diff --git a/demos/STM32/NIL-STM32H755ZI-NUCLEO144/cfg/mcuconf.h b/demos/STM32/NIL-STM32H755ZI-NUCLEO144/cfg/mcuconf.h
index 4f7064081..ac77a100d 100644
--- a/demos/STM32/NIL-STM32H755ZI-NUCLEO144/cfg/mcuconf.h
+++ b/demos/STM32/NIL-STM32H755ZI-NUCLEO144/cfg/mcuconf.h
@@ -224,7 +224,7 @@
  * ADC driver system settings.
  */
 #define STM32_ADC_DUAL_MODE                 FALSE
-#define STM32_ADC_COMPACT_SAMPLES           FALSE
+#define STM32_ADC_SAMPLES_SIZE              16
 #define STM32_ADC_USE_ADC12                 FALSE
 #define STM32_ADC_USE_ADC3                  FALSE
 #define STM32_ADC_ADC12_DMA_STREAM          STM32_DMA_STREAM_ID_ANY
diff --git a/demos/STM32/RT-STM32H743ZI_REV_XY-NUCLEO144/cfg/mcuconf.h b/demos/STM32/RT-STM32H743ZI_REV_XY-NUCLEO144/cfg/mcuconf.h
index e32c25e4d..a43cbf6d7 100644
--- a/demos/STM32/RT-STM32H743ZI_REV_XY-NUCLEO144/cfg/mcuconf.h
+++ b/demos/STM32/RT-STM32H743ZI_REV_XY-NUCLEO144/cfg/mcuconf.h
@@ -224,7 +224,7 @@
  * ADC driver system settings.
  */
 #define STM32_ADC_DUAL_MODE                 FALSE
-#define STM32_ADC_COMPACT_SAMPLES           FALSE
+#define STM32_ADC_SAMPLES_SIZE              16
 #define STM32_ADC_USE_ADC12                 FALSE
 #define STM32_ADC_USE_ADC3                  FALSE
 #define STM32_ADC_ADC12_DMA_STREAM          STM32_DMA_STREAM_ID_ANY
diff --git a/demos/STM32/RT-STM32H750XB-DISCOVERY/cfg/mcuconf.h b/demos/STM32/RT-STM32H750XB-DISCOVERY/cfg/mcuconf.h
index 8eb7e71b8..31aae3f5e 100644
--- a/demos/STM32/RT-STM32H750XB-DISCOVERY/cfg/mcuconf.h
+++ b/demos/STM32/RT-STM32H750XB-DISCOVERY/cfg/mcuconf.h
@@ -224,7 +224,7 @@
  * ADC driver system settings.
  */
 #define STM32_ADC_DUAL_MODE                 FALSE
-#define STM32_ADC_COMPACT_SAMPLES           FALSE
+#define STM32_ADC_SAMPLES_SIZE              16
 #define STM32_ADC_USE_ADC12                 FALSE
 #define STM32_ADC_USE_ADC3                  FALSE
 #define STM32_ADC_ADC12_DMA_STREAM          STM32_DMA_STREAM_ID_ANY
diff --git a/demos/STM32/RT-STM32H755ZI-NUCLEO144/cfg/mcuconf.h b/demos/STM32/RT-STM32H755ZI-NUCLEO144/cfg/mcuconf.h
index 21fc7770a..afa70db24 100644
--- a/demos/STM32/RT-STM32H755ZI-NUCLEO144/cfg/mcuconf.h
+++ b/demos/STM32/RT-STM32H755ZI-NUCLEO144/cfg/mcuconf.h
@@ -224,7 +224,7 @@
  * ADC driver system settings.
  */
 #define STM32_ADC_DUAL_MODE                 FALSE
-#define STM32_ADC_COMPACT_SAMPLES           FALSE
+#define STM32_ADC_SAMPLES_SIZE              16
 #define STM32_ADC_USE_ADC12                 FALSE
 #define STM32_ADC_USE_ADC3                  FALSE
 #define STM32_ADC_ADC12_DMA_STREAM          STM32_DMA_STREAM_ID_ANY
diff --git a/os/hal/ports/STM32/LLD/ADCv4/hal_adc_lld.c b/os/hal/ports/STM32/LLD/ADCv4/hal_adc_lld.c
index 3810cf393..689db85e5 100644
--- a/os/hal/ports/STM32/LLD/ADCv4/hal_adc_lld.c
+++ b/os/hal/ports/STM32/LLD/ADCv4/hal_adc_lld.c
@@ -31,34 +31,37 @@
 /*===========================================================================*/
 
