src/pwm.rs

/*!
  # Pulse width modulation

  Numerous stm32 timers can be used to output pulse width modulated
  signals on a variety of pins.  The timers support up to 4
  simultaneous pwm outputs in separate `Channels`.  These channels
  share a period and resolution, but can have a different duty cycle.
  All pins on a shared channel have the exact same output.

  ## Creating the (unconfigured) channels

  Before we connect any pins, we need to convert our timer peripheral
  into a set of channels.  We may only be interested in using one or
  two of these channels, so we can simply ignore them with `_` when we
  destructure.

  ```
    // (Other imports omitted)
    use stm32f3xx-hal::{pwm::tim3, time::rate::*};

    let dp = stm32f303::Peripherals::take().unwrap();

    let mut flash = dp.FLASH.constrain();
    let mut rcc = dp.RCC.constrain();
    let clocks = rcc.cfgr.freeze(&mut flash.acr);

    // Set the resolution of our duty cycle to 9000 and our period to
    // 50Hz.
    let mut (c1_no_pins, _, _, c4_no_pins) =
        tim3(device.TIM3, 9000, 50.Hz(), clocks);
  ```

  In this case, we're only going to use channel 1 and channel 4.
  Currently we can't enable these timers, because they don't have any
  pins, so the following wouldn't compile.


  ```
    // DOES NOT COMPILE
    c1_no_pins.enable();
    c4_no_pins.enable();
  ```

  ## Connecting our pins and enabling the channels

  From here we can connect as many compatible pins as we like.  Once
  the channels have pins connected they can be enabled.

  ```
    let mut gpioa = dp.GPIOB.split(&mut rcc.ahb);
    let pa6 = gpioa.pa6.into_af2(&mut gpioa.moder, &mut gpioa.afrl);

    let mut gpiob = dp.GPIOB.split(&mut rcc.ahb);
    let pb1 = gpiob.pb1.into_af2(&mut gpiob.moder, &mut gpiob.afrl);
    let pb4 = gpiob.pb4.into_af2(&mut gpiob.moder, &mut gpiob.afrl);

    let mut ch1 = ch1_no_pins
        .output_to_pa6(pa6)
        .output_to_pb4(pb4);

    let mut ch4 = ch4_no_pins
        .output_to_pb1(pb1);

    ch1.enable();
    ch4.enable();
  ```

  All three pins will output a 50Hz period. PA6 and PB4 will share a
  duty cycle, but the duty cycle for PB1 can be controlled
  independently.

  ```
    // Affect PA6 and PB4
    ch1.set_duty_cycle(1000);

    // Affect only PB1
    ch4.set_duty_cycle(2000);
  ```

  ## Single channel timers

  Timers that only have only one channel do not return a tuple, and
  instead return the (unconfigured) channel directly.

  ```
    // (Other imports omitted)
    use stm32f3xx-hal::{pwm::tim16, time::rate::*};

    let dp = stm32f303::Peripherals::take().unwrap();

    let mut flash = dp.FLASH.constrain();
    let mut rcc = dp.RCC.constrain();
    let clocks = rcc.cfgr.freeze(&mut flash.acr);

    // Set the resolution of our duty cycle to 9000 and our period to
    // 50Hz.
    let mut c1_no_pins = tim16(device.TIM3, 9000, 50.Hz(), clocks);
  ```

  ## Complementary timers

  Certain timers have complementary outputs.  Currently, channels can
  output to _either_ pins used for standard or complementary pins (and
  do not exhibit complementary behaviors).  Most of the time this will
  be totally invisible.

  In this example, we use a complementary pin in the same way we'd use
  any other pwm channel.

  ```
    // (Other imports omitted)
    use stm32f3xx-hal::{pwm::tim1, time::rate::*};

    let dp = stm32f303::Peripherals::take().unwrap();

    let mut flash = dp.FLASH.constrain();
    let mut rcc = dp.RCC.constrain();
    let clocks = rcc.cfgr.freeze(&mut flash.acr);

    // Set the resolution of our duty cycle to 9000 and our period to
    // 50Hz.
    let mut (ch1_no_pins, _, _, _) = tim1(device.TIM3, 9000, 50.Hz(), clocks);

    let mut gpioa = dp.GPIOB.split(&mut rcc.ahb);
    let pa7 = gpioa.pa7.into_af6(&mut gpioa.moder, &mut gpioa.afrl);

    let mut ch1 = ch1_no_pins.output_to(pa7);
    ch1.enable();
  ```

  We used this channel/pin exactly like any previous example.

  However, we cannot use standard and complementary pins
  simultaneously.  Luckily, typestates enforce this for us.

  ```
    ...

    let mut gpioa = dp.GPIOB.split(&mut rcc.ahb);
    let pa7 = gpioa.pa7.into_af6(&mut gpioa.moder, &mut gpioa.afrl);
    let pa8 = gpioa.pa8.into_af6(&mut gpioa.moder, &mut gpioa.afrl);

    let mut ch1 = ch1_no_pins
        .output_to(pa7)
        // DOES NOT COMPILE
        .output_to(pa8);
  ```

  Once we've connected a complementary pin (PA7) we are now _only_
  allowed to use other complementary pins.  PA8 is a valid choice if
  we have no pins in use, but it cannot be used once we've used PA7.

  A usage example can be found at [examples/pwm.rs]

  [examples/pwm.rs]: https://github.com/stm32-rs/stm32f3xx-hal/blob/v0.6.1/examples/pwm.rs
*/

// FIXME: this PWM module needs refactoring to ensure that no UB / race conditiotns is caused by unsafe acces to
// mmaped registers.
#![allow(clippy::undocumented_unsafe_blocks)]

use core::marker::PhantomData;

use crate::{
    gpio::{self, gpioa, gpiob},
    hal::PwmPin,
    pac::{TIM15, TIM16, TIM17, TIM2},
    rcc::{Clocks, Enable, Reset},
    time::{fixed_point::FixedPoint, rate::Hertz},
};

#[cfg(any(
    feature = "stm32f302xb",
    feature = "stm32f302xc",
    feature = "stm32f302xd",
    feature = "stm32f302xe",
    feature = "stm32f303xb",
    feature = "stm32f303xc",
    feature = "stm32f303xd",
    feature = "stm32f303xe",
    feature = "stm32f373",
    feature = "stm32f378",
    feature = "stm32f358",
    feature = "stm32f398",
))]
use crate::gpio::gpiod;

#[cfg(any(
    feature = "stm32f302xb",
    feature = "stm32f302xc",
    feature = "stm32f302xd",
    feature = "stm32f302xe",
    feature = "stm32f303xb",
    feature = "stm32f303xc",
    feature = "stm32f303xd",
    feature = "stm32f303xe",
    feature = "stm32f358",
    feature = "stm32f398",
))]
use crate::gpio::gpioe;

#[cfg(any(
    feature = "stm32f318",
    feature = "stm32f302",
    feature = "stm32f303",
    feature = "stm32f373",
    feature = "stm32f378",
    feature = "stm32f334",
    feature = "stm32f358",
    feature = "stm32f398",
))]
use crate::gpio::{gpioc, gpiof};

/// Output Compare Channel 1 of Timer 1 (type state)
#[derive(Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub struct Tim2Ch1 {}
/// Output Compare Channel 2 of Timer 1 (type state)
#[derive(Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub struct Tim2Ch2 {}
/// Output Compare Channel 3 of Timer 1 (type state)
#[derive(Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub struct Tim2Ch3 {}
/// Output Compare Channel 4 of Timer 1 (type state)
#[derive(Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub struct Tim2Ch4 {}

/// Output Compare Channel 1 of Timer 15 (type state)
#[derive(Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub struct Tim15Ch1 {}
/// Output Compare Channel 2 of Timer 15 (type state)
#[derive(Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub struct Tim15Ch2 {}

