UARTTiva_HWAttrs Struct Reference

UARTTiva Hardware attributes. More...

#include <UARTTiva.h>

Data Fields
unsigned int	baseAddr
unsigned int	intNum
unsigned int	intPriority
uint32_t	flowControl
unsigned char *	ringBufPtr
size_t	ringBufSize

Detailed Description

UARTTiva Hardware attributes.

The baseAddr, intNum, and flowControl fields are used by driverlib APIs and therefore must be populated by driverlib macro definitions. For TivaWare these definitions are found in:

• inc/hw_memmap.h
• inc/hw_ints.h
• driverlib/uart.h

intPriority is the UART 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:

unsigned char uartTivaRingBuffer[2][32];

const UARTTiva_HWAttrs uartTivaHWAttrs[] = {
    {
        .baseAddr = UART0_BASE,
        .intNum = INT_UART0,
        .intPriority = (~0),
        .flowControl = UART_FLOWCONTROL_NONE,
        .ringBufPtr  = uartTivaRingBuffer[0],
        .ringBufSize = sizeof(uartTivaRingBuffer[0])
    },
    {
        .baseAddr = UART1_BASE,
        .intNum = INT_UART1,
        .intPriority = (~0),
        .flowControl = UART_FLOWCONTROL_NONE,
        .ringBufPtr  = uartTivaRingBuffer[1],
        .ringBufSize = sizeof(uartTivaRingBuffer[1])
    }
};

Field Documentation

unsigned int UARTTiva_HWAttrs::baseAddr

UART Peripheral's base address

unsigned int UARTTiva_HWAttrs::intNum

UART Peripheral's interrupt vector

unsigned int UARTTiva_HWAttrs::intPriority

UART Peripheral's interrupt priority

uint32_t UARTTiva_HWAttrs::flowControl

Hardware flow control setting defined by driverlib

unsigned char* UARTTiva_HWAttrs::ringBufPtr

Pointer to a application ring buffer

size_t UARTTiva_HWAttrs::ringBufSize

Size of ringBufPtr

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

• UARTTiva.h