Texas Instruments MSP-EXP430F5438 User manual

MSP-EXP430F5438 Experimenter Board
User's Guide
Literature Number: SLAU263F
January 2009–Revised May 2011

2SLAU263F–January 2009–Revised May 2011
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Contents
Preface ....................................................................................................................................... 7
1 Getting Started ................................................................................................................... 9
1.1 MSP-EXP430F5438 Experimenter Board Introduction ................................................................ 9
1.2 Kit Contents .................................................................................................................. 9
1.3 Tools Requirements ....................................................................................................... 10
1.3.1 Hardware .......................................................................................................... 10
1.3.2 Software ........................................................................................................... 10
2 Hardware Installation ......................................................................................................... 11
2.1 USB Driver Installation .................................................................................................... 11
3 Software Installation and Debugging ................................................................................... 13
3.1 Code Composer Studio Install ........................................................................................... 13
3.2 Working With the Example Software .................................................................................... 13
3.2.1 Example Software for Older Devices .......................................................................... 15
4 Hardware Functional Overview ............................................................................................ 17
4.1 Hardware Overview ....................................................................................................... 17
4.2 User Interfaces ............................................................................................................. 19
4.2.1 Dot-Matrix LCD ................................................................................................... 19
4.2.2 Five-Directional Joystick, Push Buttons, and LEDs .......................................................... 19
4.3 Communication Peripherals .............................................................................................. 19
4.3.1 Wireless Evaluation Module Interface ......................................................................... 19
4.3.2 eZ430-RF2500T Interface ....................................................................................... 20
4.3.3 USB-UART ........................................................................................................ 20
4.4 Two-Axis Accelerometer .................................................................................................. 20
4.5 Analog Signal Chain ...................................................................................................... 20
4.5.1 Audio Input Signal Chain ........................................................................................ 20
4.5.2 Audio Output Signal Chain ...................................................................................... 21
4.6 Headers Port X.Y, P10, and RF3 ........................................................................................ 21
5 Example Software –User Experience ................................................................................... 23
5.1 User Experience ........................................................................................................... 23
5.2 Main Menu .................................................................................................................. 23
5.2.1 Clock ............................................................................................................... 23
5.2.2 UniBall ............................................................................................................. 23
5.2.3 USB-UART ........................................................................................................ 23
5.2.4 Audio Apps ........................................................................................................ 24
5.2.5 Power Test ........................................................................................................ 24
5.2.6 ADC Temp ......................................................................................................... 25
5.3 Main Menu >Settings Menu ............................................................................................. 25
5.3.1 Set Time ........................................................................................................... 25
5.3.2 LCD Contrast ...................................................................................................... 25
5.3.3 LCD Backlight ..................................................................................................... 25
5.3.4 Accelerometer Settings .......................................................................................... 25
6 Frequently Asked Questions, References, and Schematics .................................................... 27
6.1 Frequently Asked Questions ............................................................................................. 27
6.2 References ................................................................................................................. 28
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6.3 Schematics ................................................................................................................. 29
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List of Figures
1-1. MSP-EXP430F5438 Experimenter Board ............................................................................... 9
2-1. Installing the MSP-EXP430F5438 USB Driver ........................................................................ 11
3-1. Selecting a CCS Workspace............................................................................................. 14
3-2. Opening Existing Project ................................................................................................. 14
4-1. Functional Overview ...................................................................................................... 18
4-2. Audio Output Signal Chain............................................................................................... 21
6-1. MSP430F5438A and Peripherals Schematic.......................................................................... 30
6-2. USB to UART Schematic................................................................................................. 31
List of Tables
4-1. MSP-EXP430F5438 Jumper Settings and Functionality............................................................. 17
4-2. Five-Directional Joystick, Push Button, and LED Pin Connections................................................. 19
4-3. Pin Mapping for Header Port x.y ........................................................................................ 21
4-4. Pin Mapping for Header P10............................................................................................. 22
4-5. Pin Mapping for Header RF3 ............................................................................................ 22
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Preface
SLAU263F–January 2009–Revised May 2011
Read This First
Related Documentation From Texas Instruments
MSP-EXP430F5438 Design Files (SLAC228)
MSP-EXP430F5438(A) Example Software (SLAC227)
If You Need Assistance
The primary sources of MSP430 information are the device-specific data sheets and user's guides. The
most up-to-date versions of the user's guide documents can be found at www.ti.com/msp430.
