Configuration 設定的範例 :
[code]
;************************************************************************************
;*CONFIG Setting for PIC16/18 *
;*This text is mainly on the method for the setting of configuration bits with both assembler&C. *
;************************************************************************************

-------------- MPASM for PIC16Fxxx ----------------------------------------------------

;*******************************************************************************************
;*1.To set CONFIG with assembler *
;*With the source code written in assembler the configuration bits can been set by micro __CONFIG *
;*The micro __CONFIG is after with the include file. *
;*******************************************************************************************

;*******************************************************************************************
;*Example 1, CONFIG set for 16F877A *
;*******************************************************************************************
list p=16f877A ; list directive to define processor
#include <p16f877A.inc> ; processor specific variable definitions
;************************************************************************
;*Configuration bits *
;*The __CONFIG directive defines configuration data within the .ASM file. *
;* The labels following the directive are defined in the P16F877A.INC file. *
;*The PIC16F877A Data Sheet explains the functions of the configuration bits. *
;************************************************************************
__CONFIG _CP_OFF & _WDT_OFF & _BODEN_OFF & _PWRTE_ON & _RC_OSC & _WRT_OFF & _LVP_ON & _CPD_OFF

; variable definitions
;your code
;;
END ˙end of program
;**********************************************************************************

------------------- MPASM for PIC18Fxxxx 舊版 -----------------------------------

;**************************************************************************************
;*Example 2, CONFIG set for 18F452. As the configuration bits is more complex than 16F877, *
;*it maps to more bytes in program memory instead of one word. *
;**************************************************************************************
LIST P=18F452 ;directive to define processor
#include <P18F452.INC> ;processor specific variable definitions
;****************************************************************************
;*Configuration bits *
;*The __CONFIG directive defines configuration data within the .ASM file. *
;* The labels following the directive are defined in the P18F452.INC file. *
; *The PIC18FXX2 Data Sheet explains the functions of the configuration bits. *
;*****************************************************************************

__CONFIG _CONFIG1H, _OSCS_OFF_1H & _HS_OSC_1H
__CONFIG _CONFIG2L, _BOR_OFF_2L & _PWRT_OFF_2L
__CONFIG _CONFIG2H, _WDT_OFF_2H
__CONFIG _CONFIG3H, _CCP2MX_OFF_3H
__CONFIG _CONFIG4L, _STVR_OFF_4L & _LVP_OFF_4L & _DEBUG_OFF_4L
__CONFIG _CONFIG5L, _CP0_OFF_5L & _CP1_OFF_5L & _CP2_OFF_5L & _CP3_OFF_5L
__CONFIG _CONFIG5H, _CPB_OFF_5H & _CPD_OFF_5H
__CONFIG _CONFIG6L, _WRT0_OFF_6L & _WRT1_OFF_6L & _WRT2_OFF_6L & _WRT3_OFF_6L
__CONFIG _CONFIG6H, _WRTC_OFF_6H & _WRTB_OFF_6H & _WRTD_OFF_6H
__CONFIG _CONFIG7L, _EBTR0_OFF_7L & _EBTR1_OFF_7L & _EBTR2_OFF_7L & _EBTR3_OFF_7L
__CONFIG _CONFIG7H, _EBTRB_OFF_7H

;******************************************************************************
;Variable definitions
;your code
;;
END; end of program
;******************************************************************************

;**************************** PIC18Fxxxx 新版使用方式 *********************************
; *
; Files required: P18F4520.INC *
; *
;******************************************************************************

LIST P=18F4520 ;directive to define processor
#include <P18F4520.INC> ;processor specific variable definitions

;******************************************************************************
;Configuration bits
;Microchip has changed the format for defining the configuration bits, please
;see the .inc file for futher details on notation. Below are a few examples.