/// Output Compare Channel 1 of Timer 16 (type state)
#[derive(Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub struct Tim16Ch1 {}

/// Output Compare Channel 1 of Timer 17 (type state)
#[derive(Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub struct Tim17Ch1 {}

/// Type state used to represent a channel that has no pins yet
#[derive(Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub struct NoPins {}
/// Type state used to represent a channel is using regular pins
#[derive(Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub struct WithPins {}
/// Type state used to represent a channel is using (only) complementary pins
#[derive(Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub struct WithNPins {}

/// Representation of a Channel for an abritary timer channel,
/// that also holds a type state for whether or not this channel
/// is using any pins yet.
///
/// If there are no pins supplied, it cannot be enabled.
#[derive(Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
#[allow(clippy::module_name_repetitions)]
pub struct PwmChannel<X, T> {
    timx_chy: PhantomData<X>,
    pin_status: PhantomData<T>,
}

macro_rules! pwm_timer_private {
    ($timx:ident, $TIMx:ty, $res:ty, $pclkz:ident, $enable_break_timer:expr, [$($TIMx_CHy:ident),+], [$($x:ident),+]) => {
        /// Create one or more output channels from a TIM Peripheral
        /// This function requires the maximum resolution of the duty cycle,
        /// the period of the PWM signal and the frozen clock configuration.
        ///
        /// The resolution should be chosen to offer sufficient steps against
        /// your target peripheral.  For example, a servo that can turn from
        /// 0 degrees (2% duty cycle) to 180 degrees (4% duty cycle) might choose
        /// a resolution of 9000.  This allows the servo to be set in increments
        /// of exactly one degree.
        #[allow(unused_parens)]
        #[must_use]
        #[deprecated(since = "0.10.0", note = "needs refactoring and might violate safety rules conflicting with the timer API")]
        pub fn $timx(tim: $TIMx, res: $res, freq: Hertz, clocks: &Clocks) -> ($(PwmChannel<$TIMx_CHy, NoPins>),+) {
            // Power the timer and reset it to ensure a clean state
            // We use unsafe here to abstract away this implementation detail
            // Justification: It is safe because only scopes with mutable references
            // to TIMx should ever modify this bit.
            unsafe {
                <$TIMx>::enable_unchecked();
                <$TIMx>::reset_unchecked();
            }

            // enable auto reload preloader
            tim.cr1.modify(|_, w| w.arpe().set_bit());

            // Set the "resolution" of the duty cycle (ticks before restarting at 0)
            // Oddly this is unsafe for some timers and not others
            //
            // NOTE(write): not all timers are documented in stm32f3, thus marked unsafe.
            // This write uses all bits of this register so there are no unknown side effects.
            #[allow(unused_unsafe)]
            tim.arr.write(|w| unsafe {
                w.arr().bits(res)
            });

            // Set the pre-scaler
            // TODO: This is repeated in the timer/pwm module.
            // It might make sense to move into the clocks as a crate-only property.
            // TODO: ppre1 is used in timer.rs (never ppre2), should this be dynamic?
            let clock_freq = clocks.$pclkz().0 * if clocks.ppre1() == 1 { 1 } else { 2 };
            let prescale_factor = clock_freq / res as u32 / freq.integer();
            // NOTE(write): uses all bits of this register.
            tim.psc.write(|w| w.psc().bits(prescale_factor as u16 - 1));

            // Make the settings reload immediately
            // NOTE(write): write to a state-less register.
            tim.egr.write(|w| w.ug().set_bit());

            // Enable outputs (STM32 Break Timer Specific)
            #[allow(clippy::redundant_closure_call)]
            $enable_break_timer(&tim);

            // Enable the Timer
            tim.cr1.modify(|_, w| w.cen().set_bit());

            // TODO: Passing in the constructor is a bit silly,
            // is there an alternative approach to get this to repeat,
            // even though its not dynamic?
            ($($x { timx_chy: PhantomData, pin_status: PhantomData }),+)
        }
    }
}

macro_rules! pwm_timer_basic {
    ($timx:ident, $TIMx:ty, $res:ty, $pclkz:ident, [$($TIMx_CHy:ident),+], [$($x:ident),+]) => {
        pwm_timer_private!(
            $timx,
            $TIMx,
            $res,
            $pclkz,
            |_| (),
            [$($TIMx_CHy),+],
            [$($x),+]
        );
    }
}

macro_rules! pwm_timer_with_break {
    ($timx:ident, $TIMx:ty, $res:ty, $pclkz:ident, [$($TIMx_CHy:ident),+], [$($x:ident),+]) => {
        pwm_timer_private!(
            $timx,
            $TIMx,
            $res,
            $pclkz,
            |tim: &$TIMx| tim.bdtr.modify(|_, w| w.moe().set_bit()),
            [$($TIMx_CHy),+],
            [$($x),+]
        );
    }
}

macro_rules! pwm_channel_pin {
    ($resulting_state:ident, $TIMx:ident, $TIMx_CHy:ident, $output_to_pzv:ident, $gpioz:ident::$PZv:ident<$AFw:ident>, $ccmrz_output:ident, $ocym:ident, $ocype:ident) => {
        impl PwmChannel<$TIMx_CHy, NoPins> {
            /// Output to a specific pin from a channel that does not yet have
            /// any pins.  This channel cannot be enabled until this method
            /// is called.
            ///
            /// The pin is consumed and cannot be returned.
            #[must_use]
            pub fn $output_to_pzv<Otype>(
                self,
                _p: $gpioz::$PZv<gpio::$AFw<Otype>>,
            ) -> PwmChannel<$TIMx_CHy, $resulting_state> {
                unsafe {
                    (*$TIMx::ptr()).$ccmrz_output().modify(|_, w| {
                        w
                            // Select PWM Mode 1 for CHy
                            .$ocym()
                            .bits(0b0110)
                            // set pre-load enable so that updates to the duty cycle
                            // propagate but _not_ in the middle of a cycle.
                            .$ocype()
                            .set_bit()
                    });
                }
                PwmChannel {
                    timx_chy: PhantomData,
                    pin_status: PhantomData,
                }
            }
        }

        impl PwmChannel<$TIMx_CHy, $resulting_state> {
            /// Output to a specific pin from a channel is already configured
            /// with output pins.  There is no limit to the number of pins that
            /// can be used (as long as they are compatible).
            ///
            /// The pin is consumed and cannot be returned.
            #[must_use]
            pub fn $output_to_pzv<Otype>(
                self,
                _p: $gpioz::$PZv<gpio::$AFw<Otype>>,
            ) -> PwmChannel<$TIMx_CHy, $resulting_state> {
                self
            }
        }
    };
}

macro_rules! pwm_channel1_pin {
    ($TIMx:ident, $TIMx_CHy:ident, $output_to_pzv:ident, $gpioz:ident::$PZv:ident<$AFw:ident>) => {
        pwm_channel_pin!(
            WithPins,
            $TIMx,
            $TIMx_CHy,
            $output_to_pzv,
            $gpioz::$PZv<$AFw>,
            ccmr1_output,
            oc1m,
            oc1pe
        );
    };
}

macro_rules! pwm_channel1n_pin {
    ($TIMx:ident, $TIMx_CHy:ident, $output_to_pzv:ident, $gpioz:ident::$PZv:ident<$AFw:ident>) => {
        pwm_channel_pin!(
            WithNPins,
            $TIMx,
            $TIMx_CHy,
            $output_to_pzv,
            $gpioz::$PZv<$AFw>,
            ccmr1_output,
            oc1m,
            oc1pe
        );
    };
}

macro_rules! pwm_channel2_pin {
    ($TIMx:ident, $TIMx_CHy:ident, $output_to_pzv:ident, $gpioz:ident::$PZv:ident<$AFw:ident>) => {
        pwm_channel_pin!(
            WithPins,
            $TIMx,
            $TIMx_CHy,
            $output_to_pzv,
            $gpioz::$PZv<$AFw>,
            ccmr1_output,
            oc2m,
            oc2pe
        );
    };
}

