diff --git a/src/application.rs b/src/application.rs
index d6a64e9..624b5e4 100644
--- a/src/application.rs
+++ b/src/application.rs
@@ -1,5 +1,4 @@
 use arrayvec::ArrayString;
-use core::convert::Infallible;
 use core::fmt::Write;
 use cortex_m::asm;
 use cortex_m_rt::{entry, exception};
@@ -8,9 +7,8 @@ use embedded_graphics::{
     prelude::*, primitives::rectangle::Rectangle, style::PrimitiveStyleBuilder,
     style::TextStyleBuilder,
 };
-use embedded_hal::blocking::spi;
+
 use embedded_hal::digital::v2::{InputPin, OutputPin};
-use embedded_hal::Qei;
 use profont::{ProFont12Point, ProFont9Point};
 use rtt_target::{rprintln, rtt_init_print};
 use st7735_lcd::Orientation;
@@ -26,50 +24,34 @@ use stm32f1xx_hal::{
 };
 use tinybmp::Bmp;
 
-pub struct App<BLed, SPI, DispCS, DispDC, DispRST, MaxCS, QEI>
-where
-    BLed: OutputPin,
-    SPI: spi::Transfer<u8> + spi::Write<u8>,
-    DispCS: OutputPin,
-    DispDC: OutputPin,
-    DispRST: OutputPin,
-    MaxCS: OutputPin,
-    QEI: Qei,
-{
+type AppSPI = Spi<
+    pac::SPI1,
+    Spi1NoRemap,
+    (
+        gpioa::PA5<Alternate<PushPull>>,
+        gpioa::PA6<Input<Floating>>,
+        gpioa::PA7<Alternate<PushPull>>,
+    ),
+>;
+
+type AppQEI = qei::Qei<
+    pac::TIM3,
+    Tim3PartialRemap,
+    (gpiob::PB4<Input<Floating>>, gpiob::PB5<Input<Floating>>),
+>;
+
+pub struct App {
     delay: Delay,
-    board_led: BLed,
-    spi: SPI,
-    disp_cs: DispCS,
-    disp_dc: DispDC,
-    disp_rst: DispRST,
-    max_cs: MaxCS,
-    qei: QEI,
+    board_led: gpioc::PC13<Output<PushPull>>,
+    spi: AppSPI,
+    disp_cs: gpioa::PA0<Output<PushPull>>,
+    disp_dc: gpioa::PA4<Output<PushPull>>,
+    disp_rst: gpioa::PA1<Output<PushPull>>,
+    max_cs: gpioa::PA9<Output<PushPull>>,
+    qei: AppQEI,
 }
 
-pub fn setup(
-    cp: cortex_m::peripheral::Peripherals,
-    dp: stm32::Peripherals,
-) -> App<
-    gpioc::PC13<Output<PushPull>>,
-    Spi<
-        pac::SPI1,
-        Spi1NoRemap,
-        (
-            gpioa::PA5<Alternate<PushPull>>,
-            gpioa::PA6<Input<Floating>>,
-            gpioa::PA7<Alternate<PushPull>>,
-        ),
-    >,
-    gpioa::PA0<Output<PushPull>>,
-    gpioa::PA4<Output<PushPull>>,
-    gpioa::PA1<Output<PushPull>>,
-    gpioa::PA9<Output<PushPull>>,
-    qei::Qei<
-        pac::TIM3,
-        Tim3PartialRemap,
-        (gpiob::PB4<Input<Floating>>, gpiob::PB5<Input<Floating>>),
-    >,
-> {
+pub fn setup(cp: cortex_m::peripheral::Peripherals, dp: stm32::Peripherals) -> App {
     // Take ownership over the raw flash and rcc devices and convert them into the corresponding
     // HAL structs
     let mut flash = dp.FLASH.constrain();
@@ -91,9 +73,9 @@ pub fn setup(
 
     // Configure gpio C pin 13 as a push-pull output. The `crh` register is passed to the function
     // in order to configure the port. For pins 0-7, crl should be passed instead.
-    let mut led = gpioc.pc13.into_push_pull_output(&mut gpioc.crh);
+    let led = gpioc.pc13.into_push_pull_output(&mut gpioc.crh);
 
