From 6414c64f89d287258a8703d3e9cb73b10d6d11ad Mon Sep 17 00:00:00 2001
From: Dave VanKampen <david.vankampen@bissell.com>
Date: Fri, 24 Sep 2021 10:20:09 -0400
Subject: [PATCH] cpu/stm32: added ADC for g0

---
 cpu/stm32/periph/Makefile                  |  2 ++
 cpu/stm32/periph/{adc_f0.c => adc_f0_g0.c} | 14 ++++++++++++--
 2 files changed, 14 insertions(+), 2 deletions(-)
 rename cpu/stm32/periph/{adc_f0.c => adc_f0_g0.c} (84%)

diff --git a/cpu/stm32/periph/Makefile b/cpu/stm32/periph/Makefile
index 83c291a1b2..8db7e41985 100644
--- a/cpu/stm32/periph/Makefile
+++ b/cpu/stm32/periph/Makefile
@@ -15,6 +15,8 @@ endif
 ifneq (,$(filter periph_adc,$(USEMODULE)))
   ifneq (,$(filter $(CPU_FAM),f4 f7))
     SRC += adc_f4_f7.c
+  else ifneq (,$(filter $(CPU_FAM),f0 g0))
+    SRC += adc_f0_g0.c
   else
     SRC += adc_$(CPU_FAM).c
   endif
diff --git a/cpu/stm32/periph/adc_f0.c b/cpu/stm32/periph/adc_f0_g0.c
similarity index 84%
rename from cpu/stm32/periph/adc_f0.c
rename to cpu/stm32/periph/adc_f0_g0.c
index 16e5f8d7bd..50f68fffd9 100644
--- a/cpu/stm32/periph/adc_f0.c
+++ b/cpu/stm32/periph/adc_f0_g0.c
@@ -24,21 +24,31 @@
 #include "periph/adc.h"
 
 /**
- * @brief   Allocate locks for all three available ADC device
+ * @brief   Allocate lock for the ADC device
  *
- * All STM32F0 CPUs we support so far only come with a single ADC device.
+ * All STM32F0 & STM32G0 CPUs we support so far only come with a single ADC device.
  */
 static mutex_t lock = MUTEX_INIT;
 
 static inline void prep(void)
 {
     mutex_lock(&lock);
+#ifdef RCC_APB2ENR_ADCEN
     periph_clk_en(APB2, RCC_APB2ENR_ADCEN);
+#endif
+#ifdef RCC_APBENR2_ADCEN
+    periph_clk_en(APB12, RCC_APBENR2_ADCEN);
+#endif
 }
 
 static inline void done(void)
 {
+#ifdef RCC_APB2ENR_ADCEN
     periph_clk_dis(APB2, RCC_APB2ENR_ADCEN);
+#endif
+#ifdef RCC_APBENR2_ADCEN
+    periph_clk_dis(APB12, RCC_APBENR2_ADCEN);
+#endif
     mutex_unlock(&lock);
 }