Datenblatt für FRDM-34931(S)-EVB User Guide von NXP USA Inc.

:" fre escale"
Freescale Semiconductor, Inc.
User’s Guide
© Freescale Semiconductor, Inc., 2015. All rights reserved.
Document Number: KTFRDM34931UG
Rev. 2.0, 9/2015
FRDM-34931S-EVB / FRDM-34931-EVB
Evaluation Board
Figure 1. FRDM-34931S-EVB / FRDM-34931-EVB
KTFRDM34931UG Rev. 2.0
2Freescale Semiconductor, Inc.
Table of Contents
1 Important Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Getting Started. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Getting to Know the Hardware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 FRDM-KL25Z Freedom Development Platform. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5 Setting up the Hardware and the Graphical User Interface (GUI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6 Installing Processor Expert Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
7 Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
8 Board Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
9 Board Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
10 Accessory Item Bill of Materials. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
11 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
12 Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Important Notice
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1 Important Notice
Freescale provides the enclosed product(s) under the following conditions:
This evaluation kit is intended for use of ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY.
It is provided as a sample IC pre-soldered to a printed circuit board to make it easier to access inputs, outputs, and
supply terminals. This evaluation board may be used with any development system or other source of I/O signals
by simply connecting it to the host MCU or computer board via off-the-shelf cables. This evaluation board is not a
Reference Design and is not intended to represent a final design recommendation for any particular application.
Final device in an application will be heavily dependent on proper printed circuit board layout and heat sinking
design as well as attention to supply filtering, transient suppression, and I/O signal quality.
The goods provided may not be complete in terms of required design, marketing, and or manufacturing related
protective considerations, including product safety measures typically found in the end product incorporating the
goods. Due to the open construction of the product, it is the user's responsibility to take any and all appropriate
precautions with regard to electrostatic discharge. In order to minimize risks associated with the customers
applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or
procedural hazards. For any safety concerns, contact Freescale sales and technical support services.
Should this evaluation kit not meet the specifications indicated in the kit, it may be returned within 30 days from the
date of delivery and will be replaced by a new kit.
Freescale reserves the right to make changes without further notice to any products herein. Freescale makes no
warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does
Freescale assume any liability arising out of the application or use of any product or circuit, and specifically
disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters
can and do vary in different applications and actual performance may vary over time. All operating parameters,
including “Typical”, must be validated for each customer application by customer’s technical experts.
Freescale does not convey any license under its patent rights nor the rights of others. Freescale products are not
designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or
other applications intended to support or sustain life, or for any other application in which the failure of the Freescale
product could create a situation where personal injury or death may occur.
Should the Buyer purchase or use Freescale products for any such unintended or unauthorized application, the
Buyer shall indemnify and hold Freescale and its officers, employees, subsidiaries, affiliates, and distributors
harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or
indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such
claim alleges Freescale was negligent regarding the design or manufacture of the part.Freescale™ and the
Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property
of their respective owners. © Freescale Semiconductor, Inc. 2015
n Jump Start Your Deslgn
Getting Started
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2 Getting Started
2.1 Kit Contents/Packing List
The FRDM-34931S-EVB / FRDM-34931-EVB contents include:
• Assembled and tested evaluation board/module in anti-static bag
• Warranty card
2.2 Jump Start
Freescale’s analog product development boards help to easily evaluate Freescale products. These tools support analog mixed signal and
power solutions including monolithic ICs using proven high-volume SMARTMOS mixed signal technology, and system-in-package devices
utilizing power, SMARTMOS and MCU dies. Freescale products enable longer battery life, smaller form factor, component count reduction,
ease of design, lower system cost and improved performance in powering state of the art systems.
• For FRDM-34931-EVB, go to www.freescale.com/FRDM-34931-EVB
•For FRDM-34931S-EVB, go to www.freescale.com/FRDM-34931S-EVB
•Review your Tool Summary Page
• Look for
• Download documents, software and other information
Once the files are downloaded, review the user guide in the bundle. The user guide includes setup instructions, BOM and schematics.
Jump start bundles are available on each tool summary page with the most relevant and current information. The information includes
everything needed for design.
2.3 Required Equipment and Software
To use this kit, you need:
• DC Power supply: 5.0 V to 40 V with up to 10 A current handling capability, depending on motor requirements.
• USB Standard A (male) to mini-B (male) cable
• Typical loads (brushed DC motor, power resistors or inductive load with up to 5.0 A and 36 V operation)
• Function generator (optional)
• FRDM-KL25Z Freedom Development Platform (optional)
• ARM®mbed™ firmware loaded on FRDM-KL25Z board (To compile the code, you need to have an account in www.mbed.org.)
• MC34931 microcode loaded on FRDM-KL25Z
• Graphical User Interface required for use with FRDM-KL25Z
2.4 System Requirements
The kit requires the following to function properly with the software:
• A USB enabled computer with Windows® XP or later (required only if FRDM-KL25Z is used)
Jump Start Your Design
Getting to Know the Hardware
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3 Getting to Know the Hardware
3.1 Board Overview
The FRDM-34931S-EVB / FRDM-34931-EVB Evaluation Board (EVB) provides a development platform that exercises all the functions of
the MC34931 H-Bridge IC. The EVB is designed for use in conjunction with the FRDM-KL25Z board (not included with the evaluation
board.) In this configuration, the FRDM-KL25Z must be prepped and the hardware configured as described in Section 5. To control the
MCU outputs, use the graphical user interface available on Freescale website "GUI Brushed DC FRDM-34931S-EVB" for
FRDM-34931S-EVB and "GUI Brushed DC FRDM-34931-EVB" for FRDM-34931-EVB. Alternatively, the EVB can be used without the
FRDM-KL25Z, in which case the parallel inputs in the device must be controlled through 3.3/5 V compatible GPIO of the MCU or by
connecting the board to a function generator.
3.2 Board Features
The board allows evaluation of Freescale part MC34931 and all its functions. The board features the following.
• Compatibility with Freescale's all Freedom Development Platform
• Built in reverse battery protection
• Test points to allow signal probing
• Built in voltage regulator to supply logic level circuitry
• LEDs to indicate the supply status and direction of motor
• Transient voltage suppressor to handle system level transients
3.3 Block Diagram
The hardware block diagram is shown in Figure 2
Figure 2. Block Diagram
MC34931
Power Supply
Reverse
Battery and
Transient
Protection
5V Voltage
Regulator
VPWR
LED
VDD LED
Optional 5V Supply to
FRDM
Optional 3.3V Supply to
FRDM
Charge Pump Capacitor
VPWR
CCP
IN1
IN2
EN/D2_b
D2 FB
OUT2
OUT1
SF_B
All Grounds
SF_B Flag
LED
FWD LED
REV LED
To MCU
GPIO
To MCU
ADC input
Load
From
MCU
GPIO
FresWhEe‘ mgn (Forward) prn szR FreerWhesl Low (Forward) "PWR VPWR
Getting to Know the Hardware
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3.4 Device Features
This evaluation board features the following Freescale product:
3.5 Operation Modes
Figure 3. Operation Modes
Table 1. MC3491 Device Features
Device Description Features
MC34931
The 34931 is a monolithic H-Bridge Power IC in a
robust thermally enhanced 32 pin SOIC-EP pack-
age.
• 5.0 V to 36 V continuous operation (transient operation from 5.0 V to
40 V)
• 3.0 V and 5.0 V TTL / CMOS logic compatible inputs
• 235 mΩ maximum RDS(on) at TJ = 150 °C (Each H-Bridge MOSFET)
• Overcurrent limiting (regulation) via internal constant-off-time PWM
• Output short-circuit protection (short to VPWR or GND)
• Temperature-dependent current-limit threshold reduction
• Sleep mode with current draw < 20 μA
|——————-—————————————————————I——————J
Getting to Know the Hardware
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3.6 Architecture
Figure 4. General Architecture Diagram
3.7 Thermal Management
Figure 5. Thermal Management (Thermal Fold-back)
HS2
LS2
OUT1
OUT2
HS1
LS1
PGND
VPWR
CURRENT MIRROR
AND
CONSTANT OFF-TIME
PWM CURRENT REGULATOR
PGND
VSENSE
ILIM PWM
TO GATES
HS1
HS2
LS1
LS2
GATE DRIVE
AND
PROTECTION
LOGIC
AGND
CHARGE
PUMP
VCP
CCP
IN1
IN2
EN/D2
D1
SF
FB
Analog
Control &
Protection
LOGIC SUPPLY VDD
Gate
Control
Logic Output
Drivers
Thermal Management
Time
Amps
8
7
6
5
4
3
2
1
0
6.5 A
PWM Switching
4.2 A
Thermal Fold Back
Thermal Management
•
PWM switching
to 6.5 A at < 165 °C
- Below 165 °C, the device PWMs the
outputs, averaging under 6.5 A to reduce
thermals while continuing operation
•
Thermal fold back
to 4.2 A at 165 °C < T < 185 °C
- Above 165 °C, the device goes into thermal
fold back, averaging under 4.2 A to reduce
thermals while continuing operation
•
Thermal shutdown
at 175 °C < T < 200 °C
- The device shuts down
8. 2:31.. , ‘y< z="">
Getting to Know the Hardware
KTFRDM34931UG Rev. 2.0
8Freescale Semiconductor, Inc.