Information specific to the MSP-EXP430F5438 Experimenter Board can be found at
http://focus.ti.com/docs/toolsw/folders/print/msp-exp430f5438.html.
Support for the MSP430 device and the MSP-EXP430F5438 Experimenter Board is provided by the Texas
Instruments Product Information Center (PIC). Contact information for the PIC can be found on the TI web
site at www.ti.com.
FCC Warning
This equipment is intended for use in a laboratory test environment only. It generates, uses, and can
radiate radio frequency energy and has not been tested for compliance with the limits of computing
devices pursuant to subpart J of part 15 of FCC rules, which are designed to provide reasonable
protection against radio frequency interference. Operation of this equipment in other environments may
cause interference with radio communications, in which case the user at his own expense will be required
to take whatever measures may be required to correct this interference.
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Chapter 1
SLAU263F–January 2009–Revised May 2011
Getting Started
1.1 MSP-EXP430F5438 Experimenter Board Introduction
The MSP-EXP430F5438 Experimenter Board is an evaluation board meant to evaluate the capabilities of
the MSP430F5438A family of microcontrollers. Built to complement the MSP430's high degree of
mixed-signal integration, the Experimenter Board showcases external peripherals such as a dot-matrix
LCD, two-axis accelerometer, microphone, audio output, a serial USB connection, and RF add-ons.
Delivered with an example software project to help firmware designers understand how to program the
new peripherals of the MSP430F5xx family of devices, there is no better way to learn how to use the
MSP430F5438A than with the MSP-EXP430F5438 Experimenter Board. This document details the
hardware, its use, and the example software.
Figure 1-1. MSP-EXP430F5438 Experimenter Board
1.2 Kit Contents
•1 x MSP-EXP430F5438 Experimenter Board + AA Batteries
•1 x 100-pin MSP430F5438AIPZ microcontroller [1]
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Tools Requirements www.ti.com
1.3 Tools Requirements
1.3.1 Hardware
An MSP430 Flash Emulation Tool (MSP-FET430UIF) or equivalent programming tool is required to
download code and debug the MSP430F5438A. The JTAG programmer is connected to the
MSP-EXP430F5438 Experimenter Board via the JTAG header located in the top center of the board. The
MSP430F5438A utilizes the standard 4-wire JTAG connection. For more details on the installation and
usage of the Flash Emulation Tool, see the MSP430 Hardware Tools User's Guide (SLAU278). [3]
1.3.2 Software
Texas Instruments' Code Composer Studio (CCS) is an MSP430 integrated development environment
(IDE) designed specifically to develop applications and program MSP430 devices. CCS, CCS Core
Edition, and IAR Embedded Workbench can all be used to evaluate the example software for the
Experimenter Board. The compiler limitation of 4 KB prevents IAR KickStart from being able to be used for
the evaluation of the example software.
The example software, titled "User Experience," is available online as MSP-EXP430F5438(A) Example
Software (SLAC227). The User Experience application must be loaded onto the MSP430F5438A that
comes with the kit and is documented in Chapter 5. When compiled and run using an IDE, the APIs that
have been included in the example software can be used to develop unique applications with the
Experimenter Board. The APIs can serve as interfaces to the internal hardware modules of the
MSP430F5438A (for example, ADC12 or UCS) as well as external peripherals and components (for
example, buttons or an LCD). Chapter 5 describes the steps required to compile and run the example
software using Code Composer Studio.
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Chapter 2
SLAU263F–January 2009–Revised May 2011
Hardware Installation
2.1 USB Driver Installation
A serial communication driver is necessary for USB communication with the MSP-EXP430F5438
Experimenter Board. This driver is provided on the TUSBWINVCP product folder. The driver intended to
be used with a Windows PC running either a 32-bit or 64-bit operating system. To properly install the
driver, follow these steps:
1. Download the driver (SWRC094) from http://focus.ti.com/docs/toolsw/folders/print/tusbwinvcp.html
2. Run setup.exe and complete the "TUSB3410 Single Driver Wrapper –InstallShield Wizard." This
extracts the driver files and installer into the Program Files directory.
