From 79fbf214ccc7be89d8d656cf0c5b5ffe5425bece Mon Sep 17 00:00:00 2001
From: clubby789 <jamie@hill-daniel.co.uk>
Date: Sun, 20 Jul 2025 15:38:42 +0100
Subject: [PATCH] Enable oversampling for ADC v3

---
 embassy-stm32/src/adc/v3.rs | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/embassy-stm32/src/adc/v3.rs b/embassy-stm32/src/adc/v3.rs
index 313244e19..fd74d5318 100644
--- a/embassy-stm32/src/adc/v3.rs
+++ b/embassy-stm32/src/adc/v3.rs
@@ -1,5 +1,7 @@
 use cfg_if::cfg_if;
 use pac::adc::vals::Dmacfg;
+#[cfg(adc_v3)]
+use pac::adc::vals::{OversamplingRatio, OversamplingShift, Rovsm, Trovs};
 
 use super::{
     blocking_delay_us, Adc, AdcChannel, AnyAdcChannel, Instance, Resolution, RxDma, SampleTime, SealedAdcChannel,
@@ -470,6 +472,23 @@ impl<'d, T: Instance> Adc<'d, T> {
         T::regs().cfgr2().modify(|reg| reg.set_ovse(enable));
     }
 
+    #[cfg(adc_v3)]
+    pub fn enable_regular_oversampling_mode(&mut self, mode: Rovsm, trig_mode: Trovs, enable: bool) {
+        T::regs().cfgr2().modify(|reg| reg.set_trovs(trig_mode));
+        T::regs().cfgr2().modify(|reg| reg.set_rovsm(mode));
+        T::regs().cfgr2().modify(|reg| reg.set_rovse(enable));
+    }
+
+    #[cfg(adc_v3)]
+    pub fn set_oversampling_ratio(&mut self, ratio: OversamplingRatio) {
+        T::regs().cfgr2().modify(|reg| reg.set_ovsr(ratio));
+    }
+
+    #[cfg(adc_v3)]
+    pub fn set_oversampling_shift(&mut self, shift: OversamplingShift) {
+        T::regs().cfgr2().modify(|reg| reg.set_ovss(shift));
+    }
+
     fn set_channel_sample_time(_ch: u8, sample_time: SampleTime) {
         cfg_if! {
             if #[cfg(any(adc_g0, adc_u0))] {