Dialog DA9026 Manuale utente

DA9026-UG03-0705

CONFIDENTIAL

DA9026 Evaluation Board

User Guide - Preliminary DA9026

CONFIDENTIAL

The DA9026 Evaluation Board has been

produced to demonstrate an integrated

solution meeting the needs of LED ‘lightshow’,

solutions in cellular phones and other

consumer applications.

The evaluation board enables users to view

existing LED light sequences and to be able to

generate new sequences to explore the

possibilities of the DA9026 device.

The evaluation PCB is supplied together with

a CD ROM containing documentation and

driver files.

The driver software uses a simple graphical

interface, allowing the DA9026 to be

controlled via the USB port of a PC.

This document describes the hardware and

software used by Dialog Semiconductor to

test and evaluate the DA9026 lightshow

processor.

The hardware solution is based upon PCB

numbered 44-179-62-03-A.

The software uses a PC operating Windows

98/ME/2000/XP with a USB1.1 or USB2

interface.

The DA9026 device plus the USB interface

consume approximately 120mA in the standby

state, and up to 200mA in the active state.

The USB cable must therefore be plugged

directly into a capable USB port. It is not

guaranteed to operate in a hub. (See the

section on power supplies).

The main software interface provides a

straightforward demonstration panel, but an

alternative interface allows control of all the

DA9026 registers, whilst providing a user-

friendly interface to configure additional

demonstrations.

SETUP AND USING THE DA9026 LIGHTSHOW

PROCESSOR EVALUATION BOARD

The DA9026 lightshow processor evaluation board

Summary

DA9026 Evaluation Board

User Guide - Preliminary DA9026

Contents

NOTICES .................................................................................................................... 3

SUMMARY ................................................................................................................. 4

HARDWARE

POWER SUPPLIES

LED SUPPLIES

DESCRIPTION OF LED DEMO.................................................................................. 5

SOFTWARE................................................................................................................ 6

INSTALLATION .................................................................................................. 6

DEMONSTRATION PANEL ............................................................................... 6

CONFIGURATION PANEL................................................................................. 6

SEQUENCE COLORS ....................................................................................... 7

DURATION & FADE PARAMETERS ................................................................. 8

SEQUENCE ORDER SELECTION .................................................................... 8

TIMING PARAMETERS ..................................................................................... 9

BRIGHTNESS CORRECTION PARAMETERS.................................................. 9

CONTROL PARAMETERS ................................................................................ 9

I2C DIRECT COMMANDS ............................................................................... 10

FILE HANDLING............................................................................................... 10

SOUND OPTIONS............................................................................................ 10

EXIT.................................................................................................................. 10

TROUBLESHOOTING.............................................................................................. 11

SOFTWARE ISSUES

HARDWARE ISSUES

APPENDIX A — I2C REGISTER TEXT FILE............................................................ 12

APPENDIC B — PANEL DATA TEXT FILE.............................................................. 13

APPENDIC C — RECORDING SOUND EXTRACTS............................................... 14

APPENDIX D — USB READ/WRITE RETURN STATUS VALUES .......................... 15

DA9026 Evaluation Board

User Guide - Preliminary DA9026

Notices

Dialog Semiconductor provides this evaluation board (the

“product”) for engineering evaluation purposes ONLY. Its

design is intended for laboratory evaluation only and it is not

considered suitable for other commercial applications.

Resale by third parties of this product, its design or its

associated documentation is prohibited.

This product contains static sensitive devices and care

should be taken that it is handled appropriately to avoid

damage from electrostatic discharge. As a prototype the

product has not been subject to any regulatory approval

(CE, FCC, etc) and may not meet the technical

requirements from such bodies for electromagnetic

compatibility. The user assumes responsibilities for the safe

handling and subsequent disposal of the product.

Whilst care has been taken in the design of the product,

Dialog Semiconductor assumes no liability from the user for

any indirect, incidental or consequential damages resulting

from use of the product or from applications assistance

given in support of the product.

Before using the product we recommend that the user reads

both the guide and the product datasheet to familiarise

themselves with the operation of the product.

