X-Git-Url: http://git.code-monkey.de/?a=blobdiff_plain;f=src%2Fapplication%2Fmain.rs;h=74f199906853468fd5c6ac22fd41f25bc333480d;hb=45b7bcb737ad4bedf4f93548869f5037a6a2c1c2;hp=b1bf3afd24818147146c5a2a89e3773adcdd9372;hpb=ce5666c12eb4333fd71adb58d8d5ad740fcffe8b;p=gps-watch.git

diff --git a/src/application/main.rs b/src/application/main.rs
index b1bf3af..74f1999 100644
--- a/src/application/main.rs
+++ b/src/application/main.rs
@@ -22,11 +22,13 @@
  */
 
 #![no_std]
-#![crate_type="staticlib"]
+#![no_main]
 #[link(name="libcommon.rlib")]
 
 extern crate common;
 
+mod uart0;
+
 use common::buffer::Buffer;
 use common::clock;
 use common::systick;
@@ -34,8 +36,10 @@ use common::port;
 use common::gpio;
 use common::nvic;
 use common::i2c;
+use common::uart;
 use common::usb_serial;
 use common::display;
+use common::gps;
 
 extern {
     fn enable_interrupts();
@@ -43,9 +47,36 @@ extern {
     static mut cdc_tx_buf: Buffer;
 }
 
+struct Timer {
+    state: u32,
+    delay_ms: u32,
+    last_update_ticks: u32,
+}
+
+impl Timer {
+    pub fn new(delay_ms: u32) -> Timer {
+        Timer {
+            state: 0,
+            delay_ms: delay_ms,
+            last_update_ticks: systick::now(),
+        }
+    }
+
+    pub fn update<F>(&mut self, func: F)
+        where F: FnOnce(u32) -> u32
+    {
+        if systick::has_timeout_ms(self.last_update_ticks, self.delay_ms) {
+            self.state = func(self.state);
+
+            self.last_update_ticks = systick::now();
+        }
+    }
+}
+
 #[no_mangle]
-pub unsafe extern fn main() {
+pub unsafe extern "C" fn _start() -> ! {
     clock::configure();
+    clock::enable_osc0();
     systick::init();
     port::init();
 
@@ -61,6 +92,14 @@ pub unsafe extern fn main() {
     gpio::set_direction(gpio::GPIOB, 1 << 16, gpio::Direction::Output);
     port::set_af(port::PORTB, 16, 1);
 
+    // Configure pins for UART0.
+    port::set_af(port::PORTE, 20, 4);
+    port::set_af(port::PORTE, 21, 4);
+
+    // Configure pin for the GPS's reset line.
+    gpio::set_direction(gpio::GPIOB, 1 << 1, gpio::Direction::Output);
+    port::set_af(port::PORTB, 1, 1);
+
     // Configure upper right push button.
     gpio::set_direction(gpio::GPIOA, 1 << 12, gpio::Direction::Input);
     port::set_af(port::PORTA, 12, 1);
@@ -78,11 +117,34 @@ pub unsafe extern fn main() {
     display.init();
     display.clear();
 
+    // Hold GPS in reset while configuring its UART.
+    gpio::clear(gpio::GPIOB, 1);
+    systick::delay_ms(50);
+    uart::configure(uart::UART0);
+    systick::delay_ms(50);
+    gpio::set(gpio::GPIOB, 1);
+
+    nvic::enable_irq(12); // UART0
+
+    let mut gps = gps::Gps::new();
+
+    let mut heart_icon_timer = Timer::new(1000);
+
     loop {
-        systick::delay_ms(1000);
+        let mut tap = gps::TimeAndPos::new();
+
+        while gps.update(&mut tap) {
+        }
 
-        cdc_tx_buf.write(b".\n");
-        cdc_tx_buf.flush();
+        heart_icon_timer.update(|state| {
+            if state == 1 {
+                display.hide_icon(display::Icon::Heart);
+                0
+            } else {
+                display.show_icon(display::Icon::Heart);
+                1
+            }
+        });
 
         if (gpio::get(gpio::GPIOA) & (1 << 12)) == 0 {
             nvic::system_reset();