3. Navigate to C:\Program Files\Texas Instruments Inc\TUSB3410 Single Driver Installer\DISK1 and run
setup.exe. Complete the "TUSB3410 –Install Shield Wizard" to install the drivers.
4. Plug in the mini-USB cable to the mini-USB port on the MSP-EXP430F5438 board. Plug in the other
end of the cable to a USB port on the host PC.
5. To ensure that the USB driver installation was successful, open Device Manager under Start>Control
Panel>System>Hardware>Device Manager. There should appear a MSP-EXP430F5438 USB –Serial
Port (COMxx) entry under "Ports (COM &LPT)" (the xx in COM identifies the enumeration of the COM
port).
Figure 2-1. Installing the MSP-EXP430F5438 USB Driver
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Chapter 3
SLAU263F–January 2009–Revised May 2011
Software Installation and Debugging
3.1 Code Composer Studio Install
To edit and download code to the MSP430, Code Composer Studio must be installed.
1. Download Code Composer Studio Core Edition from www.ti.com/ccs.
2. If necessary, extract the zip file and run the installation program.
3. Respond to the prompts to install the IDE.
NOTE: IDE Selection
The software example is provided for both Code Composer Studio and IAR Embedded
Workbench, and the user has the option to select the IDE of their choice. However, the
firmware is larger than IAR KickStart's 4-KB limit so a full license of IAR Workbench is
required to compile the application using IAR. A 30-day evaluation version of IAR is also
available from http://supp.iar.com/Download/SW/?item=EW430-EVAL.
This document describes working with Code Composer Studio.
3.2 Working With the Example Software
The MSP-EXP430F5438 example software is written in C and offers APIs to control the MSP430F5438A
chip and external components on the MSP-EXP430F5438 Experimenter Board. New application
development can use this library for guidance.
The example software can be downloaded from the MSP-EXP430F5438 tools page,
MSP-EXP430F5438(A) Example Software (SLAC227). The zip package includes the MSP-EXP430F5438
example software and the USB driver required for communication with the Experimenter Board. The code
is ready for compilation and execution.
To modify, compile, and debug the example code the following steps should be followed:
1. If you have not already done so, download the sample code from the MSP-EXP430F5438 tools page
MSP-EXP430F5438(A) Example Software (SLAC227).
2. Connect the MSP-FET430UIF programmer to the computer. If you have not already done so, install
the drivers for the programmer.
3. Connect one end of the 14-pin cable to JTAG programmer and another end to the JTAG header on the
board.
4. Extract, move, or copy the example project, MSP-EXP430F5438 User Experience CCS, to your
computer.
5. Open CCS and select a workspace directory (see Figure 3-1).
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Figure 3-1. Selecting a CCS Workspace
6. Select Project >Import Existing CCS/CCE Eclipse Project.
7. Browse to the extracted project directory. The project should now show up in the Projects list (see
Figure 3-2).
8. Make sure the project is selected and click Finish.
Figure 3-2. Opening Existing Project
The project is now open. To build, download and debug the code to the device on the MSP-EXP430F5438
Experimenter Board, select Target >Debug Active Project or click the 'bug' button. Note that the silicon
must be properly inserted into the socket prior to selecting Target >Debug Active Project.
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www.ti.com Working With the Example Software
You may be prompted to update the firmware on the MSP-FET430UIF programmer. Do not be concerned;
click the button that says Update, and the program download should continue as expected.
3.2.1 Example Software for Older Devices
The current version of the example software does not support MSP430F5438 non-A devices or
MSP-EXP430F5438 Rev 0-02 boards. For users of these devices, an older version of the example
software is included in a folder called "EXP430F5438 non-A or HW Rev0-02 Legacy Example Software" in
the associated ZIP archive MSP-EXP430F5438(A) Example Software (SLAC227). However, this software
does not feature all of the applications of the current User Experience software and is not being
maintained any longer.
