TM4C123G开发板、芯片手册.pdf

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TM4C123GXL-LaunchPad-00

Important Notice

Revision History

Mailing Address

Table of Contents

TM4C123GXL-LaunchPad-01

Introduction

Chapter Topics

TI Processor Portfolio and Tiva C Series Roadmap

Tiva™ TM4C123G Series Overview

TM4C123GH6PM Specifics

LaunchPad Board

Lab1: Hardware and Software Set Up

Objective

Procedure

Hardware

Download and Install Code Composer Studio (

Install TivaWare™ for C Series (Complete) (

Install LM Flash Programmer (

Download and Install Workshop Lab Files (

Download Workshop Workbook (

Terminal Program (

Windows-side USB Examples (

Download and Install GIMP (

LaunchPad Board Schematic

Helpful Documents and Sites (

Kit Contents (

Initial Board Set-Up (

QuickStart Application

TM4C123GXL-LaunchPad-02

Code Composer Studio

Chapter Topics

Tiva C Series Development Tools

TI Software and Ecosystem

Code Composer Studio Functional Overview

Target Configuration and Emulators

Projects and Workspaces

Creating a New Project and Adding Files

Portable Projects

Path and Build Variables

Build Configurations

Licensing and Pricing

Lab2: Code Composer Studio

Objective

Lab 2 Procedure

Folder Structure for the Labs

Create a New CCS Project

Add Path and Build Variables

Add files to your project

Explore Build Configurations

Build, Load, Run

Perspectives

Terminate the debug session.

VARS.INI – An Easier Way to Add Variables

Using VARS.INI – Conclusion

LM Flash Programmer

Optional: Creating a bin File for the Flash Programmer

TM4C123GXL-LaunchPad-03

TivaWare™, Initialization and GPIO

Chapter Topics

TivaWare

Clocking

GPIO

Lab 3: Initialization and GPIO

Objective

Procedure

Create lab3 Project

Header Files

Main() Function

Clock Setup

SysCtlClockSet(SYSCTL_SYSDIV_5|SYSCTL_USE_PLL|SYSCTL_XTAL_16MHZ|SYSCTL_OSC_MAIN);

GPIO Configuration

The base addresses of the GPIO ports listed in the User Guide are shown below. Note that they are all within the memory map’s peripheral section shown in module 1. APB refers to the Advanced Peripheral Bus, while AHB refers to the Advanced High-Perfor...

While() Loop

Startup Code

Set the Build Options

Compile, Download and Run the Code

Examine the Tiva C Series Pin Masking Feature

TM4C123GXL-LaunchPad-04

Interrupts and the Timers

Chapter Topics

Cortex-M4 NVIC

Cortex-M4 Interrupt Handing and Vectors

General Purpose Timer Module

Lab 4: Interrupts and the Timer

Objective

Procedure

Import Lab4 Project

Header Files

Main() Function

Clock Setup

GPIO Configuration

Timer Configuration

Calculate Delay

ui32Period = (SysCtlClockGet() / 10) / 2; TimerLoadSet(TIMER0_BASE, TIMER_A, ui32Period -1);

Interrupt Enable

Timer Enable

Main Loop

Timer Interrupt Handler

Startup Code

Pre-defined Name

Compile, Download and Run The Code

Exceptions

TM4C123GXL-LaunchPad-05

ADC12

Chapter Topics

ADC12

Sample Sequencers

Lab 5: ADC12

Objective

Procedure

Import lab5 Project

Header Files

Driver Library Error Routine

Main()

Inside the while(1) Loop

Add Pre-defined Symbol

Build and Run the Code

Breakpoint

Hardware averaging

Calling APIs from ROM

Build, Download and Run Your Code

TM4C123GXL-LaunchPad-06

Hibernation Module

Chapter Topics

Low Power Modes

Lab 6: Low Power Modes

Objective

Procedure

Import lab6

Limitations

Header Files

Error Function

Main Function

Clock Setup

GPIO Configuration

Hibernate Configuration

SysCtlPeripheralEnable(SYSCTL_PERIPH_HIBERNATE); HibernateEnableExpClk(SysCtlClockGet()); HibernateGPIORetentionEnable(); SysCtlDelay(64000000); HibernateWakeSet(HIBERNATE_WAKE_PIN); GPIOPinWrite(GPIO_PORTF_BASE,GPIO_PIN_3, 0x00);