Maximum supply voltages for this product are defined within

this guide; operation outside these voltages may result in

permanent damage to the product.

Applying loads outside the range specified in this guide or

the product datasheet may also result in permanent

damage. It is possible that during operation with high load

currents or voltages being applied, some components may

operate at an elevated temperature. Care should be

exercised when touching components on the board in such

circumstances.

Dialog Semiconductor reserves the right to alter without

notice the specification, design, price or condition of sale of

this product.

Should the user be uncertain regarding any aspect of the

product, please contact a Dialog Semiconductor

representative at one of the locations noted on the last page

of this guide.

DA9026 Evaluation Board

User Guide - Preliminary DA9026

Hardware

The DA9026 Lightshow Processor Evaluation Board

comprises the DA9026 device, a USB-I2C bridge for

communication with the device, a 2.5V core voltage

regulator, a 4.0V regulator to power the device from the

USB 5V supply, and a set of six full color LEDs.

The DA9026 device contains a 5V DCDC converter, but it

has not been used in the simple evaluation module.

There are only four connections from the USB interface to

the PCB; +5V, GND, I2C Clock, I2C Data.

Power supplies

The Evaluation Board is designed to operate from an

external power source in the range 2.7V to 4.0V. The

current taken from the supply will depend upon the number

of LEDs energized.

In the standby state, the USB interface module will

consume about 120mA. A typical pattern will consume

about 150mA form the USB bus.

Vcore regulator

The DA9026 device uses a digital power supply voltage of

2.5V supplied externally.

The LED currents are relative to this supply.

The Evaluation Board includes a fixed 2.5V linear regulator.

LED supplies

In order to minimize power dissipation, it is desirable to

operate the LEDs with as low a cathode voltage as

possible. The current sink outputs IB1-6 require a voltage of

approximately 0.6V to maintain accurate current.

Any voltage above this represents wasted power.

The minimum voltage at the cathode of the colored LEDs is

therefore VF(max)+0.6V.

Figure 1. The DA9026 lightshow processor evaluation board

DA9026 Evaluation Board

User Guide - Preliminary DA9026

Parameter Symbol Typ. Conditions

Luminous Intensity R 100 mcd @20mA

G 180 mcd@20mA

B 50 mcd@20mA

Forward Voltage R 2.0 V@20mA

G 3.3 V@20mA

B 3.3 V@20mA

Forward Current R 25 mA

G 25 mA

B 25 mA

Peak Forward Current

(Duty 1/10@1kHz)

R 60 mA

G 100 mA

B 100 mA

Description of LED demo

This is an arrangement of six full-color LEDs arranged in a

25mm circle under an acrylic diffuser. This can be removed

if desired, but will require some dexterity to refit.

The LEDs are single chip devices containing individual Red,

Green and Blue LEDs with individual cathode and anodes,

and are manufactured by Everlight Electronics Co., Ltd with

part number 19-337-R6GHBHC-A01-2T

(www.everlight.com/pdf/19-337-R6GHBHC-A01-2T.pdf)

Table 1 Abbreviated full color LED specification

DA9026 Evaluation Board

User Guide - Preliminary DA9026

Software

Installation

Insert the CD containing the software. If the installation

does not start automatically, run the program ‘setup.exe’

from the CD containing the software. (This will be found in

the directory ‘Software’ on the CD). An automated script will

install the program on your PC. By default, the directory

C:\ProgramFiles\Dialog Semiconductor\Power

Management\DA9026 will be used. The sample

demonstration files will be placed in the same directory.

Plug in the USB cable, and Windows will detect the USB

device. It will prompt for the drivers, which should be

automatically located on the root directory of the CD The

setup file is Dlgezusb.inf. If Windows suggests that this is

not the driver of this device, please run the program

USB_ID that will be found in the root directory of the CD.

If you are using Windows XP, you may get a message

saying that a USB2 device is attached to a USB1.1 port.

This can safely be ignored.

To uninstall the software please use the Windows ‘Add/

Remove Programs’ function that can be found under ‘Start’-

>’Settings’->’Control Panel’.

