Analog Devices ADP8860SHIELD-EVALZ User manual

ADP8860SHIELD-EVALZ/ADP8861SHIELD-EVALZ User Guide

UG-1888

One Technology Way •P. O. Box 9106 •Norwood, MA 02062-9106, U.S.A. •Tel: 781.329.4700 •Fax: 781.461.3113 •www.analog.com

Evaluating the ADP8860/ADP8861 Charge Pump, 7-Channel Smart LED Driver with

I2C Interface

PLEASE SEE THE LAST PAGE FOR AN IMPORTANT

WARNING AND LEGAL TERMS AND CONDITIONS. Rev. 0 | Page 1 of 16

FEATURES

Arduino compatible

Backlight array

Keypad backlight array

Ambient light sensor

Dedicated reset button

Dedicated header for I2C communications

EVALUATION KIT CONTENTS

The ADP8860SHIELD-EVALZ or the ADP8861SHIELD-EVALZ

Connector jumpers

EQUIPMENT NEEDED

Micro USB to USB cable

EV-COG-AD3029LZ and EV-GEAR-EXPANDER1Z

Windows 7 or Windows 10 PC

EV-COG-BLEINTP1Z (optional)

GENERAL DESCRIPTION

The ADP8860SHIELD-EVALZ and the ADP8861SHIELD-EVALZ

incorporate light emitting diodes (LEDs) for quick and easy

evaluation of the ADP8860 and the ADP8861. Note that only the

ADP8860SHIELD-EVALZ has dual light intensity sensors. The

ADP8860SHIELD-EVALZ and the ADP8861SHIELD-EVALZ

follow the form factor of a regular Arduino® shield to allow

compatibility with microcontroller boards that use the same

interface. These evaluation boards also incorporate a separate

header dedicated to I2C communications.

The ADP8860 and the ADP8861 are 7-channel LED drivers

that utilizes a charge pump with selective gain for maximum

efficiency. The LEDs driven by either device are programmable for

maximum current and fade in and out times via the I2C interface.

Only the ADP8860 has a programable light intensity threshold

that can be set via the I2C interface of the device. Each channel

can handle up to 30 mA (typical), except for the seventh channel,

which can handle 60 mA (typical). Each channel can be unified

to have the same fade in time and fade out time, or each channel

can have an individual fade in time and fade out time for

greater flexibility

For full details on the ADP8860 and the ADP8861, see the

ADP8860 and the ADP8861 data sheets, which should be

consulted in conjunction with this user guide when using

these evaluation boards.

UG-1888 ADP8860SHIELD-EVALZ/ADP8861SHIELD-EVALZ User Guide

Rev. 0 | Page 2 of 16

TABLE OF CONTENTS

Features .............................................................................................. 1

Evaluation Kit Contents................................................................... 1

Equipment Needed........................................................................... 1

General Description......................................................................... 1

Revision History ............................................................................... 2

Evaluation Board Functional Block Diagrams and Photograph 3

Evaluation Board Setup ................................................................... 4

Quick Start Procedure ................................................................. 4

Evaluating the ADP8860SHIELD-EVALZ or the

ADP8861SHIELD-EVALZ...............................................................5

Evaluation Summary.....................................................................5

Windows Application ...................................................................5

Android App ..................................................................................7

Evaluation Board Schematics and Layout................................... 12

Ordering Information.................................................................... 15

Bill of Materials........................................................................... 15

