ! {
let mut _pwm6 = pwm::tim1(p.TIM1, pwm6_pin, &mut rcc, 250.khz());
let (mut _pwm8, mut _pwm7) = pwm::tim15(p.TIM15, (pwm8_pin, pwm7_pin), &mut rcc, 250.khz());
touch.setup();
let delay = Delay::new(cp.SYST, &mut rcc);
let touch = Touch::new(sys_cfg, p.EXTI, delay.clone());
touch.enable();
loop {
usb.poll();

View File

@ -1,79 +1,214 @@
use core::cell::RefCell;
use cortex_m::interrupt::{CriticalSection, Mutex};
use stm32f0xx_hal::delay::Delay;
use stm32f0xx_hal::pac::{interrupt, Interrupt, EXTI, RCC, SYSCFG};
pub struct Touch {
exti: EXTI,
static GLOBALS: Mutex<RefCell<Option<Globals>>> = Mutex::new(RefCell::new(None));
pub struct SysCfg {
syscfg: SYSCFG,
}
impl Touch {
pub fn new(syscfg: SYSCFG, exti: EXTI, rcc: &mut RCC) -> Self {
cortex_m::interrupt::free(|_| rcc.apb2enr.modify(|_, w| w.syscfgen().set_bit()));
impl SysCfg {
pub fn new(syscfg: SYSCFG, rcc: &mut RCC) -> Self {
cortex_m::interrupt::free(|_| {
rcc.apb2enr.modify(|_, w| w.syscfgen().set_bit());
});
Self { exti, syscfg }
Self { syscfg }
}
pub fn setup(&self) {
cortex_m::interrupt::free(|_| {
self.syscfg.exticr1.modify(|_, w| {
w.exti0().pb0();
w.exti1().pb1();
w.exti2().pb2();
w
});
self.syscfg.exticr3.modify(|_, w| {
w.exti10().pb10();
w.exti11().pb11();
w
});
self.syscfg.exticr4.modify(|_, w| {
w.exti13().pc13();
w.exti14().pc14();
w.exti15().pc15();
w
});
fn take(self) -> SYSCFG {
self.syscfg
}
}
self.exti.imr.modify(|_, w| {
w.mr0().unmasked();
w.mr1().unmasked();
w.mr2().unmasked();
w.mr10().unmasked();
w.mr11().unmasked();
w.mr13().unmasked();
w.mr14().unmasked();
w.mr15().unmasked();
w
});
pub struct Touch;
self.exti.rtsr.modify(|_, w| {
w.tr0().enabled();
w.tr1().enabled();
w.tr2().enabled();
w.tr10().enabled();
w.tr11().enabled();
w.tr13().enabled();
w.tr14().enabled();
w.tr15().enabled();
w
});
impl Touch {
pub fn new(sys_cfg: SysCfg, exti: EXTI, delay: Delay) -> Self {
let _ = cortex_m::interrupt::free(|cs| {
GLOBALS
.borrow(cs)
.replace(Some(Globals::new(sys_cfg.take(), exti, delay)))
});
unsafe {
cortex_m::peripheral::NVIC::unmask(Interrupt::EXTI0_1);
cortex_m::peripheral::NVIC::unmask(Interrupt::EXTI2_3);
cortex_m::peripheral::NVIC::unmask(Interrupt::EXTI4_15);
}
Self
}
cortex_m::peripheral::NVIC::unpend(Interrupt::EXTI0_1);
cortex_m::peripheral::NVIC::unpend(Interrupt::EXTI2_3);
cortex_m::peripheral::NVIC::unpend(Interrupt::EXTI4_15);
pub fn enable(&self) {
cortex_m::interrupt::free(|cs| {
GLOBALS
.borrow(cs)
.borrow()
.as_ref()
.expect("GLOBALS should not be None")
.setup_interrupts(cs)
});
}
}
#[interrupt]
fn EXTI0_1() {}
struct Globals {
syscfg: SYSCFG,
exti: EXTI,
/// Currently only used to ensure SysTick timer is set up correctly
#[allow(dead_code)]
delay: Delay,
}
impl Globals {
fn new(syscfg: SYSCFG, exti: EXTI, delay: Delay) -> Self {
