Texas Instruments Tiva TM4C123GH6PM User Manual

UART
22.2.1.34 ROM_UARTSpaceAvail
Determines if there is any space in the transmit FIFO.
Prototype:
bool
ROM_UARTSpaceAvail(uint32_t ui32Base)
ROM Location:
ROM_APITABLE is an array of pointers located at 0x0100.0010.
ROM_UARTTABLE is an array of pointers located at ROM_APITABLE[1].
ROM_UARTSpaceAvail is a function pointer located at ROM_UARTTABLE[12].
Parameters:
ui32Base is the base address of the UART port.
Description:
This function returns a flag indicating whether or not there is space available in the transmit
FIFO.
Returns:
Returns true if there is space available in the transmit FIFO or false if there is no space
available in the transmit FIFO.
22.2.1.35 ROM_UARTTxIntModeGet
Returns the current operating mode for the UART transmit interrupt.
Prototype:
uint32_t
ROM_UARTTxIntModeGet(uint32_t ui32Base)
ROM Location:
ROM_APITABLE is an array of pointers located at 0x0100.0010.
ROM_UARTTABLE is an array of pointers located at ROM_APITABLE[1].
ROM_UARTTxIntModeGet is a function pointer located at ROM_UARTTABLE[28].
Parameters:
ui32Base is the base address of the UART port.
Description:
This function returns the current operating mode for the UART transmit interrupt. The return
value is UART_TXINT_MODE_EOT if the transmit interrupt is currently set to be asserted
once the transmitter is completely idle - the transmit FIFO is empty and all bits, including any
stop bits, have cleared the transmitter. The return value is UART_TXINT_MODE_FIFO if the
interrupt is set to be asserted based upon the level of the transmit FIFO.
Returns:
Returns UART_TXINT_MODE_FIFO or UART_TXINT_MODE_EOT.
268 April 8, 2013

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.