97 lines
2.1 KiB
Rust
97 lines
2.1 KiB
Rust
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#![no_std]
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#![no_main]
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#![feature(trait_alias)]
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#![feature(min_type_alias_impl_trait)]
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#![feature(impl_trait_in_bindings)]
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#![feature(type_alias_impl_trait)]
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#![allow(incomplete_features)]
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#[path = "../example_common.rs"]
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mod example_common;
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use core::fmt::Write;
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use cortex_m_rt::entry;
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use embassy::executor::Executor;
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use embassy::time::Clock;
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use embassy::util::Forever;
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use embassy_stm32::usart::{Config, Uart};
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use example_common::*;
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use heapless::String;
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use stm32l4::stm32l4x5 as pac;
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#[embassy::task]
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async fn main_task() {
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let mut p = embassy_stm32::init(Default::default());
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let config = Config::default();
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let mut usart = Uart::new(p.UART4, p.PA1, p.PA0, config);
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for n in 0u32.. {
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let mut s: String<128> = String::new();
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core::write!(&mut s, "Hello DMA World {}!\r\n", n).unwrap();
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usart
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.write_dma(&mut p.DMA1_3, s.as_bytes())
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.await
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.unwrap();
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info!("wrote DMA");
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}
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}
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struct ZeroClock;
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impl Clock for ZeroClock {
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fn now(&self) -> u64 {
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0
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}
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}
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static EXECUTOR: Forever<Executor> = Forever::new();
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#[entry]
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fn main() -> ! {
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info!("Hello World!");
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let pp = pac::Peripherals::take().unwrap();
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pp.DBGMCU.cr.modify(|_, w| {
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w.dbg_sleep().set_bit();
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w.dbg_standby().set_bit();
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w.dbg_stop().set_bit()
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});
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pp.RCC.ahb1enr.modify(|_, w| {
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unsafe {
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w.bits( 0x07 );
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}
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w
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//w.dmamuxen().set_bit();
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//w.dma1en().set_bit();
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//w.dma2en().set_bit();
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//w
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});
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pp.RCC.ahb2enr.modify(|_, w| {
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w.gpioaen().set_bit();
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w.gpioben().set_bit();
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w.gpiocen().set_bit();
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w.gpioden().set_bit();
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w.gpioeen().set_bit();
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w.gpiofen().set_bit();
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w
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});
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pp.RCC.apb2enr.modify(|_, w| {
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w.syscfgen().set_bit();
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w
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});
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unsafe { embassy::time::set_clock(&ZeroClock) };
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let executor = EXECUTOR.put(Executor::new());
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executor.run(|spawner| {
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unwrap!(spawner.spawn(main_task()));
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})
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}
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