Self {
syscfg,
exti,
delay,
}
}
fn setup_interrupts(&self, _cs: &CriticalSection) {
self.syscfg.exticr1.modify(|_, w| {
w.exti0().pb0();
w.exti1().pb1();
w.exti2().pb2();
w
});
self.syscfg.exticr3.modify(|_, w| {
w.exti10().pb10();
w.exti11().pb11();
w
});
self.syscfg.exticr4.modify(|_, w| {
w.exti13().pc13();
w.exti14().pc14();
w.exti15().pc15();
w
});
self.exti.imr.modify(|_, w| {
w.mr0().unmasked();
w.mr1().unmasked();
w.mr2().unmasked();
w.mr10().unmasked();
w.mr11().unmasked();
w.mr13().unmasked();
w.mr14().unmasked();
w.mr15().unmasked();
w
});
self.exti.rtsr.modify(|_, w| {
w.tr0().enabled();
w.tr1().enabled();
w.tr2().enabled();
w.tr10().enabled();
w.tr11().enabled();
w.tr13().enabled();
w.tr14().enabled();
w.tr15().enabled();
w
});
unsafe {
cortex_m::peripheral::NVIC::unmask(Interrupt::EXTI0_1);
cortex_m::peripheral::NVIC::unmask(Interrupt::EXTI2_3);
cortex_m::peripheral::NVIC::unmask(Interrupt::EXTI4_15);
}
cortex_m::peripheral::NVIC::unpend(Interrupt::EXTI0_1);
cortex_m::peripheral::NVIC::unpend(Interrupt::EXTI2_3);
cortex_m::peripheral::NVIC::unpend(Interrupt::EXTI4_15);
}
}
#[interrupt]
fn EXTI2_3() {}
fn EXTI0_1() {
cortex_m::interrupt::free(|cs| {
if let Some(globals) = GLOBALS.borrow(cs).borrow().as_ref() {
let pr = &globals.exti.pr;
if pr.read().pif0().is_pending() {
pr.write(|w| w.pif0().set_bit());
}
if pr.read().pif1().is_pending() {
pr.write(|w| w.pif1().set_bit());
}
}
});
}
#[interrupt]
fn EXTI4_15() {}
fn EXTI2_3() {
cortex_m::interrupt::free(|cs| {
if let Some(globals) = GLOBALS.borrow(cs).borrow().as_ref() {
let pr = &globals.exti.pr;
if pr.read().pif2().is_pending() {
pr.write(|w| w.pif2().set_bit());
}
if pr.read().pif3().is_pending() {
pr.write(|w| w.pif3().set_bit());
}
}
});
}
#[interrupt]
fn EXTI4_15() {
cortex_m::interrupt::free(|cs| {
if let Some(globals) = GLOBALS.borrow(cs).borrow().as_ref() {
let pr = &globals.exti.pr;
if pr.read().pif4().is_pending() {
pr.write(|w| w.pif4().set_bit());
}
if pr.read().pif5().is_pending() {
pr.write(|w| w.pif5().set_bit());
}
if pr.read().pif6().is_pending() {
pr.write(|w| w.pif6().set_bit());
}
if pr.read().pif7().is_pending() {
pr.write(|w| w.pif7().set_bit());
}
if pr.read().pif8().is_pending() {
pr.write(|w| w.pif8().set_bit());
}
if pr.read().pif9().is_pending() {
pr.write(|w| w.pif9().set_bit());
}
if pr.read().pif10().is_pending() {
pr.write(|w| w.pif10().set_bit());
}
if pr.read().pif11().is_pending() {
pr.write(|w| w.pif11().set_bit());
}
if pr.read().pif12().is_pending() {
pr.write(|w| w.pif12().set_bit());
}
if pr.read().pif13().is_pending() {
pr.write(|w| w.pif13().set_bit());
}
if pr.read().pif14().is_pending() {
pr.write(|w| w.pif14().set_bit());
}
if pr.read().pif15().is_pending() {
pr.write(|w| w.pif15().set_bit());
}
}
});
}