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Titre: Systèmes à Microcontrôleurs

Auteurs: Christian Dupaty

Ecole: Académie d’Aix-Marseille

Résumé: Objectifs et contenus:

– Découverte de la programmation et des microcontrôleurs
– Connaissance de la numération binaire et hexadécimale, fonctions logiques booléennes.
– Codage des nombres entiers des réels et des caractères.
– Structures des systèmes à microprocesseurs, ALU, périphériques, décodage d’adresses.
– Notions d’algorithme, programmation structurée
– Structures des microcontrôleurs (HAVARD, VON NEUMAN)
– Notions de langage, découverte de l’assembleur
– Structure d’un outil de développement (assembleur, compilateur, linker, simulateur, débugger)
– Domaines d’emploi et principes des interruptions
– Gestion des périphériques, ports parallèles, TIMER
– Etre capable créer et valider un petit programme en assembleur en respectant les règles de programmation structurée
– Etre capable de mettre ne oeuvre un outil de développement logiciel. Rq : les exemples de programmes de ce cours sont écrits en assembleur 8051. Les chapitres sur les périphériques prennent exemple sur le 8051 sauf précision.

Extrait du sommaire:
1. Brève histoire du processeur . 4
2. Introduction : De l’analogique au numérique . 5
2. 1. Deux niveaux électriques : le bit . 6
2. 2. Conventions logiques . 6
2. 3. Immunité au bruit 6
3. Rappels sur la numération en électronique numérique . 7
3. 1. Les opérations 7
3. 1. 1. L’addition 7
3. 1. 2. Les nombres signés : la soustraction 8
3. 2. Les multiplications et les divisions par des puissances de 2 8
3. 3. Les opérations booléennes. . 9
3. 3. 1. Le complément 9
3. 3. 2. La fonction « ET » ou « AND » 9
3. 3. 3. La fonction « OU » ou « OR » . 9
3. 3. 4. La fonction « OU EXCLUSIF » 10
3. 3. 5. Les fonctions de décalages et de rotations . 10
3. 4. Les nombres réels 11
3. 5. Le codage du texte, la code ASCII 12
4. Introduction au traitement programmé . 13
4. 1. Algorithme / Organigramme 13
4. 2. Structures de programmation 14
4. 2. 1. Structures alternatives . 14
4. 2. 2. Structures répétitives : 14
4. 3. Langages de programmation 15
5. Technologie des systèmes à microprocesseur 16
5. 1. Comparatif . 16
5. 2. Lexique 16
5. 3. HARVARD vs VON NEUMAN . 17
5. 4. MicroProcesseur : Organisation structurelle d’un “système minimum” VON NEUMAN . 18
5. 5. Exemple de réalisation d’un décodeur d’adresses pour un bus 64KO 19
5. 5. 1. Décodage par portes logiques . 20
5. 5. 2. Décodage par décodeur intégré : 20
5. 5. 3. Décodage par PAL : . 21
6. Les Microcontrôleurs : . 25
6. 1. Organisation générale (INFINEON-SIEMENS C517A, CPU type INTEL 8051) . 25
6. 2. L’unité centrale 26
6. 3. Ports parallèles 26
6. 4. Ports séries asynchrones 27
6. 5. TIMERS . 28
6. 5. 1. Production de signaux, principe : 28
6. 5. 2. Mesure de durée, principe : 28
7. Le standard INTEL 8051. 29
7. 1. Un évolution du 8051, l’ INFINEON (SIEMENS) C517A . 31
7. 2. Organisation de la mémoire . 32
7. 2. 1. Unité centrale 8051, éléments d’assembleur . 36
7. 2. 2. Modes d’adressage 36
7. 2. 3. Le processeur Booleen : 37
8. Le jeu d’instructions du 8051 : 38
9. Programmation structurée et sous-programmes 41
10. L’assembleur 8051 . 42
10. 1. Utilisation du Linker – la définition des segments . 43
11. L’environnement de développement . 44
12. Interruptions 46
12. 1. Principes 46
12. 2. Masquage et validation 48
12. 3. Exemple de mise en oeuvre des interruptions . 50
13. TIMER. 53
14. Le TIMER 2 58
15. COMPARE sur C517A . 59
Systèmes à Microcontrôleurs
SAM1A- cours 2009-2010. doc 3/52
16. CAPTURE 62
17. ADC sur C517A 63
18. Communications séries 65

Cours Microcontrôleur microprocesseur 21

Télécharger le fichier PDF: Systèmes à Microcontrôleurs

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