 #if STM32_ADC_DUAL_MODE == TRUE
-#define ADC12_CCR_DUAL 	0b00110 // TODO use definitions
-#if STM32_ADC_COMPACT_SAMPLES == TRUE
+#define ADC12_CCR_DUAL 	ADC_CCR_DUAL_REG_SIMULT
+#if STM32_ADC_SAMPLES_SIZE == 8
 /* Compact type dual mode, 2x8-bit.*/
 #define ADC12_DMA_SIZE  (STM32_DMA_CR_MSIZE_HWORD | STM32_DMA_CR_PSIZE_HWORD)
 #define ADC3_BDMA_SIZE  (STM32_BDMA_CR_MSIZE_BYTE | STM32_BDMA_CR_PSIZE_BYTE)
 #define ADC_DMA_DAMDF   ADC_CCR_DAMDF_BYTE
 
-#else /* STM32_ADC_COMPACT_SAMPLES == FALSE */
+#else /* STM32_ADC_SAMPLES_SIZE == 16 */
 /* Large type dual mode, 2x16bit.*/
 #define ADC12_DMA_SIZE  (STM32_DMA_CR_MSIZE_WORD | STM32_DMA_CR_PSIZE_WORD)
 #define ADC3_BDMA_SIZE  (STM32_BDMA_CR_MSIZE_HWORD | STM32_BDMA_CR_PSIZE_HWORD)
 #define ADC_DMA_DAMDF   ADC_CCR_DAMDF_HWORD
-#endif /* !STM32_ADC_COMPACT_SAMPLES */
+#endif /*  STM32_ADC_SAMPLES_SIZE == 8 */
 
 #else /* STM32_ADC_DUAL_MODE == FALSE */
-#define ADC12_CCR_DUAL 	0b00000 // TODO use definitions
-#if STM32_ADC_COMPACT_SAMPLES
+#define ADC12_CCR_DUAL 	ADC_CCR_DUAL_INDEPENDENT
+#if STM32_ADC_SAMPLES_SIZE == 8
 /* Compact type single mode, 8-bit.*/
 #define ADC12_DMA_SIZE  (STM32_DMA_CR_MSIZE_BYTE | STM32_DMA_CR_PSIZE_BYTE)
 #define ADC3_BDMA_SIZE  (STM32_BDMA_CR_MSIZE_BYTE | STM32_BDMA_CR_PSIZE_BYTE)
 #define ADC_DMA_DAMDF   ADC_CCR_DAMDF_DISABLED
-
-#else /* STM32_ADC_COMPACT_SAMPLES == FALSE */
+#elif STM32_ADC_SAMPLES_SIZE == 32
+#define ADC12_DMA_SIZE  (STM32_DMA_CR_MSIZE_WORD | STM32_DMA_CR_PSIZE_WORD)
+#define ADC3_BDMA_SIZE  (STM32_BDMA_CR_MSIZE_WORD | STM32_BDMA_CR_PSIZE_WORD)
+#define ADC_DMA_DAMDF   ADC_CCR_DAMDF_DISABLED
+#else /* STM32_ADC_SAMPLES_SIZE == 16 */
 /* Large type single mode, 16-bit.*/
 #define ADC12_DMA_SIZE  (STM32_DMA_CR_MSIZE_HWORD | STM32_DMA_CR_PSIZE_HWORD)
 #define ADC3_BDMA_SIZE  (STM32_BDMA_CR_MSIZE_HWORD | STM32_BDMA_CR_PSIZE_HWORD)
 #define ADC_DMA_DAMDF   ADC_CCR_DAMDF_DISABLED
-#endif /* STM32_ADC_COMPACT_SAMPLES == FALSE */
+#endif /* STM32_ADC_SAMPLES_SIZE == 8 */
 #endif /* STM32_ADC_DUAL_MODE == FALSE */
 
 /*===========================================================================*/
@@ -140,7 +143,7 @@ static void adc_lld_analog_on(ADCDriver *adcp) {
 }
 
 /**
- * @brief   Disables the ADC  analog circuit.
+ * @brief   Disables the ADC analog circuit.
  *
  * @param[in] adcp      pointer to the @p ADCDriver object
  */
diff --git a/os/hal/ports/STM32/LLD/ADCv4/hal_adc_lld.h b/os/hal/ports/STM32/LLD/ADCv4/hal_adc_lld.h
index d23c95045..433f5fbf2 100644
--- a/os/hal/ports/STM32/LLD/ADCv4/hal_adc_lld.h
+++ b/os/hal/ports/STM32/LLD/ADCv4/hal_adc_lld.h
@@ -197,12 +197,14 @@
 #endif
 
