Dialog DA9026 Manual do utilizador - Página 7

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User Guide - Preliminary

Figure 3. Configuration panel interface

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.

DA9026 Evaluation Board

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 4. Sequence colors

CONFIDENTIAL

DA9026-UG04-0705

DA9026

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