| Titre : | Distributed embedded system |
| Auteurs : | Abderrahim Dahane, Auteur ; Hicham Ghezal, Auteur ; Abderrazak Debilou, Auteur |
| Type de document : | Monographie imprimée |
| Editeur : | Biskra [Algerie] : Université Mohamed Kheider, 2009/2010 |
| Format : | 65 p. / 35/20 |
| Langues: | Anglais |
| Langues originales: | Anglais |
| Résumé : |
A distrubbeteb embedde system consist of AVR microcontrollers,each microcontroller linked with the other by communication bus (UART) .A microcontroller can acheive any task when it is loading with a program according to ISP protocol.
Which we can say that microcontroller is ‘‘embedded controller’’ . Add for this the importance of I2C protocol in this project that we can connect many of the sensors by only two wires (SDA and SCL) .That the accessoiries of I2C protocol become integrated in more of the devices in order to facilitate the instalation and work sumply. |
| Sommaire : |
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Contents Dedicate ...................................................................................................................... i Acknowledgments....................................................................................................... ii Abstract....................................................................................................................... iii Version Abrégée.........................................................................................................iv Contents......................................................................................................................v List of Figures ...........................................................................................................ix List of Tables...........................................................................................................xi Glossary ....................................................................................................................xii References ..................................................................................................................xiv I. General Introduction : I.1 EMBEDDED Systems.................................................................................................. 1 • I. 1.1: What is an EMBEDDED SYSTEM?. ................................................................ 1 • I. 1.2: Characteristics • I. 1.3: User interface .................................................................................................... 2 .......................................................................... ........................ 2 • I. 1.4: Interrupt controlled system I.2: DISTRIBUTED Systems ............................................................................................... 4 ................................................................................ 3 • I.2.1: What is a DISTRIBUTED Systems ............................................................... 4 • I. 2.2: Why build a distributed system? . ................................................................... 4 • I. 2.3: Characteristics I.3 OVERVIEW ................................................................................................................. 6 ................................................................................................. 4 vi II. AVR Microcontroller : II. 1 MICROCONTROLLER .............................................................................................. 7 • II. 1.1: INTRODUCTION ................................................................................................. 7 • II. 1.2: What is an AVR Microcontroller? ................................................................... 7 • II. 1.3: Features ........................................................................................................... 8 • II. 1.4: Block Diagram of AT-tiny 2313 ..................................................................... 9 • II. 1.5: Pin Description ............................................................................................. 10 • II. 1.6: Pin Configurations ......................................................................................... 11 II. 2 : AVR CPU Core ......................................................................................................... 12 • II. 2.1: PRIORITY INTRODUCTIN ............................................................................... 12 • II. 2.2: Architectural Overview .................................................................................. 12 • II. 2.3: General Purpose Register File ...................................................................... 14 • II. 2.4: The X-register, Y- register, and Z-register ..................................................... 15 • II. 2.5: Stack Pointer .................................................................................................. 15 • II. 2.6: AVR ATtiny2313 Memories ......................................................................... 16 II. 2.6. 1: Flash Memory ........................................................................................ 16 II. 2.6. 2: SRAM Data Memory ............................................................................. 17 II. 2.6. 3: EEPROM Data Memory ........................................................................ 17 • II. 2.7: Input / Output –PORTS ................................................................................. 18 II. 3 : AVR PROGRAMING ............................................................................................... 19 • II. 3.1: I/O port programming: (Using “CODE-VISION”) ...................................... 19 • II.3.2: TIMER/COUNTER Configuration ..................................................................... 20 II. 4 : CONCLUSION ......................................................................................................... 23 vii II. Communication Buses : III. 1: INTRODUCTION ................................................................................................... 24 III. 2: I²C BUS ................................................................................................................. 25 • III. 2.1: Breif Introductgion ..................................................................... 25 • III. 2.2: Basic Characteristics ................................................................. 25 • III. 2.3: I2C serial Interface .................................................................... 26 • III. 2.4: The I2C sequences .................................................................... 26 • III. 2.5: START and STOP conditions ................................................... 27 • III. 2.6: The I2C Master Transmit .......................................................... 27 • III. 2.7: The I2C Master Receiver ......................................................... 28 • III. 2.8: Inside the box ........................................................................... 28 • III. 2.9: Communication .......................................................................... 28 • III. 2.10: Data transfer on the I2C-bus ................................................... 30 • III. 2.11: Clock synchronization ............................................................ 30 • III. 2.12: Acknowledge / NOT-Acknowledge ....................................... 31 • III. 2.13: Arbitration ...................................................................................... 32 • III. 2.14: The AVR TWI (I2C) Module ...................................................... 33 • III. 2.15: Control Unit ................................................................................... 34 • III. 2.16: SCL and SDA Pins ....................................................................... 35 • III. 2.17: OVERVIEW ........................................................................... 35 III. 3: UART BUS .............................................................................................................. 36 • III. 3.1: Brief Introduction .............................................................. 36 • III. 3.2: Features .............................................................................. 36 • III. 3.3: UART Transmitter in AVR ............................................... 37 • III. 3.4: The UART receiver in AVR .............................................. 37 • III. 3.5: USART Block Diagram ..................................................... 38 • III. 3.6: Other UART Functions ...................................................... 39 • III. 3.6: Other UART Functions ...................................................... 39 • III. 3.7: What is RS-232.................................................................... 39 viii III. 4 : In-System Programming ......................................................................................... 41 • III. 4.1: Brief Introduction ........................................................................ 41 • III. 4.2: How does ISP works? ..................................................................... 41 III. 5: Conclusion .................................................................................................................. 43 IV. PROJECT DESCRIPTION: IV. 1: GENERAL DESCRIPTION ................................................................................... 44 • IV. 1.1: INTRODUCTION .............................................................................. 44 • IV. 1.2: OBJECTIVE and FUNCTIONING ............................................ 44 IV. 2: PROGRAM USING (CODE-VISION) ............................................................... 46 IV. 3: PROJECT PARTS ................................................................................................ 50 • IV. 3.1: POWER SUPPLY for the circuit ............................................. 51 • IV. 3.2: ISP PROGRAMMER INTERFACE ......................................... 52 IV. 3.2: 1: Introduction ................................................................... 52 IV. 3.2: 2: HARDWARE ................................................................ 52 • IV. 3.3: GLOBAL COMMUNICATION SYSTEM ......................... 54 First circuit (1st Second circuit (2microcontroller ) ..................................................... 55 nd Third circuit (3 microcontroller ) ............................................... 61 rd Fourth circuit (4microcontroller ) ................................................... 58 th microcontroller ) .................................................. 59 IV. 4 : DEVICES CONNECTED ....................................................................................... 18 • IV. 4.1: (TCN75) Two Wire Serial Temperature Sensor ........................ 61 • IV. 4.2: DS1307 (Real Time Clock) ....................................................... 62 • IV. 4.3: LCD display .............................................................................. 63 IV. 5: CONCLUSION ............................................................................................... 64 V. GENERAL CONCLUSION ........................................................................... 65 |
Disponibilité (2)
| Cote | Support | Localisation | Statut | Emplacement | |
|---|---|---|---|---|---|
| M/0499 | Memoire ingenieur | BIB.FAC.ST. | Empruntable | Salle de mémoires et de théses | |
| M/0499 | Memoire ingenieur | BIB.FAC.ST. | Empruntable | Salle de mémoires et de théses |
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