Installation sequence

[Demon]

Steve, I must have something wrong in the config switches above. The LED is blinking more than twice as fast as it should. This is the test code:

'define LOADER_USED 1
LED1 VAR PortD.1
START: HIGH LED1
PAUSE 1000
LOW LED1
PAUSE 1000
GOTO START
Finish: end

I am using a 20MHz external oscillator. I would like to be able to use slow speed USB on this device later. Do you see something I missed in the config?

Robert

[mister_e]

you just need to modify the .INC in the PBP folders. My own file looks like that

;****************************************************************
;*  18F4550.INC                                                 *
;*                                                              *
;*  By        : Leonard Zerman, Jeff Schmoyer                   *
;*  Notice    : Copyright (c) 2004 microEngineering Labs, Inc.  *
;*              All Rights Reserved                             *
;*  Date      : 12/31/04                                        *
;*  Version   : 2.46                                            *
;*  Notes     :                                                 *
;****************************************************************
        NOLIST
    ifdef PM_USED
        LIST
        "Error: PM does not support this device.  Use MPASM."
        NOLIST
    else
        LIST
        LIST p = 18F4550, r = dec, w = -311, f = inhx32
        INCLUDE "P18F4550.INC"	; MPASM  Header
       ; __CONFIG    _CONFIG1L, _PLLDIV_5_1L & _CPUDIV_OSC1_PLL2_1L & _USBDIV_2_1L
       ; __CONFIG    _CONFIG1H, _FOSC_HSPLL_HS_1H
       ; __CONFIG    _CONFIG2H, _WDT_ON_2H & _WDTPS_128_2H
       ; __CONFIG    _CONFIG3H, _PBADEN_OFF_3H
       ; __CONFIG    _CONFIG4L, _LVP_OFF_4L & _ICPRT_OFF_4L & _XINST_OFF_4L
        NOLIST
    endif
        LIST
EEPROM_START	EQU	0F00000h
BLOCK_SIZE	EQU	32

not much.. it's the whole file i have.

Do you still use the Bootloader? Did you also use the DEFINE OSC 20?

How about your current one?

[Demon]

you just need to modify the .INC in the PBP folders. My own file looks like that

...

        INCLUDE "P18F4550.INC"	; MPASM  Header
       ; __CONFIG    _CONFIG1L, _PLLDIV_5_1L & _CPUDIV_OSC1_PLL2_1L & _USBDIV_2_1L
       ; __CONFIG    _CONFIG1H, _FOSC_HSPLL_HS_1H
       ; __CONFIG    _CONFIG2H, _WDT_ON_2H & _WDTPS_128_2H
       ; __CONFIG    _CONFIG3H, _PBADEN_OFF_3H
       ; __CONFIG    _CONFIG4L, _LVP_OFF_4L & _ICPRT_OFF_4L & _XINST_OFF_4L

...

You can't just comment out default values. You must assign them something, somewhere, no?

Do you still use the Bootloader?

Nope.

Did you also use the DEFINE OSC 20?

Nope.

How about your current one?

This is my latest code, same acceleration problem:

'define LOADER_USED 1
LED1 VAR PortD.1
START: HIGH LED1
PAUSE 1000
LOW LED1
PAUSE 1000
GOTO START
Finish: end


And these are the configuration bits used:

