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application: Blink heart icon to indicate liveness.
author
Tilman Sauerbeck
<tilman@code-monkey.de>
Tue, 31 Dec 2019 09:51:45 +0000
(10:51 +0100)
committer
Tilman Sauerbeck
<tilman@code-monkey.de>
Mon, 6 Jan 2020 09:45:34 +0000
(10:45 +0100)
src/application/main.rs
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diff --git
a/src/application/main.rs
b/src/application/main.rs
index dbd748c8e28013e25f5c62afdd8f24d68251ba86..74f199906853468fd5c6ac22fd41f25bc333480d 100644
(file)
--- a/
src/application/main.rs
+++ b/
src/application/main.rs
@@
-47,6
+47,32
@@
extern {
static mut cdc_tx_buf: Buffer;
}
static mut cdc_tx_buf: Buffer;
}
+struct Timer {
+ state: u32,
+ delay_ms: u32,
+ last_update_ticks: u32,
+}
+
+impl Timer {
+ pub fn new(delay_ms: u32) -> Timer {
+ Timer {
+ state: 0,
+ delay_ms: delay_ms,
+ last_update_ticks: systick::now(),
+ }
+ }
+
+ pub fn update<F>(&mut self, func: F)
+ where F: FnOnce(u32) -> u32
+ {
+ if systick::has_timeout_ms(self.last_update_ticks, self.delay_ms) {
+ self.state = func(self.state);
+
+ self.last_update_ticks = systick::now();
+ }
+ }
+}
+
#[no_mangle]
pub unsafe extern "C" fn _start() -> ! {
clock::configure();
#[no_mangle]
pub unsafe extern "C" fn _start() -> ! {
clock::configure();
@@
-102,12
+128,24
@@
pub unsafe extern "C" fn _start() -> ! {
let mut gps = gps::Gps::new();
let mut gps = gps::Gps::new();
+ let mut heart_icon_timer = Timer::new(1000);
+
loop {
let mut tap = gps::TimeAndPos::new();
while gps.update(&mut tap) {
}
loop {
let mut tap = gps::TimeAndPos::new();
while gps.update(&mut tap) {
}
+ heart_icon_timer.update(|state| {
+ if state == 1 {
+ display.hide_icon(display::Icon::Heart);
+ 0
+ } else {
+ display.show_icon(display::Icon::Heart);
+ 1
+ }
+ });
+
if (gpio::get(gpio::GPIOA) & (1 << 12)) == 0 {
nvic::system_reset();
}
if (gpio::get(gpio::GPIOA) & (1 << 12)) == 0 {
nvic::system_reset();
}