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samenvatting_microcontrollers
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samenvatting van microcontrollers
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MicrocontrollersSamenvatting
Semester 1
2021-2022
Inhoud
Arduino kennismaking ............................................................................................................................. 2
Wat is een microcontroller.................................................................................................................. 2
Structuur en syntax ............................................................................................................................. 2
Variabelen ........................................................................................................................................... 3
Input/Output ........................................................................................................................................... 4
Interfaces ............................................................................................................................................. 4
Seriële communicatie .............................................................................................................................. 5
Werking ............................................................................................................................................... 5
Communicatie tussen terminal en computer ..................................................................................... 6
Werking op arduino............................................................................................................................. 6
Seriële communicatie (vervolg) ............................................................................................................... 7
RS-485.................................................................................................................................................. 7
I²C: Inter IC connectivity ...................................................................................................................... 8
WS2812 RGB led .................................................................................................................................. 8
Encoders en servo’s ................................................................................................................................. 9
Encoders .............................................................................................................................................. 9
Servo .................................................................................................................................................. 10
RC servomotor ............................................................................................................................... 10
Leonardo Voeding – liquid Crystal Display ............................................................................................ 10
Liquid crystal Display (LCD) ............................................................................................................... 11
Initialisatie ..................................................................................................................................... 11
Bibliotheken .......................................................................................................................................... 12
Stappenmotor ....................................................................................................................................... 12
Eigenschappen................................................................................................................................... 12
Soorten .............................................................................................................................................. 12
Aansluiting ......................................................................................................................................... 13
1
, Arduino kennismaking
Wat is een microcontroller
• Kleine “dedictated” computer zonder besturingsysteem
o Programma ➔ microcontroller ➔Eén proces
• Beperkt in mogelijkheden
o Geheugen, snelheid, …
o K/MHz
o Kb (opslag als geheugen)
o Een functie
o Goedkoop
• Ingebouwde I/O
o Invoer: Sensoren
o Uitvoer: Actuatoren
o Wel fysieke sturing
• Komt overal in voor
• Velen families
o 8051: industrieel
o AVR: arduino omgeving
o PIC: huis, tuin en keuken omgeving
• Programeren
o Low Level
▪ Op niveau van controller
▪ Abstract
▪ Zelf alles definieren
▪ Moeilijk te debuggen
▪ Snelste uitvoering
o High level
▪ Op niveau programmeur
▪ Minder abstract
▪ Voorgedefinieerde structiuren
▪ Gemakkelijk te debuggen
▪ Tragere uitvoering (valt mee)
• Verzamelnaam ontwikkelplatform en dus zelf geen microcontroller
Structuur en syntax
Hoe wordt het opgebouwd
• Geschreven in C taal
• Opgebouwd uit functies
o Setup() en Loop()
Wat is een functie
• Een stuk code dat volledig autonoom werkt
2
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