I2CTiva_HWAttrs Struct Reference

I2CTiva Hardware attributes. More...

#include <I2CTiva.h>

Data Fields
unsigned int	baseAddr
unsigned int	intNum
unsigned int	intPriority

Detailed Description

I2CTiva Hardware attributes.

The baseAddr and intNum 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

intPriority is the I2C 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:

const I2CTiva_HWAttrs i2cTivaHWAttrs[] = {
    {
        .baseAddr = I2C1_BASE,
        .intNum = INT_I2C1,
        .intPriority = (~0)
    },
    {
        .baseAddr = I2C3_BASE,
        .intNum = INT_I2C3,
        .intPriority = (~0)
    },
};

Field Documentation

unsigned int I2CTiva_HWAttrs::baseAddr

I2C Peripheral's base address

unsigned int I2CTiva_HWAttrs::intNum

I2C Peripheral's interrupt vector

unsigned int I2CTiva_HWAttrs::intPriority

I2C Peripheral's interrupt priority

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

• I2CTiva.h