diff --git a/os/hal/boards/ST_NUCLEO32_F031K6/board.h b/os/hal/boards/ST_NUCLEO32_F031K6/board.h
index 12867057e..471ea4e1d 100644
--- a/os/hal/boards/ST_NUCLEO32_F031K6/board.h
+++ b/os/hal/boards/ST_NUCLEO32_F031K6/board.h
@@ -222,8 +222,8 @@
  * PA2  - VCP_TX                    (alternate 1).
  * PA3  - ARD_A2                    (input pullup).
  * PA4  - ARD_A3                    (input pullup).
- * PA5  - ARD_A4                    (input floating).
- * PA6  - ARD_A5                    (input floating).
+ * PA5  - ARD_A4                    (input pullup).
+ * PA6  - ARD_A5                    (input pullup).
  * PA7  - ARD_A6                    (input pullup).
  * PA8  - ARD_D9                    (input pullup).
  * PA9  - ARD_D1                    (input pullup).
@@ -287,8 +287,8 @@
                                      PIN_PUPDR_FLOATING(GPIOA_VCP_TX) |     \
                                      PIN_PUPDR_PULLUP(GPIOA_ARD_A2) |       \
                                      PIN_PUPDR_PULLUP(GPIOA_ARD_A3) |       \
-                                     PIN_PUPDR_FLOATING(GPIOA_ARD_A4) |     \
-                                     PIN_PUPDR_FLOATING(GPIOA_ARD_A5) |     \
+                                     PIN_PUPDR_PULLUP(GPIOA_ARD_A4) |       \
+                                     PIN_PUPDR_PULLUP(GPIOA_ARD_A5) |       \
                                      PIN_PUPDR_PULLUP(GPIOA_ARD_A6) |       \
                                      PIN_PUPDR_PULLUP(GPIOA_ARD_D9) |       \
                                      PIN_PUPDR_PULLUP(GPIOA_ARD_D1) |       \
@@ -342,7 +342,7 @@
  * PB5  - ARD_D11                   (input pullup).
  * PB6  - ARD_D5 ARD_A5_ALT         (input pullup).
  * PB7  - ARD_D4 ARD_A4_ALT         (input pullup).
- * PB8  - PIN8                      (input floating).
+ * PB8  - PIN8                      (input pullup).
  * PB9  - PIN9                      (input pullup).
  * PB10 - PIN10                     (input pullup).
  * PB11 - PIN11                     (input pullup).
@@ -407,7 +407,7 @@
                                      PIN_PUPDR_PULLUP(GPIOB_ARD_D11) |      \
                                      PIN_PUPDR_PULLUP(GPIOB_ARD_D5) |       \
                                      PIN_PUPDR_PULLUP(GPIOB_ARD_D4) |       \
-                                     PIN_PUPDR_FLOATING(GPIOB_PIN8) |       \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN8) |         \
                                      PIN_PUPDR_PULLUP(GPIOB_PIN9) |         \
                                      PIN_PUPDR_PULLUP(GPIOB_PIN10) |        \
                                      PIN_PUPDR_PULLUP(GPIOB_PIN11) |        \
diff --git a/os/hal/boards/ST_NUCLEO32_F031K6/cfg/board.chcfg b/os/hal/boards/ST_NUCLEO32_F031K6/cfg/board.chcfg
index 0ede126ec..cd8ab4332 100644
--- a/os/hal/boards/ST_NUCLEO32_F031K6/cfg/board.chcfg
+++ b/os/hal/boards/ST_NUCLEO32_F031K6/cfg/board.chcfg
@@ -61,7 +61,7 @@
         Type="PushPull"
         Level="Low"
         Speed="High"
-        Resistor="Floating"
+        Resistor="PullUp"
         Mode="Input"
         Alternate="0" />
       <pin6
@@ -69,7 +69,7 @@
         Type="PushPull"
         Level="High"
         Speed="Maximum"
-        Resistor="Floating"
+        Resistor="PullUp"
         Mode="Input"
         Alternate="0" />
       <pin7
@@ -215,7 +215,7 @@
         Type="PushPull"
         Level="High"
         Speed="Maximum"
-        Resistor="Floating"
+        Resistor="PullUp"
         Mode="Input"
         Alternate="0" />
       <pin9
diff --git a/os/hal/boards/ST_NUCLEO32_F042K6/board.h b/os/hal/boards/ST_NUCLEO32_F042K6/board.h
index 2ee3d7946..0d0d256ea 100644
--- a/os/hal/boards/ST_NUCLEO32_F042K6/board.h
+++ b/os/hal/boards/ST_NUCLEO32_F042K6/board.h
@@ -222,8 +222,8 @@
  * PA2  - VCP_TX                    (alternate 1).
