2 * Copyright (c) 2019 Tilman Sauerbeck (tilman at code-monkey de)
4 * Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sublicense, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
19 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
20 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
21 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 #[link(name="libcommon.rlib")]
32 use common::buffer::Buffer;
40 use common::usb_serial;
44 use common::time::Time;
47 fn enable_interrupts();
49 static mut cdc_tx_buf: Buffer;
55 last_update_ticks: u32,
59 pub fn new(delay_ms: u32) -> Timer {
63 last_update_ticks: systick::now(),
67 pub fn update<F>(&mut self, func: F)
68 where F: FnOnce(u32) -> u32
70 if systick::has_timeout_ms(self.last_update_ticks, self.delay_ms) {
71 self.state = func(self.state);
73 self.last_update_ticks = systick::now();
80 fn panic(_info: &core::panic::PanicInfo) -> ! {
86 pub unsafe extern "C" fn _start() -> ! {
92 // Configure pins for I2C0.
93 port::set_af(port::PORTC, 8, 2);
94 port::set_af(port::PORTC, 9, 2);
96 i2c::configure(i2c::I2C0);
98 nvic::disable_irq(8); // I2C0
100 // Configure pin for the display's reset line.
101 gpio::set_direction(gpio::GPIOB, 1 << 16, gpio::Direction::Output);
102 port::set_af(port::PORTB, 16, 1);
104 // Configure pins for UART0.
105 port::set_af(port::PORTE, 20, 4);
106 port::set_af(port::PORTE, 21, 4);
108 // Configure pin for the GPS's reset line.
109 gpio::set_direction(gpio::GPIOB, 1 << 1, gpio::Direction::Output);
110 port::set_af(port::PORTB, 1, 1);
112 // Configure upper right push button.
113 gpio::set_direction(gpio::GPIOA, 1 << 12, gpio::Direction::Input);
114 port::set_af(port::PORTA, 12, 1);
115 port::set_pull(port::PORTA, 12, port::Pull::Up);
119 usb_serial::init(0xf055, 0x635d);
121 cdc_tx_buf.write(b"\n");
124 let mut display = display::Display::new(gpio::GPIOB, 1 << 16, 0x3c);
129 let mut screen = screen::Screen::new();
131 // Hold GPS in reset while configuring its UART.
132 gpio::clear(gpio::GPIOB, 1);
133 systick::delay_ms(50);
134 uart::configure(uart::UART0);
135 systick::delay_ms(50);
136 gpio::set(gpio::GPIOB, 1);
138 nvic::enable_irq(12); // UART0
140 let mut gps = gps::Gps::new();
142 let mut gps_has_fix = false;
143 let mut gps_has_fix_ticks = 0;
145 let mut heart_icon_timer = Timer::new(1000);
146 let mut gps_icon_timer = Timer::new(500);
148 let mut prev_tap = gps::TimeAndPos::new();
151 let mut tap = gps::TimeAndPos::new();
152 let mut show_time = false;
153 let old_gps_has_fix = gps_has_fix;
155 while gps.update(&mut tap) {
161 gps_has_fix_ticks = systick::now();
164 // Did GPS fix information expire?
165 if gps_has_fix && systick::has_timeout_ms(gps_has_fix_ticks, 1500) {
169 if gps_has_fix && !old_gps_has_fix {
170 display.show_icon(display::Icon::SatelliteBody);
171 display.show_icon(display::Icon::SatelliteWave1);
172 display.show_icon(display::Icon::SatelliteWave2);
173 } else if !gps_has_fix {
174 gps_icon_timer.update(|state| {
176 display.show_icon(display::Icon::SatelliteWave1);
178 } else if state == 2 {
179 display.show_icon(display::Icon::SatelliteWave2);
181 } else if state == 3 {
182 display.hide_icon(display::Icon::SatelliteBody);
183 display.hide_icon(display::Icon::SatelliteWave1);
184 display.hide_icon(display::Icon::SatelliteWave2);
187 display.show_icon(display::Icon::SatelliteBody);
194 if let Some(tm) = Time::from_unix_time(prev_tap.unix_time) {
195 let mut time_s = [b' '; 8];
196 tm.fmt_time(&mut time_s);
199 screen.draw_text(&time_s);
201 display.draw(&screen);
205 heart_icon_timer.update(|state| {
207 display.hide_icon(display::Icon::Heart);
210 display.show_icon(display::Icon::Heart);
215 if (gpio::get(gpio::GPIOA) & (1 << 12)) == 0 {
216 nvic::system_reset();