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 fn enable_interrupts();
46 static mut cdc_tx_buf: Buffer;
50 pub unsafe extern "C" fn _start() -> ! {
56 // Configure pins for I2C0.
57 port::set_af(port::PORTC, 8, 2);
58 port::set_af(port::PORTC, 9, 2);
60 i2c::configure(i2c::I2C0);
62 nvic::disable_irq(8); // I2C0
64 // Configure pin for the display's reset line.
65 gpio::set_direction(gpio::GPIOB, 1 << 16, gpio::Direction::Output);
66 port::set_af(port::PORTB, 16, 1);
68 // Configure pins for UART0.
69 port::set_af(port::PORTE, 20, 4);
70 port::set_af(port::PORTE, 21, 4);
72 // Configure pin for the GPS's reset line.
73 gpio::set_direction(gpio::GPIOB, 1 << 1, gpio::Direction::Output);
74 port::set_af(port::PORTB, 1, 1);
76 // Configure upper right push button.
77 gpio::set_direction(gpio::GPIOA, 1 << 12, gpio::Direction::Input);
78 port::set_af(port::PORTA, 12, 1);
79 port::set_pull(port::PORTA, 12, port::Pull::Up);
83 usb_serial::init(0xf055, 0x635d);
85 cdc_tx_buf.write(b"\n");
88 let mut display = display::Display::new(gpio::GPIOB, 1 << 16, 0x3c);
93 // Hold GPS in reset while configuring its UART.
94 gpio::clear(gpio::GPIOB, 1);
95 systick::delay_ms(50);
96 uart::configure(uart::UART0);
97 systick::delay_ms(50);
98 gpio::set(gpio::GPIOB, 1);
100 nvic::enable_irq(12); // UART0
103 systick::delay_ms(1000);
105 cdc_tx_buf.write(b".\n");
108 if (gpio::get(gpio::GPIOA) & (1 << 12)) == 0 {
109 nvic::system_reset();