*/
#![no_std]
-#![crate_type="staticlib"]
+#![no_main]
#[link(name="libcommon.rlib")]
extern crate common;
+mod uart0;
+mod button;
+mod model;
+mod views;
+
use common::buffer::Buffer;
+use common::ringbuf::Ringbuf;
use common::clock;
use common::systick;
use common::port;
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::mx25l::Mx25l;
+use common::shell::Shell;
+use common::logger::Logger;
extern {
fn enable_interrupts();
static mut cdc_tx_buf: Buffer;
}
-#[no_mangle]
-pub unsafe extern fn main() {
- clock::configure();
- systick::init();
- port::init();
+#[derive(Clone, Copy, PartialEq)]
+enum View {
+ Time,
+ Distance,
+}
+
+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();
+ }
+ }
+}
+
+fn next_view(view: View) -> View {
+ match view {
+ View::Time => View::Distance,
+ View::Distance => View::Time,
+ }
+}
+
+fn previous_view(view: View) -> View {
+ match view {
+ View::Time => View::Distance,
+ View::Distance => View::Time,
+ }
+}
+
+fn reset_requested() -> bool {
+ let pta1 = gpio::get(gpio::GPIOA) & (1 << 1);
+ let pte25 = gpio::get(gpio::GPIOE) & (1 << 25);
+
+ (pta1 | pte25) == 0
+}
+
+#[inline(never)]
+#[panic_handler]
+fn panic(_info: &core::panic::PanicInfo) -> ! {
+ loop {
+ if reset_requested() {
+ nvic::system_reset();
+ }
+ }
+}
+
+fn configure_push_buttons() {
+ // Configure lower right push button.
+ gpio::set_direction(gpio::GPIOA, 1 << 1, gpio::Direction::Input);
+ port::set_af(port::PORTA, 1, 1);
+ port::set_pull(port::PORTA, 1, port::Pull::Up);
// Configure upper right push button.
gpio::set_direction(gpio::GPIOA, 1 << 12, gpio::Direction::Input);
port::set_af(port::PORTA, 12, 1);
port::set_pull(port::PORTA, 12, port::Pull::Up);
+ // Configure lower left push button.
+ gpio::set_direction(gpio::GPIOE, 1 << 24, gpio::Direction::Input);
+ port::set_af(port::PORTE, 24, 1);
+ port::set_pull(port::PORTE, 24, port::Pull::Up);
+
+ // Configure upper left push button.
+ gpio::set_direction(gpio::GPIOE, 1 << 25, gpio::Direction::Input);
+ port::set_af(port::PORTE, 25, 1);
+ port::set_pull(port::PORTE, 25, port::Pull::Up);
+
+ // Configure middle left push button.
+ gpio::set_direction(gpio::GPIOE, 1 << 31, gpio::Direction::Input);
+ port::set_af(port::PORTE, 31, 1);
+ port::set_pull(port::PORTE, 31, port::Pull::Up);
+}
+
+fn uart0_try_read() -> Option<u8> {
+ extern {
+ static mut uart0_rx_buf: Ringbuf;
+ }
+
+ unsafe {
+ if uart0_rx_buf.is_empty() {
+ None
+ } else {
+ Some(uart0_rx_buf.read())
+ }
+ }
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn _start() -> ! {
+ clock::configure();
+ clock::enable_osc0();
+ systick::init();
+ port::init();
+
+ // Configure pins for I2C0.
+ port::set_af(port::PORTC, 8, 2);
+ port::set_af(port::PORTC, 9, 2);
+
+ i2c::configure(i2c::I2C0);
+
+ nvic::disable_irq(8); // I2C0
+
+ // Configure pin for the display's reset line.