REVISION HISTORY

5/2021—Revision 0: Initial Version

ADP8860SHIELD-EVALZ/ADP8861SHIELD-EVALZ User Guide UG-1888

Rev. 0 | Page 3 of 16

EVALUATION BOARD FUNCTIONAL BLOCK DIAGRAMS AND PHOTOGRAPH

WINDOWS PC EV-COG-AD3029LZ WITH

EV-GEAR-EXPANDER1Z

ADP8860SHIELD-EVALZ/

ADP8861SHIELD-E VALZ

Micro USB

25186-030

Figure 1. Functional Block Diagram for Windows PC

25186-031

5V USB

SOURCE

EV-COG-AD3029LZ WITH

EV-GEAR-EXPANDER1Z

ADP8860SHIELD-E VALZ/

ADP8861SHIELD-E VALZ

ANDROID

SMARTPHONE EV-COG-BLEINTP1Z

Figure 2. Functional Block Diagram for Android Smartphones

25186-002

Figure 3. ADP8860SHIELD-EVALZ/ADP88601SHIELD-EVALZ Evaluation Board

UG-1888 ADP8860SHIELD-EVALZ/ADP8861SHIELD-EVALZ User Guide

Rev. 0 | Page 4 of 16

EVALUATION BOARD SETUP

QUICK START PROCEDURE

The ADP8860SHIELD-EVALZ and the ADP8861SHIELD-

EVALZ directly tie the input of the LEDs and the ADP8860 or

the ADP8861 to the power rails of the host board (EV-COG-

AD3029LZ), which eliminates the need for external power

supplies in the evaluation. In addition, this evaluation incorporates

graphical user interfaces (GUIs) for Windows® PC and Android®

smartphones via Bluetooth®.

Based on the schematics (see Figure 25 and Figure 26), the

ADP8860SHIELD-EVALZ and the ADP8861SHIELD-EVALZ

have two LED groups: display backlight and keypad backlight.

The display blacklight LEDs include seven LEDs that can connect

directly to the D1 to D7 pins of the ADP8860 or the ADP8861

via the P5 to P13 headers. The keypad backlight LEDs include

10 LEDs, and each of these LEDs has configurable series resistance.

The keypad backlight LEDs are only tied to the D7 pin of either

chip via the P13 header.

To enable the keypad backlight LEDs for either the

ADP8860SHIELD-EVALZ or the ADP8861SHIELD-EVALZ,

connect a jumper to P14 and between Pin 2 and Pin 3 of P13.

When the keypad backlight LEDs are enabled, these LEDs disable

one of the display backlight LEDs connected to Pin 1 of P13 for

both the ADP8860SHIELD-EVALZ or the ADP8861SHIELD-

EVALZ. The series resistance of each of the keypad backlight

LEDs can be configured via the P15 to P34 headers

For the ADP8860SHIELD-EVALZ, light intensity sensing is

implemented by using two ambient light photosensors, connect

one sensor directly to Pin 18 of the ADP8860 and the other

sensor through the P5 header. Sensing through P5 disables one

of the display backlight LEDs connected to Pin 1 of the header.

To ensure proper operation, use the following sequence to

power up the ADP8860SHIELD-EVALZ or the

ADP8861SHIELD-EVALZ:

1. Connect the ADP8860SHIELD-EVALZ or the

ADP8861SHIELD-EVALZ to the EV-COG-AD3029LZ

via the EV-GEAR-EXPANDER1Z.

2. Connect the EV-COG-AD3029LZ to the PC via the micro

USB to USB cable.

ADP8860SHIELD-EVALZ/ADP8861SHIELD-EVALZ User Guide UG-1888

Rev. 0 | Page 5 of 16

EVALUATING THE ADP8860SHIELD-EVALZ OR THE ADP8861SHIELD-EVALZ

EVALUATION SUMMARY

All required software, such as the CrossCore Serial Flash

Programmer 1.5.0, GUI installers for Windows and Android

devices, and source code (hex file) for the embedded target

are provided on the ADP8860SHIELD-EVALZ and the

ADP8861SHIELD-EVALZ webpages. Before loading any new

firmware to the EV-COG-AD3029LZ, clean and build the target

and connect the EV-COG-AD3029LZ microcontroller to one

of the ports on the Windows PC. Once the source code shown in

Figure 6 loads, reset the EV-COG-AD3029LZ to ensure that the

system, which includes the ADP8860SHIELD-EVALZ or the

ADP8861SHIELD-EVALZ and the EV-COG-AD3029LZ, properly

works. Once the source code is set up, open the GUI application

on the specific machine being used.

Note that flashing the embedded target (EV-COG-AD3029LZ)

can only be done using a Windows machine for this user guide.

WINDOWS APPLICATION

Within the Windows application, users must take the following

firmware, hardware, and GUI steps to evaluate the

ADP8860SHEILD-EVALZ or the ADP8861SHEILD-EVALZ.