#[cfg(any(
    feature = "stm32f318",
    feature = "stm32f302",
    feature = "stm32f303",
    feature = "stm32f334",
    feature = "stm32f358",
    feature = "stm32f398"
))]
macro_rules! pwm_channel2n_pin {
    ($TIMx:ident, $TIMx_CHy:ident, $output_to_pzv:ident, $gpioz:ident::$PZv:ident<$AFw:ident>) => {
        pwm_channel_pin!(
            WithNPins,
            $TIMx,
            $TIMx_CHy,
            $output_to_pzv,
            $gpioz::$PZv<$AFw>,
            ccmr1_output,
            oc2m,
            oc2pe
        );
    };
}

macro_rules! pwm_channel3_pin {
    ($TIMx:ident, $TIMx_CHy:ident, $output_to_pzv:ident, $gpioz:ident::$PZv:ident<$AFw:ident>) => {
        pwm_channel_pin!(
            WithPins,
            $TIMx,
            $TIMx_CHy,
            $output_to_pzv,
            $gpioz::$PZv<$AFw>,
            ccmr2_output,
            oc3m,
            oc3pe
        );
    };
}

#[cfg(any(
    feature = "stm32f318",
    feature = "stm32f302",
    feature = "stm32f303",
    feature = "stm32f334",
    feature = "stm32f358",
    feature = "stm32f398"
))]
macro_rules! pwm_channel3n_pin {
    ($TIMx:ident, $TIMx_CHy:ident, $output_to_pzv:ident, $gpioz:ident::$PZv:ident<$AFw:ident>) => {
        pwm_channel_pin!(
            WithNPins,
            $TIMx,
            $TIMx_CHy,
            $output_to_pzv,
            $gpioz::$PZv<$AFw>,
            ccmr2_output,
            oc3m,
            oc3pe
        );
    };
}

macro_rules! pwm_channel4_pin {
    ($TIMx:ident, $TIMx_CHy:ident, $output_to_pzv:ident, $gpioz:ident::$PZv:ident<$AFw:ident>) => {
        pwm_channel_pin!(
            WithPins,
            $TIMx,
            $TIMx_CHy,
            $output_to_pzv,
            $gpioz::$PZv<$AFw>,
            ccmr2_output,
            oc4m,
            oc4pe
        );
    };
}

macro_rules! pwm_pin_for_pwm_channel_private {
    ($state:ident, $TIMx:ident, $TIMx_CHy:ty, $res:ty, $ccx_enable:ident, $ccrx:ident, $ccrq:ident) => {
        impl PwmPin for PwmChannel<$TIMx_CHy, $state> {
            type Duty = $res;

            fn disable(&mut self) {
                unsafe {
                    (*$TIMx::ptr())
                        .ccer
                        .modify(|_, w| w.$ccx_enable().clear_bit());
                }
            }

            fn enable(&mut self) {
                unsafe {
                    (*$TIMx::ptr())
                        .ccer
                        .modify(|_, w| w.$ccx_enable().set_bit());
                }
            }

            fn get_max_duty(&self) -> Self::Duty {
                unsafe { (*$TIMx::ptr()).arr.read().arr().bits() }
            }

            fn get_duty(&self) -> Self::Duty {
                unsafe { (*$TIMx::ptr()).$ccrx().read().$ccrq().bits() }
            }

            fn set_duty(&mut self, duty: Self::Duty) -> () {
                unsafe {
                    (*$TIMx::ptr()).$ccrx().modify(|_, w| w.$ccrq().bits(duty));
                }
            }
        }
    };
}

macro_rules! pwm_pin_for_pwm_channel {
    ($TIMx:ident, $TIMx_CHy:ty, $res:ty, $ccxe:ident, $ccrx:ident, $ccrq:ident) => {
        pwm_pin_for_pwm_channel_private!(WithPins, $TIMx, $TIMx_CHy, $res, $ccxe, $ccrx, $ccrq);
    };
}

macro_rules! pwm_pin_for_pwm_n_channel {
    ($TIMx:ident, $TIMx_CHy:ty, $res:ty, $ccxe:ident, $ccxne:ident, $ccrx:ident, $ccrq:ident) => {
        pwm_pin_for_pwm_channel_private!(WithPins, $TIMx, $TIMx_CHy, $res, $ccxe, $ccrx, $ccrq);

        pwm_pin_for_pwm_channel_private!(WithNPins, $TIMx, $TIMx_CHy, $res, $ccxne, $ccrx, $ccrq);
    };
}

// TIM1

#[cfg(any(
    feature = "stm32f318",
    feature = "stm32f302",
    feature = "stm32f303",
    feature = "stm32f334",
    feature = "stm32f358",
    feature = "stm32f398"
))]
macro_rules! tim1_common {
    () => {
        use crate::pac::TIM1;

        /// Output Compare Channel 1 of Timer 1 (type state)
        pub struct Tim1Ch1 {}
        /// Output Compare Channel 2 of Timer 1 (type state)
        pub struct Tim1Ch2 {}
        /// Output Compare Channel 3 of Timer 1 (type state)
        pub struct Tim1Ch3 {}
        /// Output Compare Channel 4 of Timer 1 (type state)
        pub struct Tim1Ch4 {}

        pwm_timer_with_break!(
            tim1,
            TIM1,
            u16,
            pclk2,
            [Tim1Ch1, Tim1Ch2, Tim1Ch3, Tim1Ch4],
            [PwmChannel, PwmChannel, PwmChannel, PwmChannel]
        );

        // Channels
        pwm_pin_for_pwm_n_channel!(TIM1, Tim1Ch1, u16, cc1e, cc1ne, ccr1, ccr);
        pwm_pin_for_pwm_n_channel!(TIM1, Tim1Ch2, u16, cc2e, cc2ne, ccr2, ccr);
        pwm_pin_for_pwm_n_channel!(TIM1, Tim1Ch3, u16, cc3e, cc3ne, ccr3, ccr);
        pwm_pin_for_pwm_channel!(TIM1, Tim1Ch4, u16, cc4e, ccr4, ccr);

        //Pins
        pwm_channel1_pin!(TIM1, Tim1Ch1, output_to_pa8, gpioa::PA8<AF6>);

        pwm_channel1n_pin!(TIM1, Tim1Ch1, output_to_pa7, gpioa::PA7<AF6>);
        pwm_channel1n_pin!(TIM1, Tim1Ch1, output_to_pa11, gpioa::PA11<AF6>);
        pwm_channel1n_pin!(TIM1, Tim1Ch1, output_to_pb13, gpiob::PB13<AF6>);
        pwm_channel1n_pin!(TIM1, Tim1Ch1, output_to_pc13, gpioc::PC13<AF4>);

        pwm_channel2_pin!(TIM1, Tim1Ch2, output_to_pa9, gpioa::PA9<AF6>);

        pwm_channel2n_pin!(TIM1, Tim1Ch2, output_to_pa12, gpioa::PA12<AF6>);
        pwm_channel2n_pin!(TIM1, Tim1Ch2, output_to_pb0, gpiob::PB0<AF6>);
        pwm_channel2n_pin!(TIM1, Tim1Ch2, output_to_pb14, gpiob::PB14<AF6>);

        pwm_channel3_pin!(TIM1, Tim1Ch3, output_to_pa10, gpioa::PA10<AF6>);