-    let mut delay = Delay::new(cp.SYST, clocks);
+    let delay = Delay::new(cp.SYST, clocks);
 
     let gpiob = dp.GPIOB.split(&mut rcc.apb2);
     let mut afio = dp.AFIO.constrain(&mut rcc.apb2);
@@ -145,21 +127,12 @@ pub fn setup(
     }
 }
 
-impl<BLed, SPI, DispCS, DispDC, DispRST, MaxCS, QEI>
-    App<BLed, SPI, DispCS, DispDC, DispRST, MaxCS, QEI>
-where
-    BLed: OutputPin,
-    SPI: spi::Transfer<u8> + spi::Write<u8>,
-    DispCS: OutputPin,
-    DispDC: OutputPin,
-    DispRST: OutputPin,
-    MaxCS: OutputPin,
-    QEI: Qei,
-{
+impl App {
     pub fn run(mut self) -> ! {
         let mut disp =
             st7735_lcd::ST7735::new(self.spi, self.disp_dc, self.disp_rst, true, false, 160, 128);
-        self.disp_cs.set_low().ok().unwrap();
+        self.disp_cs.set_low().unwrap();
+
         disp.init(&mut self.delay).unwrap();
         disp.set_orientation(&Orientation::LandscapeSwapped)
             .unwrap();
diff --git a/src/main.rs b/src/main.rs
index 391e47f..68ead16 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -27,6 +27,7 @@ use tinybmp::Bmp;
 
 mod application;
 mod max6675;
+mod profiles;
 
 #[entry]
 fn main() -> ! {
diff --git a/src/profiles.rs b/src/profiles.rs
new file mode 100644
index 0000000..d96388a
--- /dev/null
+++ b/src/profiles.rs
@@ -0,0 +1,94 @@
+pub struct ReflowProfile {
+    name: &'static str,
+    points: [ProfilePoint; 6],
+}
+
+pub struct ProfilePoint {
+    time: f32,
+    temp: f32,
+}
+
+impl ReflowProfile {
+    pub fn get_name(&self) -> &'static str {
+        self.name
+    }
+
+    pub fn get_temp(&self, time: f32) -> f32 {
+        let mut pos = 0;
+        while time > self.points[pos].time && pos < 6 {
+            pos += 1;
+        }
+
+        if pos == 0 {
+            self.points[0].temp
+        } else if pos == 6 {
+            self.points[5].temp
+        } else {
+            let delta = (self.points[pos].temp - self.points[pos - 1].temp)
+                / (self.points[pos].time - self.points[pos - 1].time);
+
+            (time - self.points[pos - 1].time) * delta
+        }
+    }
+}
+
+pub const REFLOW_PROFILES: [ReflowProfile; 2] = [
+    ReflowProfile {
+        name: "Profile 1",
+        points: [
+            ProfilePoint {
+                time: 0f32,
+                temp: 0f32,
+            },
+            ProfilePoint {
+                time: 0f32,
+                temp: 0f32,
+            },
+            ProfilePoint {
+                time: 0f32,
+                temp: 0f32,
+            },
+            ProfilePoint {
+                time: 0f32,
+                temp: 0f32,
+            },
+            ProfilePoint {
+                time: 0f32,
+                temp: 0f32,
+            },
+            ProfilePoint {
+                time: 0f32,
+                temp: 0f32,
+            },
+        ],
+    },
+    ReflowProfile {
+        name: "Profile 2",
+        points: [
+            ProfilePoint {
+                time: 0f32,
+                temp: 0f32,
+            },
+            ProfilePoint {
+                time: 0f32,
+                temp: 0f32,
+            },
+            ProfilePoint {
+                time: 0f32,
+                temp: 0f32,
+            },
+            ProfilePoint {
+                time: 0f32,
+                temp: 0f32,
+            },
+            ProfilePoint {
+                time: 0f32,
+                temp: 0f32,
+            },
+            ProfilePoint {
+                time: 0f32,
+                temp: 0f32,
+            },
+        ],
+    },
+];