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;
46 use common::mx25l::Mx25l;
47 use common::shell::Shell;
50 fn enable_interrupts();
52 static mut cdc_tx_buf: Buffer;
58 last_update_ticks: u32,
62 pub fn new(delay_ms: u32) -> Timer {
66 last_update_ticks: systick::now(),
70 pub fn update<F>(&mut self, func: F)
71 where F: FnOnce(u32) -> u32
73 if systick::has_timeout_ms(self.last_update_ticks, self.delay_ms) {
74 self.state = func(self.state);
76 self.last_update_ticks = systick::now();
81 fn reset_requested() -> bool {
82 let pta1 = gpio::get(gpio::GPIOA) & (1 << 1);
83 let pte25 = gpio::get(gpio::GPIOE) & (1 << 25);
90 fn panic(_info: &core::panic::PanicInfo) -> ! {
92 if reset_requested() {
98 fn configure_push_buttons() {
99 // Configure lower right push button.
100 gpio::set_direction(gpio::GPIOA, 1 << 1, gpio::Direction::Input);
101 port::set_af(port::PORTA, 1, 1);
102 port::set_pull(port::PORTA, 1, port::Pull::Up);
104 // Configure upper right push button.
105 gpio::set_direction(gpio::GPIOA, 1 << 12, gpio::Direction::Input);
106 port::set_af(port::PORTA, 12, 1);
107 port::set_pull(port::PORTA, 12, port::Pull::Up);
109 // Configure lower left push button.
110 gpio::set_direction(gpio::GPIOE, 1 << 24, gpio::Direction::Input);
111 port::set_af(port::PORTE, 24, 1);
112 port::set_pull(port::PORTE, 24, port::Pull::Up);
114 // Configure upper left push button.
115 gpio::set_direction(gpio::GPIOE, 1 << 25, gpio::Direction::Input);
116 port::set_af(port::PORTE, 25, 1);
117 port::set_pull(port::PORTE, 25, port::Pull::Up);
119 // Configure middle left push button.
120 gpio::set_direction(gpio::GPIOE, 1 << 31, gpio::Direction::Input);
121 port::set_af(port::PORTE, 31, 1);
122 port::set_pull(port::PORTE, 31, port::Pull::Up);
126 pub unsafe extern "C" fn _start() -> ! {
128 clock::enable_osc0();
132 // Configure pins for I2C0.
133 port::set_af(port::PORTC, 8, 2);
134 port::set_af(port::PORTC, 9, 2);
136 i2c::configure(i2c::I2C0);
138 nvic::disable_irq(8); // I2C0
140 // Configure pin for the display's reset line.
141 gpio::set_direction(gpio::GPIOB, 1 << 16, gpio::Direction::Output);
142 port::set_af(port::PORTB, 16, 1);
144 // Configure pin for the MX25L's chip select line.
145 gpio::set_direction(gpio::GPIOD, 1 << 0, gpio::Direction::Output);
146 port::set_af(port::PORTD, 0, 1);
147 gpio::set(gpio::GPIOD, 1 << 0);
149 // Configure pins for SPI0.
150 port::set_af(port::PORTD, 1, 2);
151 port::set_af(port::PORTD, 2, 5);
152 port::set_af(port::PORTD, 3, 5);
154 spi::configure(spi::SPI0);
156 nvic::disable_irq(10); // SPI0
158 // Configure pins for UART0.
159 port::set_af(port::PORTE, 20, 4);
160 port::set_af(port::PORTE, 21, 4);
162 // Configure pin for the GPS's reset line.
163 gpio::set_direction(gpio::GPIOB, 1 << 1, gpio::Direction::Output);
164 port::set_af(port::PORTB, 1, 1);
166 configure_push_buttons();
170 usb_serial::init(0xf055, 0x635d);
172 cdc_tx_buf.write(b"\n");
175 let mut display = display::Display::new(gpio::GPIOB, 1 << 16, 0x3c);
180 let mut screen = screen::Screen::new();
182 // Hold GPS in reset while configuring its UART.
183 gpio::clear(gpio::GPIOB, 1);
184 systick::delay_ms(50);
185 uart::configure(uart::UART0);
186 systick::delay_ms(50);
187 gpio::set(gpio::GPIOB, 1);
189 nvic::enable_irq(12); // UART0
191 let mut shell = Shell::new(&mut cdc_tx_buf);
193 let mut mx25l = Mx25l::new(gpio::GPIOD, 1 << 0);
195 let mut gps = gps::Gps::new();
197 let mut gps_has_fix = false;
198 let mut gps_has_fix_ticks = 0;
200 let mut heart_icon_timer = Timer::new(1000);
201 let mut gps_icon_timer = Timer::new(500);
203 let mut prev_tap = gps::TimeAndPos::new();
206 let mut tap = gps::TimeAndPos::new();
207 let mut show_time = false;
208 let old_gps_has_fix = gps_has_fix;
210 while gps.update(&mut tap) {
216 gps_has_fix_ticks = systick::now();
219 // Did GPS fix information expire?
220 if gps_has_fix && systick::has_timeout_ms(gps_has_fix_ticks, 1500) {
224 if gps_has_fix && !old_gps_has_fix {
225 display.show_icon(display::Icon::SatelliteBody);
226 display.show_icon(display::Icon::SatelliteWave1);
227 display.show_icon(display::Icon::SatelliteWave2);
228 } else if !gps_has_fix {
229 gps_icon_timer.update(|state| {
231 display.show_icon(display::Icon::SatelliteWave1);
233 } else if state == 2 {
234 display.show_icon(display::Icon::SatelliteWave2);
236 } else if state == 3 {
237 display.hide_icon(display::Icon::SatelliteBody);
238 display.hide_icon(display::Icon::SatelliteWave1);
239 display.hide_icon(display::Icon::SatelliteWave2);
242 display.show_icon(display::Icon::SatelliteBody);
249 if let Some(tm) = Time::from_unix_time(prev_tap.unix_time) {
250 let mut time_s = [b' '; 8];
251 tm.fmt_time(&mut time_s);
254 screen.draw_text(&time_s);
256 display.draw(&screen);
260 heart_icon_timer.update(|state| {
262 display.hide_icon(display::Icon::Heart);
265 display.show_icon(display::Icon::Heart);
272 if reset_requested() {
273 nvic::system_reset();