Flashing Firmware

To flash the firmware, take the following steps:

1. Open the CrossCore Serial Flash Programmer 1.5.0 app.

If the programmer is not installed, download the installer

from the CrossCore Utilities webpage.

25186-004

Figure 4. CrossCore Serial Flash Windows App

2. Ensure that the EV-COG-AD3029LZ is connected and

select the following parameters (see Figure 5):

a. Target: ADuCM302x

b. Serial Port: (Port where the board is connected)

c. Baudrate: 115200

d. Action: Program

25186-005

Figure 5. CrossCore Serial Flash Programmer Window

3. Under the File to download tab, browse and choose the

source code (hex file) along with the downloaded files

from the ADP8860SHIELD-EVALZ or the

ADP8861SHIELD-EVALZ webpage.

25186-007

Figure 6. Package File Structure

4. Click Start to flash the programmer to the EV-COG-

AD3029LZ.

Hardware

To verify and reset the hardware, take the following steps:

1. Ensure that the GPIO28 pin on the EV-GEAR-

EXPANDER1Z is not connected to GND. Remove

any connection or jumpers if there is any.

25186-008

Figure 7. EV-COG-AD3029LZ with EV-GEAR-EXPANDER1Z Top View

2. Do a hardware reset on the ADP8860SHEILD-EVALZ

or the ADP8861SHEILD-EVALZ and the EV-COG-

AD3029LZ to reboot the flashing firmware.

UG-1888 ADP8860SHIELD-EVALZ/ADP8861SHIELD-EVALZ User Guide

Rev. 0 | Page 6 of 16

GUI

To connect the ADP8860SHIELD-EVALZ or the

ADP8861SHIELD-EVALZ to Windows, take the following

steps:

1. Run and install the ADP886X_LDTA_v2.0.0_Installer.exe

file, which can be downloaded from the ADP8860SHIELD-

EVALZ or the ADP8861SHIELD-EVALZ webpage.

2. After the installation completes, run the

ADP886X_Release_v2.0.0.exe file that was installed during

Step 1 to open the GUI window.

3. Click Connect. UART connect settings then prompt the

user on the COM port (see Figure 8).

Note that the default baud rate is 115200.

Once UART connection is established, this automatically

activates the ADP8860 or the ADP8861 device and reads

what type of the device is connected. Users can use the

four main functionalities: backlight, sink, interrupt, and

ambient light sensing for the ADP8860, while the ADP8861

has no ambient light sensing.

25186-009

Figure 8. Configure the COM Port

4. In the BACKLIGHT main tab for Windows, users can

select the BRIGHTNESS LEVEL and type of BACKLIGHT

LAW (see Figure 9). Under the Bright tab within this main

tab, users can configure the maximum current for Day Bright,

Office Bright, Dark Bright, and Off Timeout Bright.

25186-010

Figure 9. BACKLIGHT Main Tab for Windows

5. Under the Dim tab within the BACKLIGHT main tab for

Windows, users can configure the dim current for Day

Dim, Office Dim, Dark Dim, and Off Timeout Dim (see

Figure 10).

25186-011

Figure 10. BACKLIGHT Dim Tab for Windows

6. Under the Fade Override tab within the BACKLIGHT

main tab for Windows, users can configure the Fade In

and Fade Out (see Figure 11).

25186-012

Figure 11. BACKLIGHT Fade Tab for Windows

7. Under the SINK main tab for Windows, users can select

sink independently and configure Sink Law, Current, ON

Time, OFF Time, Fade In, and Fade Out (see Figure 12).

25186-013

Figure 12. SINK Tab for Windows

8. In the Interrupt main tab for Windows, users can enable

device protection as well as clear interrupts when triggered

(see Figure 13).

25186-014

Figure 13. INTERRUPT Tab for Windows

ADP8860SHIELD-EVALZ/ADP8861SHIELD-EVALZ User Guide UG-1888

Rev. 0 | Page 7 of 16

9. In the A.L.S. main tab for Windows, users can enable the

photosensor and comparator with a threshold and hysteresis

current configuration (see Figure 14). Note that this feature

is only available for the ADP8860. To utilize the secondary

photo sensor, move P5 to the other position (see Figure 25

and Figure 26).

25186-015

Figure 14. Ambient Light Sensing (A.L.S.) Tab for Windows

10. Click Switch in Windows to enable the read and write of

the registers directly (see Figure 15).

