Trying to migrate to 18F..

[Glenn]

Well, I'm back again...

Last time I got so tired of it so I quitted that project and started with other stuff instead, PIC16F based, coz there I never get any of those troubles.

*Every* single time I try to use a 18f pic I seriously considering to get another hobby, I really really really HATE mpasm.. it NEVER f**ing work.. I dont want to know how many hour I been using on this crap

I write a program, compile it with like 87665 errors, trying to get the config bits correctly (wich always works on 16f and mp) and after some hour or so I MAYBE can compile it witn just warnings, and then I upload it to the pic, and it does NOT work..

I REALLY try to read both the includes of mpasm AND microchips datasheets, but still, I never get it right.. I try to comment out all config directives in the PBP include (tor the correct pic), or sometimes just the ones I want to change.. but nonono.

..If I at that point change the config bits to "mp-style" and compile it for a 16f (with mp), it ofcourse works directly with no problems... so its NOT my code, its the configbits.

The pic I try to use now is a PIC18F2520 and since my long advanced program (that works perfectly fine on a pin compatible 16F876A) OFCOURSE didn't work, I created a reeeally simple short program that just blinked two LED's..

@	 __CONFIG    _CONFIG1L, _PLLDIV_5_1L & _CPUDIV_OSC1_PLL2_1L & _USBDIV_2_1L
@  __CONFIG   _CONFIG1H, _FOSC_INTOSCIO_EC_1H
'@  __CONFIG   _CONFIG2H, _MCLRE_OFF_2H
@  __CONFIG    _CONFIG2H, _WDT_OFF_2H & _WDTPS_128_2H
@  __CONFIG    _CONFIG3H, _PBADEN_OFF_3H
@  __CONFIG    _CONFIG4L, _LVP_OFF_4L & _XINST_OFF_4L

DEFINE OSC 20	' Lets work at 20 MHz

blueled		var PORTB.4
redled		var PORTB.5

main:
	low redled
	low blueled
	pause 500
	high redled
	pause 500
	high blueled
	pause 500
	goto main

This compiles with no errors, but warnings (about deprecated __CONFIG for example)

..I have a pulldown on MCLR and the LED's are connected with resistors.. I want to use the internal oscillator, and no WDT.

all __CONFIG statements in the PBP 18F8520.INC are commented out.

Can anyone point me to somwhere this are explained ? or tell me what the problem is ?

[Glenn]

..I can add that this is one of MANY MANY different config settings I have tried..

[ScaleRobotics]

@	 __CONFIG    _CONFIG1L, _PLLDIV_5_1L & _CPUDIV_OSC1_PLL2_1L & _USBDIV_2_1L
@  __CONFIG   _CONFIG1H, _FOSC_INTOSCIO_EC_1H
'@  __CONFIG   _CONFIG2H, _MCLRE_OFF_2H
@  __CONFIG    _CONFIG2H, _WDT_OFF_2H & _WDTPS_128_2H
@  __CONFIG    _CONFIG3H, _PBADEN_OFF_3H
@  __CONFIG    _CONFIG4L, _LVP_OFF_4L & _XINST_OFF_4L

It can be confusing to switch. It looks like you are using the wrong configs for the PIC18F2520.

You should be looking at the mpasm folder called 'MPASM Suite' (at least that is what mine is called), and then look at file: P18F2520.INC

At the bottom of that file, you will see all your options, like this:

; The following is an assignment of address values for all of the
; configuration registers for the purpose of table reads
_CONFIG1H        EQU  H'300001'
_CONFIG2L        EQU  H'300002'
_CONFIG2H        EQU  H'300003'
_CONFIG3H        EQU  H'300005'
_CONFIG4L        EQU  H'300006'
_CONFIG5L        EQU  H'300008'
_CONFIG5H        EQU  H'300009'
_CONFIG6L        EQU  H'30000A'
_CONFIG6H        EQU  H'30000B'
_CONFIG7L        EQU  H'30000C'
_CONFIG7H        EQU  H'30000D'

;----- CONFIG1H Options --------------------------------------------------
_OSC_LP_1H           EQU  H'F0'    ; LP oscillator
_OSC_XT_1H           EQU  H'F1'    ; XT oscillator
_OSC_HS_1H           EQU  H'F2'    ; HS oscillator
_OSC_RC_1H           EQU  H'F3'    ; External RC oscillator, CLKO function on RA6
_OSC_EC_1H           EQU  H'F4'    ; EC oscillator, CLKO function on RA6
_OSC_ECIO6_1H        EQU  H'F5'    ; EC oscillator, port function on RA6
_OSC_HSPLL_1H        EQU  H'F6'    ; HS oscillator, PLL enabled (Clock Frequency = 4 x FOSC1)
_OSC_RCIO6_1H        EQU  H'F7'    ; External RC oscillator, port function on RA6
_OSC_INTIO67_1H      EQU  H'F8'    ; Internal oscillator block, port function on RA6 and RA7
_OSC_INTIO7_1H       EQU  H'F9'    ; Internal oscillator block, CLKO function on RA6, port function on RA7

