234 lines
7.4 KiB
Rust
234 lines
7.4 KiB
Rust
use core::marker::PhantomData;
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use embassy::util::Unborrow;
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use embassy_hal_common::unborrow;
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use synopsys_usb_otg::{PhyType, UsbPeripheral};
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use crate::gpio::sealed::AFType;
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use crate::gpio::Speed;
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use crate::{peripherals, rcc::RccPeripheral};
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pub use embassy_hal_common::usb::*;
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pub use synopsys_usb_otg::UsbBus;
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macro_rules! config_ulpi_pins {
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($($pin:ident),*) => {
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unborrow!($($pin),*);
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// NOTE(unsafe) Exclusive access to the registers
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critical_section::with(|_| unsafe {
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$(
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$pin.set_as_af($pin.af_num(), AFType::OutputPushPull);
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$pin.set_speed(Speed::VeryHigh);
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)*
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})
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};
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}
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pub struct UsbOtg<'d, T: Instance> {
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phantom: PhantomData<&'d mut T>,
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phy_type: PhyType,
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}
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impl<'d, T: Instance> UsbOtg<'d, T> {
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/// Initializes USB OTG peripheral with internal Full-Speed PHY
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pub fn new_fs(
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_peri: impl Unborrow<Target = T> + 'd,
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dp: impl Unborrow<Target = impl DpPin<T>> + 'd,
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dm: impl Unborrow<Target = impl DmPin<T>> + 'd,
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) -> Self {
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unborrow!(dp, dm);
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unsafe {
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dp.set_as_af(dp.af_num(), AFType::OutputPushPull);
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dm.set_as_af(dm.af_num(), AFType::OutputPushPull);
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}
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Self {
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phantom: PhantomData,
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phy_type: PhyType::InternalFullSpeed,
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}
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}
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/// Initializes USB OTG peripheral with external High-Speed PHY
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pub fn new_hs_ulpi(
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_peri: impl Unborrow<Target = T> + 'd,
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ulpi_clk: impl Unborrow<Target = impl UlpiClkPin<T>> + 'd,
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ulpi_dir: impl Unborrow<Target = impl UlpiDirPin<T>> + 'd,
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ulpi_nxt: impl Unborrow<Target = impl UlpiNxtPin<T>> + 'd,
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ulpi_stp: impl Unborrow<Target = impl UlpiStpPin<T>> + 'd,
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ulpi_d0: impl Unborrow<Target = impl UlpiD0Pin<T>> + 'd,
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ulpi_d1: impl Unborrow<Target = impl UlpiD1Pin<T>> + 'd,
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ulpi_d2: impl Unborrow<Target = impl UlpiD2Pin<T>> + 'd,
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ulpi_d3: impl Unborrow<Target = impl UlpiD3Pin<T>> + 'd,
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ulpi_d4: impl Unborrow<Target = impl UlpiD4Pin<T>> + 'd,
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ulpi_d5: impl Unborrow<Target = impl UlpiD5Pin<T>> + 'd,
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ulpi_d6: impl Unborrow<Target = impl UlpiD6Pin<T>> + 'd,
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ulpi_d7: impl Unborrow<Target = impl UlpiD7Pin<T>> + 'd,
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) -> Self {
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config_ulpi_pins!(
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ulpi_clk, ulpi_dir, ulpi_nxt, ulpi_stp, ulpi_d0, ulpi_d1, ulpi_d2, ulpi_d3, ulpi_d4,
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ulpi_d5, ulpi_d6, ulpi_d7
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);
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Self {
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phantom: PhantomData,
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phy_type: PhyType::ExternalHighSpeed,
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}
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}
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}
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impl<'d, T: Instance> Drop for UsbOtg<'d, T> {
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fn drop(&mut self) {
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T::reset();
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T::disable();
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}
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}
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unsafe impl<'d, T: Instance> Send for UsbOtg<'d, T> {}
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unsafe impl<'d, T: Instance> Sync for UsbOtg<'d, T> {}
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unsafe impl<'d, T: Instance> UsbPeripheral for UsbOtg<'d, T> {
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const REGISTERS: *const () = T::REGISTERS;
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const HIGH_SPEED: bool = T::HIGH_SPEED;
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const FIFO_DEPTH_WORDS: usize = T::FIFO_DEPTH_WORDS;
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const ENDPOINT_COUNT: usize = T::ENDPOINT_COUNT;
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fn enable() {
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<T as crate::rcc::sealed::RccPeripheral>::enable();
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<T as crate::rcc::sealed::RccPeripheral>::reset();
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}
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fn phy_type(&self) -> PhyType {
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self.phy_type
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}
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fn ahb_frequency_hz(&self) -> u32 {
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<T as crate::rcc::sealed::RccPeripheral>::frequency().0
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}
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}
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pub(crate) mod sealed {
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pub trait Instance {
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const REGISTERS: *const ();
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const HIGH_SPEED: bool;
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const FIFO_DEPTH_WORDS: usize;
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const ENDPOINT_COUNT: usize;
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}