        pwm_channel3n_pin!(TIM1, Tim1Ch3, output_to_pb1, gpiob::PB1<AF6>);
        pwm_channel3n_pin!(TIM1, Tim1Ch3, output_to_pb15, gpiob::PB15<AF4>);
        pwm_channel3n_pin!(TIM1, Tim1Ch3, output_to_pf0, gpiof::PF0<AF6>);

        pwm_channel4_pin!(TIM1, Tim1Ch4, output_to_pa11, gpioa::PA11<AF11>);
    };
}

#[cfg(any(feature = "stm32f334", feature = "stm32f398"))]
macro_rules! tim1_ext1 {
    () => {
        pwm_channel1_pin!(TIM1, Tim1Ch1, output_to_pc0, gpioc::PC0<AF2>);

        pwm_channel2_pin!(TIM1, Tim1Ch2, output_to_pc1, gpioc::PC1<AF2>);

        pwm_channel3_pin!(TIM1, Tim1Ch3, output_to_pc2, gpioc::PC2<AF2>);

        pwm_channel4_pin!(TIM1, Tim1Ch4, output_to_pc3, gpioc::PC3<AF2>);
    };
}

#[cfg(any(
    feature = "stm32f302xb",
    feature = "stm32f302xc",
    feature = "stm32f302xd",
    feature = "stm32f302xe",
    feature = "stm32f303xb",
    feature = "stm32f303xc",
    feature = "stm32f303xd",
    feature = "stm32f303xe",
    feature = "stm32f358",
    feature = "stm32f398"
))]
macro_rules! tim1_ext2 {
    () => {
        pwm_channel1_pin!(TIM1, Tim1Ch1, output_to_pe9, gpioe::PE9<AF2>);

        pwm_channel1n_pin!(TIM1, Tim1Ch1, output_to_pe8, gpioe::PE8<AF2>);

        pwm_channel2_pin!(TIM1, Tim1Ch2, output_to_pe11, gpioe::PE11<AF2>);

        pwm_channel2n_pin!(TIM1, Tim1Ch2, output_to_pe10, gpioe::PE10<AF2>);

        pwm_channel3_pin!(TIM1, Tim1Ch3, output_to_pe13, gpioe::PE13<AF2>);

        pwm_channel3n_pin!(TIM1, Tim1Ch3, output_to_pe12, gpioe::PE12<AF2>);

        pwm_channel4_pin!(TIM1, Tim1Ch4, output_to_pe14, gpioe::PE14<AF2>);
    };
}

// TODO: stm32f301 has TIM1 with ext1
#[cfg(any(
    feature = "stm32f318",
    feature = "stm32f302",
    feature = "stm32f303",
    feature = "stm32f334",
    feature = "stm32f358",
    feature = "stm32f398"
))]
tim1_common!();

#[cfg(any(feature = "stm32f334", feature = "stm32f398"))]
tim1_ext1!();

#[cfg(any(
    feature = "stm32f302xb",
    feature = "stm32f302xc",
    feature = "stm32f302xd",
    feature = "stm32f302xe",
    feature = "stm32f303xb",
    feature = "stm32f303xc",
    feature = "stm32f303xd",
    feature = "stm32f303xe",
    feature = "stm32f358",
    feature = "stm32f398"
))]
tim1_ext2!();

// TIM2

pwm_timer_basic!(
    tim2,
    TIM2,
    u32,
    pclk1,
    [Tim2Ch1, Tim2Ch2, Tim2Ch3, Tim2Ch4],
    [PwmChannel, PwmChannel, PwmChannel, PwmChannel]
);

// Channels
pwm_pin_for_pwm_channel!(TIM2, Tim2Ch1, u32, cc1e, ccr1, ccr);
pwm_pin_for_pwm_channel!(TIM2, Tim2Ch2, u32, cc2e, ccr2, ccr);
pwm_pin_for_pwm_channel!(TIM2, Tim2Ch3, u32, cc3e, ccr3, ccr);
pwm_pin_for_pwm_channel!(TIM2, Tim2Ch4, u32, cc4e, ccr4, ccr);

// Pins
pwm_channel1_pin!(TIM2, Tim2Ch1, output_to_pa0, gpioa::PA0<AF1>);
pwm_channel1_pin!(TIM2, Tim2Ch1, output_to_pa5, gpioa::PA5<AF1>);
pwm_channel1_pin!(TIM2, Tim2Ch1, output_to_pa15, gpioa::PA15<AF1>);
#[cfg(any(
    feature = "stm32f302xb",
    feature = "stm32f302xc",
    feature = "stm32f302xd",
    feature = "stm32f302xe",
    feature = "stm32f303xb",
    feature = "stm32f303xc",
    feature = "stm32f303xd",
    feature = "stm32f303xe",
    feature = "stm32f358",
    feature = "stm32f398"
))]
pwm_channel1_pin!(TIM2, Tim2Ch1, output_to_pd3, gpiod::PD3<AF2>);

pwm_channel2_pin!(TIM2, Tim2Ch2, output_to_pa1, gpioa::PA1<AF1>);
pwm_channel2_pin!(TIM2, Tim2Ch2, output_to_pb3, gpiob::PB3<AF1>);
#[cfg(any(
    feature = "stm32f302xb",
    feature = "stm32f302xc",
    feature = "stm32f302xd",
    feature = "stm32f302xe",
    feature = "stm32f303xb",
    feature = "stm32f303xc",
    feature = "stm32f303xd",
    feature = "stm32f303xe",
    feature = "stm32f358",
    feature = "stm32f398"
))]
pwm_channel2_pin!(TIM2, Tim2Ch2, output_to_pd4, gpiod::PD4<AF2>);

pwm_channel3_pin!(TIM2, Tim2Ch3, output_to_pa2, gpioa::PA2<AF1>);
pwm_channel3_pin!(TIM2, Tim2Ch3, output_to_pa9, gpioa::PA9<AF10>);
pwm_channel3_pin!(TIM2, Tim2Ch3, output_to_pb10, gpiob::PB10<AF1>);
#[cfg(any(
    feature = "stm32f302xb",
    feature = "stm32f302xc",
    feature = "stm32f302xd",
    feature = "stm32f302xe",
    feature = "stm32f303xb",
    feature = "stm32f303xc",
    feature = "stm32f303xd",
    feature = "stm32f303xe",
    feature = "stm32f358",
    feature = "stm32f398"
))]
pwm_channel3_pin!(TIM2, Tim2Ch3, output_to_pd7, gpiod::PD7<AF2>);

pwm_channel4_pin!(TIM2, Tim2Ch4, output_to_pa3, gpioa::PA3<AF1>);
pwm_channel4_pin!(TIM2, Tim2Ch4, output_to_pa10, gpioa::PA10<AF1>);
#[cfg(not(any(feature = "stm32f373", feature = "stm32f378")))]
pwm_channel4_pin!(TIM2, Tim2Ch4, output_to_pb11, gpiob::PB11<AF1>);
#[cfg(any(
    feature = "stm32f302xb",
    feature = "stm32f302xc",
    feature = "stm32f302xd",
    feature = "stm32f302xe",
    feature = "stm32f303xb",
    feature = "stm32f303xc",
    feature = "stm32f303xd",
    feature = "stm32f303xe",
    feature = "stm32f358",
    feature = "stm32f398"
))]
pwm_channel4_pin!(TIM2, Tim2Ch4, output_to_pd6, gpiod::PD6<AF2>);

// TIM3

#[cfg(any(
    feature = "stm32f302",
    feature = "stm32f303",
    feature = "stm32f373",
    feature = "stm32f378",
    feature = "stm32f334",
    feature = "stm32f328",
    feature = "stm32f358",
    feature = "stm32f398"
))]
macro_rules! tim3_common {
    () => {
        use crate::pac::TIM3;