_FCMEN_OFF_1H        EQU  H'BF'    ; Fail-Safe Clock Monitor disabled
_FCMEN_ON_1H         EQU  H'FF'    ; Fail-Safe Clock Monitor enabled

_IESO_OFF_1H         EQU  H'7F'    ; Oscillator Switchover mode disabled
_IESO_ON_1H          EQU  H'FF'    ; Oscillator Switchover mode enabled

;----- CONFIG2L Options --------------------------------------------------
_PWRT_ON_2L          EQU  H'FE'    ; PWRT enabled
_PWRT_OFF_2L         EQU  H'FF'    ; PWRT disabled

_BOREN_OFF_2L        EQU  H'F9'    ; Brown-out Reset disabled in hardware and software
_BOREN_ON_2L         EQU  H'FB'    ; Brown-out Reset enabled and controlled by software (SBOREN is enabled)
_BOREN_NOSLP_2L      EQU  H'FD'    ; Brown-out Reset enabled in hardware only and disabled in Sleep mode (SBOREN is disabled)
_BOREN_SBORDIS_2L    EQU  H'FF'    ; Brown-out Reset enabled in hardware only (SBOREN is disabled)

_BORV_0_2L           EQU  H'E7'    ; Maximum setting
_BORV_1_2L           EQU  H'EF'    ; 
_BORV_2_2L           EQU  H'F7'    ; 
_BORV_3_2L           EQU  H'FF'    ; Minimum setting

;----- CONFIG2H Options --------------------------------------------------
_WDT_OFF_2H          EQU  H'FE'    ; WDT disabled (control is placed on the SWDTEN bit)
_WDT_ON_2H           EQU  H'FF'    ; WDT enabled

_WDTPS_1_2H          EQU  H'E1'    ; 1:1
_WDTPS_2_2H          EQU  H'E3'    ; 1:2
_WDTPS_4_2H          EQU  H'E5'    ; 1:4
_WDTPS_8_2H          EQU  H'E7'    ; 1:8
_WDTPS_16_2H         EQU  H'E9'    ; 1:16
_WDTPS_32_2H         EQU  H'EB'    ; 1:32
_WDTPS_64_2H         EQU  H'ED'    ; 1:64
_WDTPS_128_2H        EQU  H'EF'    ; 1:128
_WDTPS_256_2H        EQU  H'F1'    ; 1:256
_WDTPS_512_2H        EQU  H'F3'    ; 1:512
_WDTPS_1024_2H       EQU  H'F5'    ; 1:1024
_WDTPS_2048_2H       EQU  H'F7'    ; 1:2048
_WDTPS_4096_2H       EQU  H'F9'    ; 1:4096
_WDTPS_8192_2H       EQU  H'FB'    ; 1:8192
_WDTPS_16384_2H      EQU  H'FD'    ; 1:16384
_WDTPS_32768_2H      EQU  H'FF'    ; 1:32768

;----- CONFIG3H Options --------------------------------------------------
_MCLRE_OFF_3H        EQU  H'7F'    ; RE3 input pin enabled; MCLR disabled
_MCLRE_ON_3H         EQU  H'FF'    ; MCLR pin enabled; RE3 input pin disabled

_LPT1OSC_OFF_3H      EQU  H'FB'    ; Timer1 configured for higher power operation
_LPT1OSC_ON_3H       EQU  H'FF'    ; Timer1 configured for low-power operation

_PBADEN_OFF_3H       EQU  H'FD'    ; PORTB<4:0> pins are configured as digital I/O on Reset
_PBADEN_ON_3H        EQU  H'FF'    ; PORTB<4:0> pins are configured as analog input channels on Reset

_CCP2MX_PORTBE_3H    EQU  H'FE'    ; CCP2 input/output is multiplexed with RB3
_CCP2MX_PORTC_3H     EQU  H'FF'    ; CCP2 input/output is multiplexed with RC1

;----- CONFIG4L Options --------------------------------------------------
_STVREN_OFF_4L       EQU  H'FE'    ; Stack full/underflow will not cause Reset
_STVREN_ON_4L        EQU  H'FF'    ; Stack full/underflow will cause Reset

_LVP_OFF_4L          EQU  H'FB'    ; Single-Supply ICSP disabled
_LVP_ON_4L           EQU  H'FF'    ; Single-Supply ICSP enabled

