MICROCHIP ISELED Development Platform User Guide
- June 9, 2024
- MICROCHIP
Table of Contents
ISELED Development Platform
ISELED® Development Platform User’s Guide
2022 Microchip Technology Inc. and its subsidiaries
DS50003043B
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ISBN: 978-1-5224-9948-0
DS50003043B-page 2
2022 Microchip Technology Inc. and its subsidiaries
ISELED® DEVELOPMENT PLATFORM USER’S GUIDE Preface
NOTICE TO CUSTOMERS
All documentation becomes dated, and this manual is no exception. Microchip
tools and documentation are constantly evolving to meet customer needs, so
some actual dialogs and/or tool descriptions may differ from those in this
document. Please refer to our website (www.microchip.com) to obtain the latest
documentation available.
Documents are identified with a “DS” number. This number is located on the
bottom of each page, in front of the page number. The numbering convention for
the DS number is “DSXXXXXXXXA”, where “XXXXXXXX” is the document number and
“A” is the revision level of the document. For the most up-to-date information
on development tools, see the MPLAB® IDE online help. Select the Help menu,
and then Topics, to open a list of available online help files.
DOCUMENT LAYOUT
This guide contains the following sections:
· Chapter 1. “The ISELED® Development Platform” · Chapter 2. “Hardware” ·
Chapter 3. “Software” · Chapter 4. “Troubleshooting Common Problems” · Chapter
5. “Appendix”
CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS
Description
Represents
Arial font: Italic characters
Initial caps
All caps Quotes Underlined, italic text with right angle bracket Bold
characters
Referenced books Emphasized text A window A dialog A menu selection An
operating mode, alarm state, status, or chassis label A field name in a window
or dialog A menu path
A dialog button A tab
Examples
MPLAB® IDE User’s Guide …is the only compiler… the Output window the Settings
dialog select Enable Programmer ALARM
“Save project before build”
File>Save
Click OK Click the Power tab
2022 Microchip Technology Inc.
DS50003043B-page 3
ISELED® Development Platform User’s Guide
DOCUMENTATION CONVENTIONS
N`Rnnnn
A number in verilog format, where N is the total number of
digits, R is the radix and n is a digit.
Text in angle brackets < >
A key on the keyboard
Courier New font:
Plain Courier New
Sample source code
Filenames
File paths
Keywords
Command-line options
Bit values
Constants
Italic Courier New
A variable argument
Square brackets [ ]
Optional arguments
Curly brackets and pipe character: { | }
Ellipses…
Choice of mutually exclusive arguments; an OR selection
Replaces repeated text
Represents code supplied by user
4b0010, 2hF1
Press
define START autoexec.bat c:mcc18h _asm, _endasm, static -Opa+, -Opa0, 1
0xFF, `A’ file.o, where file can be any valid filename mcc18 [options] file
[options] errorlevel {0|1}
var_name [, var_name…] void main (void) { … }
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Microchip provides online support via our website at www.microchip.com. This
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contains the following information:
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CUSTOMER SUPPORT
Users of Microchip products can receive assistance through several channels:
· Distributor or Representative · Local Sales Office · Field Application
Engineer (FAE) · Technical Support
Customers should contact their distributor, representative or field
application engineer (FAE) for support. Local sales offices are also available
to help customers. A listing of sales offices and locations is included in the
back of this document.
DS50003043B-page 4
2022 Microchip Technology Inc.
Technical support is available through the website at:
http://www.microchip.com/support.
DOCUMENT REVISION HISTORY
Revision A (November 2020) · Initial release of this document.
Revision B (March 2022) · Updated Chapter 1. “The ISELED® Development
Platform” · Updated Chapter 2. “Hardware” · Made minor editorial corrections
Preface
2022 Microchip Technology Inc.
DS50003043B-page 5
ISELED® Development Platform User’s Guide
NOTES:
DS50003043B-page 6
2022 Microchip Technology Inc.
ISELED® DEVELOPMENT PLATFORM USER’S GUIDE
Table of Contents
Preface …………………………………………………………………………………………………………… 3 Chapter 1. ISELED
Curiosity HPC Development Platform
1.1 Introduction………………………………………………………………………………………… 8 1.2 Development Platform
Requirements ……………………………………………………. 8 1.3 ISELED® Development Platform Overview
…………………………………………… 9 Chapter 2. Hardware 2.1 Hardware
Features……………………………………………………………………………. 16 2.2 Hardware Configuration Options
…………………………………………………………. 27 Chapter 3. Software Chapter 4. Troubleshooting
Common Problems 4.1 ISELED Smart LEDS Do Not Illuminate ………………………………………………..
