Problem with enumeration and EasyHID

[skimask]

Hi, I'm using a pic18f2550 with picbasic pro and easyhid.

I get the files generated from easyhid to compile correctly. The problem is that when I plug in the usb cable, the computer never enumerates the pic, no new hardware found box on windows.

I connected the pins correctly, i think, just as the schematic suggests on the easyhid website. I'm just trying to code something where it will send the a/d values from an RA pin to the pc.

Any suggestions or tips?
Thanks in advance

Those that read this are supposed to help you figure out your code problems because we can all guess exactly how you have written your code. Am I correct in this assumption?


Post some code!!!

[mister_e]

http://www.picbasic.co.uk/forum/showthread.php?t=5418

[jizyjuice]

Heres the code that Easy HID created. I set up an led to see where the code stops at. It seems to stop after
USBOut 1, USBBuffer, USBBufferCount, DoUSBOut ' if bus available, . I guess this is because I dont have any code right now to send data, but I was more concerned with the pc recognizing the pic.

If usbinit is called, doesnt the pc enumerate the usb device? It never shows that a hid device is connected. Is there something I am missing to get the pc to recognize this device?!



DEFINE OSC 48
DEFINE LOADER_USED 1

USBBufferSizeMax con 8 ' maximum buffer size
USBBufferSizeTX con 8 ' input
USBBufferSizeRX con 8 ' output

' the USB buffer...
USBBuffer Var Byte[USBBufferSizeMax]
USBBufferCount Var Byte

' ************************************************** **********
' * main program loop - remember, you must keep the USB *
' * connection alive with a call to USBService every couple *
' * of milliseconds or so... *
' ************************************************** **********

usbinit ' initialise USB...
ProgramStart:

gosub DoUSBOut
goto ProgramStart


' ************************************************** **********
' * wait for USB interface to attach *
' ************************************************** **********

DoUSBOut:
USBBufferCount = USBBufferSizeTX ' TX buffer size
USBService ' keep connection alive
USBOut 1, USBBuffer, USBBufferCount, DoUSBOut ' if bus available, transmit data
return

[Darrel Taylor]

That's not the "Whole" code that easyHID created.

You've deleted some things that are very important.

If you just want to see it enumerate, change the main loop to this...

ProgramStart: 
   USBService           ' keep connection alive
goto ProgramStart

But that will neither send or receive any data.
This also assumes you've setup your Configs properly.

[jizyjuice]

Oh, I took out the code for receiving data from the pc to the pic. I just want to communicate to the pc side.

All the configs are what easyhid has set up. I will try just polling serviceusb and see if that can get the pic to enumerate. Thanks

[mister_e]

What Darrel talked about was the PIC configuration Fuses... which EasyHID don't create for you.

http://www.picbasic.co.uk/forum/showthread.php?t=543

http://www.picbasic.co.uk/forum/showthread.php?t=5418

[jizyjuice]

I still cant get the pic to enumerate.

Here is my code for the fuses:

else
LIST
LIST p = 18F2550, r = dec, w = -311, w = -230, f = inhx32
INCLUDE "C:\PBasPro Projects\AirDrum\PICBasicPRO\P18F2550.INC" ; MPASM Header
__CONFIG _CONFIG1L, _PLLDIV_5_1L & _CPUDIV_OSC1_PLL2_1L & _USBDIV_2_1L
__CONFIG _CONFIG1H, _FOSC_XTPLL_XT_1H & _IESO_OFF_1H
__CONFIG _CONFIG2L, _PWRT_OFF_2L & _BOR_OFF_2L & _BORV_2_2L & _VREGEN_OFF_2L
__CONFIG _CONFIG2H, _WDT_OFF_2H
__CONFIG _CONFIG3H, _MCLRE_ON_3H & _LPT1OSC_OFF_3H & _PBADEN_OFF_3H & _CCP2MX_OFF_3H
__CONFIG _CONFIG4L, _STVREN_OFF_4L & _LVP_OFF_4L & _XINST_OFF_4L & _DEBUG_OFF_4L
NOLIST
endif



Here is the main code again:

DEFINE OSC 48
DEFINE LOADER_USED 1

USBBufferSizeMax con 8 ' maximum buffer size
USBBufferSizeTX con 8 ' input
USBBufferSizeRX con 8 ' output

' the USB buffer...
USBBuffer Var Byte[USBBufferSizeMax]
USBBufferCount Var Byte
i var byte


' ************************************************** **********
' * main program loop - remember, you must keep the USB *
' * connection alive with a call to USBService every couple *
' * of milliseconds or so... *
' ************************************************** **********
usbinit ' initialise USB...
ProgramStart:
'gosub DoUSBIn
'gosub DoUSBOut

High PORTB.0
for i = 1 to 10
Pause 2
USBservice
next i

LOW PORTB.0
for i = 1 to 10
Pause 2
USBservice
next i
goto ProgramStart



' ************************************************** **********
' * receive data from the USB bus *
' ************************************************** **********
DoUSBIn:
USBBufferCount = USBBufferSizeRX ' RX buffer size
USBService ' keep connection alive
USBIn 1, USBBuffer, USBBufferCount, DoUSBIn ' read data, if available
return

' ************************************************** **********
' * wait for USB interface to attach *
' ************************************************** **********
DoUSBOut:
USBBufferCount = USBBufferSizeTX ' TX buffer size
USBService ' keep connection alive
USBOut 1, USBBuffer, USBBufferCount, DoUSBOut ' if bus available, transmit data
return





The LED lights up correctly, but the pic still does not enumerate even with calling the USBSERVICE. I have 0.5microF on VSUB, 20 MHZ crystal with 33 pF connected to it. D+, D- set up correctly. Bus powered.

I have no idea what the problem is!