ST STM32F2 User Manual

UM1940
LL DAC Generic Driver
DocID028236 Rev 2
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LL_DAC_IsDMAReqEnabled
Function name
__STATIC_INLINE uint32_t LL_DAC_IsDMAReqEnabled
(DAC_TypeDef * DACx, uint32_t DAC_Channel)
Function description
Get DAC DMA transfer request state of the selected channel.
Parameters
DACx: DAC instance
DAC_Channel: This parameter can be one of the following
values:
LL_DAC_CHANNEL_1
LL_DAC_CHANNEL_2
Return values
State: of bit (1 or 0).
Reference Manual to
LL API cross
reference:
CR DMAEN1 LL_DAC_IsDMAReqEnabled
CR DMAEN2 LL_DAC_IsDMAReqEnabled
LL_DAC_DMA_GetRegAddr
Function name
__STATIC_INLINE uint32_t LL_DAC_DMA_GetRegAddr
(DAC_TypeDef * DACx, uint32_t DAC_Channel, uint32_t Register)
Function
description
Function to help to configure DMA transfer to DAC: retrieve the DAC
register address from DAC instance and a list of DAC registers
intended to be used (most commonly) with DMA transfer.
Parameters
DACx: DAC instance
DAC_Channel: This parameter can be one of the following
values:
LL_DAC_CHANNEL_1
LL_DAC_CHANNEL_2
Register: This parameter can be one of the following values:
LL_DAC_DMA_REG_DATA_12BITS_RIGHT_ALIGNED
LL_DAC_DMA_REG_DATA_12BITS_LEFT_ALIGNED
LL_DAC_DMA_REG_DATA_8BITS_RIGHT_ALIGNED
Return values
DAC: register address
Notes
These DAC registers are data holding registers: when DAC
conversion is requested, DAC generates a DMA transfer request
to have data available in DAC data holding registers.
This macro is intended to be used with LL DMA driver, refer to
function "LL_DMA_ConfigAddresses()". Example:
LL_DMA_ConfigAddresses(DMA1, LL_DMA_CHANNEL_1,
(uint32_t)&< array or variable >,
LL_DAC_DMA_GetRegAddr(DAC1, LL_DAC_CHANNEL_1,
LL_DAC_DMA_REG_DATA_12BITS_RIGHT_ALIGNED),
LL_DMA_DIRECTION_MEMORY_TO_PERIPH);
Reference
Manual to LL API
cross reference:
DHR12R1 DACC1DHR LL_DAC_DMA_GetRegAddr
DHR12L1 DACC1DHR LL_DAC_DMA_GetRegAddr
DHR8R1 DACC1DHR LL_DAC_DMA_GetRegAddr
DHR12R2 DACC2DHR LL_DAC_DMA_GetRegAddr
DHR12L2 DACC2DHR LL_DAC_DMA_GetRegAddr
DHR8R2 DACC2DHR LL_DAC_DMA_GetRegAddr

ST STM32F2 Specifications

General

Brand	ST
Model	STM32F2
Category	Microcontrollers
Language	English