3.8 Board Description
Figure 6 describes the main blocks of the evaluation board.
Figure 6. Board Description
Table 2. Board Description
Name Description
MC34931 Monolithic H-Bridge Power IC in a robust thermally enhanced 32 pin SOIC-EP package
5.0 V Regulator 5.0 V regulator for VDD and supply.
Jumpers Jumpers for configuring the board for different modes of operation
Reverse Battery Protection Diode Diode for protecting MC34931 in reverse battery condition
Power and Ground inputs Power supply terminal to connect the battery/power supply with the board
Test Points Test points to probe different signals
Output terminal Output connector to connect a load to the MC34931 output
5 V Regulator
Jumpers
Reverse
Battery
Protection
Diode
Power and
Ground
Inputs
Test Points
Test Points
Output
Terminal
MC34931
mz\u~.u , ‘v
Getting to Know the Hardware
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Freescale Semiconductor, Inc. 9
3.9 LED Display
The following LEDs are provided as visual output devices for the evaluation board:
Figure 7. LED Display
Table 3. LED Display
LED ID Description
D3 YELLOW LED, indicates when main/battery supply is connected
D4 GREEN LED, indicates when +5.0 V supply is connected
D5 RED LED, illuminates when the H-Bridge detects a fault
D6 Green LED, indicates current flowing in forward direction
D7 RED LED, indicates current flowing in reverse direction
D6
D7
D5
D3
D4
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Getting to Know the Hardware
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10 Freescale Semiconductor, Inc.
3.10 Jumper Definitions
Figure 8 shows the jumper locations on the board.
Figure 8. Board Jumpers
The following table defines the evaluation board jumper positions and explains their functions. (The default settings are shown in blue.)
.
Table 4. Jumper Definitions
Jumper Description Setting Connection
JP1 5.0 V Regulator output 1-2 5.0 V regulator connected / External or USB 5.0 V
JP2 VDD Select
1-2 3.3 V as VDD
2-3 5.0 V as VDD
JP3 FB 1-2 Feedback to MCU ADC / NC
JP4 D1
1-2 MCU GPIO
2-3 GND
JP5 EN/D2_B
1-2 MCU GPIO
2-3 VDD
JP6 IN1 1-2 MCU GPIO / EXT Signal to IN1
JP7 IN2 1-2 MCU GPIO / EXT Signal to IN2
JP1 JP4
JP2 JP5
JP3 JP6 JP7
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3.11 Input Signal Definition
The board has the following input signals which are used to control the outputs or functions inside the circuit.
3.12 Output Signal Definition
The board has the following output signals which are used to drive a load such as a brushed DC motor. It provides an analog output for
real time load current monitoring. This signal allows closed loop control of the load.
Table 5. Input Signals
Input Name Description
D1 Disable signal to tri-state the outputs (Active High)
EN/D2_b Disable signal to tri-state the output and put the part in sleep mode (Active Low)
IN1 Logic input to control OUT1
IN2 Logic input to control OUT2
Table 6. Output Signals
Output Name Description
OUT1 Output 1 of H-Bridge controlled by the logic input IN1
OUT2 Output 2 of H-Bridge controlled by the logic input IN2
SF_B Open drain Active Low status flag output to indicate fault
FB Current mirror output for real time load current monitoring
. ”5°qu LEE r L i .3 54 J5 . so 1. l
Getting to Know the Hardware
KTFRDM34931UG Rev. 2.0
12 Freescale Semiconductor, Inc.
3.13 Test Point Definition
Figure 9 shows the location of the test points on the board.
Figure 9. Test Points
The following test points provide access to various signals to and from the board.
Table 7. Test Points
Test Point Name Signal Name Description
TP_D1 D1 Disable signal to tri-state the outputs (Active High)
EN/D2_B EN/D2_b Disable signal to tri-state the output and put the part in sleep mode (Active Low)
FB FB Current mirror output for real time load current monitoring
IN1 IN1 Logic input to control OUT1
IN2 IN2 Logic input to control OUT2
SF_B SF_b Open drain Active Low status flag output to indicate fault
GND1 GND Common Ground
GND2 GND Common Ground
VPWR VBAT Battery or power supply input voltage
5V 5V 5.0 V signal from regulator
GND2
SF_B
VPWR
3V 5V
VDD
GND1
IN2
IN1
EN/D2_B
FB
TP_D1
Getting to Know the Hardware
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3.14 Screw Terminal Connections
The board has following screw terminal connections to connect the power supply and the load. Figure 10 shows the location of the screw
terminal connectors.
Figure 10. Screw Terminal Connectors
3V 3V3 3.3 V supply from the FRDM board
VDD VDD VDD supply for the FS_B pull-up resistor
Table 8. Screw Terminal Connections
Screw Terminal Name Description
J5 Power supply connector for MC34931
J6 Output connector for connecting to a load
Table 7. Test Points (continued)
Test Point Name Signal Name Description
J5
J6
3 HJLLELNLL
FRDM-KL25Z Freedom Development Platform
KTFRDM34931UG Rev. 2.0
14 Freescale Semiconductor, Inc.
4 FRDM-KL25Z Freedom Development Platform
The Freescale Freedom development platform is a set of software and hardware tools facilitating rapid prototyping of designs based on
the Kinetis family of microcontrollers. The Freescale Freedom KL25Z board serves as the basic hardware component of the development
platform. The FRDM-KL25Z implements a Kinetis L Series microcontroller and makes use of the device’s built-in USB, LED, and I/O port
features. The board can be loaded with application specific firmware and can be configured with Graphical User Interface software that
supports development and testing.
The Freescale FRDM-34931S-EVB / FRDM-34931-EVB may be mounted to the FRDM-KL25Z as a shield board. When used in
conjunction with the FRDM-34931S-EVB /FRDM-34931-EVB, the FRDM-KL25Z provides basic functions, such as PC communication,
that support the application-specific features of the evaluation board.
For use with the FRDM-34931S-EVB / FRDM34931-EVB, the FRDM-KL25Z must have ARM®mbed™ firmware installed (see
Section 5.2.2), MC34931 microcode installed (see Section 5.2.3), and must use the Freescale “GUI Brushed DC FRDM-34931S-EVB” or
“GUI Brushed DC FRDM-34931-EVB” as the software interface (see Section 5.2.4).
For complete information on the FRDM-KL25Z, access the documentation available on the FRDM-KL25Z Tool Summary page.
Figure 11 illustrates the primary components of the FRDM-KL25Z which apply when the board is used in conjunction with the evaluation
board.
Figure 11. FRDM-KL25Z Board
J10 I/O
Header
J9 I/O
Header
J1 I/O
Header
J2 I/O
Header
KL25Z
USB
Reset OpenSDA
USB
RGB
LED
Pun—z .L‘nvmz Pros—4 mm .mm Ina-w v 9‘; mm PTDI-IZ ”II‘PTAW — PTEfl-II .. ,1 "4'“ "(1-20 Win-Wm {Q my mum ME
FRDM-KL25Z Freedom Development Platform
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Freescale Semiconductor, Inc. 15
4.1 Connecting the FRDM-KL25Z to the Evaluation Board
The FRDM-KL25Z provides an ideal support platform for the FRDM-34931S-EVB/FRDM-34931-EVB kit. In this configuration, the
FRDM-KL25Z connects to a PC and allows the user—via the GUI—to set parameters that control the operation of the motor. The
FRDM-34931S-EVB connects to the FRDM-KL25Z using the four dual row Arduino™ R3 connectors on the bottom of the board. The
connections are as follows:
Figure 12. FRDM-KL25Z to FRDM-34931S-EVB / FRDM-34931-EVB Connections
Table 9. FRDM-34932S-EVB / FRDM-34931-EVB to FRDM-KL25Z Connections
FRDM-34931S-EVB/
FRDM-34931-EVB FRDM-KL25Z Pin Hardware Name
Description
Header Pin Header Pin FRDM-34931S-EVB
FRDM-34931-EVB FRDM-KL25Z
J1 1 J1 1 N/C PTC7 Not Connected
J1 2 J1 2 N/C PTA1 Not Connected
J1 3 J1 3 N/C PTC0 Not Connected
J1 4 J1 4 IO13 (D1) PTA2 Disable signal to tri-state the outputs (Active
High)
J1 5 J1 5 N/C PTC3 Not Connected
J1 6 J1 6 N/C PTD4 Not Connected
J1 7 J1 7 N/C PTC4 Not Connected
700-28782-REV X1
SCH-28782-REV A
FRDM-KL25Z Freedom Development Platform
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16 Freescale Semiconductor, Inc.
