Stopwatch demo (VEXcode)

Now that VEXcode is released and has the latest SDK I can finally release the stopwatch demo I wrote over a year ago.

Enjoy.

stopwatch

18 Likes

Is it now possible to display an image from the micro-SD card as well as using the buffer?

Edit: With VexCode

yes, very simple. You need the update to 1.0.6, that fixed a small bug in the png library, then all you need is

/*----------------------------------------------------------------------------*/
/*                                                                            */
/*    Module:       main.cpp                                                  */
/*    Author:       james                                                     */
/*    Created:      Fri Mar 22 2019                                           */
/*    Description:  V5 project                                                */
/*                                                                            */
/*----------------------------------------------------------------------------*/
#include "vex.h"

using namespace vex;

// A global instance of vex::brain used for printing to the V5 brain screen
vex::brain       Brain;

// define you global instances of motors and other devices here


int main() {   
    Brain.Screen.drawImageFromFile( "V5-Brain-small.png", 0, 0 );
    
    while(1) {
        // Allow other tasks to run
        this_thread::sleep_for(10);
    }
}

to be able to display this image from SD Card (as long as you give it the name V5-Brain-small.png)
V5-Brain-small

6 Likes

any way to get the png on the sd card connected on the brain without sneaker net? that would be a nice feature (says the guy who has the good sd card at school, but no adapters there etc… ugh!!! )

No, it’s more complicated than it appears, but essentially the user code cpu has exclusive access to the SD Card. The USB and all other comms is handled by the vexos cpu.

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think “you’re not the boss of me” impediments schools might face with their district IT department…

(and please, can we call VEXcode preview v1 … otherwise, IT groups might not let “beta software” installed.

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Does this work for .png files without a background? I can make your function work , but I am having trouble with my image.

If the question is “do we support png transparency” then no, we do not support the png alpha channel or images with a transparent background.

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Ok, Thanks for the update. I Will keep that in mind!

That’ s really cool! I’m glad that you released the code so that us code neophytes can figure it all out.

1 Like

Obviously you aren’t a neophyte to vocabulary lol.

hopefully you saw the other graphics demo code I released.


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how did you make the HEX array of the image? did you make your own program to do so? Or did you use other sources that can be used online? I am interested in putting an image on the screen.

Hi, I was wondering how you got that nice image of your brain screen. Is there a screen capture for v5 brain or something?

Hey @trexing123! A lot of people on the forum dislike “necroposting” aka “reviving old threads”. Most people think that you shouldn’t reply on threads that haven’t been posted on for over 3 or 4 months. Just something to keep in mind. To answer your question, I believe that there were developer tools that the original developers of the V5 system could use to test code, one of those being a simulator for the V5 screen that could run on a computer (Example of that here). Since JPearman had access to those tools (since he works for Vex or Robomatter or something like that) he probably just did a screenshot on whatever computer he was using at the time. There is not a screen capture feature for the V5 brain (although I have to admit, it sounds like a cool idea).

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yea, it was done using development tools we use for documentation and things like that, however, you can also do a screenshot using the pros command line tool. Perhaps one day it will also get integrated into VEXcode.

10 Likes