You rock, Hack-a-Day. This is the sort of thing I love to see on here and keeps my hope for this site alive.

bah, C. I’d love to see something like this for mpasm.

So its V-USB for PIC

Nothing new, everything they put was exactly from the Microchip USB applications, probably they just renamed some functions, but they didn’t add anything to the solution already provided.

There was a file missing from the mplab zip (pointed out by a hackaday user – thanks!). This is now corrected and there is an updated zip on the site.

@DLC – The article states what it’s based on. I ported the USB stack code to HiTech C, and restructured it to make it easier to understand. I also targeted it to the breadboard USB device so you don’t need to buy an expensive PIC DEM FS USB board to try it. It’s not supposed to be original, just easier for a complete USB beginner.

I hope that makes the intention clearer.

/Simon

pic, expensive tools, close source software, windows only

sigh

One of the better posts I have read in a long time! Well documented and crystl clear. I’ve long wanted to dip my toe into the USB tank but now I think I’ll just jump on in Thanks!

“osgeld: Have you even looked at any of the thousands of “make your own programmer” projects for PICs? For pic18s, Broccoli18 was perfect.”

yes ive seen the programmers, but it doesn’t solve the other problems

my main deal with the homebrew programmers is the sheer volume of them, and usually the OP makes no attempt to say what they will do, so to me as an outsider to the pic world, It seems that either I buy a universal programmer, or I spend the rest of my life making programmers for different chips

@Osgeld The poster of the article doesn’t owe you anything. If you want to use Linux, great – you figure it out. If you want open source software, great – you figure it out. If you want to be a nice guy, you would create an article about it. But then jerks will complain that yours doesn’t use Windows and closed source.

And here’s a tip for you Osgeld. If you want people to take you seriously drop a few curse words and avoid the caps.

Also, A Pickit2 will program and do ICD for the vast majority of chips you’ll ever play around with and it costs about $30. You can hardly call that expensive. The actual chips themselves are also dirt cheap.

The official IDE/compiler runs fine under Wine from what I hear. As for open source alternatives, I’m not sure, as I’ve never felt the need to look them up.

I’m pretty sure there’s OSS PIC programmers. Look in your repository for hecks sake.

IN other news, if i had a PIC this would be one of the first things i’d use. Get rid of the gameport and move to USB (which is more portable and stronger).

Thanks Simon! I also tried to make a create interface, but I could never get the USB connection to work… I was using the 4450, but for some reason, couldn’t get it to go. Your tutorials are fantastic, and should help me get my project going in no time!

Osgeld are you a time traveler ? If you like I can guide you on resent change in past 10 years, just tell me more about you journeys, how far can you go into future is it limited by you life span? will we have synthetic AI by 2050?and does this mean we erase limits of flesh by coping our ego into silicon and gaining immortality ?

Nice and simple application but it would be nice to have one written in assebly.

Hi,

Great project, best I have found. going to use your interface to control my telescope auto focuser.

Up to now I have been using the MPLAB C18 compiler. It there a code image for this compiler. If not, how much of a headache is it to port. Prob a school boy question – hope you can help ?

Cheers, Dave

hello Simon,

Thanks for the great article for beginners. I’m building and testing it but the device just didn’t work as expected.

As reader Jason of your article on WFF has pointed out, the crystal oscillator could not necessarily be 20MHz. I have a 24MHz at hands and I’m using it. I’ve already changed the following line in main.c

__CONFIG(1, USBPLL & IESODIS & FCMDIS & HSPLL & CPUDIV1 & PLLDIV5);

to

__CONFIG(1, USBPLL & IESODIS & FCMDIS & HSPLL & CPUDIV1 & PLLDIV6);

to take into account the different oscillator frequency.

I’m wondering if I should use different capacitors in lieu of the 15pF as you are using? Is this what made my device not function?

And here’s another issue I’m stuck to -
I have tried registering in the WFF forum. I’ve completed the process except for the activation. It seems some thing wrong because I cannot receive the activation email from your site.

My user name is min2max and the email used is loadcom@sina.com. I’m wondering if you could do me a favor and activate this account manually at your side?

Thanks

Max

Simon,

I tried signing up the WFF forum with another user name and different email (yahoo), but I did not receive the activation email neither.

Any help would be appreciated.

Max

Simon,

Thank you for fixing the forum issues. It now works.

Max

It once worked for me. But at present it does not work. I get an PICKit2Error0028 while I try to simulate with a PICKit2 (red button version)