J1 8 J1 8 N/C PTA12 Not Connected
J1 9 J1 9 N/C PTC5 Not Connected
J1 10 J1 10 N/C PTA4 Not Connected
J1 11 J1 11 N/C PTC6 Not Connected
J1 12 J1 12 PWM1 (IN1) PTA5 Logic input to control OUT1 using PWM signal
J1 13 J1 13 N/C PTC10 Not Connected
J1 14 J1 14 PWM1 (IN2) PTC8 Logic input to control OUT2 using PWM signal
J1 15 J1 15 N/C PTC11 Not Connected
J1 16 J1 16 N/C PTC9 Not Connected
J2 1 J2 1 N/C PTC12 Not Connected
J2 2 J2 2 N/C PTA13 Not Connected
J2 3 J2 3 N/C PTC13 Not Connected
J2 4 J2 4 N/C PTD5 Not Connected
J2 5 J2 5 N/C PTC16 Not Connected
J2 6 J2 6 N/C PTD0 Not Connected
J2 7 J2 7 N/C PTC17 Not Connected
J2 8 J2 8 N/C PTD2 Not Connected
J2 9 J2 9 N/C PTA16 Not Connected
J2 10 J2 10 N/C PTD3 Not Connected
J2 11 J2 11 N/C PTA17 Not Connected
J2 12 J2 12 N/C PTD1 Not Connected
J2 13 J2 13 N/C PTE31 Not Connected
J2 14 J2 14 N/C GND Not Connected
J2 15 J2 15 N/C N/C Not Connected
J2 16 J2 16 N/C VREFH Not Connected
J2 17 J2 17 N/C PTD6 Not Connected
J2 18 J2 18 IO8 (EN/D2_b) PTE0 Disable signal to tri-state the output and put the
part in Sleep mode (Active Low)
J2 19 J2 19 N/C PTD7 Not Connected
J2 20 J2 20 N/C PTE1 Not Connected
J3 1 J10 1 N/C PTE20 Not Connected
J3 2 J10 2 FB PTB0 Current mirror output for real time load current
monitoring
J3 3 J10 3 N/C PTE21 Not Connected
J3 4 J10 4 N/C PTB1 Not Connected
Table 9. FRDM-34932S-EVB / FRDM-34931-EVB to FRDM-KL25Z Connections (continued)
FRDM-34931S-EVB/
FRDM-34931-EVB FRDM-KL25Z Pin Hardware Name
Description
Header Pin Header Pin FRDM-34931S-EVB
FRDM-34931-EVB FRDM-KL25Z
FRDM-KL25Z Freedom Development Platform
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J3 5 J10 5 N/C PTE22 Not Connected
J3 6 J10 6 N/C PTB2 Not Connected
J3 7 J10 7 N/C PTE23 Not Connected
J3 8 J10 8 SF_B PTB3 Open drain Active Low status flag output to indi-
cate fault
J3 9 J10 9 N/C PTE29 Not Connected
J3 10 J10 10 N/C PTC2 Not Connected
J3 11 J10 11 N/C PTE30 Not Connected
J3 12 J10 12 N/C PTC1 Not Connected
J4 1 J9 1 N/C PTB8 Not Connected
J4 2 J9 2 N/C SDA_PTD5 Not Connected
J4 3 J9 3 N/C PTB9 Not Connected
J4 4 J9 4 N/C P3V3 Not Connected
J4 5 J9 5 N/C PTB10 Not Connected
J4 6 J9 6 N/C RESET/PTA20 Not Connected
J4 7 J9 7 N/C PTB11 Not Connected
J4 8 J9 8 FSD 3V3 OUT P3V3 3.3 V logic output from FRDM-KL25Z board to
FRDM34931S-EVB
J4 9 J9 9 N/C PTE2 Not Connected
J4 10 J9 10 N/C P5V_USB Not Connected
J4 11 J9 11 N/C PTE3 Not Connected
J4 12 J9 12 GND GND Not Connected
J4 13 J9 13 N/C PTE4 Not Connected
J4 14 J9 14 N/C GND Not Connected
J4 15 J9 15 N/C PTE5 Not Connected
J4 16 J9 16 FSD 5V IN P5-9V_VIN 5.0 V logic input to FRDM-KL25Z board from
FRDM-34931S-EVB
Table 9. FRDM-34932S-EVB / FRDM-34931-EVB to FRDM-KL25Z Connections (continued)
FRDM-34931S-EVB/
FRDM-34931-EVB FRDM-KL25Z Pin Hardware Name
Description
Header Pin Header Pin FRDM-34931S-EVB
FRDM-34931-EVB FRDM-KL25Z
Setting up the Hardware and the Graphical User Interface (GUI)
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18 Freescale Semiconductor, Inc.
5 Setting up the Hardware and the Graphical User Interface
(GUI)
The evaluation board is designed to work in conjunction with Freescale’s FRDM-KL25Z board with the PC-based GUI providing direct
access to the MC34931S/MC34931 MCU for testing and analysis. Alternatively, the board may be used as a stand-alone component, in
which case lab hardware, such as a function generator, must be used to support testing and analysis.
The evaluation board consists of an H-Bridge, a parallel interface, power conditioning circuitry, and a set of two Input Select jumpers. All
+5.0 V VDD power required by the board is obtained via the parallel interface.
WARNING
To avoid damaging the board, the following restrictions must be observed:
• The motor supply voltage (VPWR) must be at least 5.0 V, but must not exceed 40 V.
• The peak operating current of the load must not exceed 5.0 A.
5.1 Setting up the FRDM-34931S-EVB/FRDM-34931-EVB as a Stand-alone
Component
This section describes how to configure the FRDM-34931S-EVB / FRDM-34931-EVB for use as a stand-alone component. The procedure
assumes that you are using a four-channel function generator to do testing and analysis. The same connections apply if the board is
connected to a microcontroller instead of a function generator. Consult the board description (Section 3), the schematic (Section 7), and
the MC34931S/MC34931 datasheet to determine how best to configure the board for use in your environment.
1. Connect the function generator to the board. There are two options, depending on whether you want to control the enabling and
disabling of the MC34931S/MC34931 H-bridge outputs (Option 1), or whether you want the H-bridge outputs continuously enabled
(Option 2) while the board is connected to the function generator. Figure 14 illustrates how to set the jumpers and connect to a
function generator (or an MCU) for each of these options.
2. With the power switched off, attach the DC power supply to the VPWR and GND screw connector terminals on the evaluation board
(J5 in Figure 10).
3. Attach one set of coils of the brushed motor to the OUT 1 and OUT 2 screw connector terminals on the evaluation board (J6 in
Figure 10).
Figure 14 illustrates the hardware configuration.
-alone Stand Flgure 13. Hardware Conflguratlon
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Figure 13. Hardware Configuration - Stand-alone
Brushed DC Motor
Function Generator (or MCU)
5 - 40 V Power Supply, 10 A
All other
Jumpers
set to
Default
Option 1 - Controlled Enabling of Outputs
Brushed DC Motor Function Generator (or MCU)
5 - 40 V Power Supply, 10 A
JP5 set
to 2 - 3
All other
Jumpers
set to
Default
Option 2 - Continuous Enabling of Outputs
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20 Freescale Semiconductor, Inc.
