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#![no_std]
#![no_main]
#![feature(trait_alias)]
#![feature(min_type_alias_impl_trait)]
#![feature(impl_trait_in_bindings)]
#![feature(type_alias_impl_trait)]
#![allow(incomplete_features)]
#[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 embassy_stm32::usart::{Config, Uart};
use example_common::*;
use heapless::String;
use stm32l4::stm32l4x5 as pac;
use embassy_stm32::dma_traits::NoDma;
use embassy_traits::uart::Write as AsyncWrite;
#[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_3, 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() -> ! {
info!("Hello World!");
let pp = pac::Peripherals::take().unwrap();
pp.DBGMCU.cr.modify(|_, w| {
w.dbg_sleep().set_bit();
w.dbg_standby().set_bit();
w.dbg_stop().set_bit()
});
pp.RCC.ahb1enr.modify(|_, w| {
unsafe {
w.bits( 0x07 );
}
w
//w.dmamuxen().set_bit();
//w.dma1en().set_bit();
//w.dma2en().set_bit();
//w
});
pp.RCC.ahb2enr.modify(|_, w| {
w.gpioaen().set_bit();
w.gpioben().set_bit();
w.gpiocen().set_bit();
w.gpioden().set_bit();
w.gpioeen().set_bit();
w.gpiofen().set_bit();
w
});
pp.RCC.apb2enr.modify(|_, w| {
w.syscfgen().set_bit();
w
});
unsafe { embassy::time::set_clock(&ZeroClock) };
let executor = EXECUTOR.put(Executor::new());
executor.run(|spawner| {
unwrap!(spawner.spawn(main_task()));
})
}
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