  * PA3  - ARD_A2                    (input pullup).
  * PA4  - ARD_A3                    (input pullup).
- * PA5  - ARD_A4                    (input floating).
- * PA6  - ARD_A5                    (input floating).
+ * PA5  - ARD_A4                    (input pullup).
+ * PA6  - ARD_A5                    (input pullup).
  * PA7  - ARD_A6                    (input pullup).
  * PA8  - ARD_D9                    (input pullup).
  * PA9  - ARD_D1                    (input pullup).
@@ -287,8 +287,8 @@
                                      PIN_PUPDR_FLOATING(GPIOA_VCP_TX) |     \
                                      PIN_PUPDR_PULLUP(GPIOA_ARD_A2) |       \
                                      PIN_PUPDR_PULLUP(GPIOA_ARD_A3) |       \
-                                     PIN_PUPDR_FLOATING(GPIOA_ARD_A4) |     \
-                                     PIN_PUPDR_FLOATING(GPIOA_ARD_A5) |     \
+                                     PIN_PUPDR_PULLUP(GPIOA_ARD_A4) |       \
+                                     PIN_PUPDR_PULLUP(GPIOA_ARD_A5) |       \
                                      PIN_PUPDR_PULLUP(GPIOA_ARD_A6) |       \
                                      PIN_PUPDR_PULLUP(GPIOA_ARD_D9) |       \
                                      PIN_PUPDR_PULLUP(GPIOA_ARD_D1) |       \
@@ -342,7 +342,7 @@
  * PB5  - ARD_D11                   (input pullup).
  * PB6  - ARD_D5 ARD_A5_ALT         (input pullup).
  * PB7  - ARD_D4 ARD_A4_ALT         (input pullup).
- * PB8  - PIN8                      (input floating).
+ * PB8  - PIN8                      (input pullup).
  * PB9  - PIN9                      (input pullup).
  * PB10 - PIN10                     (input pullup).
  * PB11 - PIN11                     (input pullup).
@@ -407,7 +407,7 @@
                                      PIN_PUPDR_PULLUP(GPIOB_ARD_D11) |      \
                                      PIN_PUPDR_PULLUP(GPIOB_ARD_D5) |       \
                                      PIN_PUPDR_PULLUP(GPIOB_ARD_D4) |       \
-                                     PIN_PUPDR_FLOATING(GPIOB_PIN8) |       \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN8) |         \
                                      PIN_PUPDR_PULLUP(GPIOB_PIN9) |         \
                                      PIN_PUPDR_PULLUP(GPIOB_PIN10) |        \
                                      PIN_PUPDR_PULLUP(GPIOB_PIN11) |        \
diff --git a/os/hal/boards/ST_NUCLEO32_F042K6/cfg/board.chcfg b/os/hal/boards/ST_NUCLEO32_F042K6/cfg/board.chcfg
index c6e219907..00d07f4f2 100644
--- a/os/hal/boards/ST_NUCLEO32_F042K6/cfg/board.chcfg
+++ b/os/hal/boards/ST_NUCLEO32_F042K6/cfg/board.chcfg
@@ -61,7 +61,7 @@
         Type="PushPull"
         Level="Low"
         Speed="High"
-        Resistor="Floating"
+        Resistor="PullUp"
         Mode="Input"
         Alternate="0" />
       <pin6
@@ -69,7 +69,7 @@
         Type="PushPull"
         Level="High"
         Speed="Maximum"
-        Resistor="Floating"
+        Resistor="PullUp"
         Mode="Input"
         Alternate="0" />
       <pin7
@@ -215,7 +215,7 @@
         Type="PushPull"
         Level="High"
         Speed="Maximum"
-        Resistor="Floating"
+        Resistor="PullUp"
         Mode="Input"
         Alternate="0" />
       <pin9
diff --git a/os/hal/boards/ST_NUCLEO32_F303K8/board.h b/os/hal/boards/ST_NUCLEO32_F303K8/board.h
index b4f417e7c..161abf28f 100644
--- a/os/hal/boards/ST_NUCLEO32_F303K8/board.h
+++ b/os/hal/boards/ST_NUCLEO32_F303K8/board.h
@@ -222,8 +222,8 @@
  * PA2  - VCP_TX                    (alternate 7).
  * PA3  - ARD_A2                    (input pullup).
  * PA4  - ARD_A3                    (input pullup).
- * PA5  - ARD_A4                    (input floating).
- * PA6  - ARD_A5                    (input floating).
+ * PA5  - ARD_A4                    (input pullup).
+ * PA6  - ARD_A5                    (input pullup).
  * PA7  - ARD_A6                    (input pullup).
  * PA8  - ARD_D9                    (input pullup).