Demonstration Panel

Run the DA9026 program by clicking the shortcut on the

appropriate item in the Start menu. The best setting for the

PC display size is 1024x768 pixels, but the default setting is

800*600. The standard Windows option is available to the

user to resize the panel to fill the current screen. It is

important to note that a display size other than the

recommended setting may affect the way in which the

panels appear.

With this ‘Demonstration Panel’ the user is provided with the

option of running one of the demonstrations. Up to 20 pre-

configured demo-files may be available, with names of the

form: DEMO1A.txt, DEMO1B.txt, … DEMO1T.txt. These

demonstration files can be easily changed to different files,

with the format as described in Appendix B.

Select a demo-file from the drop down menu, and then load

and start the DA9026 demonstration by left-clicking the

appropriate demonstration name. This demonstration will

then run continuously, or until an alternative demonstration

is started, or it is stopped.

To change to a different demo-file, just select a new file

from the drop-down menu, and start the demonstration as

before.

The program has an option to play a ‘.wav’ file at the same

time as the demonstration. This is quite simply achieved

within the program by checking for the existence of a

corresponding ‘.wav’ file to the ‘.txt’ file; i.e for DEMO1N.txt,

the corresponding ‘.wav. file would be DEMO1N.wav. If the

file exists, then it is played at the same time as the

‘lightshow’. To aid the user, a ‘Sound Icon’ is displayed

adjacent to the drop down menu if a corresponding sound

file does in fact exist.

The demonstration examples are designed to run

continuously, so there a command button is provided to

‘stop the current demonstration’, should this be necessary.

On this panel there is also the option of viewing the DA9026

button. These are the values stored in the program that

have been downloaded to the DA9026 device, rather than

the retrieved values from the device.

The command button ‘Exit Program’ ends the DA9026

program.

Configuration Panel

In addition to the Demonstration Panel, a Configuration

Panel is available which will enable the user to have

complete control over all the registers and modes of the

DA9026 device. This can be seen in figure 3.

The components of the configuration panel are:

• Sequence Colors

• Duration & Fade Parameters

• Sequence Order Selection

• Timing Parameters

• Brightness Correction Parameters

• Control Parameters

• (Auto Shutdown/ DCDC Control/Looping

Control/ Start/ Stop/Shutdown)

• I2C direct commands

• File handling

• Register Value options

• Sound options

• Exit

Figure 2. Demonstration panel interface

DA9026 Evaluation Board

User Guide - Preliminary DA9026

The first block of the these components enable the user to

develop a demonstration directly by choosing colours, time

values etc, and the software handles the interface to the

DA9026 device, ensuring the correct registers are loaded

for the values selected. For a complete list of registers,

please see the Product Data Sheet.

The I2C direct command block enables the user to read and

write registers directly from and to the DA9026 device. This,

of course, requires a deeper understanding of the DA9026

device and it’s registers, but enables direct communication

with the device itself. This block also allows the user to

communicate with any other I2C devices which may be

connected to the same bus.

All of the components are controlled in a similar fashion,

with the left button in general being used to set values, and

the right button being used to give help about the selected

function. One major difference is with the ‘Sequence

Colors’, ‘Duration & Fade Parameters’ and ‘Sequence

Order Selection’ sections where the right button is a ‘hot-

key’ to short cut options to populate those portions of the

panel. These options will be described below.

Sequence Colors

The Sequence Colors section of the panel is shown in figure

4, for a given configuration.

This section of the panel enables the user to select the

required colours for the different LEDs, but the interpretation

of the data is different for the different demonstrations.

In order to achieve the required colour on tri-colored LEDs,

the color values displayed on the panel need to be modified

to take into account the variations in the performance of the

different colored LEDs. This is achieved using the

‘Brightness Correction Parameters’.

Figure 3. Configuration panel interface

Figure 4. Sequence colors

DA9026 Evaluation Board

User Guide - Preliminary DA9026

For all demonstrations, the following holds true:

i) up to fifteen different sequences may be programmed

Ii) the colors of individual numbered cells may be set in

either of two ways:

• a left click on a numbered cell will enable the user to

set the colour value for that cell. In general the color

can be set either by adjusting ‘slider’ controls to

specify the individual Red, Green or Blue

component or by selecting a specific colour from a

palette.

