use common::gpio;
use common::nvic;
use common::i2c;
+use common::spi;
use common::uart;
use common::usb_serial;
use common::display;
use common::gps;
+use common::screen;
+use common::time::Time;
extern {
fn enable_interrupts();
}
}
+fn reset_requested() -> bool {
+ (gpio::get(gpio::GPIOA) & (1 << 12)) == 0
+}
+
+#[inline(never)]
+#[panic_handler]
+fn panic(_info: &core::panic::PanicInfo) -> ! {
+ loop {
+ if reset_requested() {
+ nvic::system_reset();
+ }
+ }
+}
+
#[no_mangle]
pub unsafe extern "C" fn _start() -> ! {
clock::configure();
gpio::set_direction(gpio::GPIOB, 1 << 16, gpio::Direction::Output);
port::set_af(port::PORTB, 16, 1);
+ // Configure pin for the MX25L's chip select line.
+ gpio::set_direction(gpio::GPIOD, 1 << 0, gpio::Direction::Output);
+ port::set_af(port::PORTD, 0, 1);
+ gpio::set(gpio::GPIOD, 1 << 0);
+
+ // Configure pins for SPI0.
+ port::set_af(port::PORTD, 1, 2);
+ port::set_af(port::PORTD, 2, 5);
+ port::set_af(port::PORTD, 3, 5);
+
+ spi::configure(spi::SPI0);
+
+ nvic::disable_irq(10); // SPI0
+
// Configure pins for UART0.
port::set_af(port::PORTE, 20, 4);
port::set_af(port::PORTE, 21, 4);
display.init();
display.clear();
+ let mut screen = screen::Screen::new();
+
// Hold GPS in reset while configuring its UART.
gpio::clear(gpio::GPIOB, 1);
systick::delay_ms(50);
let mut heart_icon_timer = Timer::new(1000);
let mut gps_icon_timer = Timer::new(500);
+ let mut prev_tap = gps::TimeAndPos::new();
+
loop {
let mut tap = gps::TimeAndPos::new();
+ let mut show_time = false;
let old_gps_has_fix = gps_has_fix;
while gps.update(&mut tap) {
+ prev_tap = tap;
+
+ show_time = true;
+
gps_has_fix = true;
gps_has_fix_ticks = systick::now();
}
});
}
+ if show_time {
+ if let Some(tm) = Time::from_unix_time(prev_tap.unix_time) {
+ let mut time_s = [b' '; 8];
+ tm.fmt_time(&mut time_s);
+
+ screen.clear();
+ screen.draw_text(&time_s);
+
+ display.draw(&screen);
+ }
+ }
+
heart_icon_timer.update(|state| {
if state == 1 {
display.hide_icon(display::Icon::Heart);
}
});
- if (gpio::get(gpio::GPIOA) & (1 << 12)) == 0 {
+ if reset_requested() {
nvic::system_reset();
}
}