EFM32 Gecko Software Documentation
efm32g-doc-5.1.2
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#include <em_dma.h>
Data Fields | |
DMA_DESCRIPTOR_TypeDef * | controlBlock |
uint8_t | hprot |
DMA_DESCRIPTOR_TypeDef* DMA_Init_TypeDef::controlBlock |
Pointer to the controlblock in memory holding descriptors (channel control data structures). This memory must be properly aligned at a 256 bytes. I.e. the 8 least significant bits must be zero.
Please refer to the reference manual, DMA chapter for more details.
It is possible to provide a smaller memory block, only covering those channels actually used, if not all available channels are used. Ie, if only using 4 channels (0-3), both primary and alternate structures, then only 16*2*4 = 128 bytes must be provided. This implementation has however no check if later exceeding such a limit by configuring for instance channel 4, in which case memory overwrite of some other data will occur.
Definition at line 352 of file em_dma.h.
Referenced by DMA_Init().
uint8_t DMA_Init_TypeDef::hprot |
HPROT signal state when accessing the primary/alternate descriptors. Normally set to 0 if protection is not an issue. The following bits are available:
Definition at line 335 of file em_dma.h.
Referenced by DMA_Init().