        /// Output Compare Channel 1 of Timer 3 (type state)
        pub struct Tim3Ch1 {}
        /// Output Compare Channel 2 of Timer 3 (type state)
        pub struct Tim3Ch2 {}
        /// Output Compare Channel 3 of Timer 3 (type state)
        pub struct Tim3Ch3 {}
        /// Output Compare Channel 4 of Timer 3 (type state)
        pub struct Tim3Ch4 {}

        pwm_timer_basic!(
            tim3,
            TIM3,
            u16,
            pclk1,
            [Tim3Ch1, Tim3Ch2, Tim3Ch3, Tim3Ch4],
            [PwmChannel, PwmChannel, PwmChannel, PwmChannel]
        );

        // Channels
        pwm_pin_for_pwm_channel!(TIM3, Tim3Ch1, u16, cc1e, ccr1, ccr);
        pwm_pin_for_pwm_channel!(TIM3, Tim3Ch2, u16, cc2e, ccr2, ccr);
        pwm_pin_for_pwm_channel!(TIM3, Tim3Ch3, u16, cc3e, ccr3, ccr);
        pwm_pin_for_pwm_channel!(TIM3, Tim3Ch4, u16, cc4e, ccr4, ccr);

        // Pins
        pwm_channel1_pin!(TIM3, Tim3Ch1, output_to_pa6, gpioa::PA6<AF2>);
        pwm_channel1_pin!(TIM3, Tim3Ch1, output_to_pb4, gpiob::PB4<AF2>);

        pwm_channel2_pin!(TIM3, Tim3Ch2, output_to_pa4, gpioa::PA4<AF2>);
        pwm_channel2_pin!(TIM3, Tim3Ch2, output_to_pa7, gpioa::PA7<AF2>);
        pwm_channel2_pin!(TIM3, Tim3Ch2, output_to_pb5, gpiob::PB5<AF2>);

        pwm_channel3_pin!(TIM3, Tim3Ch3, output_to_pb0, gpiob::PB0<AF2>);

        pwm_channel4_pin!(TIM3, Tim3Ch4, output_to_pb1, gpiob::PB1<AF2>);
        pwm_channel4_pin!(TIM3, Tim3Ch4, output_to_pb7, gpiob::PB7<AF10>);
    };
}

#[cfg(any(
    feature = "stm32f302",
    feature = "stm32f303",
    feature = "stm32f373",
    feature = "stm32f378",
    feature = "stm32f334",
    feature = "stm32f358",
    feature = "stm32f398"
))]
macro_rules! tim3_ext1 {
    () => {
        pwm_channel1_pin!(TIM3, Tim3Ch1, output_to_pc6, gpioc::PC6<AF2>);

        pwm_channel2_pin!(TIM3, Tim3Ch2, output_to_pc7, gpioc::PC7<AF2>);

        pwm_channel3_pin!(TIM3, Tim3Ch3, output_to_pc8, gpioc::PC8<AF2>);

        pwm_channel4_pin!(TIM3, Tim3Ch4, output_to_pc9, gpioc::PC9<AF2>);
    };
}

#[cfg(any(
    feature = "stm32f302xb",
    feature = "stm32f302xc",
    feature = "stm32f302xd",
    feature = "stm32f302xe",
    feature = "stm32f303xb",
    feature = "stm32f303xc",
    feature = "stm32f303xd",
    feature = "stm32f303xe",
    feature = "stm32f358",
    feature = "stm32f398"
))]
macro_rules! tim3_ext2 {
    () => {
        pwm_channel1_pin!(TIM3, Tim3Ch1, output_to_pe2, gpioe::PE6<AF2>);

        pwm_channel2_pin!(TIM3, Tim3Ch2, output_to_pe3, gpioe::PE7<AF2>);

        pwm_channel3_pin!(TIM3, Tim3Ch3, output_to_pe4, gpioe::PE8<AF2>);

        pwm_channel4_pin!(TIM3, Tim3Ch4, output_to_pe5, gpioe::PE9<AF2>);
    };
}

#[cfg(any(
    feature = "stm32f302",
    feature = "stm32f303",
    feature = "stm32f373",
    feature = "stm32f378",
    feature = "stm32f334",
    feature = "stm32f328",
    feature = "stm32f358",
    feature = "stm32f398"
))]
tim3_common!();

#[cfg(any(
    feature = "stm32f302",
    feature = "stm32f303",
    feature = "stm32f373",
    feature = "stm32f378",
    feature = "stm32f334",
    feature = "stm32f358",
    feature = "stm32f398"
))]
tim3_ext1!();

#[cfg(any(
    feature = "stm32f302xb",
    feature = "stm32f302xc",
    feature = "stm32f302xd",
    feature = "stm32f302xe",
    feature = "stm32f303xb",
    feature = "stm32f303xc",
    feature = "stm32f303xd",
    feature = "stm32f303xe",
    feature = "stm32f358",
    feature = "stm32f398"
))]
tim3_ext2!();

#[cfg(feature = "stm32f373")]
pwm_channel2_pin!(TIM3, Tim3Ch2, output_to_pb0, gpiob::PB0<AF10>);

#[cfg(any(feature = "stm32f373", feature = "stm32f378"))]
pwm_channel3_pin!(TIM3, Tim3Ch3, output_to_pb6, gpiob::PB6<AF10>);

// TIM4

#[cfg(any(
    feature = "stm32f302",
    feature = "stm32f303",
    feature = "stm32f373",
    feature = "stm32f378",
    feature = "stm32f358",
    feature = "stm32f398"
))]
macro_rules! tim4_common {
    () => {
        use crate::pac::TIM4;

        /// Output Compare Channel 1 of Timer 4 (type state)
        pub struct Tim4Ch1 {}
        /// Output Compare Channel 2 of Timer 4 (type state)
        pub struct Tim4Ch2 {}
        /// Output Compare Channel 3 of Timer 4 (type state)
        pub struct Tim4Ch3 {}
        /// Output Compare Channel 4 of Timer 4 (type state)
        pub struct Tim4Ch4 {}

        pwm_timer_basic!(
            tim4,
            TIM4,
            u16,
            pclk1,
            [Tim4Ch1, Tim4Ch2, Tim4Ch3, Tim4Ch4],
            [PwmChannel, PwmChannel, PwmChannel, PwmChannel]
        );

        // Channels
        pwm_pin_for_pwm_channel!(TIM4, Tim4Ch1, u16, cc1e, ccr1, ccr);
        pwm_pin_for_pwm_channel!(TIM4, Tim4Ch2, u16, cc2e, ccr2, ccr);
        pwm_pin_for_pwm_channel!(TIM4, Tim4Ch3, u16, cc3e, ccr3, ccr);
        pwm_pin_for_pwm_channel!(TIM4, Tim4Ch4, u16, cc4e, ccr4, ccr);

        // Pins
        pwm_channel1_pin!(TIM4, Tim4Ch1, output_to_pa11, gpioa::PA11<AF10>);
        pwm_channel1_pin!(TIM4, Tim4Ch1, output_to_pb6, gpiob::PB6<AF2>);

        pwm_channel2_pin!(TIM4, Tim4Ch2, output_to_pa12, gpioa::PA12<AF10>);
        pwm_channel2_pin!(TIM4, Tim4Ch2, output_to_pb7, gpiob::PB7<AF2>);

        pwm_channel3_pin!(TIM4, Tim4Ch3, output_to_pa13, gpioa::PA13<AF10>);
        pwm_channel3_pin!(TIM4, Tim4Ch3, output_to_pb8, gpiob::PB8<AF2>);

        pwm_channel4_pin!(TIM4, Tim4Ch4, output_to_pb9, gpiob::PB9<AF2>);
    };
}

#[cfg(any(
    feature = "stm32f302xb",
    feature = "stm32f302xc",
    feature = "stm32f302xd",
    feature = "stm32f302xe",
    feature = "stm32f303xb",
    feature = "stm32f303xc",
    feature = "stm32f303xd",
    feature = "stm32f303xe",
    feature = "stm32f373",
    feature = "stm32f378",
    feature = "stm32f358",
    feature = "stm32f398"
))]
macro_rules! tim4_ext {
    () => {
        pwm_channel1_pin!(TIM4, Tim4Ch1, output_to_pd12, gpiod::PD12<AF2>);

        pwm_channel2_pin!(TIM4, Tim4Ch2, output_to_pd13, gpiod::PD13<AF2>);

        pwm_channel3_pin!(TIM4, Tim4Ch3, output_to_pd14, gpiod::PD14<AF2>);

        pwm_channel4_pin!(TIM4, Tim4Ch4, output_to_pd15, gpiod::PD15<AF2>);
        pwm_channel4_pin!(TIM4, Tim4Ch4, output_to_pf6, gpiof::PF6<AF2>);
    };
}

