From 5d03d53fad3fb08ce4e2be35a5cb60d5de86bc82 Mon Sep 17 00:00:00 2001
From: Christopher Durand <christopher.durand@noyes-tech.com>
Date: Wed, 26 Jul 2023 16:40:15 +0200
Subject: [PATCH] [stm32] Fix STM32G0 ADC

The internal voltage regulator is not enabled and calibration never
suceeds.
---
 src/modm/platform/adc/stm32f0/adc_impl.hpp.in | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/modm/platform/adc/stm32f0/adc_impl.hpp.in b/src/modm/platform/adc/stm32f0/adc_impl.hpp.in
index 91b6e19a88..09c503cf5a 100644
--- a/src/modm/platform/adc/stm32f0/adc_impl.hpp.in
+++ b/src/modm/platform/adc/stm32f0/adc_impl.hpp.in
@@ -28,6 +28,11 @@ modm::platform::Adc{{ id }}::initialize()
 {
 	Rcc::enable<Peripheral::Adc{{ id }}>();
 
+%% if target.family in ["g0"]
+	ADC1->CR |= ADC_CR_ADVREGEN;
+	modm::delay_us(20);
+%% endif
+
 	if constexpr (mode == ClockMode::Synchronous) {
 		constexpr auto result = Prescaler::from_power(
 				SystemClock::Apb, frequency, {{2 if target.family in ["f0"] else 1}}, 4);