application: Set up pins for the MX25L flash memory.

[gps-watch.git] / src / application / main.rs

diff --git a/src/application/main.rs b/src/application/main.rs
index b11950366e6bbd826081c548b3d25b6ff0fc4547..8f7bd6d1da6cdf5b76a16927b34cd5d0ad92b1b1 100644 (file)
--- a/src/application/main.rs
+++ b/src/application/main.rs
@@ -36,6 +36,7 @@ use common::port;
 use common::gpio;
 use common::nvic;
 use common::i2c;
+use common::spi;
 use common::uart;
 use common::usb_serial;
 use common::display;
@@ -75,6 +76,16 @@ impl Timer {
     }
 }
 
+#[inline(never)]
+#[panic_handler]
+fn panic(_info: &core::panic::PanicInfo) -> ! {
+    loop {
+        if (gpio::get(gpio::GPIOA) & (1 << 12)) == 0 {
+            nvic::system_reset();
+        }
+    }
+}
+
 #[no_mangle]
 pub unsafe extern "C" fn _start() -> ! {
     clock::configure();
@@ -94,6 +105,20 @@ pub unsafe extern "C" fn _start() -> ! {
     gpio::set_direction(gpio::GPIOB, 1 << 16, gpio::Direction::Output);
     port::set_af(port::PORTB, 16, 1);
 
+    // Configure pin for the MX25L's chip select line.
+    gpio::set_direction(gpio::GPIOD, 1 << 0, gpio::Direction::Output);
+    port::set_af(port::PORTD, 0, 1);
+    gpio::set(gpio::GPIOD, 1 << 0);
+
+    // Configure pins for SPI0.
+    port::set_af(port::PORTD, 1, 2);
+    port::set_af(port::PORTD, 2, 5);
+    port::set_af(port::PORTD, 3, 5);
+
+    spi::configure(spi::SPI0);
+
+    nvic::disable_irq(10); // SPI0
+
     // Configure pins for UART0.
     port::set_af(port::PORTE, 20, 4);
     port::set_af(port::PORTE, 21, 4);