CANMSP432E4_HWAttrs Struct Reference

CANMSP432E4 Hardware attributes. More...

#include <CANMSP432E4.h>

Collaboration diagram for CANMSP432E4_HWAttrs:

Data Fields
uint32_t	baseAddr
uint32_t	intNum
uint32_t	intPriority
uint32_t	rxPin
uint32_t	txPin
uint32_t	baudRate
CANMSP432E4_ErrorCallback	errorFxn

Detailed Description

CANMSP432E4 Hardware attributes.

The baseAddr, intNum, and flowControl fields are used by driverlib APIs and therefore must be populated by driverlib macro definitions. For MSP432E4 driverlib these definitions are found in:

• ti/devices/msp432e4/driverlib/inc/msp432e4xxx.h
• ti/devices/msp432e4/driverlib/interrupt.h
• ti/devices/msp432e4/driverlib/can.h

intPriority is the CAN 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:

struct can_frame canMSP432E4TxBuffer[2][4];
struct can_frame canMSP432E4RxBuffer[2][4];

const CANMSP432E4_HWAttrs canMSP432E4HWAttrs[] = {
    {
        .baseAddr = CAN0_BASE,
        .intNum = INT_CAN0,
        .intPriority = (~0),
        .rxPin = CANMSP432E4_PA0_U0RX,
        .txPin = CANMSP432E4_PA1_U0TX,
        .baudRate = 125000;
        .errorFxn = NULL
    },
    {
        .baseAddr = CAN1_BASE,
        .intNum = INT_CAN1,
        .intPriority = (~0),
        .rxPin = CANMSP432E4_PB0_U1RX,
        .txPin = CANMSP432E4_PB1_U1TX,
        .baudRate = 125000;
        .errorFxn = NULL,
    }
};

Field Documentation

baseAddr

uint32_t CANMSP432E4_HWAttrs::baseAddr

CAN Peripheral's base address

intNum

uint32_t CANMSP432E4_HWAttrs::intNum

CAN Peripheral's interrupt vector

intPriority

uint32_t CANMSP432E4_HWAttrs::intPriority

CAN Peripheral's interrupt priority

rxPin

uint32_t CANMSP432E4_HWAttrs::rxPin

CAN RX pin assignment

txPin

uint32_t CANMSP432E4_HWAttrs::txPin

CAN TX pin assignment

baudRate

uint32_t CANMSP432E4_HWAttrs::baudRate

Baud rate for CAN

errorFxn

CANMSP432E4_ErrorCallback CANMSP432E4_HWAttrs::errorFxn

Application error function to be called on receive errors

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

• CANMSP432E4.h