SPIMSP432DMA_HWAttrsV1 Struct Reference

SPIMSP432DMA Hardware attributes These fields, with the exception of intPriority, are used by driverlib APIs and therefore must be populated by driverlib macro definitions. For MSP432 driverlib these definitions are found in: More...

#include <SPIMSP432DMA.h>

Data Fields
uint32_t	baseAddr
uint16_t	bitOrder
uint8_t	clockSource
uint8_t	defaultTxBufValue
uint8_t	dmaIntNum
uint32_t	intPriority
uint32_t	rxDMAChannelIndex
uint32_t	txDMAChannelIndex
uint16_t	simoPin
uint16_t	somiPin
uint16_t	clkPin
uint16_t	stePin
uint16_t	pinMode

Detailed Description

SPIMSP432DMA Hardware attributes These fields, with the exception of intPriority, are used by driverlib APIs and therefore must be populated by driverlib macro definitions. For MSP432 driverlib these definitions are found in:

• dma.h
• spi.h

intPriority is the SPI peripheral's interrupt priority, as defined by the underlying OS. It is passed unmodified to the underlying OS's interrupt handler creation code, so you need to refer to the OS documentation for usage. For example, for SYS/BIOS applications, refer to the ti.sysbios.family.arm.m3.Hwi documentation for SYS/BIOS usage of interrupt priorities. If the driver uses the ti.dpl interface instead of making OS calls directly, then the HwiP port handles the interrupt priority in an OS specific way. In the case of the SYS/BIOS port, intPriority is passed unmodified to Hwi_create().

A sample structure is shown below:

const SPIMSP432DMA_HWAttrsV1 spiMSP432DMAHWAttrs[] = {
    {
        .baseAddr = EUSCI_B0_BASE,
        .clockSource = EUSCI_B_SPI_CLOCKSOURCE_SMCLK,
        .bitOrder = EUSCI_B_SPI_MSB_FIRST,

        .defaultTxBufValue = 0,

        .dmaIntNum = INT_DMA_INT1,
        .intPriority = (~0),
        .rxDMAChannelIndex = DMA_CH1_EUSCIB0RX0,
        .txDMAChannelIndex = DMA_CH0_EUSCIB0TX0,
        .clkPin  = SPIMSP432DMA_P1_5_UCB0CLK,
        .simoPin = SPIMSP432DMA_P1_6_UCB0SIMO,
        .somiPin = SPIMSP432DMA_P1_7_UCB0SOMI,
        .stePin  = SPIMSP432DMA_P1_4_UCB0STE,
        .pinMode  = EUSCI_SPI_3PIN


    },
    {
        .baseAddr = EUSCI_B2_BASE,
        .clockSource = EUSCI_B_SPI_CLOCKSOURCE_SMCLK,
        .bitOrder = EUSCI_B_SPI_MSB_FIRST,

        .defaultTxBufValue = 0,

        .dmaIntNum = INT_DMA_INT2,
        .intPriority = (~0),
        .rxDMAChannelIndex = DMA_CH5_EUSCIB2RX0,
        .txDMAChannelIndex = DMA_CH4_EUSCIB2TX0,
        .clkPin  = SPIMSP432DMA_P3_5_UCB2CLK,
        .simoPin = SPIMSP432DMA_P3_6_UCB2SIMO,
        .somiPin = SPIMSP432DMA_P3_7_UCB2SOMI,
        .stePin  = SPIMSP432DMA_P3_4_UCB2STE,
        .pinMode  = EUSCI_SPI_3PIN

    }
};

Field Documentation

uint32_t SPIMSP432DMA_HWAttrsV1::baseAddr

EUSCI_B_SPI Peripheral's base address

uint16_t SPIMSP432DMA_HWAttrsV1::bitOrder

EUSCI_B_SPI Bit order

uint8_t SPIMSP432DMA_HWAttrsV1::clockSource

EUSCI_B_SPI Clock source

uint8_t SPIMSP432DMA_HWAttrsV1::defaultTxBufValue

uint8_t SPIMSP432DMA_HWAttrsV1::dmaIntNum

Default TX value if txBuf == NULL DMA interrupt number

uint32_t SPIMSP432DMA_HWAttrsV1::intPriority

DMA interrupt priority

uint32_t SPIMSP432DMA_HWAttrsV1::rxDMAChannelIndex

DMA rxDMAChannel for Rx data

uint32_t SPIMSP432DMA_HWAttrsV1::txDMAChannelIndex

DMA txDMAChannel for Tx data

uint16_t SPIMSP432DMA_HWAttrsV1::simoPin

Port/pin for SIMO (MOSI)

uint16_t SPIMSP432DMA_HWAttrsV1::somiPin

Port/pin for SOMI (MISO)

uint16_t SPIMSP432DMA_HWAttrsV1::clkPin

Port/pin for SPI CLK

uint16_t SPIMSP432DMA_HWAttrsV1::stePin

Port/pin for STE

uint16_t SPIMSP432DMA_HWAttrsV1::pinMode

3-pin or 4-pin mode

---

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

• SPIMSP432DMA.h