The DA9026 device uses 4 bits to store the color values,

and so the range for the ‘slider’ values are 0x0 – 0xF.

However, with selection of colors from the general

(standard) palette, the full range of 0x00 – 0xFF for each

color is used, but these are automatically converted to the

correct range for use within the software.

A right click will enable to following short cuts to be used:

• Set Cell to WHITE

• Set Cell to BLACK

• Fill ROW to RIGHT (from current cell)

• Fill COLUMN DOWN (from current cell)

• Copy current cell (copy current cell to a buffer)

• Paste saved cell (paste cell in buffer to current cell)

• Fill DIAGONAL UP*

• Fill DIAGONAL DOWN*

* from the current cell up/down, repeating from bottom/top when the

top/bottom is

reached

Duration & Fade Parameters

These parameters are controlled using the following section

of the panel, and are loaded directly into the appropriate

Duration sets the length of time the particular sequence will

run. Within the DA9026 device, this is multiplied by the

‘Switching Time’ (see Timing Parameters).

The ‘Fade Mode’ indicates the fade time when changing to

the selected sequence; the ranges of values is [0, 2, 4, 8,

16, 32, 64, 128] , and again is multiplied by the ‘Switching

Time’ by the DA9026 device.

Both of these controls have a right button ‘hot-key’ to aid

completion of the table, the main feature being able to fill to

the end of the table from the current position with the

current value.

Sequence Order Selection

The parameter settings described above are used for

setting values for up to 15 different sequences. The

sequence order selection panel enables the user to choose

the order in which the specified sequences are displayed.

The sequence numbers can be in any order; and they can

be repeated. The only requirement is that the sequence

(whatever it’s length) is terminated by a zero. Consequently

a total of 15 sequences may be chosen from those defined

as per the previous section to achieve the desired effect.

(Note: where possible, the software will guide the user in

the termination of the sequence). This section of the panel

is shown in figure 9.

A drop down menu is provided with this section of the panel

to aid the user in setting the values. This can be seen in

figure 10, and the options available are:

Figure 5. Set color values panel (general)

Figure 6. Drop down

menu for color value

setting

Figure 7. Set color values panel (demo 3 only)

Figure 8. Drop down menu for duration & fade parameters

Figure 9. Sequence order selection parameters

Figure 10. Drop down menu for sequence order selection

DA9026 Evaluation Board

User Guide - Preliminary DA9026

• Fill the order with ascending numbers, from the

current position

• Reset the whole order to all zeros.

• Help – a brief description

• Quit – no action

Timing Parameters

The parameters in this panel control the timing parameters

for the DA9026 module.

The Switching Time parameter controls the basic switching

time within the DA9026 device - i.e. it controls the switching

frequency which underlies the basic concept of the device.

5 bits are used to store this information and values are in

the range 7us to 2000us.

The Base Duration Time takes one of the following values

[1ms, 2ms, 5ms, 10ms, 20ms, 32ms, 50ms, 100ms] and

controls the base time unit, which is the unit for the Duration

time and the Fade time.

Brightness Correction Parameters

The Brightness Correction Parameters enable the relative

brightness of tri-colored LEDs to be balanced. This is

necessary since the LEDs all have different characteristics

and setting all three colour components to the same values

does not produce a white display. The correct colour

balance may be achieved by careful modification of these

values. For the current tri-colored LEDs in use for the

Lightshow demo, the values in use are: 22, 15, 31

Control Parameters

This section of the panel controls the use of the Auto

Shutdown, DCDC usage, Loop control and Start/Stop and

Device Shutdown parameters. The section of the control

panel is as follows:

A description of the options is given in Table 2.

