diff --git a/.rustfmt.toml b/.rustfmt.toml
new file mode 100644
index 0000000..4c8d0e1
--- /dev/null
+++ b/.rustfmt.toml
@@ -0,0 +1,4 @@
+imports_granularity = "Crate"
+group_imports = "StdExternalCrate"
+wrap_comments = true
+edition = "2021"
diff --git a/Cargo.toml b/Cargo.toml
index fca9008..10d8438 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -25,3 +25,7 @@ bench = false
 codegen-units = 1 # better optimizations
 debug = true # symbols are nice and they don't increase the size on Flash
 lto = true # better optimizations
+
+[profile.dev.package."*"]
+opt-level = "z"
+debug = true
diff --git a/src/main.rs b/src/main.rs
index 2dfe299..c07e55c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,9 +1,13 @@
 #![no_std]
 #![no_main]
 
-use stm32f3xx_hal::{self as hal, adc, pac, prelude::*};
-
-use {defmt_rtt as _, panic_halt as _};
+use defmt_rtt as _;
+#[allow(deprecated)]
+use hal::pwm::{tim16, tim2, tim3};
+use panic_halt as _;
+use stm32f3xx_hal::{
+    self as hal, adc, flash::FlashExt, gpio::GpioExt, hal::PwmPin, pac, prelude::*, rcc::RccExt,
+};
 
 static POT_MAX: u16 = 4095;
 
@@ -13,7 +17,9 @@ mod motor;
 #[cortex_m_rt::entry]
 fn main() -> ! {
     let sp = pac::Peripherals::take().unwrap();
+    let mut flash = sp.FLASH.constrain();
     let mut rcc = sp.RCC.constrain();
+    let clocks = rcc.cfgr.freeze(&mut flash.acr);
     let mut gpiob = sp.GPIOB.split(&mut rcc.ahb);
     let mut led = gpiob
         .pb2
@@ -21,8 +27,6 @@ fn main() -> ! {
 
     let mut pot = gpiob.pb1.into_analog(&mut gpiob.moder, &mut gpiob.pupdr);
 
-    let mut flash = sp.FLASH.constrain();
-    let clocks = rcc.cfgr.freeze(&mut flash.acr);
     let cp = cortex_m::Peripherals::take().unwrap();
     let mut delay = hal::delay::Delay::new(cp.SYST, clocks);
 
@@ -34,6 +38,7 @@ fn main() -> ! {
         &adc_common,
     );
 
+    cortex_m::asm::wfi();
     loop {
         let pot_out: u16 = padc.read(&mut pot).unwrap_or(0);
         let pot_out = (POT_MAX - pot_out) as f32 / POT_MAX as f32;