WatchdogMSP432E4.h File Reference

Detailed Description

Watchdog driver implementation for MSP432E4.

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The Watchdog header file for MSP432E4 should be included in an application as follows:

#include <ti/drivers/Watchdog.h>
#include <ti/drivers/watchdog/WatchdogMSP432E4.h>

Refer to Watchdog.h for a complete description of APIs.

Overview

This Watchdog driver implementation is designed to operate on a MSP432E4 device. Once opened, MSP432E4 Watchdog will count down from the reload value specified in the WatchdogMSP432E4_HWAttrs. If it times out, the Watchdog interrupt flag will be set, and a user-provided callback function will be called. If resets have been enabled in the Watchdog_Params and the Watchdog Timer is allowed to timeout again while the interrupt flag is still pending, a reset signal will be generated. To prevent a reset, Watchdog_clear() must be called to clear the interrupt flag.

Warning

The watchdog peripheral does not support a Non-Maskable Interrupt (NMI).

The reload value from which the Watchdog Timer counts down may be changed during runtime using Watchdog_setReload().

Watchdog_close() is not supported by this driver implementation.

By default the Watchdog driver has resets turned on. However, they may be turned off in the Watchdog_Params which allows the Watchdog Timer to be used like another timer interrupt. This functionality is not supported by all platforms, refer to device specific documentation for details.

To have a user-defined function run at the warning interrupt, first define a void-type function that takes a Watchdog_Handle cast to a uintptr_t as an argument such as the one shown below.

void callback(uintptr_t handle);

...

Watchdog_Handle handle;
Watchdog_Params params;

Watchdog_Params_init(&params);
params.callbackFxn = callback;
handle = Watchdog_open(CONFIG_WATCHDOG0, &params);

#include <stdbool.h>
#include <stdint.h>
#include <ti/drivers/Watchdog.h>

Include dependency graph for WatchdogMSP432E4.h:

Go to the source code of this file.

Data Structures
struct	WatchdogMSP432E4_HWAttrs
	Watchdog hardware attributes for MSP432E4. More...
struct	WatchdogMSP432E4_Object
	Watchdog Object for MSP432E4. More...

Variables
const Watchdog_FxnTable	WatchdogMSP432E4_fxnTable
	Watchdog function table for MSP432E4. More...

Variable Documentation

WatchdogMSP432E4_fxnTable

const Watchdog_FxnTable WatchdogMSP432E4_fxnTable

Watchdog function table for MSP432E4.