Revision as of 10:26, 11 June 2018 (view source) Erick.huang (talk | contribs) ← Older edit		Revision as of 10:34, 11 June 2018 (view source) Erick.huang (talk | contribs) Newer edit →
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	#*Bmp file: mono color/16 color/256 color/24bits bitmap format		#*Bmp file: mono color/16 color/256 color/24bits bitmap format
	#*Ex: BmpToPixel_D73.py EVK_03.bmp EVK_03.esl		#*Ex: BmpToPixel_D73.py EVK_03.bmp EVK_03.esl
		+	#
		+	Type BmpToPixel.bat to use batch conversion
		+
	#Copy output files to tftp Base Directory 		#Copy output files to tftp Base Directory 

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Revision as of 10:34, 11 June 2018

Introduction

This document will teach you how to use EPD-132R EVK to display image.

Preparation

EVK Components

Item	Description
1	EPD
2	EVK mainboard
3	Power adapter and cable
4	ED22 board
5	ED22 micro USB cable
6	10 pin FFC cable
7	2.4G Wi-Fi antenna

2.4G Wi-Fi AP

Prepare a 2.4G Wi-Fi AP.

Win7 PC

Prepare a win7 PC.

Setup TFTP server

1. Make sure PC connect to 2.4G Wi-Fi AP and get IP address
2. Recommend used tftpd64
3. Set the process reference link  https://www.youtube.com/watch?v=YdVEonLMWYs

Python Environment Setup

1. Download and install Python (must use Python version 2.7.x)
2. Set the variables of Widows environment path: add “C:\Python27;C:\Python27\Scripts” to path  
3. Download and install python PIL package
4. Download and unzip picture transformation tool "BmpToPixel_D73.py"

Bmp Image To EPD Format

1. Run BmpToPixel_D73.py <source BMP image filename> <output filename> in cmd window
   • source BMP image filename: the image file to be converted
   • output filename: converted file name(recommend to use "esl" as the extension)
   • Bmp size must comply with EPD resolution 1600 x 1200
   • Bmp file: mono color/16 color/256 color/24bits bitmap format
   • Ex: BmpToPixel_D73.py EVK_03.bmp EVK_03.esl

Type BmpToPixel.bat to use batch conversion

1. Copy output files to tftp Base Directory 

           

WISE-ED22 Setup

1. Download and install WISE-ED22 driver
2. Connected to PC via a micro USB cable, the Device  Manager will appear mbed Serial Port

          

EVK Setup

Hardware Setup

       Follow steps and picture below to setup the hardware

1. Connected EPD FPC to mainboard
2. Connected Wi-Fi antenna to mainboard
3. Connected ED22 board to mainboard via FFC cable
4. Connected ED22 board to PC via micro USB cable
5. Connected power cable to mainboard

       

Command Console Setting

Start a serial tool(use tera term in this), and make the communication setting as shown below.

     

EVK Start

Press “RST” button, the screen will show as below

    

Example : Download and Refresh Image

Example Architecture

The example architecture is as below

Launch TFTP Service

1. PC join to Wi-Fi AP
2. Lunch tftpd64.exe and select "Tftp Server" tab
3. Check image folder, image file size must be 960000 byte​ 

​              ​​

4. Select tftp server IP

              

EVK Join to Wi-Fi AP

1. EVK operates in command mode, you must start a serial tool.
2. type join  <SSID> <encryption> [key]
   • SSID, encryption protocol and key consistent with Wi-Fi AP setting
   • Ex: join RT66 wpa2_aes 12345678
3. Get IPv4 IP if join successful

             

Download Images to Flash

tftp <ip> <filename> <flash index> [-r] 

• ​​ip: tftp server ip
• filename: image file name 
• flash index: range 0~3, that have maximum  4 images(0~3) be saved in flash 
• -r : immediate refresh after download complete
• Ex: tftp 192.168.8.178 example_2.esl  1 -r

Refresh Image

epd_disp <-f flash index | -i internal image index>

• -f: display image that read from flash, range 0~3 
• -i: display internally generated image, range 0~4    
      0: fully black
      1: full white
      2: full red
      3: black/white/red vertical stripes
      4: black/white/red horizontal stripes
• Ex: epd_disp -f 1
• Ex: epd_disp -i 4 

EVK Command

Describes the EVK commands that you can use.

Command List

Command	Function
evk_info	get EVK version
epd_info	get EPD information
get_mac_addr	get MAC
ping	ping command
join	Wi-Fi connect
tftp	download Images to Flash
epd_disp	refresh Image
iperf	Wi-Fi throughput test
bt_wifi	start ble-wifi introducer service

Command Description

• evk_info: Return EVK version
• epd_info: Return EPD model name, resolution and F/W version 
• get_mac_addr: Return EVK MAC address
• ping <dest> [-i <interval in ms>] [-n <number>] [-l <length>] 
  • Return ping reply time if successful
  • ping 8.8.8.8 -i 100 -n 5 -l 50
• join: Reference “EVK Join to Wi-Fi AP” 
• tftp: Reference “Download Images to Flash”
• epd_disp: Reference "Refresh Image” 

BLE-WiFi Introducer Service

Ble-WiFi introducer service is a demonstration that set SSID and password to join network by phone. EVK will launch a BLE GATT server and advertise itself.
Then you need to manipulate on your phone.

Step 1: Install and launch the BLE Scanner app on iOS or Android.

    

Step 2:  Pull down the screen to rescan devices and it will list nearby BLE devices. Find the “WiFiInt” device and press CONNECT button.

        

Step 3:  If the connection is successful, you can see the picture below. Press  the "CUSTOM SERVICE" button.

        

Step 4: Find the UUID: ACA0EF7C-EEAA-48AD-9508-19A6F6B356 for SSID characteristic.

        

Step 5: Find the UUID: 40B7DE33-93E4-4C8B-A876-D833B415A6CE for Password characteristic then procedure as Step4.
        

Easy and Fast to Refresh Image via USB

EPD-132R_CLI