OM13071 LPCXpresso824-MAX Development board

OM13071 LPCXpresso824-MAX Development board
UM10830
OM13071 LPCXpresso824-MAX Development board
Rev. 1 — 29 September 2014
User manual
Document information
Info
Content
Keywords
OM13071, LPC82x, development board, mbed, arduino
Abstract
This user manual describes the LPCXpresso824-MAX development
board.
UM10830
NXP Semiconductors
OM13071
Revision history
Rev
Date
Description
1
Initial version
20140929
Contact information
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
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Rev. 1 — 29 September 2014
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1. Introduction
The LPCXpresso-MAX family of boards provides a powerful and flexible development
system for NXP's low end Cortex-M0+ MCUs. They can be used with a range of
development tools, including the LPCXpresso IDE, in addition to ARM's mbed online
toolchain. The LPCXpresso824-MAX board is developed by NXP to enable evaluation of
and prototyping with the LPC82x family of MCUs. Fig 1 shows the LPCXpresso824-MAX
Board.
Fig 1.
LPCXpresso824-MAX Board
1.1
Features
The LPCXpresso824-MAX board includes the following features:
• Compatible with LPCXpresso IDE, mbed, and other toolchains.
• On-board CMSIS-DAP (debug probe) with USB, based on LPC11U35 MCU.
• Debug connector to allow debug of target MCU through an external probe.
• Tri-color LED.
• Target ISP and WAKE buttons.
• Target Reset button.
• Target pins available on ‘standard LPCXpresso/mbed’ expansion connector.
• Arduino connectors compatible with the “Arduino UNO” platform.
• Pmod expansion header.
®
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• Prototyping area.
• Powering options from multiple sources.
• Options to allow measurement of current consumed by target MCU.
2. Board layout
The LPCXpresso824-MAX development board layout is shown in Fig 2.
Fig 2.
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User manual
LPCXpresso824-MAX development board layout
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2.1 Jumper settings
Jumpers on the LPCXpresso824-MAX board can be used to configure debug probe
selection (on-board vs off-board) or to measure power consumption as described in
sections 2.1.1 and 2.1.2.
2.1.1 JP1: on-board/off-board debug
When this jumper is open (default), the on-board debug probe (LPC11U35 device) is
used as the debug interface. The JP1 header is not fitted during manufacture of the
board. The debug probe boots from flash, enumerates as a CMSIS-DAP device, mbed
mass storage device, and mbed serial port. See section 5 for more details on the serial
port device.
When JP1 is closed (jumper fitted), the on-board debug probe is held in reset, and an
external debug probe can be connected using the P5 connector. The Reset button can
also be held down at board power-up to prevent the LPC11U35 booting up as a
CMSIS-DAP debug probe.
Note: The mbed serial device will not enumerate when using an external debug probe.
2.1.2 JP2: target current
The JP2 jumper is provided to enable supply current to the measuring board by placing
an ammeter in line with JP2 pins. By default, the solder jumper (SJ2) bypasses the JP2
jumper. Header P1 can be installed to measure supply power (across a 2.43 ohm resistor
on the board). Fig 3 shows a close up of the board in the area where SJ2 and P1 are
located. The IC below SJ2 is the LPC824.
Fig 3.
Close up of board showing SJ2 and P1
See the schematic, available at http://www.lpcware.com/lpcxpresso-max-boards for more
information.
2.2 Buttons
The LPC824Xpresso-MAX has three push buttons available to control the operation of
the LPC824 (target) MCU. Their functions are described in sections 2.2.1, 2.2.2, and
2.2.3.
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2.2.1 Reset
This button is normally used to reset the LPC824. Holding down this button when the
board is powered-up also prevents the LPC11U35 from booting. See section 2.1.1.
2.2.2 ISP
The ISP button connects to the LPC824 PIO_12 pin and can be used to force the
LPC824 into ISP boot mode. This can be useful when the LPC824 flash is programmed
with code that disables the SWD debug pins or changes timing settings so that the debug
probe has problems communicating with it. To force ISP boot, hold the ISP button down
while pressing and releasing the reset button.
The ISP button can also be used to trigger an interrupt by configuring the PIO_12 pin and
associated interrupt controls within your application code.
2.2.3 Wake
Depressing this button triggers a wake interrupt by pulling-down the WAKEUP input (pin
4) of the LPC824.
2.3 LEDs
There are five LED devices on the board: one tricolor device (with red, green, and blue
channels) for user programs, three discrete LEDs that indicate the activity of the debug
probe, and a power LED.
The Tricolor LED is driven by PIO_12 (red), PIO_16 (green) and PIO_27 (blue), with the
LEDs illuminating when those lines are driven low.
Note: The red tricolor LED channel is also controlled by PIO_12, so the tricolor LED turns
red when ISP is depressed.