5.2 Setting up the FRDM-34931S-EVB/FRDM-34931-EVB for Use with the
FRDM-KL25Z
To configure the evaluation board for use with the FRDM KL25Z and the Graphical User Interface (GUI) you must:
• Connect the hardware
• Download the mbed firmware to the FRDM-KL25Z board
• Download the MC34931 microcode to the FRDM-KL25Z board
• Install the Graphical User Interface GUI Brushed DC FRDM-34931S-EVB for FRDM-34931S-EVB or GUI Brushed DC
FRDM-34931-EVB for FRDM-34931-EVB
5.2.1 Connecting the Hardware
The FRDM-34931S-EVB / FRDM-34931-EVB consists of an H-Bridge, a parallel interface, power conditioning circuitry, and a set of two
Input Select jumpers. All +5.0 V VDD power required by the board is obtained via the parallel interface.
WARNING
To avoid damaging the board, the following restrictions must be observed:
• The motor supply voltage (VPWR) must be at least 5.0 V, but must not exceed 40 V.
• The peak operating current of the load must not exceed 5.0 A.
1. Connect the FRDM-34931S-EVB or FRDM-34931-EVB to the FRDM-KL25Z.
2. With the power switched off, attach the DC power supply to the VPWR and GND screw connector terminals on the evaluation board
(J5 in Figure 10).
3. Attach one set of coils of the brushed motor to the OUT 1 and OUT 2 screw connector terminals on the evaluation board (J6 in
Figure 10).
Figure 14 illustrates the hardware configuration.
Figure 14. FRDM-34931S-EVB / FRDM-34931-EVB with FRDM-KL25Z Hardware Configuration
FRDM-KL25Z Board
(sold seperately)
FRDM-34931S-EVB Brushed DC Motor
5 - 40 V Power Supply, 10 A
Workstation
Standard A to Mini-B
USB Cable
USB
OpenSDA
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5.2.2 Downloading mbed® Firmware to the FRDM-KL25Z Board
You must install mbed® firmware on the FRDM-KL25Z board to enable downloading of the MC34931 microcode. The procedure is as
follows:
1. Connect the USB cable between your PC and the OpenSDA USB port on the FRDM-KL25Z board.
2. Download the mbed firmware onto the FRDM-KL25Z board. The instructions are on the ARM®mbed™ website at the following url:
https://developer.mbed.org/handbook/Firmware-FRDM-KL25Z
3. After downloading the mbed firmware, power cycle the board (by disconnecting then reconnecting the USB cable to the OpenSDA
port) to initiate the firmware update. When this process completes, a USB drive named “mbed” should appear on your PC.
5.2.3 Downloading the MC34931 Microcode to the FRDM-KL25Z Board
The MC34931 microcode provides the firmware interface between the MC34931 device, the Freedom platform and the GUI. The
procedure is as follows:
1. Connect the USB cable between your PC and the OpenSDA USB port on the FRDM-KL25Z board.
2. Go to https://developer.mbed.org/teams/Freescale/code/Brushed_DC_Motor_Control_MC34931_MC33931/ and click on the
Import this Program tab.
Figure 15. MC34931/MC33931 mbed Import Screen
n
Go to:
developer.mbed.org/teams/Freescale/code/
Brushed_DC_Motor_Control_MC34931_MC33931/
oClick Import
this program
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22 Freescale Semiconductor, Inc.
3. Log into your mbed account. (If you do not have an mbed account, you must create one.) After logging in, you will be returned to
the screen in Figure 15. Click on Import this program again.
Figure 16. mbed Login Screen
4. The mbed compiler opens with the Import Program window displayed. Click on the Import button.
Figure 17. mbed Compiler Import Program Screen
n
Enter your Username and Password
oClick Login
nClick Import
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Setting up the Hardware and the Graphical User Interface (GUI)
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5. When the import completes, the mbed compiler screen should look like Figure 18. Click on the main.cpp item.
Figure 18. mbed Compiler Select Screen
6. The source code for main.cpp appears in the code editor. Click on the Compile button to compile the main.cpp source code.
Figure 19. mbed Compiler New Program Screen
nClick on main.cpp
nClick on Compile
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Setting up the Hardware and the Graphical User Interface (GUI)
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24 Freescale Semiconductor, Inc.
7. When the compiler completes, an executable file named Brushed_DC_Motor_Control_MC34931_MC33931_KL25Z.bin
downloads to your system download folder. Drag and drop this file to the mbed device which appears as a USB drive on your
system.
Figure 20. Downloading Brushed_DC_Motor_Control_MC34931_MC33931_KL25Z.bin to FRDM-KL25Z
8. Remove the USB connector from the FRDM-KL25Z OpenSDA USB port and insert it in the KL25Z USB port.
The KL25Z board is now ready for use with the FRDM-34931-EVB/FRDM-34931S-EVB and the Motor Control GUI.
5.2.4 Installing the Graphical User Interface
The Graphical User Interface provides a PC-based interface allowing you to easily exercise FRDM-34931S-EVB/ FRDM-34931-EVB
functions to control a DC Brushed Motor. The GUI runs on any Windows 8, Windows 7, Vista, or XP-based operating system.
Two variations of the GUI are available. The GUI Brushed DC FRDM-34931S-EVB GUI (with a maximum PWM frequency of 20 kHz)
supports users with the FRDM-34931S-EVB. The GUI Brushed DC FRDM-34931-EVB (with a maximum PWM frequency of 10 kHz) is
intended for use with the FRDM-34931-EVB.
To install the software:
1. Go to the evaluation board Tool Summary Page
• for FRDM-34931-EVB, go to www.freescale.com/FRDM-34931-EVB
• for FRDM-34931S-EVB, go to www.freescale.com/FRDM-34931S-EVB
2. Under Jump Start Your Design, click on the Get Started with the FRDM-34931x-EVB link.
3. From the list of files that appear, click on the link for the GUI Brushed DC FRDM-34931S-EVB or GUI Brushed DC
FRDM-34931-EVB software.
The software automatically downloads to your PC and initiates the installation process. An Installation Wizard guides you through the rest
of the process.
5.2.5 Using the Graphical User Interface
To start the GUI, do the following:
1. Configure the hardware as described in Section 5.2.1.
2. Click on the Freescale GUI Brushed DC FRDM-34931S-EVB icon to launch the GUI.
nDrag and Drop
USECMMM mun mm: rm FHAELED 9‘ mm wee W' “5|in “firm EN/DLE Usabb Q, ‘ Emu: —> 0 mA .SISBP inhuman-Elma“ PWM Frequency Duty Cycle 75 as
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3. Make sure the GUI recognizes the FRDM-KL25Z. Check the USB connection in the upper left corner of the GUI. The hex Vendor ID
value should display as 0x15A2 and the Part ID value should display as 0x138. If these value do not appear, the GUI has failed to
establish a connection with the FRDM-KL25Z. You may need to disconnect and reconnect the USB cable to the board’s KL25Z
USB port. If the connection still fails, press the reset button on the FRDM-KL25Z board.
4. Click the Enable Target checkbox on the GUI screen. The Target parameter on the GUI screen should change from DISABLED to
ENABLED.
5. Set the DI, EN/D2_B, Direction and Braking as desired (See Section 5.2.6 - Section 5.2.9.) Adjust the PWM Frequency and Duty
Cycle to meet your requirements.
6. Click Run to run the motor. Notice that some options of the GUI are disabled while the motor is running. To make changes, click
Stop, make the desired changes, and then click Run to continue.
7. When finished, de-select the Enable Target button on the GUI, and click Quit. Turn off DC power supply and remove the USB
cable.
The GUI is shown in Figure 21. The hex address numbers at the top are loaded with the vendor ID for Freescale (0x15A2), and the part
ID (0x138). The left side panel displays these numbers only if the PC is communicating with the FRDM-KL25Z via the USB interface.
Figure 21. GUI Screen
Feedback Current
(FB pin out)
Status Fault
(SF_b pin out)
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26 Freescale Semiconductor, Inc.
5.2.6 Forward with High-side Re-circulation
To test the FRDM-34931S-EVB/FRDM-34931-EVB in the forward with high-side re-circulation mode, configure the GUI as follows:
D1: Enable
EN/D2_B: Enable
Direction: Forward
Braking: High-side
Figure 22 shows this configuration with the motor running.
Figure 22. Forward with High-side Recirculation
2TUO1TUO
PGND
VPWR VPW R
PGND
LOAD
Load
Current
Forward
OFF
ON
ON
OFF
2TUO1TUO
PGND
VPWR VPWR
PGND
LOAD
Load
Current
High-Side Recirculation
(Forward)
ON
OFF
ON
OFF
:1an Win “,4 v-g-x erwLw Palm mug .Status PWM Frequency Duty Cycle so» —
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5.2.7 Forward with Low-side Recirculation
To test the FRDM-34931S-EVB/FRDM-34931-EVB in the forward with low-side re-circulation mode, configure the GUI as follows:
D1: Enable
EN/D2_B: Enable
Direction: Forward
Braking: Low-side
Figure 23 shows this configuration with the motor running.