#[cfg(any(
    feature = "stm32f302",
    feature = "stm32f303",
    feature = "stm32f373",
    feature = "stm32f378",
    feature = "stm32f358",
    feature = "stm32f398"
))]
tim4_common!();

#[cfg(any(
    feature = "stm32f302xb",
    feature = "stm32f302xc",
    feature = "stm32f302xd",
    feature = "stm32f302xe",
    feature = "stm32f303xb",
    feature = "stm32f303xc",
    feature = "stm32f303xd",
    feature = "stm32f303xe",
    feature = "stm32f373",
    feature = "stm32f378",
    feature = "stm32f358",
    feature = "stm32f398"
))]
tim4_ext!();

// TIM5

#[cfg(feature = "stm32f373")]
macro_rules! tim5 {
    () => {
        use crate::pac::TIM5;

        /// Output Compare Channel 1 of Timer 5 (type state)
        pub struct Tim5Ch1 {}
        /// Output Compare Channel 2 of Timer 5 (type state)
        pub struct Tim5Ch2 {}
        /// Output Compare Channel 3 of Timer 5 (type state)
        pub struct Tim5Ch3 {}
        /// Output Compare Channel 4 of Timer 5 (type state)
        pub struct Tim5Ch4 {}

        pwm_timer_basic!(
            tim5,
            TIM5,
            u32,
            pclk1,
            [Tim5Ch1, Tim5Ch2, Tim5Ch3, Tim5Ch4],
            [PwmChannel, PwmChannel, PwmChannel, PwmChannel]
        );

        // Channels
        pwm_pin_for_pwm_channel!(TIM5, Tim5Ch1, u32, cc1e, ccr1, ccr);
        pwm_pin_for_pwm_channel!(TIM5, Tim5Ch2, u32, cc2e, ccr2, ccr);
        pwm_pin_for_pwm_channel!(TIM5, Tim5Ch3, u32, cc3e, ccr3, ccr);
        pwm_pin_for_pwm_channel!(TIM5, Tim5Ch4, u32, cc4e, ccr4, ccr);

        // Pins
        pwm_channel1_pin!(TIM5, Tim5Ch1, output_to_pa0, gpioa::PA0<AF2>);
        pwm_channel1_pin!(TIM5, Tim5Ch1, output_to_pa8, gpioa::PA8<AF2>);
        pwm_channel1_pin!(TIM5, Tim5Ch1, output_to_pc0, gpioc::PC0<AF2>);

        pwm_channel2_pin!(TIM5, Tim5Ch2, output_to_pa1, gpioa::PA1<AF2>);
        pwm_channel2_pin!(TIM5, Tim5Ch2, output_to_pa11, gpioa::PA11<AF2>);
        pwm_channel2_pin!(TIM5, Tim5Ch2, output_to_pc1, gpioc::PC1<AF2>);

        pwm_channel3_pin!(TIM5, Tim5Ch3, output_to_pa2, gpioa::PA2<AF2>);
        pwm_channel3_pin!(TIM5, Tim5Ch3, output_to_pa12, gpioa::PA12<AF2>);
        pwm_channel3_pin!(TIM5, Tim5Ch3, output_to_pc2, gpioc::PC2<AF2>);

        pwm_channel4_pin!(TIM5, Tim5Ch4, output_to_pa3, gpioa::PA3<AF2>);
        pwm_channel4_pin!(TIM5, Tim5Ch4, output_to_pa13, gpioa::PA13<AF2>);
        pwm_channel4_pin!(TIM5, Tim5Ch4, output_to_pc3, gpioc::PC3<AF2>);
    };
}

// TODO: This timer is also present in stm32f378
#[cfg(feature = "stm32f373")]
tim5!();

// TIM8

#[cfg(any(feature = "stm32f303", feature = "stm32f358", feature = "stm32f398"))]
macro_rules! tim8 {
    () => {
        use crate::pac::TIM8;

        /// Output Compare Channel 1 of Timer 8 (type state)
        pub struct Tim8Ch1 {}
        /// Output Compare Channel 2 of Timer 8 (type state)
        pub struct Tim8Ch2 {}
        /// Output Compare Channel 3 of Timer 8 (type state)
        pub struct Tim8Ch3 {}
        /// Output Compare Channel 4 of Timer 8 (type state)
        pub struct Tim8Ch4 {}

        pwm_timer_with_break!(
            tim8,
            TIM8,
            u16,
            pclk2,
            [Tim8Ch1, Tim8Ch2, Tim8Ch3, Tim8Ch4],
            [PwmChannel, PwmChannel, PwmChannel, PwmChannel]
        );

        // Channels
        pwm_pin_for_pwm_n_channel!(TIM8, Tim8Ch1, u16, cc1e, cc1ne, ccr1, ccr);
        pwm_pin_for_pwm_n_channel!(TIM8, Tim8Ch2, u16, cc2e, cc2ne, ccr2, ccr);
        pwm_pin_for_pwm_n_channel!(TIM8, Tim8Ch3, u16, cc3e, cc3ne, ccr3, ccr);
        pwm_pin_for_pwm_channel!(TIM8, Tim8Ch4, u16, cc4e, ccr4, ccr);

        //Pins
        pwm_channel1_pin!(TIM8, Tim8Ch1, output_to_pa15, gpioa::PA15<AF2>);
        pwm_channel1_pin!(TIM8, Tim8Ch1, output_to_pb6, gpiob::PB6<AF2>);
        pwm_channel1_pin!(TIM8, Tim8Ch1, output_to_pc6, gpioc::PC6<AF4>);

        pwm_channel1n_pin!(TIM8, Tim8Ch1, output_to_pa7, gpioa::PA7<AF4>);
        pwm_channel1n_pin!(TIM8, Tim8Ch1, output_to_pb3, gpiob::PB3<AF4>);
        pwm_channel1n_pin!(TIM8, Tim8Ch1, output_to_pc10, gpioc::PC10<AF4>);

        pwm_channel2_pin!(TIM8, Tim8Ch2, output_to_pa14, gpioa::PA14<AF5>);
        pwm_channel2_pin!(TIM8, Tim8Ch2, output_to_pb8, gpiob::PB8<AF10>);
        pwm_channel2_pin!(TIM8, Tim8Ch2, output_to_pc7, gpioc::PC7<AF4>);

        pwm_channel2n_pin!(TIM8, Tim8Ch2, output_to_pb0, gpiob::PB0<AF4>);
        pwm_channel2n_pin!(TIM8, Tim8Ch2, output_to_pb4, gpiob::PB4<AF4>);
        pwm_channel2n_pin!(TIM8, Tim8Ch2, output_to_pc11, gpioc::PC11<AF4>);

        pwm_channel3_pin!(TIM8, Tim8Ch3, output_to_pb9, gpiob::PB9<AF10>);
        pwm_channel3_pin!(TIM8, Tim8Ch3, output_to_pc8, gpioc::PC8<AF4>);

        pwm_channel3n_pin!(TIM8, Tim8Ch3, output_to_pb1, gpiob::PB1<AF4>);
        pwm_channel3n_pin!(TIM8, Tim8Ch3, output_to_pb5, gpiob::PB5<AF3>);
        pwm_channel3n_pin!(TIM8, Tim8Ch3, output_to_pc12, gpioc::PC12<AF4>);

        pwm_channel4_pin!(TIM8, Tim8Ch4, output_to_pc9, gpioc::PC9<AF4>);
    };
}

#[cfg(any(feature = "stm32f303", feature = "stm32f358", feature = "stm32f398"))]
tim8!();