; Oscillator Selection:
CONFIG OSC = LP ;LP
******************************************************

------------------------- Hi-Tech PICC (16Fxxxx) -------------------------------------

;********************************************************
;*2.To set CONFIG with C language *
;********************************************************

;************************************************************************************
;*a. Here is a example for HI-TECH PICC *
;************************************************************************************
//**************************************************************************************
#include <pic.h>
#include <pic168xa.h>

//***************************************************************************************
//*The declaration of __CONFIG() is in pic.h *
//*The __CONFIG(x) directive defines configuration data within is in pic168xa.h *
//***************************************************************************************
__CONFIG(XT&WDTDIS&PWRTEN&BORDIS&LVPDIS&DUNPROT&DEBUGDIS&UNPROTECT);
void main(void)
{
//your code
}
//***************************************************************************************

//****************************************************************************
//*In pic.h the definition of __CONFIG(x) is as follows: *
/*#define __CONFIG(x) asm("\tpsect config,class=CONFIG,delta=2");\ *
asm("\tdw "___mkstr(x)) */
//* pic168xa.h defines all the configuation bit values *
//*#define CONFIG_ADDR 0x2007


--------------------- Hi-Tech PICC18 ------------------------------------------------

****************************************************************************************
//*b.In HI-TECH C18 , use macro __CONFIG(n,x)
//***************************************************************************************
#include <pic18.h>
//***************************************************************************************
//*The declaration of __CONFIG(n,x) is in pic18.h *
//*The __CONFIG(n,x) directive defines configuration data within is in pic18fxx2.h *
//***************************************************************************************
__CONFIG(1,RC) ;
__CONFIG(2,PWRTDIS & WDTPS1 & WDTEN ) ;
__CONFIG(4,STVRDIS) ;

void main(void)
{
//your code
}
//*************************************************************************

//************************************************************************
//*In pic18.h the definition of __CONFIG(n,x) is as follows *
//*#define __CONFIG(n, x) asm("\tpsect config,class=CONFIG");\ *
//* asm("global config_word" ___mkstr(n)); \ *
//* asm("config_word" ___mkstr(n)":"); \ *
//* asm("\torg ("___mkstr(n)"-1)*2"); \ *
//* asm("\tdw "___mkstr(x)) *
//* pic18fxx2.h defines the configuration bit values, *
//************************************************************************

-------------------- MPLAB C18 ----------------------------------------

;*******************************************************************************
;*3.For MPLAB C18 V2.40 or higher, use #pragma config directive *
;*for example *
//******************************************************************************
#include <p18f452.h>
//*******************************************************************************
//*Configuration settings may be specified with multiple #pragma config directives. *
//*MPLAB C18 verifies that the configuration settings specified are valid for the processor*
//*for which it is compiling *
//*The labels following the directive "pragma config" are defined in the P18F452.h file. *
//*******************************************************************************
#pragma config OSC=HS
#pragma config PWRT=ON
#pragma config BOR=OFF, BORV=42
#pragma config WDT=OFF
#pragma config CCP2MUX=ON
#pragma config STVR=OFF, LVP=OFF, DEBUG=OFF
#pragma config CPD=OFF

void main(void)
{
//your code
}
//********************************************************************************
{/code]

想請教一個問題
就是我用ICD2燒錄PIC18F452的時候
按下燒錄鍵的時候
MPLAB IDE的Output/ICD2視窗
就會顯現目前的燒錄狀況
------------------------------------
MPLAB ICD 2 Ready
Programming Target...
...Erasing Part
...Programming Program Memory (0x0 - 0x76AF)
Verifying...
...Program Memory
...Verify Succeeded
...Programming succeeded
------------------------------------------
有的時候裡面會多顯示"Programing Configuration bit..."
有的時候卻不會
想請問為什麼呢?
要如何設定才能讓ICD2燒錄的時候
也順便燒Configuration bit 並顯現訊息
.
因為我燒時候
如果ICD2沒有顯示"Programing Configuration bit..."的話
燒好的PIC18F452執行時,會不斷地自己Reset
可是如果燒的時候
ICD2視窗有顯示"Programing Configuration bit..."的話
就不會發生PIC18F452執行時會不斷地自己Reset問題
想請教一下
這個問題應該如呵解決呢?
謝謝,感恩!