31 Chapter 5. Appendix 5.1 mikroBUS Add-On Header ………………………………………………………………….
32 Worldwide Sales and Service ………………………………………………………………………… 35
2022 Microchip Technology Inc.
DS50003043B-page 7
ISELED® DEVELOPMENT PLATFORM USER’S GUIDE
Chapter 1. The ISELED® Development Platform
1.1 INTRODUCTION
The Microchip ISELED® Development Platform provides a modular environment for
rapid prototyping and evaluation of automotive ambient lighting applications
that adhere to the ISELED Smart LED standard. ISELED stands for Integrated
Smart Embedded LEDs as defined by the ISELED Alliance. ISELED integrates an
RGB LED and the LED controller all in one module. LEDs are calibrated during
production and all calibration data is stored within the LED module, not the
target MCU. ISELED devices use a simple, 2-wire communication interface where
up to 4,079 LEDs can be daisy-chained together in series.
Note: For more details about ISELED and the standard, visit www.iseled.com.
1.2 DEVELOPMENT PLATFORM REQUIREMENTS
The ISELED Development Platform is comprised of multiple components. The
required hardware is listed below: · Development Platform Controller Board.
Select one of the following:
– Curiosity HPC Development Board (PN: DM164136) a) Target MCU (Controller
Board): PIC18F25K42. Replaces the default MCU (PIC16F18875) on the Curiosity
HPC (PN: PIC18F25K42-I/SP)
– ATSAMC21 Xplained Pro (PN: ATSAMC21-XPRO) a) ATMBUSADAPTER-XPRO (PN:
ATMBUSADAPTER-XPRO). Required for Controller to Interface Board connection.
– dsPIC33C® Curiosity Development Board (PN: DM330030) · ISELED Interface
Board
– mikroBUSTM Add-On Board Standard (PN: APG00112) · ISELED Development Board
(choose one):
– Osram ISELED Development Board (PN: APG00113) – Dominant ISELED Development
Board (PN: APG00114) · USB Cable – Micro USB (PN: ATUSBMICROCABLE-XPRO) · 7V
Power Supply (Optional, 6-7V Max) – 7V, 110-220V, 1.3A, 2.5mm ID x 5.5mm OD ·
Computer – Windows 7 or newer – High-speed USB port
Note: All hardware listed must be purchased separately from Microchip
(new.microchipdirect.com) or from an approved distributor.
2022 Microchip Technology Inc.
DS50003043B-page 8
ISELED® Development Platform User’s Guide
Required Software:
For the ISELED software driver, contact your local sales or fill out the
software inquiry form at www.microchip.com/iseled.
1.3 ISELED® DEVELOPMENT PLATFORM OVERVIEW
Three configurations for the ISELED Development Platform are presented in this
User Guide. A Microchip PIC® MCU variant which utilizes the Curiosity HPC
development board, the Microchip dsPIC33C® Curiosity development board and the
Xplained Pro variant which uses the ATSAMC21-XPRO. The hardware components and
default jumper configuration settings for each setup are summarized in the
following sections.
1.3.1 ISELED Curiosity HPC Development Platform
The key hardware components for the ISELED Curiosity HPC Development Platform
are listed below:
1. Curiosity HPC a) Development board using the PIC18F25K42 target MCU.
2. ISELED Interface Board a) Configuration interface and the gateway between
the Curiosity HPC and the ISELED Development Board.
3. ISELED Development Board a) Development board with 10 ISELED Smart LEDs.
FIGURE 1-1:
ISELED® CURIOSITY HPC DEVELOPMENT PLATFORM
DS50003043B-page 9
2022 Microchip Technology Inc.
The ISELED® Development Platform
1.3.1.1 DEFAULT JUMPER SETTINGS
The default configuration for use with the demonstration firmware is as
follows: · Curiosity HPC
– Replace the “Target Device” MCU with the PIC18F25K42. – Set the power supply
jumper to 5V.
FIGURE 1-2:
CURIOSITY HPC DEFAULT SUPPLY JUMPER SETTING
FIGURE 1-3:
· ISELED Interface Board CURIOSITY HPC ISELED® INTERFACE BOARD DEFAULT JUMPER SETTINGS
2022 Microchip Technology Inc.
DS50003043B-page 10
ISELED® Development Platform User’s Guide
· ISELED Development Board – Set the power supply jumper to 5V-VEXT.