#[cfg(any(
    feature = "stm32f303xb",
    feature = "stm32f303xc",
    feature = "stm32f303xd",
    feature = "stm32f303xe",
    feature = "stm32f358",
    feature = "stm32f398"
))]
pwm_channel4_pin!(TIM8, Tim8Ch4, output_to_pd1, gpiod::PD1<AF4>);

// TIM12

#[cfg(feature = "stm32f373")]
macro_rules! tim12 {
    () => {
        use crate::pac::TIM12;

        /// Output Compare Channel 1 of Timer 12 (type state)
        pub struct Tim12Ch1 {}
        /// Output Compare Channel 2 of Timer 12 (type state)
        pub struct Tim12Ch2 {}
        /// Output Compare Channel 3 of Timer 12 (type state)
        pub struct Tim12Ch3 {}
        /// Output Compare Channel 4 of Timer 12 (type state)
        pub struct Tim12Ch4 {}

        pwm_timer_basic!(
            tim12,
            TIM12,
            u16,
            pclk1,
            [Tim12Ch1, Tim12Ch2],
            [PwmChannel, PwmChannel]
        );

        // Channels
        pwm_pin_for_pwm_channel!(TIM12, Tim12Ch1, u16, cc1e, ccr1, ccr);
        pwm_pin_for_pwm_channel!(TIM12, Tim12Ch2, u16, cc2e, ccr2, ccr);

        // Pins
        pwm_channel1_pin!(TIM12, Tim12Ch1, output_to_pa4, gpioa::PA4<AF10>);
        pwm_channel1_pin!(TIM12, Tim12Ch1, output_to_pa14, gpioa::PA14<AF10>);
        pwm_channel1_pin!(TIM12, Tim12Ch1, output_to_pb14, gpiob::PB14<AF10>);

        pwm_channel2_pin!(TIM12, Tim12Ch2, output_to_pa5, gpioa::PA5<AF10>);
        pwm_channel2_pin!(TIM12, Tim12Ch2, output_to_pa15, gpioa::PA15<AF10>);
        pwm_channel2_pin!(TIM12, Tim12Ch2, output_to_pb15, gpiob::PB15<AF10>);
    };
}

// TODO: This timer is also present in stm32f378
#[cfg(feature = "stm32f373")]
tim12!();

// TIM13

#[cfg(feature = "stm32f373")]
macro_rules! tim13 {
    () => {
        use crate::pac::TIM13;

        /// Output Compare Channel 1 of Timer 13 (type state)
        pub struct Tim13Ch1 {}
        /// Output Compare Channel 2 of Timer 13 (type state)
        pub struct Tim13Ch2 {}
        /// Output Compare Channel 3 of Timer 13 (type state)
        pub struct Tim13Ch3 {}
        /// Output Compare Channel 4 of Timer 13 (type state)
        pub struct Tim13Ch4 {}

        pwm_timer_basic!(tim13, TIM13, u16, pclk1, [Tim13Ch1], [PwmChannel]);

        // Channels
        pwm_pin_for_pwm_channel!(TIM13, Tim13Ch1, u16, cc1e, ccr1, ccr);

        // Pins
        pwm_channel1_pin!(TIM13, Tim13Ch1, output_to_pa6, gpioa::PA6<AF9>);
        pwm_channel1_pin!(TIM13, Tim13Ch1, output_to_pa9, gpioa::PA9<AF2>);
        pwm_channel1_pin!(TIM13, Tim13Ch1, output_to_pb3, gpiob::PB3<AF9>);
        pwm_channel1_pin!(TIM13, Tim13Ch1, output_to_pc4, gpioc::PC4<AF2>);
    };
}

#[cfg(feature = "stm32f373")]
tim13!();

// TIM14

#[cfg(feature = "stm32f373")]
macro_rules! tim14 {
    () => {
        use crate::pac::TIM14;

        /// Output Compare Channel 1 of Timer 14 (type state)
        pub struct Tim14Ch1 {}
        /// Output Compare Channel 2 of Timer 14 (type state)
        pub struct Tim14Ch2 {}
        /// Output Compare Channel 3 of Timer 14 (type state)
        pub struct Tim14Ch3 {}
        /// Output Compare Channel 4 of Timer 14 (type state)
        pub struct Tim14Ch4 {}

        pwm_timer_basic!(tim14, TIM14, u16, pclk1, [Tim14Ch1], [PwmChannel]);

        // Channels
        pwm_pin_for_pwm_channel!(TIM14, Tim14Ch1, u16, cc1e, ccr1, ccr);

        // Pins
        pwm_channel1_pin!(TIM14, Tim14Ch1, output_to_pa5, gpioa::PA5<AF9>);
        pwm_channel1_pin!(TIM14, Tim14Ch1, output_to_pa7, gpioa::PA7<AF9>);
        pwm_channel1_pin!(TIM14, Tim14Ch1, output_to_pa10, gpioa::PA10<AF9>);
        pwm_channel1_pin!(TIM14, Tim14Ch1, output_to_pf9, gpiof::PF9<AF2>);
    };
}

// TODO: This timer is also present in stm32f378
#[cfg(feature = "stm32f373")]
tim14!();

// TIM15

pwm_timer_with_break!(
    tim15,
    TIM15,
    u16,
    pclk2,
    [Tim15Ch1, Tim15Ch2],
    [PwmChannel, PwmChannel]
);

// Channels
pwm_pin_for_pwm_n_channel!(TIM15, Tim15Ch1, u16, cc1e, cc1ne, ccr1, ccr);
pwm_pin_for_pwm_channel!(TIM15, Tim15Ch2, u16, cc2e, ccr2, ccr);

// Pins
pwm_channel1_pin!(TIM15, Tim15Ch1, output_to_pa2, gpioa::PA2<AF9>);
#[cfg(any(feature = "stm32f373", feature = "stm32f378"))]
pwm_channel1_pin!(TIM15, Tim15Ch1, output_to_pb6, gpiob::PB6<AF9>);
pwm_channel1_pin!(TIM15, Tim15Ch1, output_to_pb14, gpiob::PB14<AF1>);
#[cfg(any(
    feature = "stm32f302xb",
    feature = "stm32f302xc",
    feature = "stm32f302xd",
    feature = "stm32f302xe",
    feature = "stm32f303xb",
    feature = "stm32f303xc",
    feature = "stm32f303xd",
    feature = "stm32f303xe",
    feature = "stm32f358",
    feature = "stm32f398"
))]
pwm_channel1_pin!(TIM15, Tim15Ch1, output_to_pf9, gpiof::PF9<AF3>);

pwm_channel1n_pin!(TIM15, Tim15Ch1, output_to_pa1, gpioa::PA1<AF9>);
pwm_channel1n_pin!(TIM15, Tim15Ch1, output_to_pb15, gpiob::PB15<AF2>);
pwm_channel2_pin!(TIM15, Tim15Ch2, output_to_pa3, gpioa::PA3<AF9>);
#[cfg(any(feature = "stm32f373", feature = "stm32f378"))]
pwm_channel2_pin!(TIM15, Tim15Ch2, output_to_pb7, gpiob::PB7<AF9>);
pwm_channel2_pin!(TIM15, Tim15Ch2, output_to_pb15, gpiob::PB15<AF2>);
#[cfg(any(
    feature = "stm32f302xb",
    feature = "stm32f302xc",
    feature = "stm32f302xd",
    feature = "stm32f302xe",
    feature = "stm32f303xb",
    feature = "stm32f303xc",
    feature = "stm32f303xd",
    feature = "stm32f303xe",
    feature = "stm32f358",
    feature = "stm32f398"
))]
pwm_channel2_pin!(TIM15, Tim15Ch2, output_to_pf10, gpiof::PF10<AF3>);