Figure 23. Forward with Low-side Re-circulation
2TUO1TUO
PGND
VPWR VPWR
PGND
LOAD
Load
Current
Low-Side Recirculation
(Forward)
NONO
FFOFFO
2TUO1TUO
PGND
VPWR VPW R
PGND
LOAD
Load
Current
Forward
OFF
ON
ON
OFF
USBW Wm M542 Yum! EMELED '7‘ mo mm mm mm m g M” 268 mA ISM"; WW, Ms.“ Mg. PWMFrequancy 500 Hz FL IL ‘ g j ‘L Duty Cycle 75 % -:E 4.4?
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28 Freescale Semiconductor, Inc.
5.2.8 Reverse with High-side Recirculation
To test the FRDM-34931S-EVB/FRDM-34931-EVB in the reverse with high-side re-circulation mode, configure the GUI as follows:
D1: Enable
EN/D2_B: Enable
Direction: Reverse
Braking: High-side
Figure 24 shows this configuration with the motor running.
Figure 24. Reverse with High-side Re-circulation
2TUO1TUO
PGND
VPWR VPWR
PGND
LOAD
Load
Current
High-Side Recirculation
(Reverse)
ON
OFF
ON
OFF
2TUO1TUO
PGND
OFF
ON
ON
OF
F
VPWR VPWR
PGND
LOAD
Load
Current
Reverse
«1st Wm um me: («up Mm Mrs m W, n 252 mA Isms M g. PWM Frequency Duty Cyde 75 as 5.0,, E
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5.2.9 Reverse with Low-side Recirculation
To test the FRDM-34931S-EVB/FRDM-34931-EVB in the reverse with low-side re-circulation mode, configure the GUI as follows:
D1: Enable
EN/D2_B: Enable
Direction: Reverse
Braking: Low-side
Figure 25 shows this configuration with the motor running.
Figure 25. Reverse with Low-side Re-circulation
5.2.10 Direction Control with High-side vs. Low-side Recirculation
Table 10 illustrates the login behind direction control with high-side versus low-side recirculation.
Table 10. H-Bridge Operation Logic
1
Forward - High-side re-circulation
IN1 = 1
IN2 = PWM signal with selected duty cycle and frequency
2
Reverse - High-side re-circulation
IN1 = 0
IN2 = PWM signal with selected duty cycle and frequency
3
Forward - Low-side re-circulation
IN1 = PWM signal with selected duty cycle frequency
IN2 = 0
4
Reverse - Low-side re-circulation
IN1 = 0
IN2 = PWM signal with selected duty cycle
2TUO1TUO
PGND
VPWR VPWR
PGND
LOAD
Load
Current
Low-Side Recirculation
(Reverse)
NONO
FFOFFO
2TUO1TUO
PGND
OFF
ON
ON
OF
F
VPWR VPWR
PGND
LOAD
Load
Current
Reverse
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30 Freescale Semiconductor, Inc.
6 Installing Processor Expert Software
6.1 Installing CodeWarrior on your Computer
This procedure explains how to obtain and install the latest version of CodeWarrior (version 10.6 in this guide).
NOTE
The sample software in this kit requires CodeWarrior 10.6 or newer. The component and some
examples in the component package are intended for Kinetis Design Studio 3.0.0. If you have
CodeWarrior 10.6 and Kinetis Design Studio 3.0.0 already installed on your system, skip this section.
1. Obtain the latest CodeWarrior installer file from the Freescale CodeWarrior website here:
www.freescale.com/webapp/sps/site/homepage.jsp?code=CW_HOME&tid=vanCODEWARRIOR.
2. Run the executable file and follow the instructions.
3. In the Choose Components window, select the Kinetis component and click on Next to complete the installation.
Figure 26. Select Components GUI
nCheck Kinetis
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6.2 Downloading the MVHBridge Component and Example Projects
The examples used in this section are based on a pre-configured CodeWarrior project. You must first download the project and its
associated components:
1. Go to the Freescale website www.freescale.com/MVHBRIDGE-PEXPERT
2. Download example projects and H-Bridge component zip file.
3. Unzip the downloaded file and check that the folder contains the files listed in Table 11.
6.2.1 Importing the MVHBridge Component into the Processor Expert Library
1. Launch CodeWarrior by clicking on the CodeWarrior icon (located on your desktop or in Program Files -> Freescale Codewarrior
folder.)
2. When the CodeWarrior IDE opens, go to the menu bar and click Processor Expert -> Import Component(s).
3. In the pop-up window, locate the component file (.PEupd) in the example project folder MVHBridge_PEx_SW\Component. Select
MVHBridge_bxxx.PEupd and ChannelAllocator_bxxx.PEupd files then click Open (see Figure 27).
Table 11: MVHBridge Example Project and Components
Folder Name Folder Contents
CodeWarrior_Examples Example project folder for CodeWarrior.
MVH_K20D72M_brushed Example project for DC brush motor control.
MVH_K20D72M_brushed_FreeMaster Example project intended for control of brushed motor using FreeMaster tool. Latest Freemaster
installation package: www.freescale.com/freemaster
MVH_K20D72M_step_FreeMaster Example project intended for control of stepper motor using FreeMaster tool.
MVH_K20D72M_stepper Example project for stepper motor control using full-stepping and micro-stepping mode.
MVH_K20D72M_stepper_fullstep Example project for stepper motor control demonstrating full-step mode.
MVH_K20D72M_stepper_ramp Example project for stepper motor control demonstrating acceleration and deceleration ramp.
MVH_K64F120M_brushed_2component Example project for DC brush motor control using two H-Bridges (i.e. MC33932 and MC33926).
MVH_K70F120M_brushed Example project for TWR-K70F120M with DC brushed motor control.
MVH_K70F120M_stepper Example project for TWR-K70F120M with stepper motor control using full-stepping and
micro-stepping mode.
MVH_KL25Z48M_brushed_2component Example project for DC brushed motor control using a dual H-Bridge devce (e.g. MC33932 and
33926).
MVH_KL25Z48M_fullstep_ramp Example project for stepper motor control demonstrates acceleration and deceleration ramp in
full-step mode.
Component Processor Expert component folder.
DriverSuite_Examples Example project folder for Driver Suite.
MVH_K20D72M_stepper Example project for stepper motor control uses full-stepping and micro-stepping mode.
KDS_Examples Example project folder for Kinetis Design Studio.
MVH_K20D72M_stepper Example project for stepper motor control, which uses full-stepping and micro-stepping mode.
MVH_K20D72M_stepper_ramp Example project for stepper motor control demonstrating usage of acceleration and deceleration
ramp.
FRDM34931SEVB_Examples Example project folder for CodeWarrior and H-Bridge board FRDM-34931SEVB
MVH_KL25Z_brushed Example project for DC brush motor control.
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Installing Processor Expert Software
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32 Freescale Semiconductor, Inc.
Figure 27. Import MVHBridge Component
4. If the import is successful, the MVHBridge component appears in Components Library -> SW -> User Component (see
Figure 28). The MVHBridge component is ready to use.
Figure 28. MVHBridge Component Location after CodeWarrior Import
nClick
Processor Expert
qClick Open
oSelect
Import Component(s)
pSelect all
.PEupd
components
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Installing Processor Expert Software
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6.2.2 Importing an Example Project into the Processor Expert Library
The following steps show how to import an example from the downloaded zip file into CodeWarrior.
1. In the CodeWarrior menu bar, click File -> Import… In the pop-up window, select General -> Existing Projects into Workspace
and click Next.
Figure 29. Importing an example file (a)
nClick
File > Import
oSelect
General >
Existing Projects into Workspace
pClick Next
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Installing Processor Expert Software
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34 Freescale Semiconductor, Inc.
2. Click Browse and locate the folder where you unzipped the downloaded example files. Find the folder
MVHBridge_PEx_SW\CodeWarrior_Examples and select a project to import. (see Figure 30, which shows
MVH_K20D72M_step_FreeMaster as the imported project). Then click OK.
Figure 30. Importing an example file (b)
rFind and select
an Example project
sClick OK
qClick Browse
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Installing Processor Expert Software
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3. With your project now loaded in the Select root directory box, click on the Copy projects into workspace checkbox. Then click
Finish. Figure 31 shows the CodeWarrior Projects panel and the Components panel after the project has been successfully
imported.
The project is now in the CodeWarrior workspace where you can build and run it.
