EPM-880 Application Notes

<parsererror style="display: block; white-space: pre; border: 2px solid #c77; padding: 0 1em 0 1em; margin: 1em; background-color: #fdd; color: black">

This page contains the following errors:

error on line 13 at column 319: Opening and ending tag mismatch: epd line 0 and color

Below is a rendering of the page up to the first error.

</parsererror>= EPD-320 Application guide = This application provide user a way that image full update and carousel mode for EPD-320 panel display. user configure xml file follow setting rule. == Components LIST == {| border="2" cellspacing="1" cellpadding="1" style="width: 164px;" |- ! Item | style="width: 122px;" |  Description |- | 1 | style="width: 122px;" |  32” EPAPER |- | 2 | style="width: 122px;" |  EPD-320 PCBA
|- | 3 | style="width: 122px;" |  cable |} [[File:Epd320 1.jpg|600px|RTENOTITLE]] == SYSTEM ARCHITECURE == [[File:EPD320 2.jpg|400px|system diagram]] == System support == We has been tested on host operating system as below #ubuntu 18.04 #windows(windows 10) == Waveform mode == There are six Waveform mode for image update and short name as below table. The mode parameter will use in update command. {| border="2" cellspacing="1" cellpadding="1" style="width: 50%;" |- | align="center" | mode 0 | align="center" | mode 1 | align="center" | mode 2 | align="center" | mode 3 | align="center" | mode 4 | align="center" | mode 5 |- | align="center" | INIT | align="center" | DU | align="center" | GC16 | align="center" | GCC16 | align="center" | A2 | align="center" | GL16 |} INIT(Global update WF) : ::::Initialize is used to completely clear the display, if it's left in an unknown state (i.e. if the previous image has been lost by a re-boot) DU(Local update WF) : ::::Direct update Non-flashing waveform that can be used to update. it can update any changed graytone pixel to black or white only. GC16(Global update WF) : ::::Grayscale clear, 16 levels A "flashy" waveform used for 16 level grayscale images. All the pixels are updated or cleared GCC16( Global clear update WF) : ::::Grayscale Clear, 16 Levels A "more flashy" waveform used for 16 level grayscale images. All the pixels are updated or cleared. ::::This provides the best image appearance. A2(Local update WF) : ::::animation, 2 Levels is a non-flashing waveform that can be used for fast updates and simple animation. ::::This wave form support black & white updates only. ::::image quality and ghosting is reduced in exchange for the response time. GL16(Local update WF when white to white , Global update when 16 gray levels) : ::::The GL16 waveform is used to update anti-aliased text with reduced flash. GL16 should bed used only with Full Display Update.. ::::The entire display except pixels staying in white will update as the new image is written. The GL16 waveform has 16 unique gray levels. == Push image application == === Hardware prepare === 1. Connected EPD FPC to mainboard 2. Connected micro USB cable to mainboard USB2(CN2) , usb port connect to computer usb port which installed windows or linux ubuntu 3. Connected 12V power cable to mainboard. [[File:Epd320 4.jpg|500px|system diagram2]] === Software prepare === ==== Windows ==== 1. Download usb driver tool zadig usb tool 2. Execute zadig.exe and click Option->List All Devices 3. ITE T-CON appeared in list and click Replace Driver button , waiting installation until success [[File:Epd320 3.jpg|500px|driver install]] 4.Repeat step 3 replace others ITE T-CON driver. ==== Linux ==== User must install library as below 1. Installed libusb 1.0.0

sudo apt-get install libusb-1.0-0-dev

2. Refresh system

$ sudo apt-get update
$ sudo apt-get upgrade

Installed OpenCV dependency package

$ sudo apt-get install build-essential cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev
$ sudo apt-get install python3.5-dev python3-numpy libtbb2 libtbb-dev
$ sudo apt-get install libjpeg-dev libpng-dev libtiff5-dev libjasper-dev libdc1394-22-dev libeigen3-dev libtheora-dev libvorbis-dev libxvidcore-dev libx264-dev sphinx-common libtbb-dev yasm libfaac-dev libopencore-amrnb-dev libopencore-amrwb-dev libopenexr-dev libgstreamer-plugins-base1.0-dev libavutil-dev libavfilter-dev libavresample-dev

Download OpenCV 2.4.13 source code

https://opencv.org/releases/

Untar source code and below example we assume file path /opt/opencv but user should follow user's environment path.

$ cd opencv
$ mkdir release
$ cd release
$ mkdir my_build_dir
$ cd my_build_dir

/opt/opencv is example path, user should follow user's environment path.

$ cmake -D BUILD_TIFF=ON -D WITH_CUDA=OFF -D ENABLE_AVX=OFF -D WITH_OPENGL=OFF -D WITH_OPENCL=OFF -D WITH_IPP=OFF -D WITH_TBB=ON -D BUILD_TBB=ON -D WITH_EIGEN=OFF -D WITH_V4L=OFF -D WITH_VTK=OFF -D BUILD_TESTS=OFF -D BUILD_PERF_TESTS=OFF -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D OPENCV_EXTRA_MODULES_PATH=/opt/opencv_contrib/modules /opt/opencv/

$ make -j4
$ make install

Check OpenCV version

$ pkg-config --modversion opencv

=== EPD Application === ==== Xml file Configure ==== Before image display ,user have to configure xml of file path、file name、 slide_interval and waveform mode. Content of xml file as below. <epd_config><epd name="EPD 31.2"></epd></epd_config>