demo: uart tx for v003

examples/ch32v003/src/bin/uart_tx.rs

@@ -0,0 +1,35 @@
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+use hal::delay::Delay;
+use hal::gpio::{Level, Output};
+use hal::println;
+use hal::usart::UartTx;
+use qingke::riscv;
+use {ch32_hal as hal, panic_halt as _};
+
+#[qingke_rt::entry]
+fn main() -> ! {
+    hal::debug::SDIPrint::enable();
+    let mut config = hal::Config::default();
+    config.rcc = hal::rcc::Config::SYSCLK_FREQ_48MHZ_HSE;
+    let p = hal::init(config);
+
+    let mut uart = UartTx::new_blocking(p.USART1, p.PC0, Default::default()).unwrap();
+
+    println!("dev init ok");
+
+    uart.blocking_write(b"Hello, world!\r\n").unwrap();
+
+    let mut delay = Delay;
+
+    let mut led = Output::new(p.PD6, Level::Low, Default::default());
+    loop {
+        led.toggle();
+
+        uart.blocking_write(b"Hello, world!\r\n").unwrap();
+
+        delay.delay_ms(1000);
+    }
+}