blinking and pushing

Cargo.lock

@@ -42,7 +42,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40ac3d0c0a542d0ab5521211f873f62706a7136df415676f676d347e5a41dd80"
 dependencies = [
  "bitflags",
- "embedded-hal",
+ "embedded-hal 0.2.7",
  "nb 1.1.0",
  "vcell",
 ]
@@ -71,7 +71,7 @@ dependencies = [
  "bare-metal 0.2.5",
  "bitfield",
  "critical-section",
- "embedded-hal",
+ "embedded-hal 0.2.7",
  "volatile-register",
 ]
 
@@ -154,6 +154,12 @@ dependencies = [
  "void",
 ]
 
+[[package]]
+name = "embedded-hal"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "361a90feb7004eca4019fb28352a9465666b24f840f5c3cddf0ff13920590b89"
+
 [[package]]
 name = "embedded-time"
 version = "0.12.1"
@@ -217,6 +223,7 @@ version = "0.1.0"
 dependencies = [
  "cortex-m",
  "cortex-m-rt",
+ "embedded-hal 1.0.0",
  "panic-halt",
  "stm32f3xx-hal",
 ]
@@ -393,7 +400,7 @@ dependencies = [
  "cortex-m-rt",
  "critical-section",
  "embedded-dma",
- "embedded-hal",
+ "embedded-hal 0.2.7",
  "embedded-time",
  "enumset",
  "nb 1.1.0",

Cargo.toml

@@ -8,6 +8,7 @@ version = "0.1.0"
 [dependencies]
 cortex-m = {version = "0.7.7", features = ["critical-section-single-core"]}
 cortex-m-rt = "0.7.5"
+embedded-hal = "1.0.0"
 panic-halt = "1.0.0"
 
 [dependencies.stm32f3xx-hal]

src/main.rs

@@ -1,9 +1,96 @@
 #![no_std]
 #![no_main]
-use core::ptr::write_volatile;
+
+extern crate panic_halt;
 use cortex_m_rt::entry;
-use panic_halt as _;
+use hal::prelude::*;
+use stm32f3xx_hal as hal;
 
 #[entry]
 fn main() -> ! {
+    let sp = hal::pac::Peripherals::take().unwrap();
+    let mut core_periphrals = hal::pac::CorePeripherals::take().unwrap();
+
+    let mut rcc = sp.RCC.constrain();
+    let mut flash = sp.FLASH.constrain();
+    let clocks = rcc.cfgr.freeze(&mut flash.acr);
+
+    let mut gpioa = sp.GPIOA.split(&mut rcc.ahb);
+    let mut led = gpioa
+        .pa5
+        .into_push_pull_output(&mut gpioa.moder, &mut gpioa.otyper);
+
+    let mut gpioc = sp.GPIOC.split(&mut rcc.ahb);
+    let button = gpioc.pc13.into_input(&mut gpioc.moder);
+
+    let reload = clocks.sysclk().0 / 8;
+
+    hal::pac::SYST::set_reload(&mut core_periphrals.SYST, reload - 1);
+    hal::pac::SYST::clear_current(&mut core_periphrals.SYST);
+    hal::pac::SYST::enable_counter(&mut core_periphrals.SYST);
+
+    let mut last_led_state = false;
+    let mut last_button_state = false;
+
+    //led.set_high().unwrap();
+    led.set_low().unwrap();
+
+    loop {
+        let mut led_state = last_led_state;
+
+        let button_state = if button.is_low().unwrap() {
+            led_state = true;
+            core_periphrals.SYST.clear_current();
+            true
+        } else {
+            false
+        };
+
+        if hal::pac::SYST::has_wrapped(&mut core_periphrals.SYST) {
+            led_state = !last_led_state;
+        }
+
+        if led_state != last_led_state || button_state != last_button_state {
+            if button_state != last_button_state {
+                if button_state {
+                    led.set_high();
+                } else {
+                    led.set_low();
+                }
+            } else {
+                if led_state {
+                    led.set_high();
+                } else {
+                    led.set_low();
+                }
+            }
+        }
+
+        last_button_state = button_state;
+        last_led_state = led_state;
+
+        /*
+        let mut button_state = last_button_state;
+        let mut led_state = last_led_state;
+
+        if button.is_low().unwrap() {
+            button_state = true;
+            led_state = true;
+        } else {
+            button_state = false;
+            led_state = false;
+        }
+
+        if last_led_state != led_state && button_state != last_button_state {
+            if led_state {
+                led.set_high();
+            } else {
+                led.set_low();
+            }
+        }
+
+        last_button_state = button_state;
+        last_led_state = led_state;
+        */
+    }
 }