Texas Instruments Serial Programming Adapter MSP430 Manuale utente

MSP430 Workshop

STUDENT GUIDE

MSP430 Workshop

Revision 3.02a

January 2014

Important Notice

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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

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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,

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.

Revision History

July 2013 – Revision 2.22 (based on MSP430G2553 Value-Line Launchpad)

October 2013 – Revision 3.0 (based on MSP430F5529 USB Launchpad)

November 2013 – Revision 3.01

January 2014 – Revision 3.02

Mailing Address

Texas Instruments

Training Technical Organization

6500 Chase Oaks Blvd Building 2

M/S 8437

Plano, Texas 75023

ii MSP430 Workshop - Introduction

Introduction to MSP430

Introduction

Welcome to the MSP430 Workshop. This workshop covers the fundamental skills needed when

designing a system based on the Texas Instruments (TI) MSP430™ microcontroller (MCU). This

workshop utilizes TI’s integrated development environment (IDE) which is named Code

Composer Studio™ (CCS). It will also introduce you to many of the libraries provided by TI for

rapid development of microcontroller projects, such as MSP430ware™.

Whether you are a fan of the MSP430 for its low-power DNA, appreciate its simple RISC-like

approach to processing, or are just trying to keep your system’s cost to a minimum … we hope

you’ll enjoy working through this material as you learn how to use this nifty little MCU.

MSP430 Workshop - Introduction to MSP430 1 - 1

Administrative Topics

Chapter Topics

Introduction to MSP430..............................................................................................................1-1

Administrative Topics................................................................................................................1-3

Workshop Agenda.....................................................................................................................1-4

TI Products................................................................................................................................1-6

TI’s Entire Portfolio................................................................................................................1-6

Wireless Products.................................................................................................................1-7

TI's Embedded Processors.......................................................................................................1-8

MSP430 Family.......................................................................................................................1-10

MSP430 CPU..........................................................................................................................1-13

MSP430 Memory ....................................................................................................................1-17

Memory Map.......................................................................................................................1-17

RAM ....................................................................................................................................1-18

TLV......................................................................................................................................1-18

FRAM..................................................................................................................................1-19

MSP430 Peripherals...............................................................................................................1-22

GPIO ...................................................................................................................................1-22

Timers .................................................................................................................................1-23

Clocking and Power Management......................................................................................1-24

Analog.................................................................................................................................1-25

Communications (Serial ports, USB, Radio).......................................................................1-26

Hardware Accelerators........................................................................................................1-27

Summary.............................................................................................................................1-28

ULP .........................................................................................................................................1-29

Profile Your Activities..........................................................................................................1-30

Launchpad’s............................................................................................................................1-34

Lab 1 – Out-of-Box User Experience Lab...............................................................................1-35

1 - 2 MSP430 Workshop - Introduction to MSP430

Administrative Topics

A few important details, if you’re taking the class live. If not, we hope you already know where

your own bathroom is located.

MSP430 Workshop - Introduction to MSP430 1 - 3

Workshop Agenda

Here’s the outline of chapters in this workshop.

Chapter 1: “Intro” Provides a quick introduction to TI, TI’s Embedded Processors, as well

as the MSP430 Family of devices.

Chapter 2: “CCS” introduces TI’s development ecosystem. This includes:

−Code Composer Studio (CCSv5)

−Target software, such as MSP430ware and TI-RTOS

−TI’s support infrastructure, including the embedded processors wiki and

Engineer-to-Engineer (e2e) forums.

Chapter 3: “GPIO” This is our introduction to programming with MSP430ware; specifically,

the DriverLib (i.e. driver library) part of MSP430ware. We start out by using it

to program GPIO to blink an LED (often called the “embedded systems version

of ‘Hello World’”). The second part of the lab reads a Launchpad pushbutton.

Chapter 4: “Clocks” This chapter starts at reset – in fact, all three resets found on the

MSP430. We then progress to examining the rich and robust clocking options

provided in the MSP430. This is followed by the power management features

found on many of the ‘430 devices. The chapter finishes up by reviewing the

other required system initialization tasks … such as configuring (or turning off)

the watchdog timer peripheral.

