132 lines
3.9 KiB
Rust
132 lines
3.9 KiB
Rust
#![deny(unsafe_code)]
|
|
#![no_std]
|
|
#![no_main]
|
|
|
|
// mod i2c_reg_slave;
|
|
// mod i2c_slave;
|
|
mod dmx;
|
|
|
|
// extern crate panic_halt;
|
|
extern crate panic_semihosting;
|
|
|
|
#[rtic::app(device = stm32f1xx_hal::pac, dispatchers = [SPI1, SPI2, SPI3])]
|
|
mod app {
|
|
use crate::dmx::DMX;
|
|
use cortex_m::singleton;
|
|
use stm32f1xx_hal::{gpio, pac, prelude::*, serial, timer};
|
|
use systick_monotonic::Systick;
|
|
|
|
const DMX_LEN: usize = 512;
|
|
|
|
// A monotonic timer to enable scheduling in RTIC
|
|
#[monotonic(binds = SysTick, default = true)]
|
|
type MyMono = Systick<100>; // 100 Hz / 10 ms granularity
|
|
|
|
#[shared]
|
|
struct Shared {
|
|
buffer: &'static mut [u8],
|
|
delay_us: timer::DelayUs<pac::TIM2>,
|
|
}
|
|
|
|
#[local]
|
|
struct Local {
|
|
dmx: DMX<DMX_LEN>,
|
|
led: gpio::gpioc::PC13<gpio::Output<gpio::PushPull>>,
|
|
int_led: gpio::gpiob::PB0<gpio::Output<gpio::OpenDrain>>,
|
|
}
|
|
|
|
#[init]
|
|
fn init(cx: init::Context) -> (Shared, Local, init::Monotonics) {
|
|
// Take ownership over the raw flash and rcc devices and convert them into the corresponding
|
|
// HAL structs
|
|
let mut flash = cx.device.FLASH.constrain();
|
|
let rcc = cx.device.RCC.constrain();
|
|
|
|
// Freeze the configuration of all the clocks in the system and store the frozen frequencies in
|
|
// `clocks`
|
|
let clocks = rcc
|
|
.cfgr
|
|
// hf external quartz frequency
|
|
.use_hse(8.MHz())
|
|
// system clock frequency
|
|
.sysclk(72.MHz())
|
|
.freeze(&mut flash.acr);
|
|
|
|
// Initialize the monotonic
|
|
let mono = Systick::new(cx.core.SYST, clocks.sysclk().to_Hz());
|
|
|
|
// Acquire the peripherals
|
|
let mut gpioa = cx.device.GPIOA.split();
|
|
let mut gpiob = cx.device.GPIOB.split();
|
|
let mut gpioc = cx.device.GPIOC.split();
|
|
|
|
let mut afio = cx.device.AFIO.constrain();
|
|
let dma1 = cx.device.DMA1.split();
|
|
|
|
cx.device.EXTI.imr.write(|w| w.mr1().set_bit());
|
|
|
|
let _ = gpiob.pb10.into_pull_up_input(&mut gpiob.crh);
|
|
|
|
// Serial config
|
|
let serial = serial::Serial::new(
|
|
cx.device.USART1,
|
|
(
|
|
gpioa.pa9.into_alternate_open_drain(&mut gpioa.crh),
|
|
gpioa.pa10, //.into_pull_up_input(&mut gpioa.crh),
|
|
),
|
|
&mut afio.mapr,
|
|
serial::Config::default(),
|
|
&clocks,
|
|
);
|
|
|
|
// rtic::pend(pac::Interrupt::DMA1_CHANNEL4); // ???
|
|
foo::spawn().unwrap();
|
|
|
|
(
|
|
Shared {
|
|
buffer: singleton!(: [u8; DMX_LEN] = [0b01010101; DMX_LEN]).unwrap(),
|
|
|
|
// Configure timer
|
|
delay_us: cx.device.TIM2.delay_us(&clocks),
|
|
},
|
|
Local {
|
|
dmx: DMX::new(serial, dma1.4, &clocks),
|
|
|
|
// Configure gpio C pin 13 as a push-pull output. The `crh` register is passed to the function
|
|
// in order to configure the port. For pins 0-7, crl should be passed instead.
|
|
led: gpioc
|
|
.pc13
|
|
.into_push_pull_output_with_state(&mut gpioc.crh, gpio::PinState::High),
|
|
|
|
int_led: gpiob
|
|
.pb0
|
|
.into_open_drain_output_with_state(&mut gpiob.crl, gpio::PinState::Low),
|
|
},
|
|
init::Monotonics(mono),
|
|
)
|
|
}
|
|
|
|
#[idle]
|
|
fn idle(_: idle::Context) -> ! {
|
|
loop {
|
|
rtic::export::wfi();
|
|
}
|
|
}
|
|
|
|
#[task(local = [dmx, led], shared = [&buffer, delay_us])]
|
|
fn foo(mut cx: foo::Context) {
|
|
cx.local.dmx.send(cx.shared.buffer);
|
|
|
|
cx.local.led.toggle();
|
|
cx.shared.delay_us.lock(|d| d.delay(1.secs()));
|
|
|
|
// cx.local.dmx.wait();
|
|
foo::spawn().unwrap();
|
|
}
|
|
|
|
#[task(binds=EXTI0, local = [int_led], shared = [delay_us])]
|
|
fn bar(mut cx: bar::Context) {
|
|
cx.local.int_led.toggle();
|
|
cx.shared.delay_us.lock(|d| d.delay(1.secs()));
|
|
}
|
|
}
|