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SPICC26XXDMA Hardware attributes. More...
#include <SPICC26XXDMA.h>
Data Fields | |
| uint32_t | baseAddr |
| uint8_t | intNum |
| uint8_t | intPriority |
| SPI CC26XXDMA Peripheral's interrupt priority. More... | |
| Power_Resource | powerMngrId |
| uint16_t | defaultTxBufValue |
| uint32_t | rxChannelBitMask |
| uint32_t | txChannelBitMask |
| PIN_Id | mosiPin |
| PIN_Id | misoPin |
| PIN_Id | clkPin |
| PIN_Id | csnPin |
SPICC26XXDMA Hardware attributes.
These fields, with the exception of intPriority, are used by driverlib APIs and therefore must be populated by driverlib macro definitions. For CC26xxWare these definitions are found in:
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.drivers.ports 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:
| uint32_t SPICC26XX_HWAttrs::baseAddr |
SPI Peripheral's base address
| uint8_t SPICC26XX_HWAttrs::intNum |
SPI CC26XXDMA Peripheral's interrupt vector
| uint8_t SPICC26XX_HWAttrs::intPriority |
SPI CC26XXDMA Peripheral's interrupt priority.
The CC26xx uses three of the priority bits, meaning ~0 has the same effect as (7 << 5).
(7 << 5) will apply the lowest priority.
(1 << 5) will apply the highest priority.
Setting the priority to 0 is not supported by this driver.
HWI's with priority 0 ignore the HWI dispatcher to support zero-latency interrupts, thus invalidating the critical sections in this driver.
| Power_Resource SPICC26XX_HWAttrs::powerMngrId |
SPI Peripheral's power manager ID
| uint16_t SPICC26XX_HWAttrs::defaultTxBufValue |
Default TX value if txBuf == NULL
| uint32_t SPICC26XX_HWAttrs::rxChannelBitMask |
uDMA controlTable channel index
| uint32_t SPICC26XX_HWAttrs::txChannelBitMask |
uDMA controlTable channel index SPI MOSI pin
| PIN_Id SPICC26XX_HWAttrs::mosiPin |
SPI MISO pin
| PIN_Id SPICC26XX_HWAttrs::misoPin |
SPI CLK pin
| PIN_Id SPICC26XX_HWAttrs::clkPin |
SPI CSN pin
| PIN_Id SPICC26XX_HWAttrs::csnPin |