FIGURE 1-4:
ISELED® DEVELOPMENT BOARD DEFAULT JUMPER SETTINGS
FIGURE 1-5:
1.3.2 ISELED XPRO Development Platform
The key hardware components for the XPRO Development Platform are listed
below: 1. ATSAMC21-XPRO
a) Development board using the SAMC21J18A-AUT target MCU. 2. ATMBUSADAPTER-
XPRO
a) mikroBUS XPRO adapter board. 3. ISELED Interface Board
a) Configuration interface and the gateway between the Curiosity HPC and the
ISELED Development Board.
4. ISELED Development Board a) Development board with 10 ISELED Smart LEDs.
ISELED® XPRO DEVELOPMENT PLATFORM
DS50003043B-page 11
2022 Microchip Technology Inc.
The ISELED® Development Platform
1.3.2.1 DEFAULT JUMPER SETTINGS
The default configuration for use with the demonstration firmware is as
follows: · SAMC21-XPRO
– Set the power supply jumper, VCC-SEL, to 5.0V.
FIGURE 1-6:
SAMC21 XPRO DEFAULT SUPPLY JUMPER SETTING
5. ATMBUSADAPTER-XPRO
– Attach the ISELED Interface Board to the mikroBUS socket.
– Set the power supply jumper (NOT the power supply breakout header, EXT) to
+5V.
FIGURE 1-7:
ATMBUSADAPTER-XPRO DEFAULT SUPPLY JUMPER SETTING
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ISELED® Development Platform User’s Guide
FIGURE 1-8:
· ISELED Interface Board SAMC21-XPRO ISELED® INTERFACE BOARD DEFAULT JUMPER SETTINGS
1.3.3 ISELED Curiosity dsPIC33C®
The key hardware components for the ISELED dsPIC33C Curiosity Development
Platform are listed below:
1. dsPIC33C Curiosity Development Board a) dsPIC33C Curiosity Development
Board with the dsPIC33CK256MP508 single-core high performance DSC.
2. ISELED Interface Board a) Configuration interface and the gateway between
the dsPIC33C Curiosity and the ISELED Development Board.
3. ISELED Development Board a) Development board with 10 ISELED Smart LEDs.
DS50003043B-page 13
2022 Microchip Technology Inc.
FIGURE 1-9:
The ISELED® Development Platform
ISELED® dsPIC33C® CURIOSITY DEVELOPMENT PLATFORM
1.3.3.1 DEFAULT JUMPER SETTINGS
The default configuration for use with the demonstration firmware is as
follows: · dsPIC33C Curiosity
– Set jumper, J11, to +5V USB Power.
FIGURE 1-10:
dsPIC33C® CURIOSITY POWER SUPPLY JUMPER SETTING
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ISELED® Development Platform User’s Guide
FIGURE 1-11:
· ISELED Interface Board
dsPIC33C® CURIOSITY ISELED® INTERFACE BOARD DEFAULT JUMPER SETTINGS
· ISELED Development Board – Set the power supply jumper to 5V-VEXT.
FIGURE 1-12:
ISELED® DEVELOPMENT BOARD DEFAULT JUMPER SETTINGS
DS50003043B-page 15
2022 Microchip Technology Inc.
ISELED® DEVELOPMENT PLATFORM USER’S GUIDE
Chapter 2. Hardware
2.1 HARDWARE FEATURES
The key features of the ISELED Development Platform are listed in the
following sections.
2.1.1 Special Microcontroller Considerations
2.1.1.1 3.3V/5V OPERATION
The Microchip ISELED Development Platform is compatible with a multitude of
microcontrollers ranging from 8-bit PIC MCUs to 32-bit ARM® MCUs. While the
ISELED Smart LEDs require a 5V supply voltage, the ISELED Development Platform
can operate at 3.3V or 5V, depending on the requirements of the host MCU.
2.1.2 ISELED Smart LED Driver Each ISELED Smart LED utilizes a built-in,
internal driver circuit to communicate with the master MCU. This driver, which
is connected to the two ISELED bus pins, SIOP and SION, has the following
characteristics:
1. 5V Supply Voltage 2. Idle-High 3. Open Drain 4. Bidirectional Microchip’s
ISELED Interface Board (mikroBUS add-on board compatible) has been designed to
fulfill these four criteria. The Interface Board functions as the bridge
between the master MCU and the ISELED bus/driver. The ISELED Interface Board
can be configured to support a wide range of Microchip MCUs. Microchip’s
ISELED MCUs use either SPI or UART to generate the required ISELED
communication protocol. Note that not all Microchip MCUs are ISELED
compatible.