_XINST_OFF_4L        EQU  H'BF'    ; Instruction set extension and Indexed Addressing mode disabled (Legacy mode)
_XINST_ON_4L         EQU  H'FF'    ; Instruction set extension and Indexed Addressing mode enabled

_DEBUG_ON_4L         EQU  H'7F'    ; Background debugger enabled, RB6 and RB7 are dedicated to In-Circuit Debug
_DEBUG_OFF_4L        EQU  H'FF'    ; Background debugger disabled, RB6 and RB7 configured as general purpose I/O pins

Take a look at 2.6.4 in the datasheet (and all around the oscillator section). Here is one of the figures there:

[Acetronics2]

Hi, Glenn

a '2520 config header, just for example.

'*****************************************************************************
'*****************************************************************************
'Config processeur
'*****************************************************************************
'



@   __CONFIG    _CONFIG1H, _IESO_OFF_1H & _OSC_XT_1H & _FCMEN_OFF_1H
@   __CONFIG	_CONFIG2L, _BOREN_OFF_2L & _PWRT_ON_2L
@   __CONFIG    _CONFIG2H, _WDT_OFF_2H & _WDTPS_128_2H



@   __CONFIG    _CONFIG3H, _MCLRE_ON_3H & _LPT1OSC_OFF_3H & _PBADEN_OFF_3H & _CCP2MX_PORTBE_3H
@   __CONFIG    _CONFIG4L, _STVREN_OFF_4L & _LVP_OFF_4L & _DEBUG_OFF_4L & _XINST_OFF_4L



@   __CONFIG    _CONFIG5L, _CP0_OFF_5L & _CP1_OFF_5L
@   __CONFIG    _CONFIG5H, _CPB_OFF_5H & _CPD_OFF_5H
@   __CONFIG    _CONFIG6L, _WRT0_OFF_6L & _WRT1_OFF_6L
@   __CONFIG    _CONFIG6H, _WRTB_OFF_6H & _WRTC_OFF_6H & _WRTD_OFF_6H 
@   __CONFIG    _CONFIG7L, _EBTR0_OFF_7L & _EBTR1_OFF_7L
@   __CONFIG    _CONFIG7H, _EBTRB_OFF_7H 

'*****************************************************************************
'Config TIMERs

OSCCON  = %01100000

'*****************************************************************************
'Config TIMERs

T0CON = %00000010	' 16Bits 1/8 prescaler, Horloge Système, OFF
					' Utilisé pour détection sous regime ou arret
					
T1CON = %00000000	'1/1 prescaler, Quartz 32,768
' *** Géré par Elapsed Timer ***

T3CON = %01110001	' CCP SUR TMR3,1/8 prescaler,Horloge système,ON
					' Mesure de la vitesse
'*****************************************************************************
'Config CCP1 arret CCP2

CCP1CON = %00000101	' Capture sur front montant 

CCP2CON = %00000000	'inhibition module CCP2

'*****************************************************************************
'Inhibition SSP

SSPCON1.5 = 0

'*****************************************************************************
'Inhibition Comparateurs

CMCON = 7

'*****************************************************************************
'Inhibition Reference interne

CVRCON = 0

'*****************************************************************************
'Config Interruptions

INTCON  = %10000000
INTCON2 = %11110000
INTCON3 = %00000000

PIE1    = %00000100
PIE2    = %00000000

IPR1    = %00000001
IPR2	= %00000000

RCON	= %10000000

'*****************************************************************************
'Config ADC
'*****************************************************************************

ADCON0 = %11000000		' 
ADCON1 = %00011100 		' A0 > A2 Vref+ A3, Vref- = Vss 
ADCON2 = %10100110		' Right Just., 8Tad, clock /64

'*****************************************************************************
'*****************************************************************************
'Config et Prepositionnement E/S
'*****************************************************************************

PORTA	= %00110000
PORTB 	= %00010000
PORTC	= %00001000
'PORTD	= 0
'PORTE	= 0

TRISA 	= %00011111
TRISB	= %00000110
TRISC	= %00000111
'TRISD	= %00000000
'TRISE	= %00000000
'

Powerful devices need to configure more registers ... that's it !!!

Alain

[mark_s]

Glen,

Probably a typo:

You said

"..I have a pulldown on MCLR and the LED's are connected with resistors.. I want to use the internal oscillator, and no WDT."

A pulldown (tied to ground) on MCLR will keep the pic from working. I assume, since you said your PIC16's programs function its just a typo and you are using a "pullup" resistor (tied to Vcc) on MCLR. Don't give up!

