diff --git a/arch/arm/src/stm32/stm32_hrtim.c b/arch/arm/src/stm32/stm32_hrtim.c
index 717321ccce..70f922a91e 100644
--- a/arch/arm/src/stm32/stm32_hrtim.c
+++ b/arch/arm/src/stm32/stm32_hrtim.c
@@ -57,8 +57,6 @@
 
 #if defined(CONFIG_STM32_STM32F33XX)
 
-#warning "HRTIM UNDER DEVELOPMENT !"
-
 #if defined(CONFIG_STM32_HRTIM_TIMA_PWM) || defined(CONFIG_STM32_HRTIM_TIMA_DAC) || \
     defined(CONFIG_STM32_HRTIM_TIMA_CAP) || defined(CONFIG_STM32_HRTIM_TIMA_IRQ) || \
     defined(CONFIG_STM32_HRTIM_TIMA_DT)  || defined(CONFIG_STM32_HRTIM_TIMA_CHOP)
@@ -231,11 +229,6 @@
 
 /* HRTIM default configuration **********************************************/
 
-#ifndef HRTIM_MASTER_PRESCALER
-#  warning "HRTIM_MASTER_PRESCALER is not set. Set the default value HRTIM_PRESCALER_2"
-#  define HRTIM_MASTER_PRESCALER HRTIM_PRESCALER_2
-#endif
-
 #if defined(CONFIG_STM32_HRTIM_MASTER) && !defined(HRTIM_MASTER_MODE)
 #  warning "HRTIM_MASTER_MODE is not set. Set the default value 0"
 #  define HRTIM_MASTER_MODE 0
@@ -3604,8 +3597,46 @@ errout:
 static uint16_t hrtim_deadtime_get(FAR struct hrtim_dev_s *dev, uint8_t timer,
                                    uint8_t dt)
 {
-#warning missing logic
-  return 0;
+  FAR struct stm32_hrtim_s *priv = (FAR struct stm32_hrtim_s *)dev->hd_priv;
+  uint16_t regval = 0;
+  uint32_t shift  = 0;
+  uint32_t mask   = 0;
+
+  /* Get shift value */
+
+  switch (dt)
+    {
+      case HRTIM_DT_EDGE_RISING:
+        {
+          shift = HRTIM_TIMDT_DTR_SHIFT;
+          mask  = HRTIM_TIMDT_DTR_MASK;
+          break;
+        }
+
+      case HRTIM_DT_EDGE_FALLING:
+        {
+          shift = HRTIM_TIMDT_DTF_SHIFT;
+          mask  = HRTIM_TIMDT_DTF_MASK;
+          break;
+        }
+
+      default:
+        {
+          regval = 0;
+          goto errout;
+        }
+    }
+
+  /* Get Deadtime Register */
+
+  regval = hrtim_tim_getreg(priv, timer, STM32_HRTIM_TIM_DTR_OFFSET);
+
+  /* Get Deadtime value  */
+
+  regval = (regval & mask) >> shift;
+
+errout:
+  return regval;
 }
 
 /****************************************************************************
diff --git a/arch/arm/src/stm32/stm32f33xxx_adc.c b/arch/arm/src/stm32/stm32f33xxx_adc.c
index 3369b2da56..77d326ccb5 100644
--- a/arch/arm/src/stm32/stm32f33xxx_adc.c
+++ b/arch/arm/src/stm32/stm32f33xxx_adc.c
@@ -119,6 +119,10 @@
 #  define ADC2_HAVE_JEXTSEL
 #endif
 
+#if defined(CONFIG_STM32_ADC_NOIRQ) && defined(ADC_HAVE_DMA)
+#  error "ADC DMA support requires common ADC interrupts"
+#endif
+
 /* RCC reset ****************************************************************/
 