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ISELED® Development Platform User’s Guide
2.1.2.1 ISELED INTERFACE BOARD USE CASE CONFIGURATION OVERVIEW
The table below provides a summary of the possible use cases supported by the various Microchip MCUs.
TABLE 2-1: ISELED® INTERFACE BOARD USE CASE CONFIGURATION OVERVIEW
Use Case
MCU I/O Characteristics
ISELED® Interface
Idle State Open Drain Supply Voltage Board Configuration
Comments
1
Idle High Yes
5V or 3V(1)
J11: P-SPI
Configuration for the PIC18F
J12: N-SPI
and similar devices. Since the
J9: MISO-DIR
PIC18F’s SPI is idle-high, has
J5: MOSI-DIR
an open drain output and is bidi-
J10: SCK-DIR
rectional at 5V, no interface cir-
J6: Open
cuitry is required. Configure the ISELED® Interface Board for a
direct connection between the
MCU SPI I/O and the ISELED
bus.
2
Idle High No
5V
J11: P-SPI J12: N-SPI J9: MISO-DIR J5: MOSI-LS J10: SCK-DIR J6: LS-NON
Configuration for the SAMC21C and similar devices. The SAMC21’s SPI is idle- high and bidirectional at 5V. However, because the SPI output is NOT open drain, configure the ISELED Interface Board to use the level shifter to convert the I/O to open drain.
3
Idle Low Yes or No 5V
J11: P-SPI J12: N-SPI J9: MISO-DIR J5: MOSI-LS J10: SCK-DIR J6: LS-INV
Configuration for the dsPIC33, PIC24F and similar devices. These devices have an SPI that is idle-low. In this instance, the MOSI line must be inverted to force the signal to an idle-high state. Set J5 to MOSI-LS and J6 to LS-INV.
4
Idle High No
3V
J11: P-SPI J12: N-SPI J9: MISO-LS J5: MOSI-LS J10: SCK-LS J6: LS-NON
Microchip devices that only support 3V operation, have an SPI that is idle- high and are not open drain. This set up makes use of level shifters (U2, U5 for 5V-to-3V and U3 for 3V-to-5V).
5
Idle Low No
3V
J11: P-SPI J12: N-SPI J9: MISO-LS J5: MOSI-LS J10: SCK-LS J6: LS-INV
Microchip devices that only support 3V operation, have an SPI that is idle-low and are not open drain. This set up makes use of level shifters (U2 and U5) and an inverter (U4 also functions as 3V-5V shifter).
6
N/A
N/A
5V
J11: P-UART J12: N-UART J9, J5, J10, J6: Open
Most MCU UARTs are compatible with the ISELED driver interface. In this instance, there is no need for external interface circuity. Set J11 and J12 to UART.
Note 1: Although the PIC18 devices are 3.3V and 5V compatible (selectable via the supply jumper on the Curiosity HPC board), 5V is the recommended operating voltage for most ISELED applications.
DS50003043B-page 17
2022 Microchip Technology Inc.
FIGURE 2-1:
Hardware
2.1.3 MCU Development Platform Options
2.1.3.1 CURIOSITY HPC AND THE PIC18F25K42 The ISELED Development Platform has
been designed to be used in conjunction with the Curiosity HPC development
board AND the PIC18F25K42 (target MCU). The Curiosity HPC supports both 3.3V
and 5V MCU and ISELED Development Platform operation. For more information
concerning the Curiosity HPC, please refer to the following link:
www.microchip.com/Developmenttools/ProductDetails/DM164136
CURIOSITY HPC
TABLE 2-2: CURIOSITY HPC KEY FEATURES
Number
Item
Description
1
MCU supply voltage selector The Curiosity HPC can supply either 3.3V or 5V to the MCU via a
selectable jumper. For this example, set the jumper to the 5V position.
2
Micro USB connector
Supply main for the development board. Connect the micro USB con-
nector to the PC. Use MPLAB® X IDE to program the target MCU.
3
Target MCU
The ISELED® Development Platform requires the PIC18F25K42-I/SP
(28-pin DIP). Please note that the PIC18F25K42-I/SP is NOT the
default MCU (PIC16F18875) installed on the Curiosity HPC. The
PIC18F25K42-I/SP must be purchased separately and installed prior to
use.
4
mikroBUSTM Add-on Board The MikroElektronika mikroBUS Add-on Standard provides the inter-
standard interface
face between the target MCU and the ISELED Interface/Development
Boards. The ISELED Interface Board should be connected to mikro-
BUS position `1′.
