ST STM32F31xx - DAC Management Functions

Digital-to-analog converter (DAC)
UM1581
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DocID023800 Rev 1
7.2.6.11 DAC_GetDataOutputValue
Function Name
uint16_t DAC_GetDataOutputValue ( uint32_t DAC_Channel)
Function Description
Returns the last data output value of the selected DAC channel.
Parameters
 DAC_Channel : The selected DAC channel. This parameter
can be:
 DAC_Channel_1 : DAC Channel1 selected
 DAC_Channel_2 : DAC Channel2 selected
Return values
 The selected DAC channel data output value.
Notes
 None.
7.2.7 DAC management functions
7.2.7.1 DAC_DMACmd
Function Name
void DAC_DMACmd ( uint32_t DAC_Channel, FunctionalState
NewState)
Function Description
Enables or disables the specified DAC channel DMA request.
Parameters
 DAC_Channel : The selected DAC channel. This parameter
can be:
 DAC_Channel_1 : DAC Channel1 selected
 DAC_Channel_2 : DAC Channel2 selected
 NewState : new state of the selected DAC channel DMA
request. This parameter can be: ENABLE or DISABLE.
Return values
 None.
Notes
 When enabled DMA1 is generated when an external trigger
(EXTI Line9, TIM2, TIM4, TIM5, TIM6, TIM7 or TIM8 but not a
software trigger) occurs.
 The DAC channel1 is mapped on DMA1 Stream 5 channel7
which must be already configured.
 The DAC channel2 is mapped on DMA1 Stream 6 channel7
which must be already configured.