2 files changed, 10 insertions, 19 deletions

diff --git a/embassy-stm32/src/adc/adc4.rs b/embassy-stm32/src/adc/adc4.rs
index 43509873f..491569c34 100644
--- a/embassy-stm32/src/adc/adc4.rs
+++ b/embassy-stm32/src/adc/adc4.rs
@@ -24,23 +24,23 @@ pub const VREF_DEFAULT_MV: u32 = 3300;
 /// VREF voltage used for factory calibration of VREFINTCAL register.
 pub const VREF_CALIB_MV: u32 = 3300;
 
-impl<'d, T: Instance> super::SealedSpecialConverter<super::VrefInt> for Adc4<'d, T> {
+impl super::SealedSpecialConverter<super::VrefInt> for crate::peripherals::ADC4 {
     const CHANNEL: u8 = 0;
 }
 
-impl<'d, T: Instance> super::SealedSpecialConverter<super::Temperature> for Adc4<'d, T> {
+impl super::SealedSpecialConverter<super::Temperature> for crate::peripherals::ADC4 {
     const CHANNEL: u8 = 13;
 }
 
-impl<'d, T: Instance> super::SealedSpecialConverter<super::Vcore> for Adc4<'d, T> {
+impl super::SealedSpecialConverter<super::Vcore> for crate::peripherals::ADC4 {
     const CHANNEL: u8 = 12;
 }
 
-impl<'d, T: Instance> super::SealedSpecialConverter<super::Vbat> for Adc4<'d, T> {
+impl super::SealedSpecialConverter<super::Vbat> for crate::peripherals::ADC4 {
     const CHANNEL: u8 = 14;
 }
 
-impl<'d, T: Instance> super::SealedSpecialConverter<super::Dac> for Adc4<'d, T> {
+impl super::SealedSpecialConverter<super::Dac> for crate::peripherals::ADC4 {
     const CHANNEL: u8 = 21;
 }
 
@@ -197,17 +197,6 @@ impl AdcRegs for crate::pac::adc::Adc4 {
     }
 }
 
-pub struct Adc4<'d, T: Instance> {
-    #[allow(unused)]
-    adc: crate::Peri<'d, T>,
-}
-
-#[derive(Copy, Clone, Debug)]
-pub enum Adc4Error {
-    InvalidSequence,
-    DMAError,
-}
-
 impl<'d, T: Instance<Regs = crate::pac::adc::Adc4>> super::Adc<'d, T> {
     /// Create a new ADC driver.
     pub fn new_adc4(adc: Peri<'d, T>) -> Self {
diff --git a/embassy-stm32/src/adc/v4.rs b/embassy-stm32/src/adc/v4.rs
index 09fc2ab22..962816194 100644
--- a/embassy-stm32/src/adc/v4.rs
+++ b/embassy-stm32/src/adc/v4.rs
@@ -5,6 +5,8 @@ use pac::adc::vals::{Adstp, Difsel, Dmngt, Exten, Pcsel};
 use pac::adccommon::vals::Presc;
 
 use super::{Adc, Averaging, Instance, Resolution, SampleTime, Temperature, Vbat, VrefInt, blocking_delay_us};
+#[cfg(stm32u5)]
+use crate::adc::DefaultInstance;
 use crate::adc::{AdcRegs, ConversionMode};
 use crate::time::Hertz;
 use crate::{Peri, pac, rcc};
@@ -47,15 +49,15 @@ impl<T: Instance> super::SealedSpecialConverter<super::Vbat> for T {
 }
 
 #[cfg(stm32u5)]
-impl<T: Instance> super::SealedSpecialConverter<super::VrefInt> for T {
+impl<T: DefaultInstance> super::SealedSpecialConverter<super::VrefInt> for T {
     const CHANNEL: u8 = 0;
 }
 #[cfg(stm32u5)]
-impl<T: Instance> super::SealedSpecialConverter<super::Temperature> for T {
+impl<T: DefaultInstance> super::SealedSpecialConverter<super::Temperature> for T {
     const CHANNEL: u8 = 19;
 }
 #[cfg(stm32u5)]
-impl<T: Instance> super::SealedSpecialConverter<super::Vbat> for T {
+impl<T: DefaultInstance> super::SealedSpecialConverter<super::Vbat> for T {
     const CHANNEL: u8 = 18;
 }