// TIM16

pwm_timer_with_break!(tim16, TIM16, u16, pclk2, [Tim16Ch1], [PwmChannel]);

// Channels
pwm_pin_for_pwm_n_channel!(TIM16, Tim16Ch1, u16, cc1e, cc1ne, ccr1, ccr);

// Pins
pwm_channel1_pin!(TIM16, Tim16Ch1, output_to_pa9, gpioa::PA6<AF1>);
pwm_channel1_pin!(TIM16, Tim16Ch1, output_to_pa12, gpioa::PA12<AF1>);
pwm_channel1_pin!(TIM16, Tim16Ch1, output_to_pb4, gpiob::PB4<AF1>);
pwm_channel1_pin!(TIM16, Tim16Ch1, output_to_pb8, gpiob::PB8<AF1>);
#[cfg(any(
    feature = "stm32f302xb",
    feature = "stm32f302xc",
    feature = "stm32f302xd",
    feature = "stm32f302xe",
    feature = "stm32f303xb",
    feature = "stm32f303xc",
    feature = "stm32f303xd",
    feature = "stm32f303xe",
    feature = "stm32f358",
    feature = "stm32f398"
))]
pwm_channel1_pin!(TIM16, Tim16Ch1, output_to_pe0, gpioe::PE0<AF4>);

pwm_channel1n_pin!(TIM16, Tim16Ch1, output_to_pa13, gpioa::PA13<AF1>);
pwm_channel1n_pin!(TIM16, Tim16Ch1, output_to_pb6, gpiob::PB6<AF1>);

// TIM17

pwm_timer_with_break!(tim17, TIM17, u16, pclk2, [Tim17Ch1], [PwmChannel]);

// Channels
pwm_pin_for_pwm_n_channel!(TIM17, Tim17Ch1, u16, cc1e, cc1ne, ccr1, ccr);

// Pins
pwm_channel1_pin!(TIM17, Tim17Ch1, output_to_pa7, gpioa::PA7<AF1>);
pwm_channel1_pin!(TIM17, Tim17Ch1, output_to_pb5, gpiob::PB5<AF10>);
pwm_channel1_pin!(TIM17, Tim17Ch1, output_to_pb9, gpiob::PB9<AF1>);
#[cfg(any(
    feature = "stm32f302xb",
    feature = "stm32f302xc",
    feature = "stm32f302xd",
    feature = "stm32f302xe",
    feature = "stm32f303xb",
    feature = "stm32f303xc",
    feature = "stm32f303xd",
    feature = "stm32f303xe",
    feature = "stm32f358",
    feature = "stm32f398"
))]
pwm_channel1_pin!(TIM17, Tim17Ch1, output_to_pe1, gpioe::PE1<AF4>);

pwm_channel1n_pin!(TIM17, Tim17Ch1, output_to_pa13, gpioa::PA13<AF1>);

// TIM19

#[cfg(feature = "stm32f373")]
macro_rules! tim19 {
    () => {
        use crate::pac::TIM19;

        /// Output Compare Channel 1 of Timer 19 (type state)
        pub struct Tim19Ch1 {}
        /// Output Compare Channel 2 of Timer 19 (type state)
        pub struct Tim19Ch2 {}
        /// Output Compare Channel 3 of Timer 19 (type state)
        pub struct Tim19Ch3 {}
        /// Output Compare Channel 4 of Timer 19 (type state)
        pub struct Tim19Ch4 {}

        pwm_timer_basic!(
            tim19,
            TIM19,
            u16,
            pclk2,
            [Tim19Ch1, Tim19Ch2, Tim19Ch3, Tim19Ch4],
            [PwmChannel, PwmChannel, PwmChannel, PwmChannel]
        );

        // Channels
        pwm_pin_for_pwm_channel!(TIM19, Tim19Ch1, u16, cc1e, ccr1, ccr);
        pwm_pin_for_pwm_channel!(TIM19, Tim19Ch2, u16, cc2e, ccr2, ccr);
        pwm_pin_for_pwm_channel!(TIM19, Tim19Ch3, u16, cc3e, ccr3, ccr);
        pwm_pin_for_pwm_channel!(TIM19, Tim19Ch4, u16, cc4e, ccr4, ccr);

        // Pins
        pwm_channel1_pin!(TIM19, Tim19Ch1, output_to_pa0, gpioa::PA0<AF11>);
        pwm_channel1_pin!(TIM19, Tim19Ch1, output_to_pb6, gpiob::PB6<AF11>);
        pwm_channel1_pin!(TIM19, Tim19Ch1, output_to_pc10, gpioc::PC10<AF2>);

        pwm_channel2_pin!(TIM19, Tim19Ch2, output_to_pa1, gpioa::PA1<AF11>);
        pwm_channel2_pin!(TIM19, Tim19Ch2, output_to_pb7, gpiob::PB7<AF11>);
        pwm_channel2_pin!(TIM19, Tim19Ch2, output_to_pc11, gpioc::PC11<AF2>);

        pwm_channel3_pin!(TIM19, Tim19Ch3, output_to_pa2, gpioa::PA2<AF11>);
        pwm_channel3_pin!(TIM19, Tim19Ch3, output_to_pb8, gpiob::PB8<AF11>);
        pwm_channel3_pin!(TIM19, Tim19Ch3, output_to_pc12, gpioc::PC12<AF2>);

        pwm_channel4_pin!(TIM19, Tim19Ch4, output_to_pa3, gpioa::PA3<AF11>);
        pwm_channel4_pin!(TIM19, Tim19Ch4, output_to_pb9, gpiob::PB9<AF11>);
        pwm_channel4_pin!(TIM19, Tim19Ch4, output_to_pd0, gpiod::PD0<AF2>);
    };
}

// TODO: This timer is also present in stm32f378
#[cfg(feature = "stm32f373")]
tim19!();

// TIM20
//
#[cfg(feature = "stm32f398")]
macro_rules! tim20 {
    () => {
        use crate::pac::TIM20;

        /// Output Compare Channel 1 of Timer 20 (type state)
        pub struct Tim20Ch1 {}
        /// Output Compare Channel 2 of Timer 20 (type state)
        pub struct Tim20Ch2 {}
        /// Output Compare Channel 3 of Timer 20 (type state)
        pub struct Tim20Ch3 {}
        /// Output Compare Channel 4 of Timer 20 (type state)
        pub struct Tim20Ch4 {}

        pwm_timer_basic!(
            tim20,
            TIM20,
            u16,
            pclk2,
            [Tim20Ch1, Tim20Ch2, Tim20Ch3, Tim20Ch4],
            [PwmChannel, PwmChannel, PwmChannel, PwmChannel]
        );

        // Channels
        // TODO: stm32f3 doesn't suppport registers for all 4 channels
        pwm_pin_for_pwm_n_channel!(TIM20, Tim20Ch1, u16, cc1e, cc1ne, ccr1, ccr);

        //Pins
        pwm_channel1_pin!(TIM20, Tim20Ch1, output_to_pe2, gpioe::PE2<AF6>);

        pwm_channel1n_pin!(TIM20, Tim20Ch1, output_to_pe4, gpioe::PE4<AF6>);
    };
}

#[cfg(feature = "stm32f398")]
tim20!();