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Merge v1, v2 DAC and update register definitions

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This commit is contained in:
chemicstry
2022-08-04 03:02:57 +03:00
parent 1924f2d67d
commit 5f01e56728
6 changed files with 119 additions and 105 deletions
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36
embassy-stm32/src/dac/mod.rs
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@ -1,36 +0,0 @@
#![macro_use]
#[cfg_attr(dac_v1, path = "v1.rs")]
#[cfg_attr(dac_v2, path = "v2.rs")]
mod _version;
pub use _version::*;
use crate::peripherals;
pub(crate) mod sealed {
pub trait Instance {
fn regs() -> &'static crate::pac::dac::Dac;
}
}
pub trait Instance: sealed::Instance + 'static {}
pub trait DacPin<T: Instance, const C: u8>: crate::gpio::Pin + 'static {}
foreach_peripheral!(
(dac, $inst:ident) => {
impl crate::dac::sealed::Instance for peripherals::$inst {
fn regs() -> &'static crate::pac::dac::Dac {
&crate::pac::$inst
}
}
impl crate::dac::Instance for peripherals::$inst {}
};
);
macro_rules! impl_dac_pin {
($inst:ident, $pin:ident, $ch:expr) => {
impl crate::dac::DacPin<peripherals::$inst, $ch> for crate::peripherals::$pin {}
};
}

1
embassy-stm32/src/dac/v1.rs
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@ -1 +0,0 @@