Figure 31. Importing an example file (c)
uClick Finish
tSelect Copy projects
into workspace
vCodeWarrior Projects panel
and Components panel
upon completion
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36 Freescale Semiconductor, Inc.
6.3 Creating a New Project with Processor Expert and the MVHBridge
Component
If you choose not to use the example project, the following instructions describe how to create and setup a new project that uses the
MVHBridge component. If you do not have the MVHBridge component in the Processor Expert Library, please follow steps in
Section 6.2.1.
To creat a new project do the following:
1. In the CodeWarrior menu bar, select File -> New -> Bareboard Project. When the New Bareboard Project dialog box opens,
enter a project name into the text box and then click Next. (see Figure 32).
Figure 32. Creating an MCU Bare-board Project
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Installing Processor Expert Software
KTFRDM34931UG Rev. 2.0
Freescale Semiconductor, Inc. 37
2. In the Devices dialog box, select the MCU class your project is using in the MCU board (In Figure 33, MK20DX256 has been
selected). Then click Next.
3. In the Connections dialog box, select the type of connection your project uses. (In Figure 33 P&E USB Multilink Universal
[FX]/USB MultiLink has been selected). Then click Next.
Figure 33. Selecting a device and a connection
sClick Next
qSelect the device
you are using
rSelect the connection
you are using
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Installing Processor Expert Software
KTFRDM34931UG Rev. 2.0
38 Freescale Semiconductor, Inc.
4. In the Language and Build Tools Options dialog box, select the options that apply to your project. (In Figure 34, the default
options are selected.) Then click Next.
5. In the Rapid Application Development dialog box, make sure that the Processor Expert button is selected. Then click Finish
Figure 34. Selecting the language, build tools, and the rapid application development options
wClick Finish
tSelect your language
and build tool options
uClick Next
vClick the
Processor Expert
button
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Installing Processor Expert Software
KTFRDM34931UG Rev. 2.0
Freescale Semiconductor, Inc. 39
6. Figure 35 shows the CodeWarrior Projects panel and the Components panel after the project has been successfully created.
Before you can build and run your project, you must add the MVHBridge component (imported in Section 6.2.1) into your project.
Section 6.3.1 outlines this procedure.
Figure 35. CodeWarrior Projects and Components panels with project created
CodeWarrior Projects panel
and Components panel
upon completion
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Installing Processor Expert Software
KTFRDM34931UG Rev. 2.0
40 Freescale Semiconductor, Inc.
6.3.1 Adding the MVHBridge Component into the Project
1. Find MVHBridge in the Components Library and add it into your project (see Figure 36).
Figure 36. Add the MVHBridge Component to the Project
2. Figure 37 shows the Components panel after the component has been added. To view the Component Inspector options, double
click on the MVHBridge component in the Components panel.
Figure 37. Select the Component
nHighlight your project
name in the CodeWarrior
Projects panel
oIn the Components
Library, right-click on
MVHBridge
pClick on
Add to Project
qDouble-click on
component name
to view Component
Inspector options
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Installing Processor Expert Software
KTFRDM34931UG Rev. 2.0
Freescale Semiconductor, Inc. 41
6.3.2 General Settings of MVHBridge Component
The Component Inspector view provides a means of accessing and modifying component properties. When CodeWarrior is set to the
Classic view, properties in the Component Inspector are arranged in a collapsible tree-structure. Property names appear in the Name
column. The Values column lists the current value assigned to the property. Values that are not greyed-out in this column may be modified.
The Details column contains additional information (including error conditions) about the selected property. (If you have CodeWarrior
preferences set to the Tab view, properties will be arranged differently in the Component Inspector; However, the same definitions apply.)
Figure 38 shows typical Component Inspector properties for a project using a DC brushed motor and an MC34931S MCU with a single
H-Bridge. Different components and settings may apply when other types of motors and MCU’s are used.
Figure 38. Component Inspector - brushed DC motor project
For the project in Figure 38 the H-Bridge Model is the top node in the tree structure. A drop-down menu in the Value column allows you
to select the H-Bridge model your project uses.
The Motor Control group is directly below the H-Bridge Model node. The group contains two child nodes: Timer Setting and H-Bridge
A MCU Interface. An MCU with dual H-Bridges would have an H-Bridge B MCU Interface group with settings similar to H-Bridge A. The
settings in each of these groups are detailed below:
Timer Setting when enabled, defines timer settings for the project. (For the MC34931S used in this example, the timer is
enabled by default.) The group contains the following settings:
Timer Component defines the name of the linked TimerUnit_LDD Component.
Timer Device defines the name of the hardware timer being used.
H-Bridge A MCU Interface defines H-Bridge interface setting. The group contains three child nodes:
DC Brush allows you to select the motor control mode and the motor direction:
Control Mode allows you to select whether your settings control the motor speed (Speed Control) or whether the
motor is controlled by GPIO pin signals (State Control).
PWM Frequency sets the Pulse Width Modulation frequency.
Installing Processor Expert Software
KTFRDM34931UG Rev. 2.0
42 Freescale Semiconductor, Inc.
Direction Control determines in which direction the motor is allowed to rotate. Forward means the motor can rotate
only in the clockwise direction. Reverse allows movement in the counterclockwise direction only. Bidirectional allows
the motor to rotate in either direction.
Init Direction determines which direction (forward or reverse) the motor moves at startup.
Device Mode defines the H-Bridge operational mode for the selected device. The mode specifics depend on the device,
but Normal, Sleep, and Stand-by are typical. For more information, see the data sheet for your device. Device Mode is
controlled by enabling and disabling pins. The mode can be changed in your C code using the SetMode method.
Device Settings A associates each of the output pins with a corresponding input pin name.
Enable and Disable Pins settings control the Device Mode. The number and the names of pins in this group depends
on the H-Bridge model you have selected. In all cases, you must assign the appropriate value to each pin name in
the group.
Input Control Pins settings define H-Bridge outputs. These pins are controlled by timer channels or by GPIO pins
according to other settings in the component.
Feedback Pin settings define current measurements on the feedback pin. H-Bridge feedback provides
ground-referenced 0.24% of the high side output current.
ADC Component sets the name of the linked ADC_LDD component.
ADC Device defines the device used for current measurement.
ADC Pin defines the pin used for ADC current sensing.
ADC Conversion Time specifies the time interval in micro-seconds allowed for a single analog to digital
conversion.
Status Flag Pin allows tracking of the H-Bridge status flag. Method GetStatusFlag provides current device status.
Method ClearStatusFlag clears the status flag. Use Event OnStatusFlagA or OnStatusFlagB (depending on the
H-Bridge interface) to handle errors indicated by the status flag.
Auto Initialization when set, causes Processor Expert to automatically make an initialization call. If this option is not set,
your code must make the Init call.
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Installing Processor Expert Software
KTFRDM34931UG Rev. 2.0
Freescale Semiconductor, Inc. 43
6.3.3 Setting up a Project to Control a DC Brushed Motor
1. Select the H-Bridge model you want to configure and set the Motor Control property to Brushed.
Figure 39. Brushed motor control setup
2. Set the Control Mode property. There are two ways to control the DC brushed motor:
Speed Control - motor speed is controlled by your settings. The TimerUnit_LDD component is used to generate the PWM
signal. The PWM Frequency property is visible in this mode only. If you set the Speed Control mode on both interfaces (i.e.
Interface A and Interface B), the PWM Frequency property on Interface B will be set automatically to the same value as
Interface A (because Interface B uses the same timer.)
State Control - motor is controlled by GPIO pins (BitIO_LDD components). This means you can switch the motor on or off
without speed adjustments. The advantage of this mode is that you do not need timer channels. If you set State Control on
both interfaces or you have only a single H-Bridge model (one interface) with State Control, the TimerUnit_LDD component
is not required by the MVHBridge component and you can remove it from the project.
3. Set the PWM Frequency.
4. Set the Direction Control property. The Direction Control property determines what direction the motor is allowed to move in.
Setting the property to Forward restricts the motor's movement to the forward direction only. Setting the property to Reverse
restricts movement to the reverse direction only. A Bidirectional setting allows the motor to move in either direction. The
Bidirectional mode requires two timer channels. Forward or Reverse requires only one timer channel and one GPIO port. This
setting is available only when Speed Control mode is set in the Control Mode property.
nSelect H-Bridge Model
and set Motor Control
to Brushed
pSelect the
PWM Frequency
oSet the
Control Mode
qSet the
Direction Control
options
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Installing Processor Expert Software
KTFRDM34931UG Rev. 2.0
44 Freescale Semiconductor, Inc.
6.3.4 Generating Driver Source Code
After you have completed configuring the components, you are ready to generate the driver code that will be incorporated into your
application. The process is as follows
1. Click on the Generate Processor Expert Code icon in the upper right corner of the Components panel.
Figure 40. Generating the Source Code
2. The driver code for the H-Bridge device is generated into the Generated_Code folder in the Project panel. The component only
generates the driver code. It does not generate application code. Figure 41 shows the locations of the generated driver source
and the application code.