 /**
- * @brief   Makes the ADC samples type an 8bits one.
- * @note    10, 12, 14 and 16 bits sampling mode must not be used when this
- *          option is enabled.
+ * @brief   Specifies the ADC samples width.
+ * @note    Must be 8, 16 or 32.
+ * @note    10, 12, 14 and 16 bits sampling modes must not be used when 
+ *          this option is set to 8.
+ * @note    32 is useful when oversampling is activated.
  */
-#if !defined(STM32_ADC_COMPACT_SAMPLES) || defined(__DOXYGEN__)
-#define STM32_ADC_COMPACT_SAMPLES           FALSE
+#if !defined(STM32_ADC_SAMPLES_SIZE) || defined(__DOXYGEN__)
+#define STM32_ADC_SAMPLES_SIZE               16
 #endif
 
 /**
@@ -372,6 +374,16 @@
 #error "Invalid IRQ priority assigned to ADC3"
 #endif
 
+#if ((STM32_ADC_SAMPLES_SIZE != 8)  &&					                    \
+     (STM32_ADC_SAMPLES_SIZE != 16) &&				                        \
+     (STM32_ADC_SAMPLES_SIZE != 32))
+#error "STM32_ADC_SAMPLES_SIZE must be 8, 16 or 32"
+#endif
+
+#if (STM32_ADC_SAMPLES_SIZE != 32) && STM32_ADC_DUAL_MODE
+#error "STM32_ADC_SAMPLES_SIZE = 32 not compatible with STM32_ADC_DUAL_MODE"
+#endif
+
 #if !defined(STM32_ENFORCE_H7_REV_XY)
 /* ADC clock source checks.*/
 #if (STM32_D1HPRE == STM32_D1HPRE_DIV1)
@@ -505,10 +517,12 @@
 /**
  * @brief   ADC sample data type.
  */
-#if !STM32_ADC_COMPACT_SAMPLES || defined(__DOXYGEN__)
+#if (STM32_ADC_SAMPLES_SIZE == 16) || defined(__DOXYGEN__)
 typedef uint16_t adcsample_t;
-#else
+#elif (STM32_ADC_SAMPLES_SIZE == 8)
 typedef uint8_t adcsample_t;
+#elif (STM32_ADC_SAMPLES_SIZE == 32)
+typedef uint32_t adcsample_t;
 #endif
 
 /**
@@ -716,6 +730,15 @@ typedef union {
 #define ADC_AWD23_MASK(n)       (1U << (n)) /**< @brief AWD2/3 channels mask*/
 /** @} */
 
+/**
+ * @name    Oversampling settings helper macros
+ * @{
+ */
+#define ADC_CFGR2_OVSS_N(n)     ((n) << 5U)/**< @brief ovsr right shift */
+#define ADC_CFGR2_OVSR_N(n)     ((n) << 16U)/**< @brief oversampling ratio */
+#define ADC_CFGR2_LSHIFT_N(n)   ((n) << 28U)/**< @brief ovsr left shift */
+
+/** @} */
 