The status LEDs operate as follows:
• USB Disk LED (red): illuminates when the mbed disk device is being accessed.
• CMSIS-DAP (green): illuminates when debug activity (control of the target SWD
port) is occurring.
• USB Comm (blue): illuminates when the mbed serial port device is active.
3. Expansion connectors
The LPCXpresso824-MAX board provides four options for expanding the capabilities of
the board by adding hardware to it:
• Arduino UNO style headers.
• LPCXpresso/mbed headers.
• Pmod header.
• Prototyping area.
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See the board schematics, available at http://www.lpcware.com/lpcxpresso-max-boards,
for more information.
3.1 Arduino UNO headers
Arduino is a popular hobbyist platform, with a standardized set of expansion connectors.
The Arduino connectors on the LPCXpresso824-MAX board are compatible with the
“Arduino UNO” platform. Several compatible expansion cards (shields) can be obtained
from vendors such as Sparkfun, Adafruit, and others. Shield designs might vary in their
implementation because the Arduino UNO platform is based on guidelines and is not a
fully defined specification. See the LPCXpresso824-MAX schematics and those of the
board(s) you are interfacing before attempting to connect the two together.
The Arduino UNO headers are factory installed on the LPCXpresso824-MAX.
3.2 LPCXpresso™ / mbed headers
The LPCXpresso headers on the LPCXpresso824-MAX are suitable for use with existing
LPCXpresso compatible baseboards, available from 3rd parties such as Embedded
Artists. Check the component clearance on any baseboard you are considering to ensure
components on the baseboard will not interfere with the mounting of the
LPCXpresso824-MAX because this board is wider than the original mbed and
LPCXpresso™ boards.
LPCXpresso expansion headers can be mounted on the bottom side of the PCB but are
not factory fitted.
3.3 Pmod™ header
Pmod support is available on the LPCXpresso824-MAX:
• Pins 1 – 6 (left side) will support Pmod™ Type 2 (SPI) or Type 1 (GPIO).
• Pins 7 – 12 (right side) design to support I C. Will Pmod™ Type 1 (GPIO)
interface.
2
Mount the Pmod connectors on the top side of the PCB.
Note: Connectors are not factory fitted for this interface.
4. Using development tools
4.1 LPCXpresso IDE
LPCXpresso IDE supports programming and debugging LPCXpresso-MAX boards using
the on-board CMSIS-DAP debug interface, or with an external debug probe, such as
LPC-Link2. Version 7.4 or later of the LPCXpresso IDE is required.
Download the IDE from: http://www.lpcware.com/lpcxpresso.
4.1.1 Debugging via the built-in debug probe
LPCXpresso824-MAX is pre-programmed with CMSIS-DAP/mbed firmware and will work
out of the box with the LPCXpresso IDE. The IDE can detect the board as a
CMSIS-DAP probe when it is used for the first time and asks for confirmation that this is
the correct target. For subsequent debug sessions, this target selection is made
automatically.
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If running on Windows, you will need to install the mbed Windows serial port driver so
that the LPCXpresso824-MAX board’s CMSIS-DAP debug link is visible to LPCXpresso.
Download the drivers from:
http://mbed.org/handbook/Windows-serial-configuration#1-download-the-mbed-windowsserial-port
4.1.2 Debugging with an external debug probe
JP1 should be closed (jumper fitted) to use the board with an external debug probe. See
section 2.1.1 for more information.
4.2 mbed
The LPCXpresso824-MAX board implements the latest version of the mbed interface
from ARM. When connected to a PC, the board enumerates as a mass-storage device.
Firmware images placed on it are written to the target MCU after a power cycle, per other
mbed boards. See http://www.mbed.org/teams/NXP for more information on
downloading the mbed SDK for the board and the mbed development environment.
4.3 Using other toolchains
A number of other toolchains can be used since the LPCXpresso-MAX boards support
the CMSIS-DAP protocol. Refer to the manuals from your development toolchain
provider for more information on how to use CMSIS-DAP probes.
5. Example code and drivers
The LPCOpen platform allows users to quickly and easily utilize NXP's extensive array of
microcontroller software libraries to create and develop multifunctional products. The
platform uses common APIs that work equally across all microcontroller families and can
be built with Keil, IAR, and LPCXpresso toolchains. Detailed documentation and
examples make it easy to integrate the necessary development tools into projects. For
more information on LPCOpen, go to http://www.lpcware.com/lpcopen. For direct access
to the LPCOpen drivers for the LPCXpresso824-MAX board, go to:
http://www.lpcware.com/lpcxpresso-max-boards.
The LPCXpresso824-MAX enumerates an mbed serial port device when installed. This
serial port is bridged from a LPC824 UART by the LPC11U35 to its USB port and is used
by the mbed tools. This device can also be used by host computer applications (such as
Tera Term) for debugging and application purposes when developing with other
toolchains. Some of the UART examples in LPCOpen show you how to use this port
(example, periph_mrt). However, other examples might use a different UART on the
LPC824 that require external circuitry or cables to be connected using the expansion
connectors.
