changed main

examples/rtic_blinky.rs

@@ -40,7 +40,7 @@ const APP: () = {
         let now = cx.start; // the start time of the system
 
         // Schedule `toggle` to run 8e6 cycles (clock cycles) in the future
-        cx.schedule.toggle(now + 8_000_000.cycles()).unwrap();
+        cx.schedule.toggle(now +16_000_000.cycles()).unwrap();
 
         // power on GPIOA, RM0368 6.3.11
         device.RCC.ahb1enr.modify(|_, w| w.gpioaen().set_bit());

examples/rtt-pwm.rs

-//! cargo run --examples rtt-pwm
+//! cargo run --example rtt-pwm
 
 #![deny(unsafe_code)]
 #![deny(warnings)]

src/main.rs

+#![deny(unsafe_code)]
+#![deny(warnings)]
 #![no_std]
 #![no_main]
 
-// pick a panicking behavior
-use panic_halt as _; // you can put a breakpoint on `rust_begin_unwind` to catch panics
-// use panic_abort as _; // requires nightly
+// pick a panicking behavior// use panic_abort as _; // requires nightly
 // use panic_itm as _; // logs messages over ITM; requires ITM support
 // use panic_semihosting as _; // logs messages to the host stderr; requires a debugger
 
-use cortex_m::asm;
-use cortex_m_rt::entry;
 
-#[entry]
-fn main() -> ! {
-    asm::nop(); // To not have main optimize to abort in release mode, remove when you add code
+use panic_halt as _; // you can put a breakpoint on `rust_begin_unwind` to catch panics
+use rtt_target::{rprintln, rtt_init_print};
+
+
+use cortex_m::peripheral::DWT;
+use stm32f4xx_hal::stm32;
+
+//use cortex_m::asm;
+//use cortex_m_rt::entry;
+
+use rtic::cyccnt::{Instant, U32Ext as _};
+
+
+#[rtic::app(device = stm32f4xx_hal::stm32, monotonic = rtic::cyccnt::CYCCNT, peripherals = true)]
+const APP: () = {
+    struct Resources {
+        // late resources
+        GPIOA: stm32::GPIOA,
+    }
+
+    #[init(schedule = [toggle])]
+    fn init(cx: init::Context) -> init::LateResources {
+        rtt_init_print!();
+        rprintln!("init");
+
+        for i in 0..11 {
+            rprintln!("RTIC Says Hello, world {}!!", i);
+        }
+
+        let mut core = cx.core;
+        let device = cx.device;
+
+        
+        // Initialize (enable) the monotonic timer (CYCCNT)
+        core.DCB.enable_trace();
+        // required on Cortex-M7 devices that software lock the DWT (e.g. STM32F7)
+        DWT::unlock();
+        core.DWT.enable_cycle_counter();
+
+        // semantically, the monotonic timer is frozen at time "zero" during `init`
+        // NOTE do *not* call `Instant::now` in this context; it will return a nonsense value
+        let now = cx.start; // the start time of the system
 
+        // Schedule `toggle` to run 8e6 cycles (clock cycles) in the future
+        cx.schedule.toggle(now + 8_000_000.cycles()).unwrap();
+
+        // power on GPIOA, RM0368 6.3.11
+        device.RCC.ahb1enr.modify(|_, w| w.gpioaen().set_bit());
+        // configure PA5 as output, RM0368 8.4.1
+        device.GPIOA.moder.modify(|_, w| w.moder5().bits(1));
+
+        // pass on late resources
+        init::LateResources {
+            GPIOA: device.GPIOA,
+        }
+    }
+
+    
+    #[idle]
+    fn idle(_cx: idle::Context) -> ! {
+        rprintln!("lets get lazy");
         loop {
-        // your code goes here
+            continue;
+        }
+    }
+    
+    
+
+    #[task(resources = [GPIOA], schedule = [toggle])]
+    fn toggle(cx: toggle::Context) {
+        static mut TOGGLE: bool = false;
+        rprintln!("toggle  @ {:?}", Instant::now());
+
+        if *TOGGLE {
+            cx.resources.GPIOA.bsrr.write(|w| w.bs5().set_bit());
+        } else {
+            cx.resources.GPIOA.bsrr.write(|w| w.br5().set_bit());
         }
+
+        *TOGGLE = !*TOGGLE;
+        cx.schedule
+            .toggle(cx.scheduled + 16_000_000.cycles())
+            .unwrap();
+    }
+
+    extern "C" {
+        fn EXTI0();
     }
+};
+