Dialog DA9026 User Manual - Page 10

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User Guide - Preliminary

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.

Func-

Description (all data is in hex format)

tion

Status

Gives the status of the last read/write to the

I2C bus (see Appendix E for code values)

Slave

The Slave write address for the required I2C

Ad-

device (8 bits)

dress

Regis-

The register to send/read data to/from

ter

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

Read the contents of all the registers of the

OUT

specified I2C device and write to a file

Table 3. I2C direct commands

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,

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

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

Figure 15.

after being activated.

File handling

DA9026 Evaluation Board

Func-

tion

Save

Panel

Load

Panel

Reset

Panel

Load

ASIC

Table 4. File handling routines

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

Register Value Options

The 'Display Register Values' button, gives a tabular listing

of the register values based on the contents displayed on

Figure 14.

I2C

the panel. It does NOT retrieve register data from the

direct commands

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

Figure 16.

Sound options

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

e.g.DA9026_Memory-

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

the typedefs are

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.

CONFIDENTIAL

Description

Save the current values of the configuration

panel to a file

Load the contents of a previously saved

configuration panel

Reset the panel to the default (DA9026)

settings

Download all the current panel values to the

DA9026 device

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

modify

sequences to get a first timing

approximation.

Changes

DEMO1T.txt

and

DEMO1T.wav

DA9026-UG04-0705

DA9026

the

light

the

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