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Chapter 4
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Hardware Functional Overview
4.1 Hardware Overview
The MSP-EXP430F5438 Experimenter Board utilizes the MSP430F5438A peripherals connected to a
number of external components that enable various functions as shown in Figure 4-1. The board provides
a socket into which the MSP430F5438A should be loaded, with pin 1 located in the top left corner of the
socket (look for a small arrow on the socket).
The interfaces to a 138x110 dot-matrix LCD, two-axis analog accelerometer, 5-directional joystick, two
push buttons, and a complete analog signal chain from microphone to audio output jack enable the
development of a variety of applications. The MSP-EXP430F5438 Experimenter Board also provides
UART communication via the mini-USB connection, facilitating communication/data transfer with a PC
host. In addition, wireless communication is also possible via TI wireless evaluation module headers or the
EZ430-RF2500T headers.
Table 4-1. MSP-EXP430F5438 Jumper Settings and Functionality
Header Functionality When Jumper Present Functionality When Jumper Absent
Provides power to MSP430F5438. Also used to
JP1 –430 PWR measure current consumption of the MSP430F5438 is not powered.
MSP430F5438.
Provides power to the entire MSP-EXP430F5438 Experimenter Board is not
MSP-EXP430F5438 board. Also used to powered. The USB circuitry including LED3
JP2 –SYS PWR measure current consumption of the entire would still have power if USB cable is
board. connected.
Provides power to the RF header(s): CC-EM RF headers (CC-EM and EZ430-RF2500T) do
JP3 –RF PWR header or the EZ430-RF2500T header not have power
Pins 1 to 4: Provides I2C connection between No connection between MSP430F5438 and
MSP430F5438 and TUSB EEPROM. TUSB EEPROM.
JP4 –EEPROM Connection No capability of holding the TUSB in RST
Pins 5 to 6: Provides a RST enable to the NOTE: This functionality is not required for user
TUSB3410. applications.
Provides the serial connection to the TUSB3410 No connection between MSP430F5438 and the
JP5 –USB VCP Connection for communication with the PC. Jumpers should computer
be connected horizontally.
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430 PWR
Place to power MSP430F5438
Use also to measure current
Volume
Remove to attenuate audio volume
Board Power Supply Switch
FET:
USB:
BATT:
Power board from FET interface
Power board from USB interface
Power board from batteries
SYS PWR
Place to connect V to one
of the power sources (FET,
USB, BATT). Use also to
measure total board current
consumption
CC
JP5 – 5438 to TUSB3410
Pins 1-2:
Pins 3-4:
UCA1TXD/SIN
UCA1RXD/SOUT
serial communication
RF PWR
Place to power the RF
connector headers
JP4 – 5438 to EEPROM
Pins 1-4:
Pins 5-6:
EEPROM communication;
not necessary for user applications
RST enable for USB chip
JTAG
FET Tool Connector to
program / debug the MSP430F5438
EZRF Target Header
SPI interface to the
eZ430-RF2500T
CC-EM Headers
SPI interface to
CC-EM modules
EZRF Target Header
UART interface to
the eZ430-RF2500T
Hardware Overview www.ti.com
Figure 4-1. Functional Overview
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www.ti.com User Interfaces
4.2 User Interfaces
4.2.1 Dot-Matrix LCD
The HD66753 is a Hitachi dot-matrix LCD with a resolution of 138 x 110, 4-level grayscale pixels. The
LCD also has a built-in backlight driver that can be controlled by a PWM signal from the MSP430F5438A,
pin P8.3. The MSP430F5438A communicates with the HD66753 via an SPI-like communication protocol.
To supplement the limited set of instructions and functionalities provided by the on-chip LCD driver, an
LCD driver has been developed for the MSP430F5438A to support additional functionalities such as font
set and graphical utilities. More information on the LCD can be obtained from the manufacturer's data
sheet.
4.2.2 Five-Directional Joystick, Push Buttons, and LEDs
The following table describes the pin connections for the 5-directional joystick switch, the push button
switches, and the on-board LEDs.
The USB circuit on the board also sources an LED3, which indicates the presence of USB power from the
mini-USB cable.
