application: Use the Button struct to handle the play button.

diff --git a/src/application/main.rs b/src/application/main.rs
index ac87977963aa8c4411c10ecef9ffc6adabd88ca8..5ec2f96b7c98dc7d87d9f5d01adfee0b8b91e247 100644 (file)
--- a/src/application/main.rs
+++ b/src/application/main.rs
@@ -28,6 +28,7 @@
 extern crate common;
 
 mod uart0;
+mod button;
 
 use common::buffer::Buffer;
 use common::ringbuf::Ringbuf;
@@ -124,10 +125,6 @@ fn configure_push_buttons() {
     port::set_pull(port::PORTE, 31, port::Pull::Up);
 }
 
-fn poll_pta12() -> bool {
-    (gpio::get(gpio::GPIOA) & (1 << 12)) == 0
-}
-
 fn uart0_try_read() -> Option<u8> {
     extern {
         static mut uart0_rx_buf: Ringbuf;
@@ -215,8 +212,7 @@ pub unsafe extern "C" fn _start() -> ! {
     let mut logger = Logger::new(&mut mx25l);
     logger.init();
 
-    let mut pta1_start_press_ticks = 0;
-    let mut pta12_was_pressed = poll_pta12();
+    let mut pta12 = button::Button::new(gpio::GPIOA, 1 << 12);
     let mut is_recording = false;
 
     let mut gps = gps::Gps::new();
@@ -316,12 +312,7 @@ pub unsafe extern "C" fn _start() -> ! {
 
         shell.update(&mut logger);
 
-        let pta12_is_pressed = poll_pta12();
-
-        if !pta12_was_pressed && pta12_is_pressed {
-            pta1_start_press_ticks = systick::now();
-        } else if pta12_was_pressed && !pta12_is_pressed {
-            if systick::has_timeout_ms(pta1_start_press_ticks, 1500) {
+        if pta12.has_been_held_for_ms(1500) {
                 is_recording = !is_recording;
 
                 if is_recording {
@@ -331,11 +322,8 @@ pub unsafe extern "C" fn _start() -> ! {
                 }
 
                 total_distance_cm = 0;
-            }
         }
 
-        pta12_was_pressed = pta12_is_pressed;
-
         if reset_requested() {
             nvic::system_reset();
         }