25186-016

Figure 15. Generic Read and Write (GENERIC R/W) for Windows

11. Note that all processes are logged in the LOGs box in

Windows. Every log contains the time and date with the

log category (INFO, DEBUG, and ERROR) and messages

(see Figure 16). A Clear Logs options is also available.

25186-017

Figure 16. LOGS Box for Windows

ANDROID APP

Users must take the following flashing firmware, hardware, and

Android app steps to connect the ADP8860SHEILD-EVALZ or

the ADP8861SHEILD-EVALZ to the Android app.

Flashing Firmware (Windows Only)

To flash the firmware, take the following steps:

1. Open the CrossCore Serial Flash Programmer 1.5.0 app

(see Figure 4). If the programmer is not installed, download

the installer from the CrossCore Utilities webpage.

2. Ensure that the EV-COG-AD3029LZ is connected and

select the following parameters (see Figure 5):

a. Target: ADuCM302x

b. Serial Port: (Port where the board is connected)

c. Baudrate: 115200

d. Action: Program

3. Under the File to download tab, browse and choose

the source code (hex file) along with the downloaded

files from the ADP8860SHIELD-EVALZ or the

ADP8861SHIELD-EVALZ webpage.

4. Click Start to flash the programmer to the EV-COG-

AD3029LZ.

Hardware

To connect and reset the hardware, take the following steps:

1. Connect the EV-COG-BLEINTP1Z to EV-COG-AD3029LZ

via the Hirose connector.

2. Connect the GPIO28 pin of the EV-GEAR-EXPANDER1Z

to GND (see Figure 7).

3. Do a hardware reset on the ADP8860SHEILD-EVALZ or

the ADP8861SHEILD-EVALZ and the EV-COG-AD3029LZ

to reboot the flashing firmware.

UG-1888 ADP8860SHIELD-EVALZ/ADP8861SHIELD-EVALZ User Guide

Rev. 0 | Page 8 of 16

Android App

To use the Android app, take the following steps:

1. Install the ADP886X_LDTA_v2.0.0.apk file, which can

be downloaded from the ADP8860SHIELD-EVALZ or

the ADP8861SHIELD-EVALZ webpage) on an Android

smartphone that has Bluetooth 4.3 or higher.

2. After installation completes, run the ADP886X LED

DRIVER TEST APP (see Figure 17).

25186-018

Figure 17. Title Page for the Android App

3. Click START and navigate to the side menu.

25186-019

Figure 18. Side Menu for the Android App

4. Click CONNECT and turn on the Bluetooth and Location

of the mobile devices, which then prompts Step 5.

ADP8860SHIELD-EVALZ/ADP8861SHIELD-EVALZ User Guide UG-1888

Rev. 0 | Page 9 of 16

5. Scan for the ADP886X Demo and reset on the

ADP8860SHEILD-EVALZ or the ADP8861SHEILD-

EVALZ and the EV-COG-AD3029LZ if none have

scanned.

25186-020

Figure 19. Device Scanning for the Android App

Once a Bluetooth connection is established, the ADP8860

or ADP8861 automatically activates and reads the device

type. Users can use four main functionals: backlight, sink,

interrupt, and ambient light sensing for the ADP8860,

while the ADP8861 has no ambient light sensing.

6. In the BACKLIGHT tab, users can select the following

(see Figure 20):

a. Brightness level and type of law

b. Maximum current for Day, Office, Dark, and

Off Timeout

c. Dim current for Day, Office, Dark, and

Dim Timeout

d. Fade In and Fade Out

25186-021

Figure 20. BACKLIGHT Tab for the Android App

UG-1888 ADP8860SHIELD-EVALZ/ADP8861SHIELD-EVALZ User Guide

Rev. 0 | Page 10 of 16

7. In the Sink main tab, users can select sink independently

and can configure sink Law, Current, On Time, Off Time,

Fade In, and Fade Out (see Figure 21).

25186-022

Figure 21. Sink Tab for the Android App

8. In the Interrupt main tab, users can enable device protection

as well as clearing interrupts when triggered (see Figure 22).

25186-023

Figure 22. Interrupt Tab for the Android App

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