[Glenn]

Glen,

A pulldown (tied to ground) on MCLR will keep the pic from working. I assume, since you said your PIC16's programs function its just a typo and you are using a "pullup" resistor (tied to Vcc) on MCLR. Don't give up!

Oops, yes, its connected to Vcc with a 10k resistor

[Archangel]

Hi Glenn,
Couple of minor details: In Assembly the ' apostrophe does not work to make a line a comment, you MUST use the semicolon ;
now this line:

..I have a pulldown on MCLR and the LED's are connected with resistors.. I want to use the internal oscillator, and no WDT.

<b>I HAVE NOT</b> checked the data sheet, If you use the MCLR pin as an output, <b>MOST PICS </b>have an Open Collector output, which requires a PullUp resistor, as they can only pull down.
Try this for your osc:
__CONFIG _CONFIG1H, _OSC_INTIO67_1H & _FCMEN_OFF_1H & _IESO_OFF_1H ; enable int osc, disable failsafe osc enable, disable internal external switchover
<b>Ok now I have looked at the data sheet,</b> as for the MCLR pin This is from the data sheet:

The fourth pin of PORTE (MCLR/VPP/RE3) is an input
only pin. Its operation is controlled by the MCLRE Configuration
bit. When selected as a port pin (MCLRE = 0),
it functions as a digital input only pin; as such, it does not
have TRIS or LAT bits associated with its operation.
Otherwise, it functions as the device’s Master Clear
input. In either configuration, RE3 also functions as the
programming voltage input during programming.

INPUT ONLY

[Glenn]

Hi Glenn,
Couple of minor details: In Assembly the ' apostrophe does not work to make a line a

Well, if the ' is before the @ it should work ? or ?

Try this for your osc:
__CONFIG _CONFIG1H, _OSC_INTIO67_1H & _FCMEN_OFF_1H & _IESO_OFF_1H ; enable int osc, disable failsafe osc enable, disable internal external switchover

This gives me..

Error[113] C:\PBP\LTIMERT.ASM 63 : Symbol not previously defined (_OSC_INTIO67
_1H)

..And the usual "deprecated" warning about __CONFIG.

[Archangel]

Well, if the ' is before the @ it should work ? or ?



This gives me..

Error[113] C:\PBP\LTIMERT.ASM 63 : Symbol not previously defined (_OSC_INTIO67
_1H)

..And the usual "deprecated" warning about __CONFIG.

Did you write it @ __CONFIG _CONFIG1H, _OSC_INTIO67_1H & _FCMEN_OFF_1H & _IESO_OFF_1H ; enable int osc, disable failsafe osc enable, disable internal external switchover ?
As for ' , is a PBP compiler directive, whereas ; directs both compiler and assembler

[Glenn]

scalerobotics: Yes, I have looked at that, but still, for example that include mentions:

_BOREN_OFF_2L

..But if I include that in my PBP program I get a "symbol previosly not defined" error from mpasmwin:

Error[113] C:\PBP\LTIMERT.ASM 70 : Symbol not previously defined (_BOREN_OFF_2L)

acetronics: Same with that, a good example is the _BOREN_OFF_2L that does not work ?

Just an example of working configbits for internal oscillator that works on 20MHz would be great, then I could try things after that, but now I cant even get the damned thing to run..

[Archangel]

Just an example of working configbits for internal oscillator that works on 20MHz would be great, then I could try things after that, but now I cant even get the damned thing to run..

Section 2.6 datasheet.
section 2.64 " "
32 mhz is your speed limit using PLL and internal osc.
Set it up in OSCCON register

[Glenn]

Section 2.6 datasheet.
section 2.64 " "
32 mhz is your speed limit using PLL and internal osc.
Set it up in OSCCON register

Well, at maximum I presume ? actually I don't really understand what they mean exactly in that part of the datasheet, I would belive that I set one speed on the oscillator, and then the PLL multiplies it ? then 8x4 would give 32Mhz ? ..Ofcourse that would give me troubles to get excactly 20Mhz then, but still, it would work I think ? (but for exampe, "pause 1000" would not be one second)

Anyway, I could use another clock frequency too, the main reason to use 20Mhz is that I tried the same program on a 16f PIC with no internal oscillator, and then I used a 20Mhz xtal.

Did you write it @ __CONFIG _CONFIG1H, _OSC_INTIO67_1H & _FCMEN_OFF_1H & _IESO_OFF_1H ; enable int osc, disable failsafe osc enable, disable internal external switchover ?
As for ' , is a PBP compiler directive, whereas ; directs both compiler and assembler

I simply wrote:

@ __CONFIG _CONFIG1H, _OSC_INTIO67_1H & _FCMEN_OFF_1H & _IESO_OFF_1H

with no comment at all..