rename examples

embassy-stm32f4-examples/src/serial.rs

@@ -0,0 +1,64 @@
+#![no_std]
+#![no_main]
+#![feature(trait_alias)]
+#![feature(type_alias_impl_trait)]
+
+// extern crate panic_halt;
+
+use cortex_m::singleton;
+use cortex_m_rt::entry;
+use embassy::executor::{task, Executor};
+use embassy::util::Forever;
+use embassy_stm32f4::interrupt;
+use embassy_stm32f4::serial;
+use stm32f4xx_hal::stm32;
+use stm32f4xx_hal::{prelude::*, serial::config};
+
+#[task]
+async fn run(dp: stm32::Peripherals, cp: cortex_m::Peripherals) {
+    // https://gist.github.com/thalesfragoso/a07340c5df6eee3b04c42fdc69ecdcb1
+    let gpioa = dp.GPIOA.split();
+    let rcc = dp.RCC.constrain();
+
+    let clocks = rcc
+        .cfgr
+        .use_hse(16.mhz())
+        .sysclk(48.mhz())
+        .pclk1(24.mhz())
+        .freeze();
+
+    let mut serial = serial::Serial::new(
+        gpioa.pa9.into_alternate_af7(),
+        gpioa.pa10.into_alternate_af7(),
+        interrupt::take!(DMA2_STREAM2),
+        interrupt::take!(DMA2_STREAM7),
+        interrupt::take!(USART1),
+        dp.DMA2,
+        dp.USART1,
+        config::Parity::ParityNone,
+        9600.bps(),
+        clocks,
+    );
+
+    let buf = singleton!(: [u8; 30] = [0; 30]).unwrap();
+
+    buf[5] = 0x01;
+
+    serial.send(buf).await;
+}
+
+static EXECUTOR: Forever<Executor> = Forever::new();
+
+#[entry]
+fn main() -> ! {
+    let dp = stm32::Peripherals::take().unwrap();
+    let cp = cortex_m::peripheral::Peripherals::take().unwrap();
+
+    let executor = EXECUTOR.put(Executor::new(cortex_m::asm::sev));
+    executor.spawn(run(dp, cp));
+
+    loop {
+        executor.run();
+        cortex_m::asm::wfe();
+    }
+}