18f14k50 low speed

[mpardinho]

with 12mhz crystal USB work 100%
but i need work with 8Mzh low speed

can i help ?

'***************************************************************************
'*  Name    : BasicUSB.pbp                                                 *
'*  Author  : Darrel Taylor                                                *
'*  Notice  : Copyright (c) 2009                                           *
'*  Date    : 7/23/2009                                                    *
'*  Version : 1.0                                                          *
'*  Notes   :                                                              *
'*          :                                                              *
'***************************************************************************
;--- if you un-comment these, you must comment the ones in the .inc file ---
ASM  ; 18F2550/4550, 20mhz crystal
;   __CONFIG    _CONFIG1L, _PLLDIV_5_1L & _CPUDIV_OSC1_PLL2_1L & _USBDIV_2_1L
;   __CONFIG    _CONFIG1H, _FOSC_HSPLL_HS_1H
;   __CONFIG    _CONFIG2H, _WDT_ON_2H & _WDTPS_512_2H
;   __CONFIG    _CONFIG3H, _PBADEN_OFF_3H
;   __CONFIG    _CONFIG4L, _LVP_OFF_4L & _XINST_OFF_4L
ENDASM

ASM  ; 18F13K50/14K50  Only 12mhz crystal can be used for USB
    __CONFIG    _CONFIG1L, _CPUDIV_NOCLKDIV_1L & _USBDIV_OFF_1L
    __CONFIG    _CONFIG1H, _FOSC_HS_1H & _PLLEN_ON_1H & _PCLKEN_ON_1H & _FCMEN_OFF_1H & _IESO_OFF_1H
ENDASM

DEFINE OSC 48
clear

;--- Setup Interrupts ------------------------------------------------------
INCLUDE "DT_INTS-18.bas"     ; Base Interrupt System

ASM
INT_LIST  macro    ; IntSource,          Label,  Type, ResetFlag?
        INT_Handler   USB_Handler
    endm
    INT_CREATE               ; Creates the interrupt processor
endasm

;--- Setup USB -------------------------------------------------------------
INCLUDE "DT_HID260.pbp"

DEFINE USB_VENDORID    6017
DEFINE USB_PRODUCTID   2000
DEFINE USB_VERSION     1
DEFINE USB_VENDORNAME  "Darrel Taylor"
DEFINE USB_PRODUCTNAME "DT_HID"
DEFINE USB_SERIAL      "001"
DEFINE USB_INSIZE      32   ;  IN report is PIC to PC (8,16,32,64)
DEFINE USB_OUTSIZE     16   ; OUT report is PC to PIC
DEFINE USB_POLLIN      10   ; Polling times in mS, MIN=1 MAX=10
DEFINE USB_POLLOUT     10

; --- Each USB LED is optional, comment them if not used ----
DEFINE USB_LEDPOLARITY 1       ; LED ON State [0 or 1]  (default = 1)
DEFINE USB_PLUGGEDLED  PORTB,0 ; LED indicates if USB is connected
DEFINE USB_TXLED       PORTC,2 ;  "      "     data being sent to PC
DEFINE USB_RXLED       PORTC,1 ;  "      "     data being received from PC

OutCount    VAR  WORD : OutCount = 0
Value       VAR  WORD
X           VAR  WORD

;--- Setup ADC -------------------------------------------------------------
DEFINE ADC_BITS 10 ; Number of bits in ADCIN result
ADCON2.7 = 1       ; right justify    (Change this if ADFM in diff register)
ANSEL = %00010000  ; AN4/RC0 Analog
ANSELH = 0

;--- The Main Loop ---------------------------------------------------------
Main:
    FOR X = 0 to 1000           ; Check for incomming USB data while pausing
@     ON_USBRX_GOSUB  _HandleRX
      PAUSE 1
    NEXT X
    
    ADCIN 4, Value
    OutCount = OutCount + 1
    ARRAYWRITE USBTXBuffer,["AN0=",DEC Value," -",DEC OutCount,"  "]
    IF Plugged THEN GOSUB DoUSBOut     ; only send when USB is connected
GOTO Main

;---- This just sends the received packet back to the PC -------------------
HandleRX:
    ARRAYWRITE USBTXBuffer,[STR USBRXBuffer\USBBufferSizeRX]
return

[cc1984]

I don't see where you are setting the UCFG register. You can select low-speed, see the data sheet and search for UCFG.