diff --git a/miosix/arch/cortexM3_efm32gg/common/drivers/adc.cpp b/miosix/arch/cortexM3_efm32gg/common/drivers/adc.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..ad3cb9331da38ff6fc0e6cd883459ee7b9b4a181
--- /dev/null
+++ b/miosix/arch/cortexM3_efm32gg/common/drivers/adc.cpp
@@ -0,0 +1,77 @@
+/***************************************************************************
+ * Copyright (C) 2023 by Terraneo Federico *
+ * *
+ * This program is free software; you can redistribute it and/or modify *
+ * it under the terms of the GNU General Public License as published by *
+ * the Free Software Foundation; either version 2 of the License, or *
+ * (at your option) any later version. *
+ * *
+ * This program is distributed in the hope that it will be useful, *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
+ * GNU General Public License for more details. *
+ * *
+ * As a special exception, if other files instantiate templates or use *
+ * macros or inline functions from this file, or you compile this file *
+ * and link it with other works to produce a work based on this file, *
+ * this file does not by itself cause the resulting work to be covered *
+ * by the GNU General Public License. However the source code for this *
+ * file must still be made available in accordance with the GNU General *
+ * Public License. This exception does not invalidate any other reasons *
+ * why a work based on this file might be covered by the GNU General *
+ * Public License. *
+ * *
+ * You should have received a copy of the GNU General Public License *
+ * along with this program; if not, see <http://www.gnu.org/licenses/> *
+ ***************************************************************************/
+
+#include "adc.h"
+#include "miosix.h"
+
+Adc& Adc::instance()
+{
+ static Adc singleton;
+ return singleton;
+}
+
+void Adc::powerMode(AdcPowerMode mode)
+{
+ ADC0->CTRL &= ~ 0b11; //Clear WARMUPMODE field
+ //NOTE: from an implementation perspective Off is the same as OnDemand
+ //but from a logical perspective Off is used to turn the ADC off after it
+ //has been turned on, while OnDemand is used to pay the startup cost at
+ //every conversion
+ if(mode==On)
+ {
+ ADC0->CTRL |= ADC_CTRL_WARMUPMODE_KEEPADCWARM;
+ while((ADC0->STATUS & ADC_STATUS_WARM)==0) ;
+ }
+}
+
+unsigned short Adc::readChannel(int channel)
+{
+ auto temp = ADC0->SINGLECTRL;
+ temp &= ~(0xf<<8); //Clear INPUTSEL field
+ temp |= (channel & 0xf)<<8;
+ ADC0->SINGLECTRL = temp;
+ ADC0->CMD=ADC_CMD_SINGLESTART;
+ while((ADC0->STATUS & ADC_STATUS_SINGLEDV)==0) ;
+ return ADC0->SINGLEDATA;
+}
+
+Adc::Adc()
+{
+ {
+ miosix::FastInterruptDisableLock dLock;
+ CMU->HFPERCLKEN0 |= CMU_HFPERCLKEN0_ADC0;
+ }
+ ADC0->CTRL = 0b11111<<16 //TIMEBASE ??
+ | (4-1)<<8 //PRESC 48/4=12MHz < 13MHz OK
+ | ADC_CTRL_LPFMODE_RCFILT
+ | ADC_CTRL_WARMUPMODE_NORMAL;
+ //TODO: expose more options
+ ADC0->SINGLECTRL = ADC_SINGLECTRL_AT_256CYCLES
+ | ADC_SINGLECTRL_REF_VDD
+ | ADC_SINGLECTRL_RES_12BIT
+ | ADC_SINGLECTRL_ADJ_RIGHT;
+}
diff --git a/miosix/arch/cortexM3_efm32gg/common/drivers/adc.h b/miosix/arch/cortexM3_efm32gg/common/drivers/adc.h
new file mode 100644
index 0000000000000000000000000000000000000000..07c5eeb7b6b20e529eddbec511edb4d8e9662a40
--- /dev/null
+++ b/miosix/arch/cortexM3_efm32gg/common/drivers/adc.h
@@ -0,0 +1,81 @@
+/***************************************************************************
+ * Copyright (C) 2023 by Terraneo Federico *
+ * *
+ * This program is free software; you can redistribute it and/or modify *
+ * it under the terms of the GNU General Public License as published by *
+ * the Free Software Foundation; either version 2 of the License, or *
+ * (at your option) any later version. *
+ * *
+ * This program is distributed in the hope that it will be useful, *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
+ * GNU General Public License for more details. *
+ * *
+ * As a special exception, if other files instantiate templates or use *
+ * macros or inline functions from this file, or you compile this file *
+ * and link it with other works to produce a work based on this file, *
+ * this file does not by itself cause the resulting work to be covered *
+ * by the GNU General Public License. However the source code for this *
+ * file must still be made available in accordance with the GNU General *
+ * Public License. This exception does not invalidate any other reasons *
+ * why a work based on this file might be covered by the GNU General *
+ * Public License. *
+ * *
+ * You should have received a copy of the GNU General Public License *
+ * along with this program; if not, see <http://www.gnu.org/licenses/> *
+ ***************************************************************************/
+
+#pragma once
+
+/**
+ * Efm32 ADC driver
+ *
+ * Example code
+ * \code
+ * {
+ * FastInterruptDisableLock dLock;
+ * //GPIO digital logic must be disabled to use as ADC input
+ * expansion::gpio0::mode(Mode::DISABLED); //GPIO0 is PD3 or ADC0_CH3
+ * expansion::gpio1::mode(Mode::OUTPUT_HIGH);
+ * }
+ * auto& adc=Adc::instance();
+ * adc.powerMode(Adc::OnDemand);
+ * for(;;)
+ * {
+ * iprintf("%d\n",adc.readChannel(3));
+ * Thread::sleep(500);
+ * }
+ * \endcode
+ */
+class Adc
+{
+public:
+ /**
+ * Possible ADC power modes
+ */
+ enum AdcPowerMode
+ {
+ Off, On, OnDemand
+ };
+
+ /**
+ * \return an instance to the ADC (singleton)
+ */
+ static Adc& instance();
+
+ /**
+ * Change the ADC power mode
+ * \param mode power mode
+ */
+ void powerMode(AdcPowerMode mode);
+
+ /**
+ * Read an ADC channel
+ * \param channel channel to read
+ * \return ADC sample, in the 0..4095 range
+ */
+ unsigned short readChannel(int channel);
+
+public:
+ Adc();
+};
diff --git a/miosix/config/Makefile.inc b/miosix/config/Makefile.inc
index ac7765758b7fd2d66bfbd2f645c500641dad9ff4..c591e9942d14a4d317a51dbce963532100be8e1e 100644
--- a/miosix/config/Makefile.inc
+++ b/miosix/config/Makefile.inc
@@ -2248,6 +2248,7 @@ else ifeq ($(ARCH),cortexM3_efm32gg)
ARCH_SRC += \
arch/common/core/interrupts_cortexMx.cpp \
arch/common/drivers/serial_efm32.cpp \
+ $(ARCH_INC)/drivers/adc.cpp \
$(ARCH_INC)/interfaces-impl/portability.cpp \
$(ARCH_INC)/interfaces-impl/gpio_impl.cpp \
$(ARCH_INC)/interfaces-impl/delays.cpp \