Texas Instruments Tiva TM4C123GH6PM User Manual

Watchdog Timer
ROM Location:
ROM_APITABLE is an array of pointers located at 0x0100.0010.
ROM_WATCHDOGTABLE is an array of pointers located at ROM_APITABLE[12].
ROM_WatchdogLock is a function pointer located at ROM_WATCHDOGTABLE[5].
Parameters:
ui32Base is the base address of the watchdog timer module.
Description:
Locks out write access to the watchdog timer configuration registers.
Returns:
None.
25.2.1.7 ROM_WatchdogLockState
Gets the state of the watchdog timer lock mechanism.
Prototype:
bool
ROM_WatchdogLockState(uint32_t ui32Base)
ROM Location:
ROM_APITABLE is an array of pointers located at 0x0100.0010.
ROM_WATCHDOGTABLE is an array of pointers located at ROM_APITABLE[12].
ROM_WatchdogLockState is a function pointer located at ROM_WATCHDOGTABLE[7].
Parameters:
ui32Base is the base address of the watchdog timer module.
Description:
Returns the lock state of the watchdog timer registers.
Returns:
Returns true if the watchdog timer registers are locked, and false if they are not locked.
25.2.1.8 ROM_WatchdogReloadGet
Gets the watchdog timer reload value.
Prototype:
uint32_t
ROM_WatchdogReloadGet(uint32_t ui32Base)
ROM Location:
ROM_APITABLE is an array of pointers located at 0x0100.0010.
ROM_WATCHDOGTABLE is an array of pointers located at ROM_APITABLE[12].
ROM_WatchdogReloadGet is a function pointer located at ROM_WATCHDOGTABLE[9].
Parameters:
ui32Base is the base address of the watchdog timer module.
April 8, 2013 345

Texas Instruments Tiva TM4C123GH6PM Specifications

General

Core	ARM Cortex-M4F
Clock Speed	80 MHz
Flash Memory	256 KB
SRAM	32 KB
GPIO Pins	43
UART	8
I2C	2
SPI/SSI	4
USB	USB 2.0
Timers	6
Communication Interfaces	UART, I2C, SPI, USB
Operating Temperature	-40°C to 85°C
Package	LQFP64

Summary

Boot Loader

Introduction

Explains the ROM-based boot loader and its interfaces for flash updates.

Serial Interfaces

Details the UART, SSI, and I2C interfaces used by the boot loader.

USB Interface

Describes the USB boot loader functionality using the DFU protocol.

Controller Area Network (CAN)

Flash

GPIO

Hibernation Module

Inter-Integrated Circuit (I2C)

Interrupt Controller (NVIC)

Memory Protection Unit (MPU)

Pulse Width Modulator (PWM)

Synchronous Serial Interface (SSI)

System Control

Timer

UART

uDMA Controller

USB Controller

Using USB with the uDMA Controller

Watchdog Timer

Introduction

Functions

Lists and describes API functions for watchdog timer configuration, interrupts, and lock mechanism.