Installation du compilateur dans l’environnement MPLAB
Installer le compilateur HI-TECH C18 sur le disque dur. Pour le réinstaller : Desintaller PICC8 HI-TECH Editer la base de registre par menu démarrer -> executer -> regedit Rechercher et effacer l'entrée HKEY_LOCAL_MACHINE\SOFTWARE\HI-TECH Réinstaller PICC18 .... C18 fonctionne 20 jours Sous WIN2000 ou XP il n’est utile de redémarrer l’ordinateur Exécuter MPLAB Dans le menu PROJECT cliquer INSTALL LANGUAGE TOOLS Dans la suite HI-TECH PICC18 inscrire le même chemin d’installation de PICC18.EXE pour les trois outils Compiler, Assembler, Linker.
Le compilateur C inclut la notion de projet qui permet entre autre de compiler ensemble et avec des paramètres communs des fichiers d’origines différentes (C, ASM) MPLAB offre la possibilité de ne compiler qu’un seul fichier source (ASM ou C) (ALT-F10) et donc de ne pas construire systématiquement un projet.
La librairie PIC18.h (et librairies associées pic18fxx2.h) Elle contient toutes les définitions des registres et bits des PIC18. Exemples de définitions dans pic18fxx2.h : @ retourne une adresse static near unsigned char TRISC @ 0xF94; static near unsigned char TRISB @ 0xF93; static near unsigned char TRISA @ 0xF92; static near unsigned char LATC @ 0xF8B; static near unsigned char LATB @ 0xF8A; static near unsigned char LATA @ 0xF89; static volatile near unsigned char PORTC @ 0xF82; static volatile near unsigned char PORTB @ 0xF81; static volatile near unsigned char PORTA @ 0xF80; #if defined(_18F442) || defined(_18F452) static volatile near unsigned char TRISE @ 0xF96; static near unsigned char TRISD @ 0xF95; static near unsigned char LATE @ 0xF8D; static near unsigned char LATD @ 0xF8C; static volatile near unsigned char PORTE @ 0xF84; static volatile near unsigned char PORTD @ 0xF83; #endif //Latch B LATB static near bit LB0 @ ((unsigned)&LATB*8)+0; static near bit LB1 @ ((unsigned)&LATB*8)+1; static near bit LB2 @ ((unsigned)&LATB*8)+2; static near bit LB3 @ ((unsigned)&LATB*8)+3; static near bit LB4 @ ((unsigned)&LATB*8)+4; static near bit LB5 @ ((unsigned)&LATB*8)+5; static near bit LB6 @ ((unsigned)&LATB*8)+6; static near bit LB7 @ ((unsigned)&LATB*8)+7; //Alternate definitions static near bit LATB0 @ ((unsigned)&LATB*8)+0; static near bit LATB1 @ ((unsigned)&LATB*8)+1; static near bit LATB2 @ ((unsigned)&LATB*8)+2; static near bit LATB3 @ ((unsigned)&LATB*8)+3; static near bit LATB4 @ ((unsigned)&LATB*8)+4; static near bit LATB5 @ ((unsigned)&LATB*8)+5; static near bit LATB6 @ ((unsigned)&LATB*8)+6; static near bit LATB7 @ ((unsigned)&LATB*8)+7;
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