locking impl
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004a285999
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5d8f3e1db9
1 changed files with 17 additions and 15 deletions
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@ -9,6 +9,7 @@ use panic_halt as _;
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#[rtic::app(device = stm32f1::stm32f103, peripherals = true)]
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mod app {
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use cortex_m::singleton;
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use stm32f1xx_hal::{dma, gpio, pac, prelude::*, serial, timer};
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use systick_monotonic::Systick;
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@ -18,8 +19,7 @@ mod app {
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#[shared]
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struct Shared {
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#[lock_free]
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buffer: [u8; 256],
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buffer: Option<&'static mut [u8; 512]>,
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}
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#[local]
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@ -64,16 +64,13 @@ mod app {
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gpioa.pa10, //.into_pull_up_input(&mut gpioa.crh),
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),
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&mut afio.mapr,
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serial::Config {
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baudrate: 250_000.bps(),
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..Default::default()
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},
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250_000.bps(),
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&clocks,
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);
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(
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Shared {
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buffer: [0b01010101; 256],
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buffer: Some(singleton!(: [u8; 512] = [0b01010101; 512]).unwrap()),
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},
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Local {
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tx: Some(serial.tx.with_dma(dma1.4)),
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@ -89,20 +86,25 @@ mod app {
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)
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}
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#[idle(local = [tx, delay_us, led], shared = [&buffer])]
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fn idle(cx: idle::Context) -> ! {
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#[idle(local = [tx, delay_us, led], shared = [buffer])]
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fn idle(mut cx: idle::Context) -> ! {
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let mut tx = cx.local.tx.take().unwrap();
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loop {
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let xfer = tx.write(cx.shared.buffer);
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tx = (cx.shared.buffer).lock(|buffer| {
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let buf = buffer.take().unwrap();
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let xfer = tx.write(buf);
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cx.local.delay_us.delay(1.secs());
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cx.local.led.set_high();
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cx.local.delay_us.delay(1.secs());
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cx.local.led.set_high();
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cx.local.delay_us.delay(1.secs());
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cx.local.led.set_low();
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cx.local.delay_us.delay(1.secs());
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cx.local.led.set_low();
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(_, tx) = xfer.wait();
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let (buf, tx) = xfer.wait();
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buffer.replace(buf);
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tx
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});
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}
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}
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}
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