  * PA9  - ARD_D1                    (input pullup).
@@ -287,8 +287,8 @@
                                      PIN_PUPDR_FLOATING(GPIOA_VCP_TX) |     \
                                      PIN_PUPDR_PULLUP(GPIOA_ARD_A2) |       \
                                      PIN_PUPDR_PULLUP(GPIOA_ARD_A3) |       \
-                                     PIN_PUPDR_FLOATING(GPIOA_ARD_A4) |     \
-                                     PIN_PUPDR_FLOATING(GPIOA_ARD_A5) |     \
+                                     PIN_PUPDR_PULLUP(GPIOA_ARD_A4) |       \
+                                     PIN_PUPDR_PULLUP(GPIOA_ARD_A5) |       \
                                      PIN_PUPDR_PULLUP(GPIOA_ARD_A6) |       \
                                      PIN_PUPDR_PULLUP(GPIOA_ARD_D9) |       \
                                      PIN_PUPDR_PULLUP(GPIOA_ARD_D1) |       \
@@ -342,7 +342,7 @@
  * PB5  - ARD_D11                   (input pullup).
  * PB6  - ARD_D5 ARD_A5_ALT         (input pullup).
  * PB7  - ARD_D4 ARD_A4_ALT         (input pullup).
- * PB8  - PIN8                      (input floating).
+ * PB8  - PIN8                      (input pullup).
  * PB9  - PIN9                      (input pullup).
  * PB10 - PIN10                     (input pullup).
  * PB11 - PIN11                     (input pullup).
@@ -407,7 +407,7 @@
                                      PIN_PUPDR_PULLUP(GPIOB_ARD_D11) |      \
                                      PIN_PUPDR_PULLUP(GPIOB_ARD_D5) |       \
                                      PIN_PUPDR_PULLUP(GPIOB_ARD_D4) |       \
-                                     PIN_PUPDR_FLOATING(GPIOB_PIN8) |       \
+                                     PIN_PUPDR_PULLUP(GPIOB_PIN8) |         \
                                      PIN_PUPDR_PULLUP(GPIOB_PIN9) |         \
                                      PIN_PUPDR_PULLUP(GPIOB_PIN10) |        \
                                      PIN_PUPDR_PULLUP(GPIOB_PIN11) |        \
diff --git a/os/hal/boards/ST_NUCLEO32_F303K8/cfg/board.chcfg b/os/hal/boards/ST_NUCLEO32_F303K8/cfg/board.chcfg
index f338dd943..2eabcbe80 100644
--- a/os/hal/boards/ST_NUCLEO32_F303K8/cfg/board.chcfg
+++ b/os/hal/boards/ST_NUCLEO32_F303K8/cfg/board.chcfg
@@ -61,7 +61,7 @@
         Type="PushPull"
         Level="Low"
         Speed="High"
-        Resistor="Floating"
+        Resistor="PullUp"
         Mode="Input"
         Alternate="0" />
       <pin6
@@ -69,7 +69,7 @@
         Type="PushPull"
         Level="High"
         Speed="Maximum"
-        Resistor="Floating"
+        Resistor="PullUp"
         Mode="Input"
         Alternate="0" />
       <pin7
@@ -215,7 +215,7 @@
         Type="PushPull"
         Level="High"
         Speed="Maximum"
-        Resistor="Floating"
+        Resistor="PullUp"
         Mode="Input"
         Alternate="0" />
       <pin9
diff --git a/os/hal/ports/STM32/LLD/ADCv3/adc_lld.h b/os/hal/ports/STM32/LLD/ADCv3/adc_lld.h
index 1e29c8508..3c39560d4 100644
--- a/os/hal/ports/STM32/LLD/ADCv3/adc_lld.h
+++ b/os/hal/ports/STM32/LLD/ADCv3/adc_lld.h
@@ -35,6 +35,7 @@
  * @name    Available analog channels
  * @{
  */
+#define ADC_CHANNEL_IN0         0   /**< @brief External analog input 0.    */
 #define ADC_CHANNEL_IN1         1   /**< @brief External analog input 1.    */
 #define ADC_CHANNEL_IN2         2   /**< @brief External analog input 2.    */
 #define ADC_CHANNEL_IN3         3   /**< @brief External analog input 3.    */
@@ -59,6 +60,7 @@
  * @name    Sampling rates
  * @{
  */
+#if defined(STM32F3XX)
 #define ADC_SMPR_SMP_1P5        0   /**< @brief 14 cycles conversion time   */
 #define ADC_SMPR_SMP_2P5        1   /**< @brief 15 cycles conversion time.  */
 #define ADC_SMPR_SMP_4P5        2   /**< @brief 17 cycles conversion time.  */
@@ -67,6 +69,17 @@
 #define ADC_SMPR_SMP_61P5       5   /**< @brief 74 cycles conversion time.  */
 #define ADC_SMPR_SMP_181P5      6   /**< @brief 194 cycles conversion time. */
 #define ADC_SMPR_SMP_601P5      7   /**< @brief 614 cycles conversion time. */
+#endif
+#if defined(STM32L4XX)
+#define ADC_SMPR_SMP_2P5        0   /**< @brief 15 cycles conversion time   */
+#define ADC_SMPR_SMP_6P5        1   /**< @brief 19 cycles conversion time.  */
+#define ADC_SMPR_SMP_12P5       2   /**< @brief 25 cycles conversion time.  */
+#define ADC_SMPR_SMP_24P5       3   /**< @brief 37 cycles conversion time.  */
+#define ADC_SMPR_SMP_47P5       4   /**< @brief 60 cycles conversion time.  */
+#define ADC_SMPR_SMP_92P5       5   /**< @brief 105 cycles conversion time. */
+#define ADC_SMPR_SMP_247P5      6   /**< @brief 260 cycles conversion time. */
+#define ADC_SMPR_SMP_640P5      7   /**< @brief 653 cycles conversion time. */
+#endif
 /** @} */
 
 /**
@@ -612,7 +625,7 @@ typedef struct {
    * @note    The bits DMAEN and DMACFG are enforced internally
    *          to the driver, keep them to zero.
