Graphics Library
Application Note
AN2356
Graphics Library for OSRAM’s OLED Displays
Author: Valeriy Kyrynyuk Associated Project: Yes As...
Description
Application Note
AN2356
Graphics Library for OSRAM’s OLED Displays
Author: Valeriy Kyrynyuk Associated Project: Yes Associated Part Family: All PSoC Designer Version: 4.2 Associated Application Notes: AN2348
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Abstract
This Application Note describes a graphics library for OLED display operation. Library functions include drawing, text, and bitmap operations.
Introduction
Modern designs often require a low-cost and high quality graphical display. OLED (organic light emitting diode) displays by OSRAM Opto Semiconductors (http://www.pictiva.com) meet these requirements and are the preferred displays for users and designers. This Application Note describes a library of functions to interface with a display that has a resolution of 96 x 48 pixels.
OLED Review
OSRAM OLED displays have the following characteristics:
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Consider the display process in detail. An OLED display is a memory-mapped device. Four bits are necessary to display one pixel, because an OLED display has 16 brightness levels of one basic color; a single byte can hold information for two pixels. The columns and rows of the display can serve as the X and Y axes, respectively. One byte in video memory represents two pixels in the X direction. Therefore, to simplify algorithms for the display of images, the X coordinates of function arguments are assigned as one half of the real pixel position in its row. The pixel representation in a video memory byte is shown in Figure 1.
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