Add initial octopsi module
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2 changed files with 180 additions and 0 deletions
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@ -57,6 +57,8 @@ pub mod ipcc;
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pub mod low_power;
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#[cfg(opamp)]
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pub mod opamp;
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#[cfg(octospi)]
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pub mod ospi;
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#[cfg(quadspi)]
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pub mod qspi;
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#[cfg(rng)]
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178
embassy-stm32/src/ospi/mod.rs
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178
embassy-stm32/src/ospi/mod.rs
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@ -0,0 +1,178 @@
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//! OCTOSPI Serial Peripheral Interface
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//!
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#![macro_use]
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use core::ptr;
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use embassy_embedded_hal::SetConfig;
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use embassy_futures::join::join;
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use embassy_hal_internal::{into_ref, PeripheralRef};
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pub use embedded_hal_02::spi::{Mode, Phase, Polarity, MODE_0, MODE_1, MODE_2, MODE_3};
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use crate::dma::{slice_ptr_parts, word, Transfer};
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use crate::gpio::sealed::{AFType, Pin as _};
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use crate::gpio::{AnyPin, Pull};
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use crate::pac::octospi::{regs, vals, Octospi as Regs};
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use crate::rcc::RccPeripheral;
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use crate::time::Hertz;
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use crate::{peripherals, Peripheral};
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pub struct Config;
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pub struct Ospi<'d, T: Instance, Dma> {
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_peri: PeripheralRef<'d, T>,
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sck: Option<PeripheralRef<'d, AnyPin>>,
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d0: Option<PeripheralRef<'d, AnyPin>>,
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d1: Option<PeripheralRef<'d, AnyPin>>,
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d2: Option<PeripheralRef<'d, AnyPin>>,
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d3: Option<PeripheralRef<'d, AnyPin>>,
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d4: Option<PeripheralRef<'d, AnyPin>>,
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d5: Option<PeripheralRef<'d, AnyPin>>,
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d6: Option<PeripheralRef<'d, AnyPin>>,
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d7: Option<PeripheralRef<'d, AnyPin>>,
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nss: Option<PeripheralRef<'d, AnyPin>>,
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dqs: Option<PeripheralRef<'d, AnyPin>>,
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dma: PeripheralRef<'d, Dma>,
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config: Config,
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}
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impl<'d, T: Instance, Dma> Ospi<'d, T, Dma> {
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/// Create new OSPI driver for a dualspi external chip
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pub fn new_dualspi(
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peri: impl Peripheral<P = T> + 'd,
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sck: impl Peripheral<P = impl SckPin<T>> + 'd,
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d0: impl Peripheral<P = impl D0Pin<T>> + 'd,
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d1: impl Peripheral<P = impl D1Pin<T>> + 'd,
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nss: impl Peripheral<P = impl NSSPin<T>> + 'd,
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dma: impl Peripheral<P = Dma> + 'd,
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config: Config,
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) -> Self {
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into_ref!(peri, sck, d0, d1, nss);
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sck.set_as_af_pull(sck.af_num(), AFType::OutputPushPull, Pull::None);
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sck.set_speed(crate::gpio::Speed::VeryHigh);
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nss.set_as_af_pull(nss.af_num(), AFType::OutputPushPull, Pull::Up);
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nss.set_speed(crate::gpio::Speed::VeryHigh);
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d0.set_as_af_pull(d0.af_num(), AFType::OutputPushPull, Pull::None);
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d0.set_speed(crate::gpio::Speed::VeryHigh);
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d1.set_as_af_pull(d1.af_num(), AFType::OutputPushPull, Pull::None);
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d1.set_speed(crate::gpio::Speed::VeryHigh);
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Self::new_inner(
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peri,
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Some(d0.map_into()),
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Some(d1.map_into()),
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None,
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None,
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None,
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None,
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None,
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None,
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Some(sck.map_into()),
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Some(nss.map_into()),
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None,
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dma,
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config,
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)
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}
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fn new_inner(
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peri: impl Peripheral<P = T> + 'd,
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d0: Option<PeripheralRef<'d, AnyPin>>,
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d1: Option<PeripheralRef<'d, AnyPin>>,
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d2: Option<PeripheralRef<'d, AnyPin>>,
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d3: Option<PeripheralRef<'d, AnyPin>>,
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d4: Option<PeripheralRef<'d, AnyPin>>,
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d5: Option<PeripheralRef<'d, AnyPin>>,
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d6: Option<PeripheralRef<'d, AnyPin>>,
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d7: Option<PeripheralRef<'d, AnyPin>>,
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sck: Option<PeripheralRef<'d, AnyPin>>,
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nss: Option<PeripheralRef<'d, AnyPin>>,
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dqs: Option<PeripheralRef<'d, AnyPin>>,
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dma: impl Peripheral<P = Dma> + 'd,
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config: Config,
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) -> Self {
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into_ref!(peri, dma);
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T::enable_and_reset();
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T::REGS.sr().read().busy();
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T::REGS.cr().modify(|w| {
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w.set_en(true);
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});
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#[cfg(octospi_v1)]
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{
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T::REGS.ccr().modify(|w| {
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w.set_imode(vals::PhaseMode::TWOLINES);
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w.set_admode(vals::PhaseMode::TWOLINES);
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w.set_abmode(vals::PhaseMode::TWOLINES);
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w.set_dmode(vals::PhaseMode::TWOLINES);
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});
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T::REGS.wccr().modify(|w| {
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w.set_imode(vals::PhaseMode::TWOLINES);
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w.set_admode(vals::PhaseMode::TWOLINES);
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w.set_abmode(vals::PhaseMode::TWOLINES);
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w.set_dmode(vals::PhaseMode::TWOLINES);
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});
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}
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//
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// while T::REGS::sr().read().busy() {}
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Self {
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_peri: peri,
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sck,
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d0,
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d1,
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d2,
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d3,
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d4,
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d5,
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d6,
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d7,
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nss,
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dqs,
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dma,
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config,
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}
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}
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}
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pub(crate) mod sealed {
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use super::*;
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pub trait Instance {
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const REGS: Regs;
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}
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}
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/// OSPI instance trait.
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pub trait Instance: Peripheral<P = Self> + sealed::Instance + RccPeripheral {}
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pin_trait!(SckPin, Instance);
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pin_trait!(NckPin, Instance);
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pin_trait!(D0Pin, Instance);
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pin_trait!(D1Pin, Instance);
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pin_trait!(D2Pin, Instance);
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pin_trait!(D3Pin, Instance);
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pin_trait!(D4Pin, Instance);
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pin_trait!(D5Pin, Instance);
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pin_trait!(D6Pin, Instance);
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pin_trait!(D7Pin, Instance);
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pin_trait!(DQSPin, Instance);
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pin_trait!(NSSPin, Instance);
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dma_trait!(OctoDma, Instance);
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foreach_peripheral!(
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(octospi, $inst:ident) => {
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impl sealed::Instance for peripherals::$inst {
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const REGS: Regs = crate::pac::$inst;
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}
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impl Instance for peripherals::$inst {}
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};
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);
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