6. Re-flashing the debug probe (LPC11U3x)
The debug probe (LPC11U3x MCU) on the LPCXpresso824-MAX is programmed during
manufacture and does not require any update. However, if a firmware update is required,
follow these steps to re-program the flash:
1. Unplug the usb connector.
2. Hold down the reset button and plug in the usb connector.
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3.
4.
5.
6.
The board will appear on your system as a disk called CRP DISABLD.
Delete the file called firmware.bin on this disk.
Drag and drop the new binary image to be programmed onto this disk.
Connect and re-connect usb.
7. Board specifications
o
Recommended operating conditions: 0 to 70 C ambient temperature
Weight: 0.7 ounces
Size: 2.15 x 3.05 inches
The LPCXpresso824-MAX board is RoHS compliant.
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8. Legal information
8.1 Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. NXP Semiconductors does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liability for the consequences
of use of such information.
8.2 Disclaimers
Limited warranty and liability — Information in this document is believed to
be accurate and reliable. However, NXP Semiconductors does not give any
representations or warranties, expressed or implied, as to the accuracy or
completeness of such information and shall have no liability for the
consequences of use of such information.
In no event shall NXP Semiconductors be liable for any indirect, incidental,
punitive, special or consequential damages (including - without limitation lost profits, lost savings, business interruption, costs related to the removal
or replacement of any products or rework charges) whether or not such
damages are based on tort (including negligence), warranty, breach of
contract or any other legal theory.
Notwithstanding any damages that customer might incur for any reason
whatsoever, NXP Semiconductors’ aggregate and cumulative liability
towards customer for the products described herein shall be limited in
accordance with the Terms and conditions of commercial sale of NXP
Semiconductors.
Right to make changes — NXP Semiconductors reserves the right to make
changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all information supplied prior
to the publication hereof.
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Suitability for use — NXP Semiconductors products are not designed,
authorized or warranted to be suitable for use in life support, life-critical or
safety-critical systems or equipment, nor in applications where failure or
malfunction of an NXP Semiconductors product can reasonably be expected
to result in personal injury, death or severe property or environmental
damage. NXP Semiconductors accepts no liability for inclusion and/or use of
NXP Semiconductors products in such equipment or applications and
therefore such inclusion and/or use is at the customer’s own risk.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. NXP Semiconductors makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Customers are responsible for the design and operation of their applications
and products using NXP Semiconductors products, and NXP
Semiconductors accepts no liability for any assistance with applications or
customer product design. It is customer’s sole responsibility to determine
whether the NXP Semiconductors product is suitable and fit for the
customer’s applications and products planned, as well as for the planned
application and use of customer’s third party customer(s). Customers should
provide appropriate design and operating safeguards to minimize the risks
associated with their applications and products.
NXP Semiconductors does not accept any liability related to any default,
damage, costs or problem which is based on any weakness or default in the
customer’s applications or products, or the application or use by customer’s
third party customer(s). Customer is responsible for doing all necessary
testing for the customer’s applications and products using NXP
Semiconductors products in order to avoid a default of the applications and
the products or of the application or use by customer’s third party
customer(s). NXP does not accept any liability in this respect.
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
authorization from competent authorities.
All information provided in this document is subject to legal disclaimers.
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9. Contents
1.
2.
2.1
2.1.1
2.1.2
2.2
2.2.1
2.2.2
2.2.3
2.3
3.
3.1
3.2
3.3
4.
4.1
4.1.1
4.1.2
4.2
4.3
5.
6.
7.
8.
8.1
8.2
9.
Introduction ......................................................... 3
Board layout ........................................................ 4
Jumper settings .................................................. 5
JP1: on-board/off-board debug .......................... 5
JP2: target current.............................................. 5
Buttons ............................................................... 5
Reset.................................................................. 6
ISP ..................................................................... 6
Wake .................................................................. 6
LEDs .................................................................. 6
Expansion connectors ........................................ 6
Arduino UNO headers ........................................ 7
LPCXpresso™ / mbed headers.......................... 7
Pmod™ header .................................................. 7
Using development tools .................................... 7
LPCXpresso IDE ................................................ 7
Debugging via the built-in debug probe .............. 7
Debugging with an external debug probe........... 8
mbed .................................................................. 8
Using other toolchains ........................................ 8
Example code and drivers .................................. 8
Re-flashing the debug probe (LPC11U3x) ......... 8
Board specifications ........................................... 9
Legal information .............................................. 10
Definitions ........................................................ 10
Disclaimers....................................................... 10
Contents ............................................................. 11
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in the section 'Legal information'.
© NXP B.V. 2014.
All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
Date of release: 29 September 2014
Document identifier: UM10830
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