ST STM32F31xx

UM1581
System configuration controller (SYSCFG)
DocID023800 Rev 1
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21.2.3.3 SYSCFG_DMAChannelRemapConfig
Function Name
void SYSCFG_DMAChannelRemapConfig ( uint32_t
SYSCFG_DMARemap, FunctionalState NewState)
Function
Description
Configures the DMA channels remapping.
Parameters
 SYSCFG_DMARemap : selects the DMA channels remap. This
parameter can be one of the following values:
 SYSCFG_DMARemap_TIM17 : Remap TIM17 DMA
requests from DMA1 channel1 to channel2
 SYSCFG_DMARemap_TIM16 : Remap TIM16 DMA
requests from DMA1 channel3 to channel4
 SYSCFG_DMARemap_TIM6DAC1 : Remap TIM6/DAC1
DMA requests from DMA2 channel 3 to DMA1 channel 3
 SYSCFG_DMARemap_TIM7DAC2 : Remap TIM7/DAC2
DMA requests from DMA2 channel 4 to DMA1 channel 4
 SYSCFG_DMARemap_ADC2ADC4 : Remap ADC2 and
ADC4 DMA requests from DMA2 channel1/channel3 to
channel3/channel4
 NewState : new state of the DMA channel remapping. This
parameter can be: Enable or Disable.
Return values
 None.
Notes
 When enabled, DMA channel of the selected peripheral is
remapped
 When disabled, Default DMA channel is mapped to the selected
peripheral
 By default TIM17 DMA requests is mapped to channel 1 use
SYSCFG_DMAChannelRemapConfig(SYSCFG_DMARemap_TI
M17, Enable) to remap TIM17 DMA requests to DMA1 channel 2
use
SYSCFG_DMAChannelRemapConfig(SYSCFG_DMARemap_TI
M17, Disable) to map TIM17 DMA requests to DMA1 channel 1
(default mapping)
21.2.3.4 SYSCFG_TriggerRemapConfig
Function Name
void SYSCFG_TriggerRemapConfig ( uint32_t
SYSCFG_TriggerRemap, FunctionalState NewState)
Function Description
Configures the remapping capabilities of DAC/TIM triggers.
Parameters
 SYSCFG_TriggerRemap : selects the trigger to be
remapped. This parameter can be one of the following values:
 SYSCFG_TriggerRemap_DACTIM3 : Remap DAC