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;
41 use common::usb_serial;
45 use common::time::Time;
48 fn enable_interrupts();
50 static mut cdc_tx_buf: Buffer;
56 last_update_ticks: u32,
60 pub fn new(delay_ms: u32) -> Timer {
64 last_update_ticks: systick::now(),
68 pub fn update<F>(&mut self, func: F)
69 where F: FnOnce(u32) -> u32
71 if systick::has_timeout_ms(self.last_update_ticks, self.delay_ms) {
72 self.state = func(self.state);
74 self.last_update_ticks = systick::now();
79 fn reset_requested() -> bool {
80 let pta1 = gpio::get(gpio::GPIOA) & (1 << 1);
81 let pte25 = gpio::get(gpio::GPIOE) & (1 << 25);
88 fn panic(_info: &core::panic::PanicInfo) -> ! {
90 if reset_requested() {
96 fn configure_push_buttons() {
97 // Configure lower right push button.
98 gpio::set_direction(gpio::GPIOA, 1 << 1, gpio::Direction::Input);
99 port::set_af(port::PORTA, 1, 1);
100 port::set_pull(port::PORTA, 1, port::Pull::Up);
102 // Configure upper right push button.
103 gpio::set_direction(gpio::GPIOA, 1 << 12, gpio::Direction::Input);
104 port::set_af(port::PORTA, 12, 1);
105 port::set_pull(port::PORTA, 12, port::Pull::Up);
107 // Configure lower left push button.
108 gpio::set_direction(gpio::GPIOE, 1 << 24, gpio::Direction::Input);
109 port::set_af(port::PORTE, 24, 1);
110 port::set_pull(port::PORTE, 24, port::Pull::Up);
112 // Configure upper left push button.
113 gpio::set_direction(gpio::GPIOE, 1 << 25, gpio::Direction::Input);
114 port::set_af(port::PORTE, 25, 1);
115 port::set_pull(port::PORTE, 25, port::Pull::Up);
117 // Configure middle left push button.
118 gpio::set_direction(gpio::GPIOE, 1 << 31, gpio::Direction::Input);
119 port::set_af(port::PORTE, 31, 1);
120 port::set_pull(port::PORTE, 31, port::Pull::Up);
124 pub unsafe extern "C" fn _start() -> ! {
126 clock::enable_osc0();
130 // Configure pins for I2C0.
131 port::set_af(port::PORTC, 8, 2);
132 port::set_af(port::PORTC, 9, 2);
134 i2c::configure(i2c::I2C0);
136 nvic::disable_irq(8); // I2C0
138 // Configure pin for the display's reset line.
139 gpio::set_direction(gpio::GPIOB, 1 << 16, gpio::Direction::Output);
140 port::set_af(port::PORTB, 16, 1);
142 // Configure pin for the MX25L's chip select line.
143 gpio::set_direction(gpio::GPIOD, 1 << 0, gpio::Direction::Output);
144 port::set_af(port::PORTD, 0, 1);
145 gpio::set(gpio::GPIOD, 1 << 0);
147 // Configure pins for SPI0.
148 port::set_af(port::PORTD, 1, 2);
149 port::set_af(port::PORTD, 2, 5);
150 port::set_af(port::PORTD, 3, 5);
152 spi::configure(spi::SPI0);
154 nvic::disable_irq(10); // SPI0
156 // Configure pins for UART0.
157 port::set_af(port::PORTE, 20, 4);
158 port::set_af(port::PORTE, 21, 4);
160 // Configure pin for the GPS's reset line.
161 gpio::set_direction(gpio::GPIOB, 1 << 1, gpio::Direction::Output);
162 port::set_af(port::PORTB, 1, 1);
164 configure_push_buttons();
168 usb_serial::init(0xf055, 0x635d);
170 cdc_tx_buf.write(b"\n");
173 let mut display = display::Display::new(gpio::GPIOB, 1 << 16, 0x3c);
178 let mut screen = screen::Screen::new();
180 // Hold GPS in reset while configuring its UART.
181 gpio::clear(gpio::GPIOB, 1);
182 systick::delay_ms(50);
183 uart::configure(uart::UART0);
184 systick::delay_ms(50);
185 gpio::set(gpio::GPIOB, 1);
187 nvic::enable_irq(12); // UART0
189 let mut gps = gps::Gps::new();
191 let mut gps_has_fix = false;
192 let mut gps_has_fix_ticks = 0;
194 let mut heart_icon_timer = Timer::new(1000);
195 let mut gps_icon_timer = Timer::new(500);
197 let mut prev_tap = gps::TimeAndPos::new();
200 let mut tap = gps::TimeAndPos::new();
201 let mut show_time = false;
202 let old_gps_has_fix = gps_has_fix;
204 while gps.update(&mut tap) {
210 gps_has_fix_ticks = systick::now();
213 // Did GPS fix information expire?
214 if gps_has_fix && systick::has_timeout_ms(gps_has_fix_ticks, 1500) {
218 if gps_has_fix && !old_gps_has_fix {
219 display.show_icon(display::Icon::SatelliteBody);
220 display.show_icon(display::Icon::SatelliteWave1);
221 display.show_icon(display::Icon::SatelliteWave2);
222 } else if !gps_has_fix {
223 gps_icon_timer.update(|state| {
225 display.show_icon(display::Icon::SatelliteWave1);
227 } else if state == 2 {
228 display.show_icon(display::Icon::SatelliteWave2);
230 } else if state == 3 {
231 display.hide_icon(display::Icon::SatelliteBody);
232 display.hide_icon(display::Icon::SatelliteWave1);
233 display.hide_icon(display::Icon::SatelliteWave2);
236 display.show_icon(display::Icon::SatelliteBody);
243 if let Some(tm) = Time::from_unix_time(prev_tap.unix_time) {
244 let mut time_s = [b' '; 8];
245 tm.fmt_time(&mut time_s);
248 screen.draw_text(&time_s);
250 display.draw(&screen);
254 heart_icon_timer.update(|state| {
256 display.hide_icon(display::Icon::Heart);
259 display.show_icon(display::Icon::Heart);
264 if reset_requested() {
265 nvic::system_reset();