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ISELED® Development Platform User’s Guide
2.1.3.2 ATSAMC21-XPRO AND ATMBUSADAPTER-XPRO
The ISELED Development Platform has been designed to be used in conjunction
with the ATSAMC21-XPRO development board and the ATMBUSADAPTER-XPRO. The
ATSAMC21-XPRO supports both 3.3V and 5V operation; however, it is highly
recommended that the system be configured for 5V. This will avoid the
necessity to include any “non-standard” supply connections between the
ATSAMC21-XPRO and the ATMBUSADAPTER-XPRO.
For more information concerning the ATSAMC21-XPRO and the ATMBUSADAPTER-XPRO,
please refer to the following links:
www.microchip.com/DevelopmentTools/ProductDetails/PartNO/ATSAMC21-XPRO
www.microchip.com/DevelopmentTools/ProductDetails/PartNO/ATMBUSADAPTER-XPRO
FIGURE 2-2:
ATSAMC21-XPRO
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2022 Microchip Technology Inc.
FIGURE 2-3:
ATMBUSADAPTER-XPRO
Hardware
TABLE 2-3: ATSAMC21-XPRO AND ATMBUSADAPTER-XPRO KEY FEATURES
Number
Item
Description
1
MCU Power jumper
Used for current monitoring. Jumper MUST be installed for proper
development board operation.
2
Debug USB interface
Supply main for the development board. Connect the micro USB con-
nector to the PC. Use Atmel Studio to program the target MCU.
3
3.3V/5V supply selector
The ATSAMC21-XPRO supports both 3.3V and 5V operation; however,
(SAMC21)
it is highly recommended that system be configured for 5V. This will
avoid the necessity to include any “non-standard” supply connections
between the ATSAMC21-XPRO and the ATMBUSADAPTER-XPRO to accommodate a 3.3V MCU and a 5V ISELED® Development Board.
4
EXT header (SAMC21)
Connect the ATSAMC21-XPRO EXT1 to the ATMBUS-
ADAPTER-XPRO EXT header.
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ISELED® Development Platform User’s Guide
TABLE 2-3: ATSAMC21-XPRO AND ATMBUSADAPTER-XPRO KEY FEATURES (CONTINUED)
Number
Item
Description
5
EXT header (Adapter)
Supply main for the development board. Connect the micro USB con-
nector to the PC. Use Atmel Studio to program the target MCU.
6
3.3V / 5V supply selector
The ATMBUSADAPTER-XPRO supports both 3.3V and 5V operation,
(Adapter)
however, it does NOT support both voltages simultaneously (without
modification). This voltage is supplied directly by the EXT header which
is connected to the ATSAMC21-XPRO MCU supply voltage. In order to
avoid any “non-standard” supply connections between the
ATSAMC21-XPRO and the ATMBUSADAPTER-XPRO, this jumper
should be set to “5V”.
7
mikroBUSTM Add-on header The ISELED Interface Board is compatible with the MikroElektronika
mikroBUS Add-on Board standard.
2.1.3.3 dsPIC33C CURIOSITY
The ISELED Development Platform has been designed to be used in conjunction
with the dsPIC33C Curiosity development board.
For more information concerning the dsPIC33C Curiosity development board,
please refer to the following link:
www.microchip.com/Developmenttools/ProductDetails/DM330030
FIGURE 2-4:
dsPIC33C® CURIOSITY DEVELOPMENT BOARD
DS50003043B-page 21
2022 Microchip Technology Inc.
Hardware
TABLE 2-4: dsPIC33C® CURIOSITY DEVELOPMENT BOARD KEY FEATURES
Number
Item
Description
1
Input supply selector
5V supply input from EXT Power or USB.
2
Micro-USB connector
Supply main for the development board. Connect the Micro-USB
connector to the PC. Use MPLAB® X IDE to program the target MCU.
3
Target MCU
dsPIC33CK256MP508
4
mikroBUSTM Add-on
The MikroElektronika mikroBUS Add-on Standard provides the inter-
Board standard interface
face between the target MCU and the ISELED® interface/Development
Boards. The ISELED Interface Board should be connected to
mikroBUS position `A’.
2.1.4 ISELED Interface Board
The ISELED Interface Board is compatible with the MikroElektronika mikroBUS
Add-on Board standard (see note below). It functions as the gateway between
the ISELED Smart LED driver and the master MCU. The ISELED Interface Board
contains several level shifters (5V-to-3V and 3V-to-5V) and inverter logic
which allows the ISELED Development Board (presented in a later section) to
operate with numerous Microchip MCUs. Also refer to Table 2-1 ISELED®
Interface Board Use Case Configuration Overview. The ISELED Interface Board is
shown below.
