From 416e48983c0598caee3071727b9f4f590a65ae1a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Edvin=20=C3=85kerfeldt?= <Edvin Åkerfeldt>
Date: Thu, 3 Dec 2020 13:38:22 +0100
Subject: [PATCH] rtt_timing, F post sizify complete
---
examples/rtt_timing.rs | 22 ++++++++--------------
1 file changed, 8 insertions(+), 14 deletions(-)
diff --git a/examples/rtt_timing.rs b/examples/rtt_timing.rs
index fb6ddfb..96bf43a 100644
--- a/examples/rtt_timing.rs
+++ b/examples/rtt_timing.rs
@@ -6,37 +6,25 @@
#![no_std]
use cortex_m::{asm, peripheral::DWT};
-use panic_rtt_target as _;
-use rtt_target::{rprintln, rtt_init_print};
+use panic_halt as _;
use stm32f4;
#[rtic::app(device = stm32f4)]
const APP: () = {
#[init]
fn init(mut cx: init::Context) {
- rtt_init_print!();
- rprintln!("init");
-
// Initialize (enable) the monotonic timer (CYCCNT)
cx.core.DCB.enable_trace();
cx.core.DWT.enable_cycle_counter();
- rprintln!("start timed_loop");
unsafe {
cx.core.DWT.cyccnt.write(0);
}
- let (start, end) = timed_loop();
- rprintln!(
- "start {}, end {}, diff {}",
- start,
- end,
- end.wrapping_sub(start)
- );
+ let (_start, _end) = timed_loop();
}
#[idle]
fn idle(_cx: idle::Context) -> ! {
- rprintln!("idle");
loop {
continue;
}
@@ -423,6 +411,12 @@ Cycle counter is at 6 cycles.
// > cargo size --example rtt_timing --release --features nightly
//
// [Your answer here]
+/*
+cargo size --example rtt_timing --release --features nightly
+ Finished release [optimized + debuginfo] target(s) in 0.03s
+ text data bss dec hex filename
+ 664 0 0 664 298 rtt_timing
+*/
//
// I was able to get down to:
// > cargo size --example rtt_timing --release --features nightly
--
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