Problem with enumeration and EasyHID

[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!

[Darrel Taylor]

For a 20mhz crystal, second config line should be

__CONFIG _CONFIG1H, _FOSC_HSPLL_HS_1H & _IESO_OFF_1H

[jizyjuice]

I changed the config for 20 Mhz clock, but still no enumeration. I uploaded my project files in the following zip. Can someone please let me know if they can get this to enumerate on their bread board? Thanks

[Darrel Taylor]

It would have been much easier to start with mister_e's example ....

Apparently, you have an 18F2550.INC file in your project folder where you are changing the configs.
PBP won't use that file. It uses the one in the PBP folder.

But you should really put the configs in your program, and comment out the configs in the 18F2550.inc file in the PBP folder.

Use these ...

    asm
    __CONFIG    _CONFIG1L, _PLLDIV_5_1L & _CPUDIV_OSC1_PLL2_1L & _USBDIV_2_1L  
    __CONFIG    _CONFIG1H, _FOSC_HSPLL_HS_1H & _FCMEN_OFF_1H & _IESO_OFF_1H 
    __CONFIG    _CONFIG2L, _PWRT_ON_2L & _BOR_ON_2L  & _BORV_2_2L  & _VREGEN_ON_2L   
    __CONFIG    _CONFIG2H, _WDT_OFF_2H 
    __CONFIG    _CONFIG3H, _MCLRE_ON_3H & _LPT1OSC_OFF_3H & _PBADEN_OFF_3H & _CCP2MX_ON_3H 
    __CONFIG    _CONFIG4L, _STVREN_ON_4L & _LVP_OFF_4L & _ICPRT_OFF_4L  & _XINST_OFF_4L & _DEBUG_OFF_4L 
    endasm

Then remove the pauses in your loops, USBSERVICE must be called every ~1ms or less. (when enumerating)

After making those changes, I was able to get your program to enumerate on an 18F4550. Don't have a 2550.

[jizyjuice]

Well I changed the config files and took out the pause in the code. Still no enumeration. Could this be a hardware problem?

I attached everything the same way as the 4550 pictured by easyhid, but just adapted to the 2550.

[Darrel Taylor]

There's always a chance for a hardware problem. But that's a liitle hard to troubleshoot on this end.
The schematic is good though.

Just noticed you have a DEFINE LOADER_USED 1

Are you using a bootloader?