FIGURE 2-5:
ISELED® INTERFACE BOARD (TOP)
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DS50003043B-page 22
ISELED® Development Platform User’s Guide
FIGURE 2-6:
ISELED® INTERFACE BOARD (BOTTOM)
Note: Refer to the Appendix for additional details concerning the MikroElektronika mikroBUS Add-on Board standard.
DS50003043B-page 23
2022 Microchip Technology Inc.
Hardware
TABLE 2-5: ISELED® INTERFACE BOARD KEY FEATURES
Number
Item
Description
1
SPI/UART configuration
Headers J11 and J12 determine the type of communication interface,
headers
SPI or UART, that will be used between the target MCU and the ISELED® devices. Note: Microchip has selected devices that allow
either its SPI or UART to communicate with ISELED.
2
Power supply indicators
The ISELED Interface Board receives both 3.3V and 5V directly from
the mikroBUSTM headers. Two LEDs, LD1 (5V) and LD2 (3.3V), indi-
cate the status of these supplies. An illuminated LED indicates that the
supply is active and present.
3
Alternate ISELED Develop- These connections mirror the connector pins of the ISELED connector
ment Board connections
(J3, bottom side) onto the top side of the board. They can be used to
(socket)
hardwire the ISELED Interface Board to the alternate ISELED Develop-
ment Board connections. These pins are spaced 100mils (2.54mm)
center to center and will require a solder connection between boards.
Note: soldering boards together will greatly increase the mechanical stability between PCBs, especially when multiple ISELED Development Boards are daisy- chained together.
4
Level-shifted/direct-connect The ISELED Development Platform is compatible with both 3.3V and
configuration headers
5V MCUs. Headers J9, J10 and J5 determine the voltage levels of the
SPI/UART signals between the target MCU and the ISELED devices.
Refer to Figure 2-7 and Table 2-1 for more details.
5
Non-inverted/inverted MOSI Header J6 determines the polarity of the MOSI signal between the tar-
header
get MCU and the ISELED Smart LEDs for MCUs with non-configurable
open-drain I/O. This jumper setting is not required for MCUs like the
PIC18F25K42 that have configuration open-drain I/O.
6
ISELED® master node pull-up Pull-up resistors, R2 and R3 (1k ohm), on the SION and SIOP lines for
resistors
the ISELED master node. These resistors are also present and popu-
lated on the APG00113/APG00114 and are redundant if either of these
boards is used with the ISELED Interface Board. The master pull-up
resistors have been included on the ISELED Interface Board so that
end users can connect their own ISELED boards to the ISELED Inter-
face Board/Curiosity HPC development platform.
7
ISELED® Development
Socket style connector, J3. Primary connection between the ISELED
Board connector
Interface Board and the ISELED Development Board.
8
mikroBUS Add-on Board con- Headers J1 and J2. The ISELED Development Platform does not uti-
nectors
lize all mikroBUS Add-on Board signals. Refer to Appendix for connec-
tion and usage details.
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DS50003043B-page 24
ISELED® Development Platform User’s Guide
FIGURE 2-7:
ISELED® CONFIGURATION HEADERS DIAGRAM
DS50003043B-page 25
2022 Microchip Technology Inc.
FIGURE 2-8:
Hardware
2.1.5 ISELED Development Board The ISELED Development Board consists of 10
ISELED Smart LEDs (D1-D10) and an on-board 5V voltage regulator. The ISELED
Development Board (see note below) is presented in the following two figures.
The board includes the key features outlined in the diagrams below.
ISELED® DEVELOPMENT BOARD (TOP)
FIGURE 2-9:
ISELED® DEVELOPMENT BOARD (BOTTOM)
Note: The Osram variant, APG00113, is pictured above (black soldermask). The Dominant variant, APG00114, is also available in white soldermask.
TABLE 2-6: ISELED® DEVELOPMENT BOARD KEY FEATURES
Number 1
Item
Alternate ISELED® board connections (incoming)
Description
These connections mirror the connector pins of the ISELED connector (J1,
bottom side) onto the top side of the board. They can be used to directly wire
the ISELED Development Board to the alternate ISELED Interface Board or the
next development board connections in the series. These pins are spaced 100
mils (2.54 mm) center to center and will require a solder connection between
boards.
