Add single button to async_io

src/async_io.rs

@@ -25,10 +25,18 @@ pub enum SMSFormat {
     TextMode = 1,
 }
 
+#[derive(Clone, Default)]
+pub struct Button {
+    was_pressed: bool,
+    is_pressed: bool,
+    presses: u32,
+}
+
 #[derive(Clone)]
 pub struct AsyncIO {
     at_command: Rc<Mutex<RefCell<Option<ATCommand>>>>,
     at_response: Rc<Mutex<RefCell<Option<String>>>>,
+    button: Rc<Mutex<RefCell<Button>>>,
 }
 
 impl Default for AsyncIO {
@@ -36,6 +44,7 @@ impl Default for AsyncIO {
         Self {
             at_command: Rc::new(Mutex::new(RefCell::new(None))),
             at_response: Rc::new(Mutex::new(RefCell::new(None))),
+            button: Rc::new(Mutex::new(RefCell::new(Default::default()))),
         }
     }
 }
@@ -86,4 +95,29 @@ impl AsyncIO {
             None
         })
     }
+
+    pub unsafe fn set_button_pressed(&self, pressed: bool) {
+        critical_section::with(|cs| {
+            let mut button = self.button.borrow_ref_mut(cs);
+            button.was_pressed = button.is_pressed;
+            button.is_pressed = pressed;
+            if !button.was_pressed && button.is_pressed {
+                button.presses += 1;
+            }
+        })
+    }
+
+    pub fn get_button_presses(&self) -> u32 {
+        critical_section::with(|cs| {
+            let button = self.button.borrow_ref(cs);
+            button.presses
+        })
+    }
+
+    pub fn clear_button_presses(&self) {
+        critical_section::with(|cs| {
+            let mut button = self.button.borrow_ref_mut(cs);
+            button.presses = 0;
+        })
+    }
 }

src/main.rs

@@ -24,7 +24,7 @@ use critical_section::Mutex;
 use esp_hal::{
     clock::CpuClock,
     delay::Delay,
-    gpio::{InputConfig, Level, Output, OutputConfig},
+    gpio::{Input, InputConfig, Level, Output, OutputConfig},
     interrupt::software::SoftwareInterruptControl,
     main,
     spi::master::{Config, Spi},
@@ -39,7 +39,8 @@ use esp_backtrace as _;
 use crate::{
     async_io::AsyncIO,
     at_commands::ATCommands,
-    display::{Display, SetAddressMode},
+    display::{Display, Position, Rgb565, SetAddressMode},
+    font::FontRenderer,
     state::StateManager,
     states::InitATState,
 };
@@ -142,6 +143,18 @@ fn main() -> ! {
         delay: Delay::new(),
     };
 
+    let font_renderer = FontRenderer::create(30);
+    display.clear(Rgb565::black().as_color());
+    font_renderer.render(
+        &mut display,
+        "Please wait",
+        Position::new(120, 120),
+        font::HorizontalAlignment::Center,
+        font::VerticalAlignment::Center,
+        Rgb565::black(),
+        Rgb565::white(),
+    );
+
     at_commands.init();
 
     let async_io = AsyncIO::default();
@@ -169,6 +182,11 @@ fn main() -> ! {
     // let input_6 = Input::new(peripherals.GPIO26, pull_up_cfg);
     // let input_7 = Input::new(peripherals.GPIO27, pull_up_cfg);
 
+    let button = Input::new(
+        peripherals.GPIO13,
+        InputConfig::default().with_pull(esp_hal::gpio::Pull::Up),
+    );
+
     static mut THREAD_2_STACK: Stack<{ 30 * 1024 }> = esp_hal::system::Stack {
         mem: MaybeUninit::new([0u8; 30 * 1024]),
     };
@@ -185,11 +203,10 @@ fn main() -> ! {
         },
         {
             let io = async_io.clone();
-            || thread_2_main(io, at_commands)
+            || thread_2_main(io, at_commands, button)
         },
     );
 
-    let mut test_delay = Delay::new();
     loop {
         state_mgr.update();
         state_mgr.draw();
@@ -198,7 +215,7 @@ fn main() -> ! {
     // for inspiration have a look at the examples at https://github.com/esp-rs/esp-hal/tree/esp-hal-v1.1.0/examples
 }
 
-fn thread_2_main(async_io: AsyncIO, mut at_commands: ATCommands<'static, 'static>) {
+fn thread_2_main(async_io: AsyncIO, mut at_commands: ATCommands<'static, 'static>, button: Input) {
     loop {
         if let Some(command) = unsafe { async_io.check_at_command() } {
             let response = match command {
@@ -219,5 +236,7 @@ fn thread_2_main(async_io: AsyncIO, mut at_commands: ATCommands<'static, 'static
             };
             unsafe { async_io.set_at_response(response) };
         }
+
+        unsafe { async_io.set_button_pressed(button.is_low()) };
     }
 }

src/state.rs

@@ -10,10 +10,10 @@ use crate::{
 
 #[derive(PartialEq, Eq, Clone)]
 pub struct TextSettings {
-    h_align: HorizontalAlignment,
-    v_align: VerticalAlignment,
-    fg: Rgb565,
-    bg: Rgb565,
+    pub h_align: HorizontalAlignment,
+    pub v_align: VerticalAlignment,
+    pub fg: Rgb565,
+    pub bg: Rgb565,
 }
 
 impl Default for TextSettings {
@@ -82,6 +82,7 @@ impl<'a> StateManager<'a> {
             Some(next_state) => self.curr_state = next_state,
             None => {}
         }
+        self.data.io.clear_button_presses();
     }
 
     pub fn draw(&mut self) {

src/states.rs

@@ -11,6 +11,7 @@ use esp_hal::time::{Duration, Instant};
 use crate::{
     async_io::{ATCommand, SMSFormat},
     display::{Position, Rgb565},
+    font::{HorizontalAlignment, VerticalAlignment},
     state::{State, StateData, TextSettings},
 };
 
@@ -110,12 +111,44 @@ pub struct TextState {
 
 impl State for TextState {
     fn update(&mut self, data: &mut StateData) -> Option<Box<dyn State>> {
-        data.delay.delay_millis(100);
-        None
+        if data.io.get_button_presses() > 0 {
+            Some(Box::new(ButtonTestState { presses: 0 }))
+        } else {
+            None
+        }
     }
 
     fn draw(&self, data: &mut StateData) {
         data.clear_screen(Rgb565::black().as_color());
         data.draw_text(&self.text, Position::new(0, 0), TextSettings::default());
+        data.draw_text(
+            "OK",
+            Position::new(120, 240),
+            TextSettings {
+                h_align: HorizontalAlignment::Center,
+                v_align: VerticalAlignment::BottomToTop,
+                ..Default::default()
+            },
+        );
+    }
+}
+
+pub struct ButtonTestState {
+    presses: u32,
+}
+
+impl State for ButtonTestState {
+    fn update(&mut self, data: &mut StateData) -> Option<Box<dyn State>> {
+        self.presses += data.io.get_button_presses();
+        None
+    }
+
+    fn draw(&self, data: &mut StateData) {
+        data.clear_screen(Rgb565::black().as_color());
+        data.draw_text(
+            format!("Presses: {}", self.presses),
+            Position::new(0, 0),
+            TextSettings::default(),
+        );
     }
 }