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stm32/examples: cleanup L4

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This commit is contained in:
Dario Nieuwenhuis
2021-07-24 13:57:11 +02:00
parent 4899168534
commit 5b0ae5c25b
10 changed files with 100 additions and 279 deletions
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60
examples/stm32l4/src/bin/usart_dma.rs
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@ -9,46 +9,17 @@
#[path = "../example_common.rs"]
mod example_common;
use core::fmt::Write;
use cortex_m_rt::entry;
use embassy::executor::Executor;
use embassy::time::Clock;
use embassy::util::Forever;
use defmt::panic;
use embassy::executor::Spawner;
use embassy_stm32::dma::NoDma;
use embassy_stm32::pac;
use embassy_stm32::usart::{Config, Uart};
use embassy_stm32::{pac, Peripherals};
use embassy_traits::uart::Write as _;
use example_common::*;
use heapless::String;
#[embassy::task]
async fn main_task() {
let p = embassy_stm32::init(Default::default());
let config = Config::default();
let mut usart = Uart::new(p.UART4, p.PA1, p.PA0, p.DMA1_CH3, NoDma, config);
for n in 0u32.. {
let mut s: String<128> = String::new();
core::write!(&mut s, "Hello DMA World {}!\r\n", n).unwrap();
usart.write(s.as_bytes()).await.ok();
info!("wrote DMA");
}
}
struct ZeroClock;
impl Clock for ZeroClock {
fn now(&self) -> u64 {
0
}
}
static EXECUTOR: Forever<Executor> = Forever::new();
#[entry]
fn main() -> ! {
#[embassy::main]
async fn main(_spawner: Spawner, p: Peripherals) {
info!("Hello World!");
unsafe {
@ -57,19 +28,18 @@ fn main() -> ! {
w.set_dbg_standby(true);
w.set_dbg_stop(true);
});
pac::RCC.ahb1enr().modify(|w| {
w.set_dmamux1en(true);
w.set_dma1en(true);
w.set_dma2en(true);
});
}
unsafe { embassy::time::set_clock(&ZeroClock) };
let config = Config::default();
let mut usart = Uart::new(p.UART4, p.PA1, p.PA0, p.DMA1_CH3, NoDma, config);
let executor = EXECUTOR.put(Executor::new());
for n in 0u32.. {
let mut s: String<128> = String::new();
core::write!(&mut s, "Hello DMA World {}!\r\n", n).unwrap();
executor.run(|spawner| {
unwrap!(spawner.spawn(main_task()));
})
info!("Writing...");
usart.write(s.as_bytes()).await.ok();
info!("wrote DMA");
}
}