 /*===========================================================================*/
 /* External declarations.                                                    */
diff --git a/testhal/STM32/multi/ADC/cfg/stm32h743zi_nucleo144/mcuconf.h b/testhal/STM32/multi/ADC/cfg/stm32h743zi_nucleo144/mcuconf.h
index 1949934cb..80c66c9b8 100644
--- a/testhal/STM32/multi/ADC/cfg/stm32h743zi_nucleo144/mcuconf.h
+++ b/testhal/STM32/multi/ADC/cfg/stm32h743zi_nucleo144/mcuconf.h
@@ -224,7 +224,7 @@
  * ADC driver system settings.
  */
 #define STM32_ADC_DUAL_MODE                 FALSE
-#define STM32_ADC_COMPACT_SAMPLES           FALSE
+#define STM32_ADC_SAMPLES_SIZE              16
 #define STM32_ADC_USE_ADC12                 TRUE
 #define STM32_ADC_USE_ADC3                  TRUE
 #define STM32_ADC_ADC12_DMA_STREAM          STM32_DMA_STREAM_ID_ANY
diff --git a/testhal/STM32/multi/DAC/cfg/stm32h743_nucleo144/mcuconf.h b/testhal/STM32/multi/DAC/cfg/stm32h743_nucleo144/mcuconf.h
index 423dbb597..82d6689c0 100644
--- a/testhal/STM32/multi/DAC/cfg/stm32h743_nucleo144/mcuconf.h
+++ b/testhal/STM32/multi/DAC/cfg/stm32h743_nucleo144/mcuconf.h
@@ -224,7 +224,7 @@
  * ADC driver system settings.
  */
 #define STM32_ADC_DUAL_MODE                 FALSE
-#define STM32_ADC_COMPACT_SAMPLES           FALSE
+#define STM32_ADC_SAMPLES_SIZE              16
 #define STM32_ADC_USE_ADC12                 FALSE
 #define STM32_ADC_USE_ADC3                  FALSE
 #define STM32_ADC_ADC12_DMA_STREAM          STM32_DMA_STREAM_ID_ANY
diff --git a/testhal/STM32/multi/SPI/cfg/stm32h743_nucleo144/mcuconf.h b/testhal/STM32/multi/SPI/cfg/stm32h743_nucleo144/mcuconf.h
index 85f70ff66..e39568f05 100644
--- a/testhal/STM32/multi/SPI/cfg/stm32h743_nucleo144/mcuconf.h
+++ b/testhal/STM32/multi/SPI/cfg/stm32h743_nucleo144/mcuconf.h
@@ -224,7 +224,7 @@
  * ADC driver system settings.
  */
 #define STM32_ADC_DUAL_MODE                 FALSE
-#define STM32_ADC_COMPACT_SAMPLES           FALSE
+#define STM32_ADC_SAMPLES_SIZE              16
 #define STM32_ADC_USE_ADC12                 TRUE
 #define STM32_ADC_USE_ADC3                  FALSE
 #define STM32_ADC_ADC12_DMA_STREAM          STM32_DMA_STREAM_ID_ANY
diff --git a/testhal/STM32/multi/SPI/cfg/stm32h755_nucleo144/mcuconf.h b/testhal/STM32/multi/SPI/cfg/stm32h755_nucleo144/mcuconf.h
index 4064e4467..713dae546 100644
--- a/testhal/STM32/multi/SPI/cfg/stm32h755_nucleo144/mcuconf.h
+++ b/testhal/STM32/multi/SPI/cfg/stm32h755_nucleo144/mcuconf.h
@@ -224,7 +224,7 @@
  * ADC driver system settings.
  */
 #define STM32_ADC_DUAL_MODE                 FALSE
-#define STM32_ADC_COMPACT_SAMPLES           FALSE
+#define STM32_ADC_SAMPLES_SIZE              16
 #define STM32_ADC_USE_ADC12                 FALSE
 #define STM32_ADC_USE_ADC3                  FALSE
 #define STM32_ADC_ADC12_DMA_STREAM          STM32_DMA_STREAM_ID_ANY
diff --git a/testhal/STM32/multi/USB_CDC/cfg/stm32h743_nucleo144/mcuconf.h b/testhal/STM32/multi/USB_CDC/cfg/stm32h743_nucleo144/mcuconf.h
index a23a8429f..7c85d0d64 100644
--- a/testhal/STM32/multi/USB_CDC/cfg/stm32h743_nucleo144/mcuconf.h
+++ b/testhal/STM32/multi/USB_CDC/cfg/stm32h743_nucleo144/mcuconf.h
@@ -224,7 +224,7 @@
  * ADC driver system settings.
  */
 #define STM32_ADC_DUAL_MODE                 FALSE
-#define STM32_ADC_COMPACT_SAMPLES           FALSE
+#define STM32_ADC_SAMPLES_SIZE              16
 #define STM32_ADC_USE_ADC12                 TRUE
 #define STM32_ADC_USE_ADC3                  FALSE
 #define STM32_ADC_ADC12_DMA_STREAM          STM32_DMA_STREAM_ID_ANY
diff --git a/tools/ftl/processors/conf/mcuconf_stm32h743xx/mcuconf.h.ftl b/tools/ftl/processors/conf/mcuconf_stm32h743xx/mcuconf.h.ftl
index 19bcf71e5..af4874ebf 100644
--- a/tools/ftl/processors/conf/mcuconf_stm32h743xx/mcuconf.h.ftl
+++ b/tools/ftl/processors/conf/mcuconf_stm32h743xx/mcuconf.h.ftl
@@ -235,7 +235,7 @@
  * ADC driver system settings.
  */
 #define STM32_ADC_DUAL_MODE                 ${doc.STM32_ADC_DUAL_MODE!"FALSE"}
-#define STM32_ADC_COMPACT_SAMPLES           ${doc.STM32_ADC_COMPACT_SAMPLES!"FALSE"}
+#define STM32_ADC_SAMPLES_SIZE              ${doc.STM32_ADC_SAMPLES_SIZE!"16"}
 #define STM32_ADC_USE_ADC12                 ${doc.STM32_ADC_USE_ADC12!"TRUE"}
 #define STM32_ADC_USE_ADC3                  ${doc.STM32_ADC_USE_ADC3!"FALSE"}
 #define STM32_ADC_ADC12_DMA_STREAM          ${doc.STM32_ADC_ADC12_DMA_STREAM!"STM32_DMA_STREAM_ID_ANY"}