USBDemo, something to learn USB a little bit

[Darrel Taylor]

Hey, It's mister_e's thread.
I gotta use the dancing WooHoo.

EDIT: And if it weren't for the 40 posts per page, you'd know why we were dancing ...
Pevious post
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[naga]

Hi,

Im in trouble again..not detecting my usb device..18F4550(compiled successfully).

Iam using 20 mhz 22pf so i modified steve's code like this:
__CONFIG _CONFIG1L, _PLLDIV_5_1L & _CPUDIV_OSC1_PLL2_1L & _USBDIV_2_1L

__CONFIG _CONFIG1H, _FOSC_XTPLL_XT_1H & _FCMEN_OFF_1H & _IESO_OFF_1H (updated my mplab to 7.60)

tried :
__CONFIG _CONFIG1L, _PLLDIV_5_1L & _CPUDIV_OSC3_PLL4_1L & _USBDIV_2_1L
post # 44(no luck).
and your "http://www.darreltaylor.com/files/USBDemo2_DT.txt" also but
INCLUDE "DT_INTS-18.bas" not found error..

waiting for your reply..

Thank you...

[Darrel Taylor]

For a 20Mhz crystal ...

     __CONFIG    _CONFIG1L, _PLLDIV_5_1L & _CPUDIV_OSC1_PLL2_1L & _USBDIV_2_1L
     __CONFIG    _CONFIG1H, _FOSC_HSPLL_HS_1H & _FCMEN_OFF_1H & _IESO_OFF_1H

>> and your "http://www.darreltaylor.com/files/USBDemo2_DT.txt" also but
>> INCLUDE "DT_INTS-18.bas" not found error..

You can download the files from here ...
http://darreltaylor.com/DT_INTS-18/home.html
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[naga]

[QUOTE=Darrel Taylor;42974]For a 20Mhz crystal ...

     __CONFIG    _CONFIG1L, _PLLDIV_5_1L & _CPUDIV_OSC1_PLL2_1L & _USBDIV_2_1L
     __CONFIG    _CONFIG1H, _FOSC_HSPLL_HS_1H & _FCMEN_OFF_1H & _IESO_OFF_1H

Dear Darrel,
just tried above code and demo2_dt.txt but no luck..showing "USB DEVICE NOT RECOGNISED"

i'll send you the schematic 2morrow..plz go through it..
using PICKIT2 V2.10 PROGRAMMER (NEED TO CHANGE ANY SETTINGS?)

REGARDS..

[naga]

Dear Darrel,

Iam happy that succeed in 18f2550 4mhz- 22pf..
Iam still struggling for 18f4550 tried 4mhz-22pf with steves original hex (no luck)... can i have Steve's 4550 code's Schematic.i think its different from my development board..

Thanks & Regards,

[Darrel Taylor]

I think Steve's original circuit was the same as the schematic at the bottom of the EasyHID page.

http://www.mecanique.co.uk/products/usb/easyhid.html

At least I don't remember him posting a different one.
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[naga]

Hi,
schematic helped...now its working ..

Thanks to Mister_E for making such a fantastic code..and
Thanks to Darrel Taylor for great support..

Best Regards..
Naga

[naga]

@Darrel,
Hi,
circuit becomes very slow when i enable all PORTA<5:2> inputs; i mean it responds after some delay, only when i switch on all push buttons..
slowing down including AN<1:0> ADC results in the progress bars..otherwise perfect :-)

Thanks&Regards.

[leisryan]

Sir:

I'm also new to USB i was thinking if USB can't handle peer to peer does it mean we can't use newer PICS to interface to one another using USB? I 've learned that USB PICS are only capable of PERIPEHRAL mode but not HOST without any external aid like FTDI? is it possible to daisy-chain 2 or more PICS using onboard USB? I'm starting a project base on easyHID but i need some sort of external controler like hand held control with LCD's, Keypads,-etc. Are other onboard peripherals in the PIC like USART the only way to do it?,with USB already dedicated to PC interface?
Hoping for anyone's enlightenment!!!

Yours Trully,
Ryan