Figure 41. Source code locations
nClick the
Generate Processor
Expert Code icon
Driver code is
generated here
Application source
code belongs here
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Installing Processor Expert Software
KTFRDM34931UG Rev. 2.0
Freescale Semiconductor, Inc. 45
6.3.5 Developing Application Code in Processor Expert
Processor Expert allows you to write application code, add component methods, and build your application without leaving the
CodeWarrior environment.
6.3.5.1 Writing your Application Code
All of your application code must reside in the Sources folder in your project directory. You may modify the code in main.c and Events.c,
but retain the original comments related to usage directions.
6.3.5.2 Adding Component Methods
To add a component method into your application source code:
1. In the Components panel for your project, click on Components. Find the method you wish to add to your code.
2. Drag and drop the Method directly into the source code panel
3. Add the appropriate parameters to the method. (Hovering your mouse over the ethod displays a a list of the required parameters.)
For example, you can open the MVHBridge component method list, drag and drop RotateProportional to main.c and add the necessary
parameters (see Figure 42).
Figure 42. Adding Component Methods
6.3.5.3 Finding Descriptions of the MVHBridge Methods
Hovering your mouse over any of the Methods displays a description of the Method, including a list of required parameter. See Figure 43.
nOpen Referenced_Components
oDrag and Drop
Method into
source code
pAdd required
Method
parameters
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Installing Processor Expert Software
KTFRDM34931UG Rev. 2.0
46 Freescale Semiconductor, Inc.
Figure 43. MVHBridge Method Descriptions
6.3.5.4 Jumping into Function Source Code
CodeWarrior is based on the Eclipse IDE which allows you to jump directly into the source code of a function from within the main routine
while you are editing. To do so, move your mouse cursor over the function name and click. The source code appears in the edit window.
Figure 44. Jumping into a function’s source code
Hover over Method
to veiw description
nHover mouse
over function
name and click
oFunction source
code appears in
edit window
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Installing Processor Expert Software
KTFRDM34931UG Rev. 2.0
Freescale Semiconductor, Inc. 47
6.3.5.5 Compiling, Downloading and Debugging
To compile, download and debug on board, click compile, then click the debug icon in the toolbar. CodeWarrior will download and launch
the program on board (see Figure 45).
Figure 45. Compiling and Downloading the Application
6.4 Frequently Asked Questions
Q: Why do I occasionally unexpected behavior in my DC brushed motor?
A: Check the value of the signals on the enable and disable pins (D1, EN/D2, D3, EN/D4). These signals affect the H-Bridge device
mode. To provide a wider range of MCU compatibility, some pins are wired to more than one MCU board pin using 0 Ω resistors.
Check your schematic and remove resistors as needed to disconnect unused pins.
Q: How do I set up the MVHBridge component when two or more components with conflicting values are configured to control brushed
motors? (See Figure 46)
Figure 46. Conflict in the Required Values for Components in the Project
A: You can use more than one MVHBridge component in same project. These components can share the same timer device in brushed
motor control mode, but the PWM Frequency and Timer Device properties must conform in all of the components.
Q: Can I use both a stepper motor and a brushed DC motor on a single timer?
A: The stepper motor control needs a dedicated timer because the timer period can be dynamically changed. Using a stepper motor and
a brushed DC motor on the same timer pins is possible only when the Control Mode property of the brushed DC motor is set to State
Control.
Q: The TimerUnit_LDD component used by MVHBridge is not set properly and shows some errors.
nTo compile,
click here
oTo download
and debug,
click here
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Installing Processor Expert Software
KTFRDM34931UG Rev. 2.0
48 Freescale Semiconductor, Inc.
A: The reason could be that the TimerUnit_LDD component channels are not allocated correctly. You must change some property of
the MVHBridge component to force allocation of the channels. Change the Output Control property to GPIO and back to PWM if
you are configuring a stepper motor (Motor Control property set to Stepper). For a brushed motor (Motor Control property set to
Brushed) change the Control Mode property to State Control and back to Speed Control on interface A or interface B.
Q: I sometimes get the following unexpected error while generating Processor Expert code: "Generator: FAILURE: Unexpected status
of script: Drivers\Kinetis\TimerUnit_LDD.drv, please contact Freescale support". What causes this?
A: Occasionally, when you enable the MVHBridge component in your project, the TimerUnit_LDD component channels have not been
allocated. If this occurs, changing certain MVHBridge properties will force allocation of the channels. When you are configuring a
brushed motor (Motor Control property set to Brushed), change the Control Mode property to State Control and then back to
Speed Control on interface A or interface B.
Figure 47. Unexpected Error Related to the MVHBridge TimerUnit_LDD Component
Q: I have set up several CPU clock configurations (via the Clock configurations property of the CPU component.) Sometimes during
runtime, when I switch between these configuration (using the CPU SetClockConfiguration method), the speed of the motor appears
to be inaccurate. Why does this occur?
A: Switching to a different configuration results in the use of a different input frequency by a timer device. The MVHBridge component
may not pick up the new value and continues to use the previous value in its calculations.
Schematic
KTFRDM34931UG Rev. 2.0
Freescale Semiconductor, Inc. 49
7 Schematic
Figure 48. Schematic
(---) External signal on PIN 2
(1-2) Signal from micro
(2-3) VDD
(---) External signal on PIN 2
(1-2) Signal from micro
(2-3) GND
D1 SELECT
EN/D2_B SELECT
(1-2) On-board 5V
(---) External signal on PIN 2 or FSD USB 5V
POWER SUPPLY REGULATOR
(---) External signal on PIN 2
(1-2) Signal from micro
IN1 SELECT
(---) External signal on PIN 2
(1-2) Signal from micro
IN2 SELECT
MC34931S
JUMPERS
CONNECTORS
(1-2) 3V3 as VDD
(---) External VDD on PIN 2
(2-3) 5V as VDD
VDD SELECT
5V SELECT
(1) VPWR
POWER INPUT
(2) GND
TEST POINTS
FSD
3V3
OUT
FSD
5V
IN
MCU
FRDM INTERFACE
OUT1/2 CONN
(1-2) Disable
(---) Enable
FB SELECT
MOUNTING HOLES
(1) OUT2
(2) OUT1
https://developer.mbed.org/teams/Freescale/wiki/FRDM-connector-pin-assignments
Pin assignments match FRDM-Type A. Refer to the
Freescale mbed wiki for a list of compatible FRDM
boards.
