PHAL_DMA_Wiring_t Struct Reference

Fixed hardware wiring for one peripheral + direction's DMA use. More...

#include <dma_wiring.h>

Public Attributes
DMA_TypeDef *	periph
uint8_t	channel_idx
PHAL_DMA_Request_t	mux_request
volatile void *	periph_reg
union {
PHAL_DMA_Direction_t   dir
};
PHAL_DMA_Size_t	data_size

Detailed Description

Fixed hardware wiring for one peripheral + direction's DMA use.

Define exactly one of these per peripheral + direction combo as a static/global constant.

• Ex: one for SPI1 RX, one for SPI1 TX Don't construct inline in a PHAL_DMA_Handle_t usage. The fields are a direct representation about how the MCU is internally connected, not a user choice.

Member Data Documentation

[union]

union { ... } PHAL_DMA_Wiring_t

channel_idx

uint8_t PHAL_DMA_Wiring_t::channel_idx

Channel number, 1-8

data_size

PHAL_DMA_Size_t PHAL_DMA_Wiring_t::data_size

Used for both the memory and peripheral side

dir

PHAL_DMA_Direction_t PHAL_DMA_Wiring_t::dir

Ignored for DMA_MODE_MEM2MEM

mux_request

PHAL_DMA_Request_t PHAL_DMA_Wiring_t::mux_request

DMAMUX request ID

periph

DMA_TypeDef* PHAL_DMA_Wiring_t::periph

DMA1 or DMA2

periph_reg

volatile void* PHAL_DMA_Wiring_t::periph_reg

Peripheral data register DMA reads/writes

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The documentation for this struct was generated from the following file:

• firmware/common/phal_G4/dma/dma_wiring.h