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feat: Add support for a full-speed ULPI mode

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This commit is contained in:
elagil 2024-08-24 20:23:10 +02:00
parent b88dc137e7
commit 557cff7085
2 changed files with 54 additions and 2 deletions
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49
embassy-stm32/src/usb/otg.rs
View File

@ -97,6 +97,55 @@ impl<'d, T: Instance> Driver<'d, T> {
}
}
/// Initializes USB OTG peripheral with external Full-speed PHY (usually, a High-speed PHY in Full-speed mode).
///
/// # Arguments
///
/// * `ep_out_buffer` - An internal buffer used to temporarily store received packets.
/// Must be large enough to fit all OUT endpoint max packet sizes.
/// Endpoint allocation will fail if it is too small.
pub fn new_fs_ulpi(
_peri: impl Peripheral<P = T> + 'd,
_irq: impl interrupt::typelevel::Binding<T::Interrupt, InterruptHandler<T>> + 'd,
ulpi_clk: impl Peripheral<P = impl UlpiClkPin<T>> + 'd,
ulpi_dir: impl Peripheral<P = impl UlpiDirPin<T>> + 'd,
ulpi_nxt: impl Peripheral<P = impl UlpiNxtPin<T>> + 'd,
ulpi_stp: impl Peripheral<P = impl UlpiStpPin<T>> + 'd,
ulpi_d0: impl Peripheral<P = impl UlpiD0Pin<T>> + 'd,
ulpi_d1: impl Peripheral<P = impl UlpiD1Pin<T>> + 'd,
ulpi_d2: impl Peripheral<P = impl UlpiD2Pin<T>> + 'd,
ulpi_d3: impl Peripheral<P = impl UlpiD3Pin<T>> + 'd,
ulpi_d4: impl Peripheral<P = impl UlpiD4Pin<T>> + 'd,
ulpi_d5: impl Peripheral<P = impl UlpiD5Pin<T>> + 'd,
ulpi_d6: impl Peripheral<P = impl UlpiD6Pin<T>> + 'd,
ulpi_d7: impl Peripheral<P = impl UlpiD7Pin<T>> + 'd,
ep_out_buffer: &'d mut [u8],
config: Config,
) -> Self {
config_ulpi_pins!(
ulpi_clk, ulpi_dir, ulpi_nxt, ulpi_stp, ulpi_d0, ulpi_d1, ulpi_d2, ulpi_d3, ulpi_d4, ulpi_d5, ulpi_d6,
ulpi_d7
);
let regs = T::regs();
let instance = OtgInstance {
regs: T::regs(),
state: T::state(),
fifo_depth_words: T::FIFO_DEPTH_WORDS,
extra_rx_fifo_words: RX_FIFO_EXTRA_SIZE_WORDS,
endpoint_count: T::ENDPOINT_COUNT,
phy_type: PhyType::ExternalFullSpeed,
quirk_setup_late_cnak: quirk_setup_late_cnak(regs),
calculate_trdt_fn: calculate_trdt::<T>,
};
Self {
inner: OtgDriver::new(ep_out_buffer, instance, config),
phantom: PhantomData,
}
}
/// Initializes USB OTG peripheral with external High-Speed PHY.
///
/// # Arguments

7
embassy-usb-synopsys-otg/src/lib.rs
View File

@ -179,6 +179,8 @@ pub enum PhyType {
///
/// Available on a few STM32 chips.
InternalHighSpeed,
/// External ULPI Full-Speed PHY (or High-Speed PHY in Full-Speed mode)
ExternalFullSpeed,
/// External ULPI High-Speed PHY
ExternalHighSpeed,
}
@ -188,14 +190,14 @@ impl PhyType {
pub fn internal(&self) -> bool {
match self {
PhyType::InternalFullSpeed | PhyType::InternalHighSpeed => true,
PhyType::ExternalHighSpeed => false,
PhyType::ExternalHighSpeed | PhyType::ExternalFullSpeed => false,
}
}
/// Get whether this PHY is any of the high-speed types.
pub fn high_speed(&self) -> bool {
match self {
PhyType::InternalFullSpeed => false,
PhyType::InternalFullSpeed | PhyType::ExternalFullSpeed => false,
PhyType::ExternalHighSpeed | PhyType::InternalHighSpeed => true,
}
}
@ -204,6 +206,7 @@ impl PhyType {
match self {
PhyType::InternalFullSpeed => vals::Dspd::FULL_SPEED_INTERNAL,
PhyType::InternalHighSpeed => vals::Dspd::HIGH_SPEED,
PhyType::ExternalFullSpeed => vals::Dspd::FULL_SPEED_EXTERNAL,
PhyType::ExternalHighSpeed => vals::Dspd::HIGH_SPEED,
}
}