; 96MHz PLL Prescaler:
CONFIG PLLDIV = 5 ;Divide by 5 (20MHz input)
; CPU System Clock Postscaler:
CONFIG CPUDIV = OSC1_PLL2 ;[OSC1/OSC2 Src: /1][96MHz PLL Src: /2]
; Full-Speed USB Clock Source Selection:
CONFIG USBDIV = 1 ;Clock source from OSC1/OSC2
; Oscillator Selection bits:
CONFIG FOSC = HS ;HS oscillator, HS used by USB
; Fail Safe Clock Monitor:
CONFIG FCMEM = OFF ;Disabled
; Internal/External Switch Over:
CONFIG IESO = OFF ;Disabled
; Power Up Timer:
CONFIG PWRT = ON ;Enabled
; Brown Out Reset:
CONFIG BOR = ON ;Enabled, SBOREN bit is disabled
; Brown Out Voltage:
CONFIG BORV = 21 ;2.1V
; USB Voltage Regulator Enable:
CONFIG VREGEN = OFF ;Disabled
; Watchdog Timer:
CONFIG WDT = OFF ;HW Disabled - SW Controlled
; Watchdog Postscaler:
CONFIG WDTPS = 32768 ;1:32768
; MCLR Enable:
CONFIG MCLRE = ON ;Enabled
; Low Power Timer1 Oscillator Enable:
CONFIG LPT1OSC = OFF ;Timer1 oscillator configured for high power
; Port B A/D Enable:
CONFIG PBADEN = OFF ;PortB<4:0> pins are configured as digital I/O on RESET
; CCP2 Mux bit:
CONFIG CCP2MX = ON ;CCP2 input/output is multiplexed with RC1
; Stack Overflow Reset:
CONFIG STVREN = ON ;Enabled
; Low Voltage ICSP:
CONFIG LVP = OFF ;Disabled
; Dedicated In-Circuit Debug/Programming Enable:
CONFIG ICPRT = OFF ;Disabled
; Extended Instruction Set Enable:
CONFIG XINST = OFF ;Disabled
; Background Debugger Enable:
CONFIG DEBUG = OFF ;Disabled
; Code Protection Block 0:
CONFIG CP0 = OFF ;Disabled
; Code Protection Block 1:
CONFIG CP1 = OFF ;Disabled
; Code Protection Block 2:
CONFIG CP2 = OFF ;Disabled
; Code Protection Block 3:
CONFIG CP3 = OFF ;Disabled
; Boot Block Code Protection:
CONFIG CPB = OFF ;Disabled
; Data EEPROM Code Protection:
CONFIG CPD = OFF ;Disabled
; Write Protection Block 0:
CONFIG WRT0 = OFF ;Disabled
; Write Protection Block 1:
CONFIG WRT1 = OFF ;Disabled
; Write Protection Block 2:
CONFIG WRT2 = OFF ;Disabled
; Write Protection Block 3:
CONFIG WRT3 = OFF ;Disabled
; Boot Block Write Protection:
CONFIG WRTB = OFF ;Disabled
; Configuration Register Write Protection:
CONFIG WRTC = OFF ;Disabled
; Data EEPROM Write Protection:
CONFIG WRTD = OFF ;Disabled
; Table Read Protection Block 0:
CONFIG EBTR0 = OFF ;Disabled
; Table Read Protection Block 1:
CONFIG EBTR1 = OFF ;Disabled
; Table Read Protection Block 2:
CONFIG EBTR2 = OFF ;Disabled
; Table Read Protection Block 3:
CONFIG EBTR3 = OFF ;Disabled
; Boot Block Table Read Protection:
CONFIG EBTRB = OFF ;Disabled

I'm programming the chip via the MeLabs serial programmer.

Robert

[Demon]

Something else is acting weird. The MCLR pin seems to be held by the programmer for some reason. I have to unplug the MCLR wire to the programmer in order to be able to use my RESET button.

It works properly for an 16F877, but not for an 18F4550.

Robert

[Demon]

D'uh, nevermind on the acceleration thingy. I had to add DEFINE OSC 20.

I thought CONFIG PLLDIV = 5 in the default configuration bits set it at 20MHz, apparently not.

< Divide by 5 (20MHz input) >

Robert

[bioeng-mostafa]

Hello every one
i want help of you to send to me or help me to find the two files
1-18f4550.inc
2-18f4550.bas
thank you

[Bruce]

Hi Robert,

CONFIG PLLDIV = 5 is a "config word" option. This sets the PLL prescaler to
divide the 20MHz primary osc input by 5. This is required when using a 20MHz
primary osc because the input to the 96MHz PLL must always be 4MHz.

DEFINE OSC 20 is different. This is used internally by PBP to adjust timing of
PBP library routines to the 20MHz primary oscillator.

bioeng-mostafa,

If you don't have the 18F4550 device header files, then you need to update
to the latest version of PBP. Version 2.46 introduced support for the 18F4550
series.

Just having someone email you device header files does not guarantee you'll
be able to use the new device. There are more to some PBP updates than
additional device specific header files.