Hibernate Request

► Click the Save button to save your work. Your code should look something like the next page:

Build, Download and Run the VDD3ON (no RTC) Code

Measure the Current

Wake Up on RTC

TM4C123GXL-LaunchPad-07

USB

Chapter Topics

USB Basics

TM4C123GH6PM USB

USB Hardware and Library

Lab 7: USB

Objective

Procedure

Example Code

Import The Project

Build, Download and Run The Code

Digging Deeper

Watch the Buffers

TM4C123GXL-LaunchPad-08

Memory

Chapter Topics

Internal Memory

Flash

EEPROM

SRAM

Bit-Banding

Memory Protection Unit

Priority Levels

Lab 8: Memory and the MPU

Objective

Procedure

Import lab8

Writing to Flash

Build, Download and Run the Flash Programming Code

Reading and Writing EEPROM

Build, Download and Run the EEPROM Programming Code

Further EEPROM Information

Bit-Banding

Memory Protection Unit (MPU)

TM4C123GXL-LaunchPad-09

Floating-Point Unit

Chapter Topics

What is Floating-Point and IEEE-754?

Floating-Point Unit

CMSIS DSP Library Performance

Lab 9: FPU

Objective

Procedure

Import lab9

Browse the Code

Build, Download and Run the Code

Profiling the Code

TM4C123GXL-LaunchPad-10

BoosterPacks and grLib

Chapter Topics

LaunchPad Boards and BoosterPacks

KenTec TouchSceen TFT LCD

Graphics Library

Lab 10: Graphics Library

Objective

Procedure

Connect the KenTec Display to your LaunchPad Board

Import Project

Build, Download and Run the Demo

Writing Our Own Code

Modify pic.c

Main.c

Pointer to the Image Array

Driver Library Error Routine

Main()

Displaying the Image

Build and Run the Code

Display Text On-Screen

Build, Load and Test

Drawing Shapes

Build, Load and Test

Widgets

Build, Load and Test

TM4C123GXL-LaunchPad-11

Synchronous Serial Interface

Chapter Topics

Features and Block Diagram

Interrupts and µDMA Operation

Signal Formats

Lab 11: SPI Bus and the Olimex LED BoosterPack

Objective

Procedure

Hardware

Faces Code

Import Lab11

Build and Load

Run and Test

TM4C123GXL-LaunchPad-12

UART

UART Features and Block Diagram

Basic Operation

UART Interrupts and FIFOs

UART “stdio” Functions and Other Features

Lab 12

Objective

Procedure

Import Lab12

Build, Download, and Run the UART Example Code

Using UART Interrupts

TM4C123GXL-LaunchPad-13

µDMA

Chapter Topics

Features and Transfer Types

Block Diagram and Channel Assignment

Channel Configuration

Lab 13: µDMA

Objective

Procedure

Import Lab13

Browse the Code

Build, Download and Run the Code

Streaming Data To and From the UART using a Ping-Pong Buffer

Code Changes

Browse the Code

Build, Load and Run

Z-EK-TM4C123GXL Rev A Schematic

Getting Started with the Tiva™ TM4C123G LaunchPad Workshop Student Guide and Lab Manual Revision 1.04 June 2013 Technical Training Organization

Important Notice Important Notice Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. Customers are responsible for their applications using TI components. In order to minimize risks associated with the customer’s applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI’s publication of information regarding any third party’s products or services does not constitute TI’s approval, warranty or endorsement thereof. Copyright  2013 Texas Instruments Incorporated Revision History May 2013 May 2013 May 2013 May 2013 June 2013 – Revision 1.00 Initial release – Revision 1.01 errata – Revision 1.02 errata – Revision 1.03 errata – Revision 1.04 errata Mailing Address Texas Instruments Training Technical Organization 6550 Chase Oaks Blvd Building 2 Plano, TX 75023 ii Getting Started With the Tiva C Series TM4C123G LaunchPad Workshop