Control

Parameter

Description Values Reg 0x0E

Control bit

Reg 0x0D

Auto Shutdown Controls automatically shut down to

‘Idle Mode’

0 = auto shutdown

1 = DA9026 always on

3 -

DCDC Control Controls the DCDC

* keep permanently ON

* keep permanently OFF

* use automatic switching ON/OFF

dcdc_off dcdc_on

0 1

1 0

0 0

2 1 -

Looping Control Controls the number of loops that the

sequences will be run

0 = continuously

1 – 255 otherwise

- Full eight bits

Start/ Stop Controls Starting/Stopping a pattern 0 = stop

1 = start

0 -

Shut Down Immediate shutdown of the DA9026

device into power save mode

0 = normal mode

1 = shutdown

8 -

Table 2. Control parameters

Figure 11. Timing parameters

Figure 12. Brightness correction parameters

Figure 13. Control parameters

DA9026 Evaluation Board

User Guide - Preliminary DA9026

I2C Direct Commands

This section of the panel represents the most powerful sec-

tion of the interface to the DA9026 device. It enables the

user to have total control over the registers of the module, in

being able to set values and read values, but it also enables

other I2C devices on the same bus to be accessed by

changing the I2C address.

The panel section is as follows:

The elements of this section are given in table 3 below.

The format of the register data stored in a file is given in

Appendix A.

Two files are produced: a text file with the suffice .txt, in a

format described in Appendix A; and a source file with the

suffice .src. This is in a format that can be pasted in a C/

C++ development system, e.g.DA9026_Memory-

>SEQ_LED[1].SEQ_DUR=0x28; where the typedefs are

provided by Dialog on the CD.

File Handling

In order to minimize the amount of data

re-entering, some file handling and basic

functions are supported.

Note: the ‘Load ASIC’ control is colored red

when I2C data is sent directly to the device

and the displayed panel data does not

therefore reflect the current status of the

DA9026 device. It returns to its normal color

after being activated.

The format of the saved panel data is given in Appendix B.

The ‘Display Register Values’ button, gives a tabular listing

of the register values based on the contents displayed on

the panel. It does NOT retrieve register data from the

DA9026 device. There is also a control: ‘register value’

debugging’ which display all the register values for the

various parameters as an aid when working directly with the

I2C interface.

Sound Options

An additional feature is the ability to play .wav files

alongside a light show demonstration. These greatly

enhance the demonstration if the light and audio are

reasonably well in sync. To be able to generate such a

combination, a section of the panel enables .wav files to be

played whilst modifying the light sequences, and also to

enable the light and audio to start together. Both these

options have been found to be required to facilitate the

correct combination.

The first option, ‘Play .WAV’ enables

the user to select a .wav file and play

it. Whilst this is being played it is

possible to modify the light

sequences to get a first timing

approximation. Changes to the

duration of a sequences are transmitted instantly to the

DA9026 module and so the results of modifications are

visible immediately.

The second option ‘Start Light & Sound’ starts the current

light sequence and the currently selected .wav at the same

time to enable the fine tuning of the timing to be completed.

On completion of a satisfactory combination of light and

audio, it is possible to add them into the standard

demonstration by naming the appropriate files (e.g.):

DEMO1T.txt

and

DEMO1T.wav

And they can then be used from the demonstration panel

(although the DA9026 program will need to be restarted for

the new files name to appear in the drop-down menus). It is

possible to capture any sound file that can be played on a

PC for use with this option. Appendix C gives further details.

Exit

The ‘Exit Program’ button closes the DA9026 program.

Func-

tion

Description (all data is in hex format)

Status Gives the status of the last read/write to the

I2C bus (see Appendix E for code values)

Slave

Ad-

dress

The Slave write address for the required I2C

device (8 bits)

Regis-

ter

The register to send/read data to/from

Send Send the specified data to the current register

of the current device

Read Read the contents of the specified register of

the current device and display it

File IN Read and load a file of I2C data to the speci-

fied device

File

OUT

Read the contents of all the registers of the

specified I2C device and write to a file

Figure 14. I2C

direct commands

Func-

tion

Description

Save

Panel

Save the current values of the configuration

panel to a file

Load

Panel

Load the contents of a previously saved

configuration panel

Reset

Panel

Reset the panel to the default (DA9026)

settings

Load

ASIC

Download all the current panel values to the

DA9026 device

Table 3. I2C direct commands

Figure 15.

File handling

Table 4. File handling routines

Figure 16.

Sound options

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