+ 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);
+
+ // 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_push_buttons();
+
enable_interrupts();
usb_serial::init(0xf055, 0x635d);
cdc_tx_buf.write(b"\n");
cdc_tx_buf.flush();
+ let mut display = display::Display::new(gpio::GPIOB, 1 << 16, 0x3c);
+
+ 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);
+ uart::configure(uart::UART0);
+ systick::delay_ms(50);
+ gpio::set(gpio::GPIOB, 1);
+
+ nvic::enable_irq(12); // UART0
+
+ let mut shell = Shell::new(&mut cdc_tx_buf);
+
+ let mut mx25l = Mx25l::new(gpio::GPIOD, 1 << 0);
+
+ let mut logger = Logger::new(&mut mx25l);
+ logger.init();
+
+ let mut pta12 = button::Button::new(gpio::GPIOA, 1 << 12);
+ let mut pte24 = button::Button::new(gpio::GPIOE, 1 << 24);
+ let mut pta01 = button::Button::new(gpio::GPIOA, 1 << 1);
+ let mut is_recording = false;
+
+ let mut gps = gps::Gps::new();
+
+ let mut gps_has_fix = false;
+ let mut gps_has_fix_ticks = 0;
+
+ let mut heart_icon_timer = Timer::new(1000);
+ let mut gps_icon_timer = Timer::new(500);
+
+ let mut prev_tap = gps::TimeAndPos::new();
+
+ let mut view = View::Time;
+
+ let mut time_view = views::TimeView::new();
+ let mut distance_view = views::DistanceView::new();
+
+ let mut model = model::Model::new();
+
loop {
- systick::delay_ms(1000);
+ let mut tap = gps::TimeAndPos::new();
+ let old_gps_has_fix = gps_has_fix;
+
+ while gps.update(&mut tap, uart0_try_read) {
+ if is_recording {
+ logger.log(&prev_tap, &tap);
+
+ model.update(model::Field::Distance(logger.total_distance_cm));
+ }
+
+ model.update(model::Field::UnixTime(tap.unix_time));
+
+ prev_tap = tap;
+
+ gps_has_fix = true;
+ gps_has_fix_ticks = systick::now();
+ }
+
+ // Did GPS fix information expire?
+ if gps_has_fix && systick::has_timeout_ms(gps_has_fix_ticks, 1500) {
+ gps_has_fix = false;
+ }
+
+ if gps_has_fix && !old_gps_has_fix {
+ display.show_icon(display::Icon::SatelliteBody);
+ display.show_icon(display::Icon::SatelliteWave1);
+ display.show_icon(display::Icon::SatelliteWave2);
+ } else if !gps_has_fix {
+ gps_icon_timer.update(|state| {
+ if state == 1 {
+ display.show_icon(display::Icon::SatelliteWave1);
+ 2
+ } else if state == 2 {
+ display.show_icon(display::Icon::SatelliteWave2);
+ 3
+ } else if state == 3 {
+ display.hide_icon(display::Icon::SatelliteBody);
+ display.hide_icon(display::Icon::SatelliteWave1);
+ display.hide_icon(display::Icon::SatelliteWave2);
+ 0
+ } else {
+ display.show_icon(display::Icon::SatelliteBody);
+ 1
+ }
+ });
+ }
+
+ match view {
+ View::Time => {
+ if time_view.draw(&mut screen, &mut model) {
+ display.draw(&screen);
+ }
+ },
+ View::Distance => {
+ if distance_view.draw(&mut screen, &mut model) {
+ display.draw(&screen);
+ }
+ },
+ }
+
+ heart_icon_timer.update(|state| {
+ if state == 1 {
+ display.hide_icon(display::Icon::Heart);
+ 0
+ } else {
+ display.show_icon(display::Icon::Heart);
+ 1
+ }
+ });
+
+ shell.update(&mut logger);
+
+ if pta12.has_been_held_for_ms(1500) {
+ is_recording = !is_recording;
+
+ if is_recording {
+ logger.start_recording(&prev_tap);
+
+ view = View::Distance;
+ } else {
+ logger.stop_recording(&prev_tap);
+
+ view = View::Time;
+ }
+
+ model.reset();
+ }
+
+ let new_view = if pte24.has_been_held_for_ms(250) {
+ previous_view(view)
+ } else if pta01.has_been_held_for_ms(250) {
+ next_view(view)
+ } else {
+ view
+ };
+
+ if view != new_view {
+ view = new_view;
+
+ match view {
+ View::Time => time_view.invalidate(),
+ View::Distance => distance_view.invalidate(),
+ }
+ }
- cdc_tx_buf.write(b".\n");
- cdc_tx_buf.flush();
+ if reset_requested() {
+ nvic::system_reset();
+ }
}
}
projects / gps-watch.git / blobdiff