bootloader: Stay in bootloader when the middle left push button is held.

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

diff --git a/src/bootloader/main.rs b/src/bootloader/main.rs
index ec71e15abccc9ad0d910320ea72001f2d63213f1..a7755030bb0f5da0bd11d0a1687de17f090cac8b 100644 (file)
--- a/src/bootloader/main.rs
+++ b/src/bootloader/main.rs
@@ -22,7 +22,7 @@
  */
 
 #![no_std]
-#![crate_type="staticlib"]
+#![no_main]
 #[link(name="libcommon.rlib")]
 
 extern crate common;
@@ -44,7 +44,7 @@ extern {
     fn enable_interrupts();
     fn disable_interrupts();
 
-    fn jump_to_application(address: u32);
+    fn jump_to_application(address: u32) -> !;
 }
 
 #[cfg(bootloader_type = "intermediate")]
@@ -65,11 +65,17 @@ unsafe fn application_missing() -> bool {
     first_app_word.read() == 0xffffffff
 }
 
+#[cfg(bootloader_type = "intermediate")]
+fn bootloader_requested() -> bool {
+    true
+}
+
+#[cfg(bootloader_type = "final")]
 fn bootloader_requested() -> bool {
     let start_ticks = systick::now();
 
     while !systick::has_timeout_ms(start_ticks, 3000) {
-        if (gpio::get(gpio::GPIOE) & (1 << 24)) == 0 {
+        if (gpio::get(gpio::GPIOE) & (1 << 31)) == 0 {
             return true;
         }
     }
@@ -77,17 +83,24 @@ fn bootloader_requested() -> bool {
     false
 }
 
+#[inline(never)]
+#[panic_handler]
+fn panic(_info: &core::panic::PanicInfo) -> ! {
+    loop {
+    }
+}
+
 #[no_mangle]
-pub unsafe extern fn main() {
+pub unsafe extern "C" fn _start() -> ! {
     watchdog::disable();
     clock::configure();
     systick::init();
     port::init();
 
-    // Configure lower left push button.
-    gpio::set_direction(gpio::GPIOE, 1 << 24, gpio::Direction::Input);
-    port::set_af(port::PORTE, 24, 1);
-    port::set_pull(port::PORTE, 24, port::Pull::Up);
+    // Configure middle left push button.
+    gpio::set_direction(gpio::GPIOE, 1 << 31, gpio::Direction::Input);
+    port::set_af(port::PORTE, 31, 1);
+    port::set_pull(port::PORTE, 31, port::Pull::Up);
 
     enable_interrupts();
 
@@ -104,5 +117,7 @@ pub unsafe extern fn main() {
 
     disable_interrupts();
 
+    clock::reset();
+
     jump_to_application(APPLICATION_ADDR);
 }