 #define STM32_RCC_RSTR    STM32_RCC_AHBRSTR
@@ -162,10 +166,13 @@
  */
 
 #define ADC_MAX_CHANNELS_DMA   16
+#define ADC_MAX_CHANNELS_NOIRQ 16
 #define ADC_MAX_CHANNELS_NODMA 1
 
-#ifdef ADC_HAVE_DMA
+#if defined(ADC_HAVE_DMA)
 #  define ADC_REG_MAX_SAMPLES ADC_MAX_CHANNELS_DMA
+#elif defined(CONFIG_STM32_ADC_NOIRQ)
+#  define ADC_REG_MAX_SAMPLES ADC_MAX_CHANNELS_NOIRQ
 #else
 #  define ADC_REG_MAX_SAMPLES ADC_MAX_CHANNELS_NODMA
 #endif
@@ -1911,7 +1918,7 @@ static uint32_t adc_sqrbits(FAR struct stm32_dev_s *priv, int first, int last,
        i < priv->rnchannels && i < last;
        i++, offset += ADC_SQ_OFFSET)
     {
-      bits |= (uint32_t)priv->r_chanlist[i] << offset;
+      bits |= ((uint32_t)priv->r_chanlist[i]) << offset;
     }
 
   return bits;
diff --git a/configs/stm32f334-disco/include/board.h b/configs/stm32f334-disco/include/board.h
index c138e01cab..00fc30ad11 100644
--- a/configs/stm32f334-disco/include/board.h
+++ b/configs/stm32f334-disco/include/board.h
@@ -281,6 +281,8 @@
 
 #define HRTIM_TIMA_PRESCALER HRTIM_PRESCALER_1
 #define HRTIM_TIMA_MODE      HRTIM_MODE_CONT
+#define HRTIM_TIMA_UPDATE    0
+#define HRTIM_TIMA_RESET     0
 
 #define HRTIM_TIMA_CH1_SET   HRTIM_OUT_SET_NONE
 #define HRTIM_TIMA_CH1_RST   HRTIM_OUT_RST_NONE
@@ -299,6 +301,8 @@
 
 #define HRTIM_TIMB_PRESCALER HRTIM_PRESCALER_1
 #define HRTIM_TIMB_MODE      HRTIM_MODE_CONT
+#define HRTIM_TIMB_UPDATE    0
+#define HRTIM_TIMB_RESET     0
 
 #define HRTIM_TIMB_CH1_SET   HRTIM_OUT_SET_NONE
 #define HRTIM_TIMB_CH1_RST   HRTIM_OUT_RST_NONE
diff --git a/configs/stm32f334-disco/src/stm32_smps.c b/configs/stm32f334-disco/src/stm32_smps.c
index 3a7dc3c26e..7fa0fe2436 100644
--- a/configs/stm32f334-disco/src/stm32_smps.c
+++ b/configs/stm32f334-disco/src/stm32_smps.c
@@ -68,8 +68,6 @@
 
 #if defined(CONFIG_EXAMPLES_SMPS) && defined(CONFIG_DRIVERS_SMPS)
 
-#warning "STM32F334-DISCO buck-boost converter example under development!"
-
 #ifndef CONFIG_ARCH_HIPRI_INTERRUPT
 #  error CONFIG_ARCH_HIPRI_INTERRUPT is required
 #endif
@@ -643,25 +641,21 @@ static int smps_state_get(FAR struct smps_dev_s *dev,
 
 static int smps_fault_set(FAR struct smps_dev_s *dev, uint8_t fault)
 {
-#warning "missing logic"
   return OK;
 }
 
 static int smps_fault_get(FAR struct smps_dev_s *dev, FAR uint8_t *fault)
 {
-#warning "missing logic"
   return OK;
 }
 
 static int smps_fault_clean(FAR struct smps_dev_s *dev, uint8_t fault)
 {
-#warning "missing logic"
   return OK;
 }
 
 static int smps_ioctl(FAR struct smps_dev_s *dev, int cmd, unsigned long arg)
 {
-#warning "missing logic"
   return OK;
 }