IO13
OUT2
OUT1
D1
IO8
EN/D2_B
PWM1
IN1
IN2
IN1
PWM2
IN2
D1
EN/D2_B
SF_B
PWM2
SF_B
D1
EN/D2_B
IN1
IN2
FB
OUT1
OUT2
FB
FB
SF_B
IO14
AN0PWM1
IO13
IO8
VBAT
VBAT
VDD
3V3
VBAT
5V
3V3
5V
VDD
VDD
3V3
5V
5V
VDD
J5
OSTTC022162
1
2
D7
RED
AC
U1
MC33931EK / MC34931EK / MC34931SEK
AGND
1
VPWR2
8
SF 32
EP 33
OUT2_2 23
VPWR3 25
PGND3 17
D1
2
FB
3
NC_24 24
PGND2
16
NC_21 21
IN2 29
PGND1
15
NC_9
9
OUT1_2
11
NC_12
12
OUT1_1
10
NC_14
14
CCP 28
NC_20 20
PGND4 18
VPWR4 26
EN/D2
5NC_4
4
NC_19 19
NC_27 27
OUT2_1 22
NC_30 30
IN1 31
VPWR1
7
NC_13
13
NC_6
6
JP7
HDR 1X2
1
2
BH1
SMTSO-M1.6-2.25ET
R4
270.0
D8
BAS70TW-7-F
2
1
34
5
6
R7 1K
GND2
EN/D2_B
+
C4
47uF
50V
3V
TP_D1
R8
10.0K
D3
YELLOW
AC
BH4
SMTSO-M1.6-2.25ET
R9
10.0K
+
C1
47uF
50V
J3
CON_2X6
DNP
1 2
3 4
65
7 8
9 10
11 12
VPWR
R3
4.70K
C5
0.1uF
50V
C9
10nF
50V
JP3
HDR 1X2
1
2
R6 0
JP6
HDR 1X2
1
2
5V
C2
0.1uF
50V
D5
RED
AC
JP1
HDR 1X2
1
2
J4
CON_2X8
DNP
1 2
3 4
65
7 8
9 10
11 12
13 14
15 16
R1
1K
D4
LED GREEN
AC
J1
CON_2X8
DNP
12
34
6 5
78
910
1112
1314
1516
R5 0
C6
0.047UF
50V
SF_BFB
BH2
SMTSO-M1.6-2.25ET
VDD
JP2
HDR 1X3
1
2
3
R2
470
+
C3
10UF
10V
JP5
HDR 1X3
1
2
3
D2
SPT02-236DDB
2
1
3
J2
CON_2X10
DNP
12
34
6 5
78
910
1112
1314
1516
1718
1920
IN1
BH3
SMTSO-M1.6-2.25ET
C8
10nF
50V
U2
MC78M05CDTRKG
OUT 3
IN
1
GND
4
J6
OSTTC022162
1
2
JP4
HDR 1X3
1
2
3
C7
0.033UF
50V
D1
MBRB1045T4G
3
4
1
D6
LED GREEN
AC
GND1IN2
S C .0 1 F 3 3 .c ,J A J 3
Board Layout
KTFRDM34931UG Rev. 2.0
50 Freescale Semiconductor, Inc.
8 Board Layout
8.1 Silkscreen
Figure 49. Silkscreen
Board Bill of Materials
KTFRDM34931UG Rev. 2.0
Freescale Semiconductor, Inc. 51
9 Board Bill of Materials
Table 12. Bill of Materials (1)
Item Qty Schematic Label Value Description Part Number Assy
Opt
Freescale Components
1 1 U1 Freescale device MC34931EK/MC34931SEK (2)
Voltage Regulator
21U2 IC LIN VREG LDO 5 V 0.5 A
35 V DPAK MC78M05CDTRKG
Diodes
31D1 DIODE SCH PWR RECT 10 A 45 V
D2PAK MBRB1045T4G
41D2 DIODE DUAL ARRAY 2 A
6-36 V uQFN-2L SPT02-236DDB
5 1 D3 LED YEL SGL 25 MA SMT 0603 LY Q976-P1S2-36-0-20-R18
6 2 D4, D6 LED GRN SGL 20 MA 0603 LG L29K-G2J1-24-Z
7 2 D5, D7 LED SM RED 0603 ROHS COMPLIANT QTLP600CRTR
81D8 DIODE SCH TRIPLE 70 MA 70 V / 200
MW SOT363 BAS70TW-7
Capacitors
9 2 C1, C4 47 µF CAP ALEL 47 μF 50 V 20% AUTO SMD UBC1H470MNS1GS
10 2 C2, C5 0.1 µF CAP CER 0.1 uF 50 V 5% X7R
AEC-Q200 0603 C0603C104J5RACAUTO
11 1 C3 10 µF CAP TANT 10 μF 10 V 10% — 3216-18 293D106X9010A2TE31
12 1 C6 0.047 µF CAP CER 0.047 μF 50 V 5% X7R 0805 C0805C473J5RAC
13 1 C7 0.033 µF CAP CER 0.033 μF 50 V 5% X7R 0603 06035C333JAT2A
14 2 C8, C9 0.1 µF CAP CER 0.01 μF 50 V 5% X7R 0603 06035C103JAT2A
Resistors
15 2 R1, R7 1.0 KΩRES -- 1 KΩ 1/4 W 1% AEC-Q200 0603
ANTISURGE ESR03EZPF1001
16 1 R2 470 ΩRES MF 470 Ω 1/4 W 5% AEC-Q200
1206 CRCW1206470RJNEA
17 1 R3 4.7 KΩRES MF 4.7 KΩ 1/4 W 1% AEC-Q200
0603 CRCW06034K70FKEA
18 1 R4 270 ΩRES MF 270.0 Ω 1/10 W 1% 0603 RK73H1JTTD2700F
19 2 R5, R6 0 ΩRES MF ZERO Ω 1/10 W — AEC-Q200
0603 RK73Z1JTTD
20 1 R8, R9 10 KΩRES MF 10.0 KΩ 1/10 W 1% 0603 RK73H1JTTD1002F
Board Bill of Materials
KTFRDM34931UG Rev. 2.0
52 Freescale Semiconductor, Inc.
Switches, Connectors, Jumpers and Test Points
21 12
TP_D1,EN/D2_B, FB,
GND1,GND2, IN1,IN2,
SF_B, 3V,5V,VPWR,VDD
TEST POINT 40 MIL DRILL 180 MIL
22 4 JP1,JP3,JP6,JP7 HDR 1X2 TH 100 MIL SP 338H SN
100L TSW-102-07-T-S
23 3 JP2,JP4,JP5 HDR 1x3 TH 100 MIL SP 343H SN
100L TSW-103-07-T-S
24 2 J1, J4 HDR 2X8 TH 100MIL CTR 338H SN
100L TSW-108-07-T-D
25 1 J2 HDR 2X10 TH 100MIL CTR 343H SN
100L TSW-110-07-T-D
26 1 J3 HDR 2X6 TH 100MIL CTR 338H SN
100L TSW-106-07-T-D
27 2 J5, J6 CON 1X2 TB 5.08 MM SP 406H SN
138L OSTTC022162
Notes
1. Freescale does not assume liability, endorse, or warrant components from external manufacturers are referenced in circuit drawings or tables.
While Freescale offers component recommendations in this configuration, it is the customer’s responsibility to validate their application.
2. Critical components. For critical components, it is vital to use the manufacturer listed.
Table 12. Bill of Materials (1) (continued)
Item Qty Schematic Label Value Description Part Number Assy
Opt
Accessory Item Bill of Materials
KTFRDM34931UG Rev. 2.0
Freescale Semiconductor, Inc. 53
10 Accessory Item Bill of Materials
Table 13. Bill of Materials (3)
Item Qty Part Number Description
1 1 FRDM-KL25Z Freescale Freedom Development Platform for Kinetis KL14/15/24/25 MCUs
Notes
3. Freescale does not assume liability, endorse, or warrant components from external manufacturers are referenced in circuit drawings or tables.
While Freescale offers component recommendations in this configuration, it is the customer’s responsibility to validate their application.
References
KTFRDM34931UG Rev. 2.0
54 Freescale Semiconductor, Inc.
11 References
Following are URLs where you can obtain information on related Freescale products and application solutions:
11.1 Support
Visit www.freescale.com/support for a list of phone numbers within your region.
11.2 Warranty
Visit www.freescale.com/warranty to submit a request for tool warranty.
Freescale.com Support
Pages Description URL
FRDM-34931S-EVB Tool Summary Page www.freescale.com/FRDM-34931S-EVB
FRDM-34931-EVB Tool Summary Page www.freescale.com/FRDM-34931-EVB
MC34931 Product Summary Page www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MC34931
FRDM-KL25Z Tool Summary Page www.freescale.com/FRDM-KL25Z
ARM®mbed™ mbed FRDM-KL25Z
Upgrade Page mbed.org/handbook/mbed-FRDM-KL25z-Upgrade
CodeWarrior Tool Summary Page www.freescale.com/webapp/sps/site/homepage.jsp?code=CW_HOME&tid=vanCO
DEWARRIOR
Processor Expert Code
Model Code Walkthrough Video www.freescale.com/video/processor-expert-code-model-codewarrior-code-walkthrough:PROE
XPCODMODCW_VID
Revision History
KTFRDM34931UG Rev. 2.0
Freescale Semiconductor, Inc. 55
12 Revision History
Revision Date Description of Changes
1.0 7/2015 • Initial Release
2.0
9/2015 • Added processor expert section
9/2015
• Fixed invalid Section reference
• Fixed duplicate section title
• Added Processor Expert, CodeWarrior, Kinetis to tradmark citations in last page
‘/ROHS O O '0 :" freescale‘“
Document Number: KTFRDM34931UG
Rev. 2.0
9/2015
Information in this document is provided solely to enable system and software implementers to use Freescale products.
There are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits based
on the information in this document.
Freescale reserves the right to make changes without further notice to any products herein. Freescale makes no
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Freescale assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any
and all liability, including without limitation consequential or incidental damages. “Typical” parameters that may be
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