# AVR32 - LCDC Driver - Moving Bitmap Documentation

## Introduction

This is the documentation for the data structures, functions, variables, defines, enums, and typedefs in the software for application note AVR32114. It also describes the usage of the example applictions for the LCD controller.

## Compilation Info

This software was written for the GNU GCC for AVR32 and IAR Systems compiler for AVR32. Other compilers may or may not work.

## Device Info

All AVR32 devices with a LCDC module can be used. This example has been tested with the following setup:

- STK1000 development kit
- AP7000 top board for STK1000 development kit
- LCD LTV350QV mounted on the STK1000

CPU speed 40 MHz

This example shows the use of the 2D addressing mode on the LCD controller. It uses the TFT display on the STK1000 to show a part of the "virtual" framebuffer. The virtual frame buffer (640*480) is four times the size of the LCD viewing area (320*240). A bitmap picture (320*240) will read from the flash, enlarged by four and then written to the framebuffer. So you will only see a part of the picture on the screen. This viewing area can be moved around the "virtual" framebuffer with switches on the STK1000.

Before you run this application program the picture (AVR32.bmp) must be written into the flash at address 0x00400000. Use the avr32program application for this purpose. avr32program program -F bin -O 0x00400000 -evfcfi@0 AVR32.bmp If you intend to program the picture to another location change the define BITMAP_FILE_ADDRESS accordingly in the source. Feel free to use your own bitmap file.

The input (switches) header marked J25, used for moving around the virtual frame buffer, must be connected to the header labeled J1 (PORTB[0..7]).

To move the viewing area use following switches: Switch0: Move viewing area 10 pixels to the right Switch1: Move viewing area 10 pixels to the left Switch2: Move viewing area 10 lines up Switch3: Move viewing area 10 lines down

- SRC = lcdc_moving_bitmap_example.c

## Contact Info

For more info about Atmel AVR32 visit Atmel AVR32
AVR32 Application Notes
Support mail: avr32@atmel.com