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();
79 pub unsafe extern "C" fn _start() -> ! {
85 // Configure pins for I2C0.
86 port::set_af(port::PORTC, 8, 2);
87 port::set_af(port::PORTC, 9, 2);
89 i2c::configure(i2c::I2C0);
91 nvic::disable_irq(8); // I2C0
93 // Configure pin for the display's reset line.
94 gpio::set_direction(gpio::GPIOB, 1 << 16, gpio::Direction::Output);
95 port::set_af(port::PORTB, 16, 1);
97 // Configure pins for UART0.
98 port::set_af(port::PORTE, 20, 4);
99 port::set_af(port::PORTE, 21, 4);
101 // Configure pin for the GPS's reset line.
102 gpio::set_direction(gpio::GPIOB, 1 << 1, gpio::Direction::Output);
103 port::set_af(port::PORTB, 1, 1);
105 // Configure upper right push button.
106 gpio::set_direction(gpio::GPIOA, 1 << 12, gpio::Direction::Input);
107 port::set_af(port::PORTA, 12, 1);
108 port::set_pull(port::PORTA, 12, port::Pull::Up);
112 usb_serial::init(0xf055, 0x635d);
114 cdc_tx_buf.write(b"\n");
117 let mut display = display::Display::new(gpio::GPIOB, 1 << 16, 0x3c);
122 let mut screen = screen::Screen::new();
124 // Hold GPS in reset while configuring its UART.
125 gpio::clear(gpio::GPIOB, 1);
126 systick::delay_ms(50);
127 uart::configure(uart::UART0);
128 systick::delay_ms(50);
129 gpio::set(gpio::GPIOB, 1);
131 nvic::enable_irq(12); // UART0
133 let mut gps = gps::Gps::new();
135 let mut gps_has_fix = false;
136 let mut gps_has_fix_ticks = 0;
138 let mut heart_icon_timer = Timer::new(1000);
139 let mut gps_icon_timer = Timer::new(500);
141 let mut prev_tap = gps::TimeAndPos::new();
144 let mut tap = gps::TimeAndPos::new();
145 let mut show_time = false;
146 let old_gps_has_fix = gps_has_fix;
148 while gps.update(&mut tap) {
154 gps_has_fix_ticks = systick::now();
157 // Did GPS fix information expire?
158 if gps_has_fix && systick::has_timeout_ms(gps_has_fix_ticks, 1500) {
162 if gps_has_fix && !old_gps_has_fix {
163 display.show_icon(display::Icon::SatelliteBody);
164 display.show_icon(display::Icon::SatelliteWave1);
165 display.show_icon(display::Icon::SatelliteWave2);
166 } else if !gps_has_fix {
167 gps_icon_timer.update(|state| {
169 display.show_icon(display::Icon::SatelliteWave1);
171 } else if state == 2 {
172 display.show_icon(display::Icon::SatelliteWave2);
174 } else if state == 3 {
175 display.hide_icon(display::Icon::SatelliteBody);
176 display.hide_icon(display::Icon::SatelliteWave1);
177 display.hide_icon(display::Icon::SatelliteWave2);
180 display.show_icon(display::Icon::SatelliteBody);
187 if let Some(tm) = Time::from_unix_time(prev_tap.unix_time) {
188 let mut time_s = [b' '; 8];
189 tm.fmt_time(&mut time_s);
192 screen.draw_text(&time_s);
194 display.draw(&screen);
198 heart_icon_timer.update(|state| {
200 display.hide_icon(display::Icon::Heart);
203 display.show_icon(display::Icon::Heart);
208 if (gpio::get(gpio::GPIOA) & (1 << 12)) == 0 {
209 nvic::system_reset();