258
embassy-stm32/src/dac/v2.rs
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@ -1,258 +0,0 @@
use embassy_hal_common::{into_ref, PeripheralRef};
use crate::dac::{DacPin, Instance};
use crate::pac::dac;
use crate::Peripheral;
#[derive(Debug, Copy, Clone, Eq, PartialEq)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub enum Error {
UnconfiguredChannel,
InvalidValue,
}
#[derive(Debug, Copy, Clone, Eq, PartialEq)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub enum Channel {
Ch1,
Ch2,
}
#[derive(Debug, Copy, Clone, Eq, PartialEq)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub enum Ch1Trigger {
Tim6,
Tim3,
Tim7,
Tim15,
Tim2,
Exti9,
Software,
}
impl Ch1Trigger {
fn tsel(&self) -> dac::vals::Tsel1 {
match self {
Ch1Trigger::Tim6 => dac::vals::Tsel1::TIM6_TRGO,
Ch1Trigger::Tim3 => dac::vals::Tsel1::TIM3_TRGO,
Ch1Trigger::Tim7 => dac::vals::Tsel1::TIM7_TRGO,
Ch1Trigger::Tim15 => dac::vals::Tsel1::TIM15_TRGO,
Ch1Trigger::Tim2 => dac::vals::Tsel1::TIM2_TRGO,
Ch1Trigger::Exti9 => dac::vals::Tsel1::EXTI9,
Ch1Trigger::Software => dac::vals::Tsel1::SOFTWARE,
}
}
}
#[derive(Debug, Copy, Clone, Eq, PartialEq)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub enum Ch2Trigger {
Tim6,
Tim8,
Tim7,
Tim5,
Tim2,
Tim4,
Exti9,
Software,
}
impl Ch2Trigger {
fn tsel(&self) -> dac::vals::Tsel2 {
match self {
Ch2Trigger::Tim6 => dac::vals::Tsel2::TIM6_TRGO,
Ch2Trigger::Tim8 => dac::vals::Tsel2::TIM8_TRGO,
Ch2Trigger::Tim7 => dac::vals::Tsel2::TIM7_TRGO,
Ch2Trigger::Tim5 => dac::vals::Tsel2::TIM5_TRGO,
Ch2Trigger::Tim2 => dac::vals::Tsel2::TIM2_TRGO,
Ch2Trigger::Tim4 => dac::vals::Tsel2::TIM4_TRGO,
Ch2Trigger::Exti9 => dac::vals::Tsel2::EXTI9,
Ch2Trigger::Software => dac::vals::Tsel2::SOFTWARE,
}
}
}
#[derive(Debug, Copy, Clone, Eq, PartialEq)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub enum Alignment {
Left,
Right,
}
#[derive(Debug, Copy, Clone, Eq, PartialEq)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub enum Value {
Bit8(u8),
Bit12(u16, Alignment),
}
pub struct Dac<'d, T: Instance> {
channels: u8,
_peri: PeripheralRef<'d, T>,
}
macro_rules! enable {
($enable_reg:ident, $enable_field:ident, $reset_reg:ident, $reset_field:ident) => {
crate::pac::RCC.$enable_reg().modify(|w| w.$enable_field(true));
crate::pac::RCC.$reset_reg().modify(|w| w.$reset_field(true));
crate::pac::RCC.$reset_reg().modify(|w| w.$reset_field(false));
};
}
impl<'d, T: Instance> Dac<'d, T> {
pub fn new_1ch(peri: impl Peripheral<P = T> + 'd, _ch1: impl Peripheral<P = impl DacPin<T, 1>> + 'd) -> Self {
into_ref!(peri);
Self::new_inner(peri, 1)
}
pub fn new_2ch(
peri: impl Peripheral<P = T> + 'd,
_ch1: impl Peripheral<P = impl DacPin<T, 1>> + 'd,
_ch2: impl Peripheral<P = impl DacPin<T, 2>> + 'd,
) -> Self {
into_ref!(peri);
Self::new_inner(peri, 2)
}
fn new_inner(peri: PeripheralRef<'d, T>, channels: u8) -> Self {
unsafe {
// Sadly we cannot use `RccPeripheral::enable` since devices are quite inconsistent DAC clock
// configuration.
critical_section::with(|_| {
#[cfg(rcc_h7)]
enable!(apb1lenr, set_dac12en, apb1lrstr, set_dac12rst);
#[cfg(rcc_h7ab)]
enable!(apb1lenr, set_dac1en, apb1lrstr, set_dac1rst);
#[cfg(stm32g0)]
enable!(apbenr1, set_dac1en, apbrstr1, set_dac1rst);
#[cfg(any(stm32l4, stm32l5))]
enable!(apb1enr1, set_dac1en, apb1rstr1, set_dac1rst);
});
if channels >= 1 {
T::regs().cr().modify(|reg| {
reg.set_en1(true);
});
}
if channels >= 2 {
T::regs().cr().modify(|reg| {
reg.set_en2(true);
});
}
}
Self { channels, _peri: peri }
}
/// Check the channel is configured
fn check_channel_exists(&self, ch: Channel) -> Result<(), Error> {
if ch == Channel::Ch2 && self.channels < 2 {
Err(Error::UnconfiguredChannel)
} else {
Ok(())
}
}
fn set_channel_enable(&mut self, ch: Channel, on: bool) -> Result<(), Error> {
self.check_channel_exists(ch)?;
match ch {
Channel::Ch1 => unsafe {
T::regs().cr().modify(|reg| {
reg.set_en1(on);
})
},
Channel::Ch2 => unsafe {
T::regs().cr().modify(|reg| {
reg.set_en2(on);
});
},
}
Ok(())
}
pub fn enable_channel(&mut self, ch: Channel) -> Result<(), Error> {
self.set_channel_enable(ch, true)
}
pub fn disable_channel(&mut self, ch: Channel) -> Result<(), Error> {
self.set_channel_enable(ch, false)
}
pub fn select_trigger_ch1(&mut self, trigger: Ch1Trigger) -> Result<(), Error> {
self.check_channel_exists(Channel::Ch1)?;
unwrap!(self.disable_channel(Channel::Ch1));
unsafe {
T::regs().cr().modify(|reg| {
reg.set_tsel1(trigger.tsel());
})
}
Ok(())
}
pub fn select_trigger_ch2(&mut self, trigger: Ch2Trigger) -> Result<(), Error> {
self.check_channel_exists(Channel::Ch2)?;
unwrap!(self.disable_channel(Channel::Ch2));
unsafe {
T::regs().cr().modify(|reg| {
reg.set_tsel2(trigger.tsel());
})
}
Ok(())
}
pub fn trigger(&mut self, ch: Channel) -> Result<(), Error> {
self.check_channel_exists(ch)?;
match ch {
Channel::Ch1 => unsafe {
T::regs().swtrigr().write(|reg| {
reg.set_swtrig1(true);
});
},
Channel::Ch2 => unsafe {
T::regs().swtrigr().write(|reg| {
reg.set_swtrig2(true);
})
},
}
Ok(())
}
pub fn trigger_all(&mut self) {
unsafe {
T::regs().swtrigr().write(|reg| {
reg.set_swtrig1(true);
reg.set_swtrig2(true);
})
}
}
pub fn set(&mut self, ch: Channel, value: Value) -> Result<(), Error> {
self.check_channel_exists(ch)?;
match ch {
Channel::Ch1 => match value {
Value::Bit8(v) => unsafe {
T::regs().dhr8r1().write(|reg| reg.set_dacc1dhr(v));
},
Value::Bit12(v, Alignment::Left) => unsafe {
T::regs().dhr12l1().write(|reg| reg.set_dacc1dhr(v));
},
Value::Bit12(v, Alignment::Right) => unsafe {
T::regs().dhr12r1().write(|reg| reg.set_dacc1dhr(v));
},
},
Channel::Ch2 => match value {
Value::Bit8(v) => unsafe {
T::regs().dhr8r2().write(|reg| reg.set_dacc2dhr(v));
},
Value::Bit12(v, Alignment::Left) => unsafe {
T::regs().dhr12l2().write(|reg| reg.set_dacc2dhr(v));
},
Value::Bit12(v, Alignment::Right) => unsafe {
T::regs().dhr12r2().write(|reg| reg.set_dacc2dhr(v));
},
},
}
Ok(())
}
}