2
ISELED Smart LED
Ten ISELED Smart LEDs (D1-D10) reside on the ISELED Development
Board. Each Smart LED consists of one red, green and blue LED which
form a “pixel”, which is then intelligently controlled by the ISELED smart
RGB LED driver.
3
Standoff Hole
Hole for optional standoff to provide supplemental support to the ISELED Development Board. The hole will accommodate an M3 (#4) screw, 0.75″ standoff.
4
Alternate ISELED board con- These connections mirror the connector pins of the ISELED connector
nections (outgoing)
(J2, bottom side) onto the top side of the board. They can be used to
directly wire the ISELED Development Board to the next alternate
ISELED Development Board connections in the series. These pins are
spaced 100 mils (2.54 mm) center to center and will require a solder
connection between boards.
5
ISELED connector (plug)
Plug style connector, J1. Primary connection interface between the
ISELED Development Board and ISELED Interface Board or next
development board in the series.
6
External power jack
J5, max supply voltage 6-12V. Power jack connector – 2.5vmm inner
diameter x 5.5mm outer diameter.
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DS50003043B-page 26
ISELED® Development Platform User’s Guide
TABLE 2-6: ISELED® DEVELOPMENT BOARD KEY FEATURES (CONTINUED)
Number
Item
Description
7
5V supply selector
Header, J3. Switches between the external 5V supply, VEXT_5V, which is sourced by the Curiosity HPC USB (or previous ISELED Development Board if not master ISELED) AND the on-board regulated 5V supply, VREG_5V, which is sourced by external DC power supply, VJACK.
8
On-board 5V regulator
MIC29501-5.0WU, 5V output, 5A max. Supply input from J5 (DC power
jack).
9
ISELED connector (socket) Plug style connector, J2. Primary connection interface between the one
ISELED Development Board and the next ISELED Development Board
in the series.
10
5V supply indicator LED
Supply indicator, LD1. Source – VEXT_5V or VREG_5V as determined
by the state of the 5V Supply Selector, J3. An illuminated LED indicates
that the 5V supply is active.
11
ISELED master pull-up resis- The ISELED master pull-up resistors, R2 and R3, are populated on
tors
each development board. Remove R2 and R3 from all ISELED Devel-
opment Boards in the series other than the master board (1st board in
the chain).
2.1.5.1 5V SUPPLY SELECTOR
TABLE 2-7: ISELED® DEVELOPMENT BOARD SUPPLY OPTIONS
Power Input
Input
External Board Power 5V USB from Curiosity HPC 5V Regulated from previous ISELED® Development Board
DC Power Supply
7V MAX AC/DC converter or DC power supply
Max Current Connector
500 mA
J1
5A
J1
5A
J5
DS50003043B-page 27
2022 Microchip Technology Inc.
Hardware
2.2 HARDWARE CONFIGURATION OPTIONS
The ISELED Development Platform is a highly configurable development tool. It
can be used as a standalone ISELED demonstrator using pre-compiled firmware
examples from Microchip or it can be configured specifically for user
developed hardware and firmware.
2.2.1 Curiosity HPC Controller Board
1. Replace the PIC16F18875 on the Curiosity HPC with the PIC18F25K42 (target
MCU).
2. Set the Curiosity HPC MCU supply jumper to the 5V position. 3. Program the
target MCU with the desired firmware using MPLAB X IDE. 4. Attach the ISELED
Interface Board to the mikroBUS socket #1. 5. Place the nylon screw through
the standoff support hole on the ISELED Devel-
opment Board and attach the 0.75″ nylon standoff to the screw. 6. Connect the
ISELED Development Board plug connector, J1, to the ISELED
Interface Board socket connector, J3. 7. Configure the ISELED Interface Board
jumpers.
– Refer to Section 1.3.1.1 “Default Jumper Settings”. 8. Configure the ISELED
Development Board jumpers.
– Refer to Section 1.3.1.1 “Default Jumper Settings”.
2.2.2 ATSAMC21-XPRO Controller Board
1. Verify that the Power Supply jumper is installed. 2. Set the VCC MCU
supply jumper to 5.0V. 3. Connect the ATSAMC21-XPRO USB connector to the PC.
4. Connect the ATBUSADAPTER-XPRO EXT connector to EXT1 on the
ATSAMC21-XPRO. 5. Program the target MCU with the desired firmware using Atmel
Studio 7. 6. Attach the ISELED Interface Board to the mikroBUS socket on the
ATBUS-
ADAPTER-XPRO. 7. Place the nylon screw through the standoff support hole on
the ISELED Devel-
opment Board and attach the 0.75″ nylon standoff to the screw. 8. Connect the
ISELED Development Board plug connector, J1, to the ISELED
Interface Board socket connector, J3. 9. Configure the ISELED Interface Board
jumpers.