    * @note    The bits @p ADC_CFGR_CONT or @p ADC_CFGR_DISCEN must be
-   *          specified in continuous more or if the buffer depth is
+   *          specified in continuous mode or if the buffer depth is
    *          greater than one.
    */
   uint32_t                  cfgr;
@@ -768,6 +781,7 @@ struct ADCDriver {
  * @name    Sampling rate settings helper macros
  * @{
  */
+#define ADC_SMPR1_SMP_AN0(n)    ((n) << 0)  /**< @brief AN0 sampling time.  */
 #define ADC_SMPR1_SMP_AN1(n)    ((n) << 3)  /**< @brief AN1 sampling time.  */
 #define ADC_SMPR1_SMP_AN2(n)    ((n) << 6)  /**< @brief AN2 sampling time.  */
 #define ADC_SMPR1_SMP_AN3(n)    ((n) << 9)  /**< @brief AN3 sampling time.  */
diff --git a/testhal/STM32/STM32L4xx/GPT-ADC/main.c b/testhal/STM32/STM32L4xx/GPT-ADC/main.c
index 42e06df82..45a369663 100644
--- a/testhal/STM32/STM32L4xx/GPT-ADC/main.c
+++ b/testhal/STM32/STM32L4xx/GPT-ADC/main.c
@@ -91,20 +91,25 @@ static void adcerrorcallback(ADCDriver *adcp, adcerror_t err) {
  * ADC conversion group.
  * Mode:        Continuous, 16 samples of 2 channels, HS triggered by
  *              GPT4-TRGO.
- * Channels:    Sensor, VRef.
+ * Channels:    VRef, PC1.
  */
 static const ADCConversionGroup adcgrpcfg1 = {
   true,
   ADC_GRP1_NUM_CHANNELS,
   adccallback,
   adcerrorcallback,
-  0,                                                    /* CR1 */
-  ADC_CR2_EXTEN_RISING | ADC_CR2_EXTSEL_SRC(12),        /* CR2 */
-  ADC_SMPR1_SMP_SENSOR(ADC_SAMPLE_144) | ADC_SMPR1_SMP_VREF(ADC_SAMPLE_144),
-  0,                                                    /* SMPR2 */
-  ADC_SQR1_NUM_CH(ADC_GRP1_NUM_CHANNELS),               /* SQR1 */
-  0,                                                    /* SQR1 */
-  ADC_SQR3_SQ2_N(ADC_CHANNEL_SENSOR) | ADC_SQR3_SQ1_N(ADC_CHANNEL_VREFINT)
+  ADC_CFGR_CONT | ADC_CFGR_EXTEN_RISING | ADC_CFGR_EXTSEL_SRC(12), /* CFGR */
+  ADC_TR(0, 4095),                                          /* TR1      */
+  {                                                         /* SMPR[2]  */
+    ADC_SMPR1_SMP_AN0(ADC_SMPR_SMP_247P5),
+    ADC_SMPR2_SMP_AN11(ADC_SMPR_SMP_247P5)
+  },
+  {                                                         /* SQR[4]   */
+    ADC_SQR1_SQ1_N(ADC_CHANNEL_IN0) | ADC_SQR1_SQ2_N(ADC_CHANNEL_IN11),
+    0,
+    0,
+    0
+  }
 };
 
 /*===========================================================================*/