因為PIC18Fxxxx 的種類眾多，單是ADC就分成很多種，所以使用ADC前要先知道PIC編號及相對應的函數庫 Version，以 PIC18F4520 為例使用的是 ADC_V5　的版本。其實查一下 C:\MCC18\doc\periph-lib 底下的 AD Converter.html 即可了解。

犯了一個新手常見的錯誤!

兩個source file 只改了一個 #include <18f4520.h>

就出現 一卡車的錯誤!

=================================

w401 有adc的範例
舊的
void InitializeAD(void)
{
OpenADC(ADC_FOSC_32 & ADC_RIGHT_JUST & ADC_1ANA_0REF,
ADC_CH0 & ADC_INT_OFF);

}


改成
void InitializeAD(void)
{
OpenADC( ADC_FOSC_32 &
ADC_RIGHT_JUST &
ADC_12_TAD,
ADC_CH0 &
ADC_REF_VDD_VSS &
ADC_INT_OFF,12 );
}

就沒問題, 可以仔細練習!

謝謝! FAE

先解決 Error 的部份，因為找不到該元件的h檔，所以那些有使用的週邊名稱找不到，檢查一下 include H 檔的路徑。請在Project options 下設定一下路徑。

Attach file:

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更新 C18 V3.3 就有 periph 目錄
依 ad converter 說明資料 EX3-1,EX3-2 修正 ok!

==============================

w401 EX-4 有出現兩個Warning

// LCD_ItoA(AD_Temp); // Show 10-bit A/D Decimal Valum on LCD

itoa ( AD_Temp , ASCII_Buf ) ; //75
putsLCD(ASCII_Buf) ; //76

// LCD_Update=1000;

D:\DN_2009\C\W401 Answer\Ans4\ex4.c:75:Warning [2054] suspicious pointer conversion
D:\DN_2009\C\W401 Answer\Ans4\ex4.c:76:Warning [2054] suspicious pointer conversion

還有一卡車 [1109]error

C:\mcc18\h\p18f4520.h:51:Error [1109] type mismatch in redeclaration of 'PORTAbits'
C:\mcc18\h\p18f4520.h:84:Error [1109] type mismatch in redeclaration of 'PORTBbits'
C:\mcc18\h\p18f4520.h:120:Error [1109] type mismatch in redeclaration of 'PORTCbits'
C:\mcc18\h\p18f4520.h:179:Error [1109] type mismatch in redeclaration of 'PORTEbits'
C:\mcc18\h\p18f4520.h:324:Error [1109] type mismatch in redeclaration of 'DDREbits'
C:\mcc18\h\p18f4520.h:400:Error [1109] type mismatch in redeclaration of 'PIE2bits'
C:\mcc18\h\p18f4520.h:417:Error [1109] type mismatch in redeclaration of 'PIR2bits'
C:\mcc18\h\p18f4520.h:434:Error [1109] type mismatch in redeclaration of 'IPR2bits'
C:\mcc18\h\p18f4520.h:465:Error [1109] type mismatch in redeclaration of 'RCSTAbits'
C:\mcc18\h\p18f4520.h:476:Error [1109] type mismatch in redeclaration of 'TXSTAbits'
C:\mcc18\h\p18f4520.h:597:Error [1109] type mismatch in redeclaration of 'CCP2CONbits'
C:\mcc18\h\p18f4520.h:618:Error [1109] type mismatch in redeclaration of 'CCP1CONbits'
C:\mcc18\h\p18f4520.h:641:Error [1109] type mismatch in redeclaration of 'ADCON1bits'
C:\mcc18\h\p18f4520.h:664:Error [1109] type mismatch in redeclaration of 'ADCON0bits'
C:\mcc18\h\p18f4520.h:726:Error [1109] type mismatch in redeclaration of 'SSPSTATbits'
C:\mcc18\h\p18f4520.h:738:Error [1109] type mismatch in redeclaration of 'T2CONbits'
C:\mcc18\h\p18f4520.h:757:Error [1109] type mismatch in redeclaration of 'T1CONbits'
C:\mcc18\h\p18f4520.h:779:Error [1109] type mismatch in redeclaration of 'RCONbits'
C:\mcc18\h\p18f4520.h:852:Error [1109] type mismatch in redeclaration of 'LVDCONbits'
C:\mcc18\h\p18f4520.h:869:Error [1109] type mismatch in redeclaration of 'OSCCONbits'
C:\mcc18\h\p18f4520.h:957:Error [1109] type mismatch in redeclaration of 'INTCON2bits'
C:\mcc18\h\p18f4520.h:980:Error [1109] type mismatch in redeclaration of 'INTCONbits'
C:\mcc18\h\p18f4520.h:1009:Error [1109] type mismatch in redeclaration of 'STKPTRbits'
Halting build on first failure as requested.

要怎麼解決?

可能你的 c18 版本太舊了，重先抓一下 C18 v3.0　
http://www.microchip.com/stellent/idc ... Id=1406&dDocName=en010014

如果妳是使用正式版就下載 Upgrade Version.
如果是試用版，下載 Evaluation version

需先登記後才可下載。

引言

到這裡找一下怎樣使用 ADC 的說明:
C:\MCC18\doc\periph-lib\AD Converter.htm

注意 ADC 函數有眾多版本，PIC18F8722 式在V5 的版本。請參考V5 的函數使用說明。


2.4.3 OpenADC (ADC_V3, 4, 5, 6)
For ADC_V3, ADC_V4, ADC_V5 and ADC_V6

Function:
Configure the A/D convertor.

Include:
adc.h

Prototype:
void OpenADC(unsigned char config,

unsigned char config2 ,

unsigned char portconfig);


==============================================================

我的 C:\mcc18\doc 之下只有3個html help file 及3個C18 的pdf
所以不知道ADC V1~V9 在哪裡

C18 C complier libraries.pdf p.9~ P15 有一些資料沒看懂?
我正在學C ,請版主修改w401 ex:3-1 範例為pic18f4520

void InitializeAD(void)
{
OpenADC( ADC_FOSC_32
& ADC_LEFT_JUST
& ADC_1ANA_0REF,
ADC_CH0
& ADC_INT_OFF );
}

新手 RUN C, 敬請包涵 !

順便也把這篇看完，這樣就知道其中的差異性:
PIC18F452 → PIC18F4520 Migration
http://ww1.microchip.com/downloads/en/DeviceDoc/39647a.pdf

請參考這篇，問題是一樣的

http://www.microchip.com.tw/modules/n ... t_id=26506#forumpost26506

最進剛購入app001 ver.3 MCU 為18F4520

安裝W401的教材是18F452, MPLAB 8.3 及C18 v3.11
device 18f452設定不變 c18 都未產生錯誤


ex3-1.mcp,ex3-2.mcp
將deive 改為18f4520, lkr 改為18f4520i.lkr
改 #include <p18f4520.h> 就出現錯誤

D:\Tools\Microchip\Answer WAP001\Ans3-2\ex3-2.c:46:Error [1105] symbol 'ADC_1ANA_0REF' has not been defined
D:\Tools\Microchip\Answer WAP001\Ans3-2\ex3-2.c:46:Error [1203] too few arguments in function call
Halting build on first failure as requested.

w401的範例所有含 adc.h 都有問題

請問版主要如何修正

謝謝!