– Refer to Section 1.3.2.1 “Default Jumper Settings”. 10. Configure the ISELED
Development Board jumpers.
– Refer to Section 1.3.2.1 “Default Jumper Settings”.
2.2.3 dsPIC33C Curiosity Controller Board
1. Verify that the Power Supply jumper is installed. 2. Set the power supply
jumper, J11, to +5V USB Power. 3. Connect the dsPIC33C Curiosity USB connector
to the PC. 4. Program the dsPIC33CK256MP508 with the desired firmware using
MPLAB X
IDE. 5. Attach the ISELED Interface Board to the mikroBUS socket A. 6. Place
the nylon screw through the standoff support hole on the ISELED Devel-
opment Board and attach the 0.75″ nylon standoff to the screw.
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DS50003043B-page 28
ISELED® Development Platform User’s Guide
7. Connect the ISELED Development Board plug connector, J1, to the ISELED
Interface Board socket connector, J3.
8. Configure the ISELED Interface Board jumpers. – Refer to Section 1.3.3.1
“Default Jumper Settings”.
9. Configure the ISELED Development Board jumpers. – Refer to Section 1.3.3.1
“Default Jumper Settings”.
DS50003043B-page 29
2022 Microchip Technology Inc.
ISELED® DEVELOPMENT PLATFORM USER’S GUIDE Chapter 3. Software
For details concerning software, please refer to www.microchip.com/iseled for
updates or contact local sales.
2022 Microchip Technology Inc.
DS50003043B-page 30
ISELED® DEVELOPMENT PLATFORM USER’S GUIDE
Chapter 4. Troubleshooting Common Problems
4.1 ISELED SMART LEDS DO NOT ILLUMINATE
4.1.1 Target MCU Firmware Ensure that the target MCU, PIC18F25K42, has been
programmed with the correct firmware.
4.1.2 Jumper Settings Check the ISELED Interface Board jumper placement and
verify that the settings are correct for your configuration – SPI/UART,
LS/DIR, etc.
4.1.3 mikroBUS Socket Verify that the ISELED Interface Board is connected to
mikroBUS socket labeled “1”.
4.1.4 Power Supply
4.1.4.1 EXT CONNECTION If the ISELED Development Board is to receive power
from the Curiosity HPC (or previous ISELED Development Board), verify that a
jumper has been placed onto J4 of the ISELED Interface Board AND the jumper
setting on J3 of the ISELED Development Board is set to VEXT.
4.1.4.2 DC SUPPLY CONNECTION If the ISELED Development Board is receive power
from a DC power supply, verify that the DC supply is connected to J5 AND the
jumper setting on J3 of the ISELED Development Board is set to VREG.
4.1.4.3 INSUFFICIENT POWER SUPPLY The selected supply cannot support the
current load of the string of ISELED Smart LEDs. Increase the current
capability of the power source OR power each ISELED Development Board
separately. To do this, set the jumper across J3 to VREG on each ISELED
Development Board. Attach DC power supplies to J5, the power jack.
2022 Microchip Technology Inc.
DS50003043B-page 31
ISELED® DEVELOPMENT PLATFORM USER’S GUIDE Chapter 5. Appendix
5.1 mikroBUS ADD-ON HEADER 5.1.1 mikroBUS Add-On Header Pinout
FIGURE 5-1:
MIKROBUSTM ADD-ON HEADER PINOUT
Additional details concerning the mikroBUS standard can be found at: www.mikroe.com/mikrobus.
5.1.2 mikroBUS Add-On Board Pin Usage The pin usage is summarized in the table below:
TABLE 5-1:
NC NC NC SCK MISO MOSI 3V3 GND
ISELED® INTERFACE BOARD TO MIKROBUSTM CONNECTIONS Header
J1
J2
NC NC RX
TX NC NC 5V GND
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DS50003043B-page 32
5.2 SCHEMATICS
FIGURE 5-2:
ISELED® INTERFACE BOARD SCHEMATIC
Appendix
2022 Microchip Technology Inc.
DS50003043B-page 33
FIGURE 5-3:
ISELED® DEVELOPMENT BOARD SCHEMATIC
Appendix
2022 Microchip Technology Inc.
DS50003043B-page 34
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DS50003043B-page 35
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