1 - 4 MSP430 Workshop - Introduction to MSP430

Workshop Agenda

Chapter 5: Interrupts … do you use interrupts? Yep, they’re one of the most fundamental

parts of embedded system designs. This is especially true when your

processor is known as the king of low-power. We examine the sources, how to

enable, and what to do in response to … interrupts.

Chapter 6: Timers are often thought of as the lifeblood of a microcontroller program. We

use them to generate periodic events, as one-shot delays, or just to wake

ourselves up every once in a while to read a sensor value. This chapter

focuses on Timer_A – the primary timer module found in the MSP430.

Chapter 7: USB – Universal Serial Bus is an ideal way to communicate with host

computers. This is especially true as most PC’s have done away with

dedicated serial and parallel ports. We attempt to explain how USB works as

well as how to build an application around it. What you’ll find is that the

MSP430 team has done an excellent job of making USB simple.

Chapter 8: Energia is also known by the name “Arduino”. Energia was the name given to

Arduino as it was ported to the TI MCU’s by the open-source community. Look

up the definition of Energia – and let it ‘propel’ your application right off the

Launchpad.

MSP430 Workshop - Introduction to MSP430 1 - 5

TI Products

TI’s Entire Portfolio

It’s very difficult to summarize the entire breadth of TI’s semiconductor products – it’s so far

reaching. But, maybe that’s not to be unexpected from the company who invented the integrated

circuit.

Whether you are looking for embedded processors (the heart of following diagram) or all the

components that sit alongside – such as power management, standard logic, op amps, data

conversion, display drivers, or … so much more – you’ll find them at TI.

Before taking a closer look at embedded processors, we’ll glance at one of the hottest growing

product categories … TI’s extensive portfolio of wireless connectivity.

1 - 6 MSP430 Workshop - Introduction to MSP430

TI Products

Wireless Products

Wireless devices let us talk through the air. Look ma, no wires.

What protocol or frequency resonates with you and your end-customers? Whether it’s: near-field

communications (NFC); radio-frequency ID (RFID); the long range, low-power sub 1-GHz;

ZigBee®; 6LoPan; Bluetooth® or Bluetooth Low Energy® (BLE); ANT®; or just good old Wi-Fi –

TI’s got you covered.

Many low-end, low-cost MCU designers have longed for a way to connect wirelessly to the rest of

the world. TI’s wireless devices and modules make this possible. No longer do you need a

gigahertz processor to run the various networking stacks required to talk to the outside world –

the TI SimpleLink line handles this for you … meaning that any processor that can communicate

via a serial port can be networked. Drop a CC3000 module into your design and you’ve enabled it

to join the Internet of Things revolution.

Check out TI’s inexpensive, low-power and innovative wireless lineup!

MSP430 Workshop - Introduction to MSP430 1 - 7

TI's Embedded Processors

Whether you are looking for the MSP430, which is the lowest power microcontroller (MCU) in the

world today … or the some of the highest performance single-chip microprocessors (MPU) ever

designed (check out Multicore) … or something in between … TI has your needs covered.

To start with, look at the Blue/Red row about ⅓the way down the slide. The columns with Red

signify devices utilizing ARM processor cores. If you didn’t think TI embraces the ARM lineup of

processors, think again. TI is one of the leaders in ARM development, manufacturing and sales.

Jumping to the 3rd column, the Tiva C (Tiva Connected) processors are probably the best all-

around MCU’s in use today. The 32-bit floating point ARM Cortex-M4F core can be connected to

the real-world by a dizzying array of peripherals. They provide a near-perfect balance of

performance, power, and connectivity.

On the other hand, if you’re building safety critical applications, the Hercules family of processors

is what you should key in on. Whether your customers appreciate the safety of dual-core,

lockstep processing or the SIL3 certification, these processors are a unique mix of ARM Cortex-

R4 performance combined with TI’s vast SafeTI®knowledge.

Moving up to what ARM calls their ‘Application’ series of processors, TI set the processing world

on fire (figuratively) when they introduced the Sitara AM335x. That you could get a $5 processor

which runs Linux, Android or other high-level operating systems was jaw-dropping. We probably

didn’t make some PC manufactures happy – we’ve seen many of our customers replace bulky,

power-hungry embedded PC’s with small, low-power BeagleBoard-like replacements. This device

was the inflection point – it’s started a new direction for embedding high-level host systems.

1 - 8 MSP430 Workshop - Introduction to MSP430

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