Table of Contents Table of Contents Introduction to the ARM® Cortex™-M4F and Peripherals ……………… Code Composer Studio ……………………………………………………… 1-1 2-1 Hints and Tips …………………………………………………………... 2-34 Introduction to TivaWare™, Initialization and GPIO ……………………. Interrupts and the Timers ………………………………………………….. ADC12 ………………………………………………………………………... Hibernation Module ………………………………………………………… USB …………………………………………………………………………... Memory ………………………………………………………………………. Floating-Point ………………………………………………………………... BoosterPacks and Graphics Library ………………………………………. Synchronous Serial Interface ………………………………………………. UART ………………………………………………………………………… µDMA ………………………………………………………………………... 3-1 4-1 5-1 6-1 7-1 8-1 9-1 10-1 11-1 12-1 13-1 LaunchPad Board Schematics ……………………………………………… Appendix Getting Started With the Tiva C Series TM4C123G LaunchPad Workshop - iii

Table of Contents iv Getting Started With the Tiva C Series TM4C123G LaunchPad Workshop

Introduction Introduction This chapter will introduce you to the basics of the Cortex-M4F and the Tiva™ C Series peripherals. The lab will step you through setting up the hardware and software required for the rest of the workshop. Agenda Introduction to ARM® Cortex™-M4F and Peripherals Code Composer Studio Introduction to TivaWare™, Initialization and GPIO Interrupts and the Timers ADC12 Hibernation Module USB Memory Floating-Point BoosterPacks and grLib Synchronous Serial Interface UART µDMA The Wiki page for this workshop is located here: http://www.ti.com/TM4C123G-Launchpad-Workshop Portfolio ... Getting Started With the Tiva C Series TM4C123G LaunchPad Workshop - Introduction 1 - 1

Chapter Topics Chapter Topics Introduction ................................................................................................................................................1-1 Chapter Topics .........................................................................................................................................1-2 TI Processor Portfolio and Tiva C Series Roadmap ................................................................................1-3 Tiva™ TM4C123G Series Overview........................................................................................................1-4 TM4C123GH6PM Specifics .....................................................................................................................1-5 LaunchPad Board ....................................................................................................................................1-8 Lab1: Hardware and Software Set Up .....................................................................................................1-9 Objective..............................................................................................................................................1-9 Procedure ...........................................................................................................................................1-10 1 - 2 Getting Started With the Tiva C Series TM4C123G LaunchPad Workshop - Introduction

TI Processor Portfolio and Tiva C Series Roadmap TI Processor Portfolio and Tiva C Series Roadmap TI Embedded Processing Portfolio TM4C123G MCU ... Getting Started With the Tiva C Series TM4C123G LaunchPad Workshop - Introduction 1 - 3

Tiva™ TM4C123G Series Overview Tiva™ TM4C123G Series Overview Tiva™ TM4C123G Microcontroller Best-in-class power consumption As low as 370 µA/MHz 500µs wakeup from low-power modes RTC currents as low as 1.7µA Internal and external power control Core and FPU ... M4 Core and Floating-Point Unit  32-bit ARM® Cortex™-M4 core  Thumb2 16/32-bit code: 26% less memory & 25 % faster than pure 32-bit  System clock frequency up to 80 MHz  100 DMIPS @ 80MHz  Flexible clocking system  Internal precision oscillator  External main oscillator with PLL support  Internal low frequency oscillator  Real-time-clock through Hibernation module  Saturated math for signal processing  Atomic bit manipulation. Read-Modify-Write using bit-banding  Single Cycle multiply and hardware divider  Unaligned data access for more efficient memory usage  IEEE754 compliant single-precision floating-point unit  JTW and Serial Wire Debug debugger access  ETM (Embedded Trace Macrocell) available through Keil and IAR emulators Memory ... 1 - 4 Getting Started With the Tiva C Series TM4C123G LaunchPad Workshop - Introduction

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