#TI: Connecting the tm4c1294xl to a ov7670

Hi everybody! I have just uploaded two repositories related to the EK-TM4C1294XL!

You can:

	Take photos over serial interface: https://goo.gl/8PlS7y Stream (slow) video via webserver: https://goo.gl/gQDFTO

Connect the OmniVision ov7670 -old but everywhere- (version with FIFO AL422B) to the LaunchPad Tiva™ C Series EK-TM4C1294XL and take photos over serial interface, or use the http webserver to get a (slow) video streaming.

Things used in this project

Hardware components

Wiring

ov7670 - Tiva C EK-TM4C1294XL

CP2102 - Tiva C EK-TM4C1294XL

• (1) Check JP4 -> Select CAN
• (2) I2C pins need pull-up resistors (e.g. 10kOhm connected to +3.3V)

Usage

Serial Interface

pyGame window showing taken photo

To take/get a picture you need to install Python 2.7, pyGame and pySerial:

0. install python: https://www.python.org/download/releases/2.7/
1. install pip: https://pip.pypa.io/en/stable/installing/#do-i-need-to-install-pip
2. install pyGame and pySerial:

   python -m pip install pygame
   python -m pip install pyserial
   

   python camview_tiva.py COMxx

   xx - UART port.

Webserver:

To access the camera video stream, use a browser and enter the webserver address (e.g. http://<< camera-ip >>). Using the buttons Start Camera or Capture Image the video streaming starts. The Toggle LED button toggle a LED on the board. This can be used to switch on some infrared LEDs.

The website is contained on the file io_fsdata.h, the folder fs is converted into this file using makefsfile. The file website.bat can be used for that purpose:

c:\ti\TivaWare_C_Series-2.1.3.156\tools\bin\makefsfile -i fs -o io_fsdata.h -r -h -q 

Note: change the TivaWare path!

BoosterPack Eagle files

• Coming Soon!

More info & Help

• EK-TM4C1294XL: http://www.ti.com/tool/ek-tm4c1294xl
• ov7670: http://www.voti.nl/docs/OV7670.pdf
• AL422B: http://www.averlogic.com/AL422B.asp
• Camera pinout: https://goo.gl/975hZJ
• Camera schematic: https://goo.gl/nBZcSB

Changelog

• 1.0 - First release.

Credit

• Based on : https://github.com/desaster/ov7670fifotest

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