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}
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pub trait Instance: sealed::Instance + RccPeripheral {}
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// Internal PHY pins
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pin_trait!(DpPin, Instance);
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pin_trait!(DmPin, Instance);
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// External PHY pins
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pin_trait!(UlpiClkPin, Instance);
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pin_trait!(UlpiDirPin, Instance);
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pin_trait!(UlpiNxtPin, Instance);
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pin_trait!(UlpiStpPin, Instance);
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pin_trait!(UlpiD0Pin, Instance);
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pin_trait!(UlpiD1Pin, Instance);
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pin_trait!(UlpiD2Pin, Instance);
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pin_trait!(UlpiD3Pin, Instance);
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pin_trait!(UlpiD4Pin, Instance);
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pin_trait!(UlpiD5Pin, Instance);
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pin_trait!(UlpiD6Pin, Instance);
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pin_trait!(UlpiD7Pin, Instance);
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foreach_peripheral!(
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(otgfs, $inst:ident) => {
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impl sealed::Instance for peripherals::$inst {
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const REGISTERS: *const () = crate::pac::$inst.0 as *const ();
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const HIGH_SPEED: bool = false;
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cfg_if::cfg_if! {
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if #[cfg(stm32f1)] {
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const FIFO_DEPTH_WORDS: usize = 128;
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const ENDPOINT_COUNT: usize = 8;
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} else if #[cfg(any(
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stm32f2,
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stm32f401,
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stm32f405,
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stm32f407,
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stm32f411,
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stm32f415,
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stm32f417,
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stm32f427,
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stm32f429,
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stm32f437,
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stm32f439,
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))] {
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const FIFO_DEPTH_WORDS: usize = 320;
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const ENDPOINT_COUNT: usize = 4;
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} else if #[cfg(any(
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stm32f412,
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stm32f413,
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stm32f423,
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stm32f446,
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stm32f469,
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stm32f479,
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stm32f7,
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stm32l4,
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stm32u5,
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))] {
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const FIFO_DEPTH_WORDS: usize = 320;
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const ENDPOINT_COUNT: usize = 6;
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} else if #[cfg(stm32g0x1)] {
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const FIFO_DEPTH_WORDS: usize = 512;
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const ENDPOINT_COUNT: usize = 8;
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} else {
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compile_error!("USB_OTG_FS peripheral is not supported by this chip. Disable \"usb-otg-fs\" feature or select a different chip.");
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}
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}
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}
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impl Instance for peripherals::$inst {}
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};
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(otghs, $inst:ident) => {
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impl sealed::Instance for peripherals::$inst {
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const REGISTERS: *const () = crate::pac::$inst.0 as *const ();
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const HIGH_SPEED: bool = true;
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cfg_if::cfg_if! {
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if #[cfg(any(
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stm32f2,
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stm32f405,
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stm32f407,
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stm32f415,
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stm32f417,
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stm32f427,
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stm32f429,
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stm32f437,
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stm32f439,
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))] {
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const FIFO_DEPTH_WORDS: usize = 1024;
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const ENDPOINT_COUNT: usize = 6;
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} else if #[cfg(any(
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stm32f446,
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stm32f469,
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stm32f479,
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stm32f7,
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stm32h7,
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))] {
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const FIFO_DEPTH_WORDS: usize = 1024;
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const ENDPOINT_COUNT: usize = 9;
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} else {
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compile_error!("USB_OTG_HS peripheral is not supported by this chip. Disable \"usb-otg-hs\" feature or select a different chip.");
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}
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}
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}
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impl Instance for peripherals::$inst {}
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};
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);
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foreach_interrupt!(
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($inst:ident, otgfs, $block:ident, GLOBAL, $irq:ident) => {
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unsafe impl USBInterrupt for crate::interrupt::$irq {}
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};
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($inst:ident, otghs, $block:ident, GLOBAL, $irq:ident) => {
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unsafe impl USBInterrupt for crate::interrupt::$irq {}
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};
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);
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