SPIUSCIBDMA_HWAttrs Struct Reference

SPIUSCIBDMA Hardware attributes. More...

#include <SPIUSCIBDMA.h>

Data Fields
uint32_t	baseAddr
uint8_t	clockSource
uint8_t	bitOrder
uint8_t *	scratchBufPtr
uint8_t	defaultTxBufValue
uint32_t	dmaBaseAddr
uint8_t	rxDMAChannelIndex
uint8_t	rxDMASourceTrigger
uint8_t	txDMAChannelIndex
uint8_t	txDMASourceTrigger

Detailed Description

SPIUSCIBDMA Hardware attributes.

These fields are used by driverlib APIs and therefore must be populated by driverlib macro definitions. For MSP430Ware these definitions are found in:

• inc/hw_memmap.h
• usci_b_spi.h
• dma.h

A sample structure is shown below:

uint8_t spiUSCIBDMAscratchBuf;
const SPIUSCIBDMA_HWAttrs spiUSCIBDMAHWAttrs[] = {
    {
        .baseAddr = USCI_B1_BASE,
        .clockSource = USCI_B_SPI_CLOCKSOURCE_SMCLK,
        .bitOrder = USCI_B_SPI_MSB_FIRST,
        .scratchBufPtr = &spiUSCIBDMAscratchBuf,
        .defaultTxBufValue = 0,

        // DMA base address
        .dmaBaseAddr = DMA_BASE,
        // Rx Channel
        .rxDMAChannelIndex = DMA_CHANNEL_1,
        .rxDMASourceTrigger = DMA_TRIGGERSOURCE_22,
        // Tx Channel
        .txDMAChannelIndex = DMA_CHANNEL_0,
        .txDMASourceTrigger = DMA_TRIGGERSOURCE_23
    },
};

Field Documentation

uint32_t SPIUSCIBDMA_HWAttrs::baseAddr

< USCI_B_SPI Peripheral's base address USCI_B_SPI Clock source

uint8_t SPIUSCIBDMA_HWAttrs::clockSource

USCI_B_SPI Bit order

uint8_t SPIUSCIBDMA_HWAttrs::bitOrder

uint8_t* SPIUSCIBDMA_HWAttrs::scratchBufPtr

Address of a scratch buffer of size uint32_t

uint8_t SPIUSCIBDMA_HWAttrs::defaultTxBufValue

Default TX value if txBuf == NULL DMA Peripheral's base address

uint32_t SPIUSCIBDMA_HWAttrs::dmaBaseAddr

DMA rxDMAChannel for Rx data

uint8_t SPIUSCIBDMA_HWAttrs::rxDMAChannelIndex

DMA trigger source for Rx data

uint8_t SPIUSCIBDMA_HWAttrs::rxDMASourceTrigger

DMA txDMAChannel for Tx data

uint8_t SPIUSCIBDMA_HWAttrs::txDMAChannelIndex

DMA trigger source for Tx data

uint8_t SPIUSCIBDMA_HWAttrs::txDMASourceTrigger

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

• SPIUSCIBDMA.h