jmm/bluepill-rust-blinky
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

use const declarations

Browse source
This commit is contained in:
Jörn-Michael Miehe 2024-03-22 00:11:17 +00:00
parent 75002d4bdc
commit e3b9f7ceb0
2 changed files with 14 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
bluepill-rs/src/dmx.rs
View file

@ -1,13 +1,14 @@
use cortex_m::singleton;
use stm32f1xx_hal::{dma, pac, prelude::*, rcc, serial};
type _TxDma = dma::TxDma<serial::Tx<pac::USART1>, dma::dma1::C4>;
type _DMXUniverse<const DMX_LEN: usize> = &'static mut [u8; DMX_LEN];
type _DMXTransfer<const DMX_LEN: usize> = dma::Transfer<dma::R, _DMXUniverse<DMX_LEN>, _TxDma>;
const DMX_LEN_MAX: usize = 512;
type TxDma = dma::TxDma<serial::Tx<pac::USART1>, dma::dma1::C4>;
type DMXUniverse<const DMX_LEN: usize> = &'static mut [u8; DMX_LEN];
type DMXTransfer<const DMX_LEN: usize> = dma::Transfer<dma::R, DMXUniverse<DMX_LEN>, TxDma>;
pub enum DMX<const DMX_LEN: usize = 512> {
Idle(Option<_TxDma>, Option<_DMXUniverse<DMX_LEN>>),
Busy(Option<_DMXTransfer<DMX_LEN>>),
Idle(Option<TxDma>, Option<DMXUniverse<DMX_LEN>>),
Busy(Option<DMXTransfer<DMX_LEN>>),
}
impl<const DMX_LEN: usize> DMX<DMX_LEN> {
@ -24,7 +25,7 @@ impl<const DMX_LEN: usize> DMX<DMX_LEN> {
Self::Idle(Some(serial.tx.with_dma(channel)), None)
}
pub fn send(&mut self, data: &[u8; DMX_LEN]) {
pub fn send(&mut self, data: &[u8]) {
if let Self::Busy(_) = self {
self.wait();
}
@ -34,12 +35,12 @@ impl<const DMX_LEN: usize> DMX<DMX_LEN> {
};
let txbuffer = txbuffer.take().unwrap_or_else(|| {
let foo = singleton!(: [u8; 512] = [0u8; 512]).unwrap();
let foo = singleton!(: [u8; DMX_LEN_MAX] = [0u8; DMX_LEN_MAX]).unwrap();
(&mut foo[..DMX_LEN]).try_into().unwrap()
});
let tx = tx.take().unwrap();
txbuffer.copy_from_slice(data);
txbuffer.copy_from_slice(&data[..DMX_LEN]);
*self = Self::Busy(Some(tx.write(txbuffer)));
}

9
bluepill-rs/src/main.rs
View file

@ -11,11 +11,12 @@ 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;
use crate::dmx::DMX;
const DMX_LEN: usize = 512;
// A monotonic timer to enable scheduling in RTIC
#[monotonic(binds = SysTick, default = true)]
@ -23,13 +24,13 @@ mod app {
#[shared]
struct Shared {
buffer: &'static mut [u8; 512],
buffer: &'static mut [u8],
delay_us: timer::DelayUs<pac::TIM2>,
}
#[local]
struct Local {
dmx: DMX<512>,
dmx: DMX<DMX_LEN>,
led: gpio::gpioc::PC13<gpio::Output>,
}
@ -77,7 +78,7 @@ mod app {
(
Shared {
buffer: singleton!(: [u8; 512] = [0b01010101; 512]).unwrap(),
buffer: singleton!(: [u8; DMX_LEN] = [0b01010101; DMX_LEN]).unwrap(),
// Configure timer
delay_us: cx.device.TIM2.delay_us(&clocks),