I come to you because I have a complex project and I have a complicated choice to make.
I have an arduino, camera and screen display type 4D systems (input Rx & Tx). The objective is to get the video stream from the camera and transfer it on the screen, however, some will say that the Arduino does not support video processing (CPU), but my camera has its own system of signal processing, and the stream is post-processing.
My questions are rather, what kind of flow of the camera it is better to use (Rx & Tx, CMOS, analog, LVDS, BT.656), I said that my streams can be parallels or series. My second is how to pass the image to the screen via the arduino?
Work out the amount of data you need to read, how many pixels per frame? how many frames per second? how many bits per pixel? The best speed you can get from the Uart is 115200 bits per second but the yield is about half that ( if your lucky - you need to add upto 3 bits per byte to allow for the way the Uart works)
After that of course you have to put the data some where.
what kind of flow of the camera it is better to use (Rx & Tx, CMOS, analog, LVDS, BT.656),
What do you mean by this. CMOS is nothing to do with anything. By Rx & Tx I assume you mean a Serial Uart. But analog wtf!!.
My second is how to pass the image to the screen via the arduino?
What screen? provide a link? form who? what interface?
zoomkat:
You probably need to explain what function you want the arduino to perform. Why not just connect the camera directly to the screen if both have tx/rx?
may be adapted to the size of the image for display?
Sure. I suggest that you answer holmes4's questions. When you have done that, you'll be able to talk about your project with your hands in your pockets, instead of waving all over the place.
The 4D screen need to be initialed and configured, exemple code:
/*
This "hello_world_Goldelox" sketch provides a very easy introduction for beginners or Arduino users in
interfacing any serial-display-module from 4D Systems Pty. Ltd.
Before using this sketch, the 4D display module to be used must be converted to a serial (SPE) display
module using the Workshop 4 IDE also provided by 4D Systems. Workshop 4 can be downloaded
from http://www.4dsystems.com.au/prod.php?id=172
Converting any 4D Systems display to serial display using the SPE tool in Workshop 4 has been covered and
discussed in the beginning of this application note. In addition, all commands for receiving control,
controlling or writing to the display is discussed and presented in detail in the GOLDELOX-SPE-COMMAND-SET
manual.(Note: the uOLED-160-G2 was selected for this tutorial).
It is strongly recommended then that a cioy of the GOLDELOX-SPE-COMMAND-SET be downloaded and studied to
give the user an understanding of the wide array of commands available which can be used in any
Arduino project using any 4D Systems intelligent display module.
http://www.4dsystems.com.au/prod.php?id=172
This sketch provides three lines of text strings which if compiled and downloaded to the Arduino board
be displayed to show plain unformatted text string or a formatted text string ( refer to the 3rd part of
this sketch.
*/
// include 4D Systems Goldelox library for Arduino
#include <Goldelox_Const4D.h>
#include <Goldelox_Const4DSerial.h>
#include <Goldelox_Serial_4DLib.h>
#include <Goldelox_Types4D.h>
#define DisplaySerial Serial // define display serial port0
Goldelox_Serial_4DLib Display(&DisplaySerial); // declare this serial port
void setup(void)
{
//Reset the display, assuming Display is connected to Arduino via 4D Arduino Adaptor Shield
pinMode(2, OUTPUT); // D2 on Arduino resets the Display
digitalWrite(2, HIGH); // Reset Display
delay(100); // 100ms Reset pulse
digitalWrite(2, LOW); // Disable Reset
delay(3000); // Allow time for the display to initialize before communicating
Display.TimeLimit4D = 5000 ; // 5 second timeout on all commands
DisplaySerial.begin(9600) ; // initialize serial port and set Baud Rate to 9,600
Display.gfx_Cls() ; // clear display
//
// Below this comment is the first string to be serially sent to the display.
//
Display.putstr("Hello World\n\n") ; // send "Hello World" string to display
//
// Below this comment is the second string to be serially sent to the display. Note the double spacing
// to provide clarity in the presentation.
//
Display.putstr("Serial Display test\n\n\n") ; //send second string to display
//
// Below this comment is the third string to be serially sent to the display. Again for clarity
// in presentation, tripple spacing has been placed and used. Furthermore, this text
// string introduces to the user some font and text-formatting capabilities available. There are six(6)
// statements before the Display.putstr statement which instructs the Arduino to do this. You can
// edit the text string to show the display model you have. Autodetecting the display model is
// not covered by this application note.
//
Display.txt_Attributes(BOLD + INVERSE + ITALIC + UNDERLINED) ; // change and set new text format
Display.txt_Xgap(3) ;
Display.txt_Ygap(3) ;
Display.txt_BGcolour(RED) ;
Display.txt_FGcolour(WHITE) ;
Display.txt_MoveCursor(5, 0) ; // use this cursor position
Display.putstr("uOLED-160-G2 SPE + Arduino\n") ; //send third string to display
}
void loop(void)
{
// do nothing here
}
