Function to help to configure DMA transfer from ADC: retrieve the ADC register address from ADC instance and a list of ADC registers intended to be used (most commonly) with DMA transfer.
- Note:
- These ADC registers are data registers: when ADC conversion data is available in ADC data registers, ADC generates a DMA transfer request.
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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, LL_ADC_DMA_GetRegAddr(ADC1, LL_ADC_DMA_REG_REGULAR_DATA), (uint32_t)&< array or variable >, LL_DMA_DIRECTION_PERIPH_TO_MEMORY);
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For devices with several ADC: in multimode, some devices use a different data register outside of ADC instance scope (common data register). This macro manages this register difference, only ADC instance has to be set as parameter.
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On STM32F1, only ADC instances ADC1 and ADC3 have DMA transfer capability, not ADC2 (ADC2 and ADC3 instances not available on all devices).
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On STM32F1, multimode can be used only with ADC1 and ADC2, not ADC3. Therefore, the corresponding parameter of data transfer for multimode can be used only with ADC1 and ADC2. (ADC2 and ADC3 instances not available on all devices).
- Reference Manual to LL API cross reference:
- DR DATA LL_ADC_DMA_GetRegAddr
- Parameters:
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| ADCx | ADC instance |
| Register | This parameter can be one of the following values:
(1) Available on devices with several ADC instances. |
- Return values:
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Definition at line 1601 of file stm32f1xx_ll_adc.h.
References LL_ADC_DMA_REG_REGULAR_DATA.
