diff --git a/lib/stm32/f3/adc.c b/lib/stm32/f3/adc.c
index 0b402c75..5715935c 100644
--- a/lib/stm32/f3/adc.c
+++ b/lib/stm32/f3/adc.c
@@ -295,38 +295,6 @@ void adc_enable_analog_watchdog_on_selected_channel(uint32_t adc,
 	ADC_CFGR1(adc) |= ADC_CFGR1_AWD1SGL;
 }
 
-/*---------------------------------------------------------------------------*/
-/** @brief ADC Set Scan Mode
- *
- * In this mode a conversion consists of a scan of the predefined set of
- * channels, regular and injected, each channel conversion immediately
- * following the previous one. It can use single, continuous or discontinuous
- * mode.
- *
- * @param[in] adc Unsigned int32. ADC block register address base @ref
- * adc_reg_base
- */
-
-/*
-void adc_enable_scan_mode(uint32_t adc)
-{
-	ADC_CR1(adc) |= ADC_CR1_SCAN;
-}
-*/
-
-/*---------------------------------------------------------------------------*/
-/** @brief ADC Disable Scan Mode
- *
- * @param[in] adc Unsigned int32. ADC block register address base @ref
- * adc_reg_base
- */
-
-/*
-void adc_disable_scan_mode(uint32_t adc)
-{
-	ADC_CR1(adc) &= ~ADC_CR1_SCAN;
-}
-*/
 
 /*---------------------------------------------------------------------------*/
 /** @brief ADC Enable Injected End-Of-Conversion Interrupt
@@ -723,40 +691,6 @@ void adc_disable_external_trigger_injected(uint32_t adc)
 	ADC_JSQR(adc) &= ~ADC_JSQR_JEXTEN_MASK;
 }
 
-/*---------------------------------------------------------------------------*/
-/** @brief ADC Set DMA to Continue
- *
- * This must be set to allow DMA to continue to operate after the last
- * conversion in the DMA sequence. This allows DMA to be used in continuous
- * circular mode.
- *
- * @param[in] adc Unsigned int32. ADC block register address base @ref
- * adc_reg_base
- */
-
-/*
-void adc_set_dma_continue(uint32_t adc)
-{
-	ADC_CR2(adc) |= ADC_CR2_DDS;
-}
-*/
-
-/*---------------------------------------------------------------------------*/
-/** @brief ADC Set DMA to Terminate
- *
- * This must be set to allow DMA to terminate after the last conversion in the
- * DMA sequence. This can avoid overrun errors.
- *
- * @param[in] adc Unsigned int32. ADC block register address base
- * @ref adc_reg_base
- */
-
-/*
-void adc_set_dma_terminate(uint32_t adc)
-{
-	ADC_CR2(adc) &= ~ADC_CR2_DDS;
-}
-*/
 
 /*---------------------------------------------------------------------------*/
 /** @brief ADC Read the Analog Watchdog Flag