bare7_1

examples/rtic_bare6.rs

@@ -203,6 +203,7 @@ fn clock_out(rcc: &RCC, gpioc: &GPIOC) {
 //    `rcc.cfgr.sysclk(64.mhz()).pclk1(64.mhz()).pclk2(64.mhz()).freeze()`;
 //
 //    ** your answer here **
+//      pclk1 has max frequency of 42 mhz.
 //
 //    `rcc.cfgr.sysclk(84.mhz()).pclk1(42.mhz()).pclk2(64.mhz()).freeze();`
 //

examples/rtic_bare7.rs

@@ -11,23 +11,25 @@
 use panic_rtt_target as _;
 use rtic::cyccnt::{Instant, U32Ext as _};
 use rtt_target::{rprintln, rtt_init_print};
+use stm32f4::stm32f411::GPIOA;
 use stm32f4xx_hal::stm32;
 
 use stm32f4xx_hal::{
     gpio::{gpioa::PA5, Output, PushPull},
     prelude::*,
 };
-;
+
 use embedded_hal::digital::v2::{OutputPin, ToggleableOutputPin};
 
 const OFFSET: u32 = 8_000_000;
 
 #[rtic::app(device = stm32f4xx_hal::stm32, monotonic = rtic::cyccnt::CYCCNT, peripherals = true)]
 const APP: () = {
+    //We only need the led pin
     struct Resources {
         // late resources
-        GPIOA: stm32::GPIOA,
-        // led: PA5<Output<PushPull>>,
+        //GPIOA: stm32::GPIOA,
+        led: PA5<Output<PushPull>>,
     }
     #[init(schedule = [toggle])]
     fn init(cx: init::Context) -> init::LateResources {
@@ -54,8 +56,10 @@ const APP: () = {
         device.GPIOA.moder.modify(|_, w| w.moder5().bits(1));
 
         // pass on late resources
+        // Get the specific pin and make it a push pull output
         init::LateResources {
-            GPIOA: device.GPIOA,
+            //GPIOA: device.GPIOA,
+            led: device.GPIOA.split().pa5.into_push_pull_output(),
         }
     }
 
@@ -67,17 +71,20 @@ const APP: () = {
         }
     }
 
-    #[task(resources = [GPIOA], schedule = [toggle])]
+    #[task(resources = [led], schedule = [toggle])]
     fn toggle(cx: toggle::Context) {
         static mut TOGGLE: bool = false;
         rprintln!("toggle  @ {:?}", Instant::now());
 
+        //use the set high/low for push pull output
         if *TOGGLE {
-            cx.resources.GPIOA.bsrr.write(|w| w.bs5().set_bit());
+            cx.resources.led.set_high().ok();
+            
         } else {
-            cx.resources.GPIOA.bsrr.write(|w| w.br5().set_bit());
+            cx.resources.led.set_low().ok();
         }
         
+
         *TOGGLE = !*TOGGLE;
         cx.schedule.toggle(cx.scheduled + OFFSET.cycles()).unwrap();
     }
@@ -97,6 +104,7 @@ fn _toggle_generic<E>(led: &mut dyn OutputPin<Error = E>, toggle: &mut bool) {
     *toggle = !*toggle;
 }
 
+
 fn _toggleable_generic<E>(led: &mut dyn ToggleableOutputPin<Error = E>) {
     led.toggle().ok();
 }