Table 4-2. Five-Directional Joystick, Push Button, and
LED Pin Connections
Peripheral Pin Connection
5-directional joystick (LEFT) P2.1
5-directional joystick (RIGHT) P2.2
5-directional joystick (CENTER) P2.3
5-directional joystick (UP) P2.4
Switch 1 (S1) P2.6
Switch 2 (S2) P2.7
RESET Switch (S3) RST / NMI
LED1 P1.0
LED2 P1.1 / TA0 CCR0
4.3 Communication Peripherals
4.3.1 Wireless Evaluation Module Interface
Included in the communication peripherals are the headers that support the CC-EM boards from TI. The
transceiver modules connect to the USCI of the MSP430F5438A configured in SPI mode using the UCB0
peripheral. Libraries that interface the MSP430 to these transceivers are available at www.ti.com/msp430
under Code Examples. The RF PWR jumper must be populated to provide power to the EM
daughterboard. The following radio daughter cards are compatible with the MSP-EXP430F5438
Experimenter Board:
•CC1100EMK/CC1101EMK –Sub-1-GHz radio
•CC2500EMK –2.4 GHz radio
•CC2420EMK/CC2430EMK –2.4 GHz 802.15.4 [SoC] radio
•CC2520EMK/CC2530EMK –2.4 GHz 802.15.4 [SoC] radio
•CC2520 + CC2591 EM (if R4 and R8 0-Ωresistors are connected)
NOTE: Future evaluation boards may also be compatible with the header connections.
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Two-Axis Accelerometer www.ti.com
4.3.2 eZ430-RF2500T Interface
The eZ430-RF2500T module can be attached to the MSP-EXP430F5438 Experimenter Board in one of
two ways –through an 18-pin connector (RF3) or a 6-pin connector (RF4). The pins on the
eZ430-RF2500T headers are multiplexed with the pins on the CC-EM headers allowing the
EZ430-RF2500T module to behave identically to a CC-EM daughterboard. Power must be provided to the
EZ430-RF2500T module by setting the jumper RF PWR. The eZ430-RF2500T connection should always
be made with the antenna facing off of the board. For more information on the connections to the required
eZ430-RF2500T, see the eZ430-RF2500 Development Tool User's Guide (SLAU227), available through
www.ti.com/ez430.
4.3.3 USB-UART
The USB interface on the MSP-EXP430F5438 Experimenter Board allows for UART communication with a
PC host and also converts the USB power to 3.3-V power source for the entire board. The USCI module
in the MSP430F5438A (UCA1) supports the UART protocol that is used to communicate with the TI TUSB
chip for data transfer to the PC.
4.4 Two-Axis Accelerometer
The MSP-EXP430F5438 Experimenter Board supports a two-axis accelerometer, ADXL322. Two analog
signals, one for each axis X and Y, are connected to input channels one and two of the MSP430F5438A
ADC12 module, respectively. The layout also supports the three-axis accelerometer, the ADXL330, by
tracing the connection of a Z-axis to input channel three of the ADC12. To use the ADXL330, the user
would need to remove the ADXL322 and correctly replace the part with the ADXL330. No further
modifications to the board are required. The accelerometer is powered through pin P6.0. This interface,
especially in conjunction with other on-board interfaces such as the LCD, enables several potential
applications such as g-force measurement or tilt sensing. For more information on the accelerometer chip,
see the manufacturer’s data sheet. [6]
4.5 Analog Signal Chain
The MSP-EXP430F5438 Experimenter Board provides a complete analog signal chain enabling numerous
audio applications such as speech recording, playback, or real-time audio signal analysis.
4.5.1 Audio Input Signal Chain
The MSP-EXP430F5438 audio input chain is based on a noninverting op-amp gain stage positioned
between the microphone and the MSP430F5438A ADC12. The circuit utilizes a Texas Instruments
TLV2760, optimized for low-power operation. The power for the TLV2760 is supplied directly from
MSP430F5438A port pin P6.4, which can be turned off to remove power consumption when the TLV2760
is not in use. The op-amp has a cutoff frequency of approximately 4 kHz, which targets typical speech
frequency range. See the MSP-EXP430F5438 schematic (Section 6.3) for the op-amp circuit.
The microphone is connected to the MSP430F5438A ADC12 input channel five via an analog filter circuit.
The microphone is enabled or disabled via the same MSP430F5438A port pin as the TLV2760, P6.4.
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