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View Code? Open in Web Editor NEWPIC18F4550 Interface for AD5253 digital potentiometer
PIC18F4550 Interface for AD5253 digital potentiometer
INTERFACE MICROCONTROLADA PARA O POTENCIÔMETRO DIGITAL AD5254 Marcelo M. S. Souza <[email protected]> Introdução Este projeto implementa, a partir do microcontrolador PIC18F4550, o protocolo de comunicação para o controle de 4 potênciometros digitais (AD5254) e uma interface usuário. O controle dos potênciometros digitais é realizado por comandos enviados através do protocolo i2c. A interface usuário consiste em 3 push buttons e 4 leds. Os leds (LED1, LED2, LED3 e LED4) indicam qual dentre os potenciômetros (POT1, POT2, POT3 e POT4) está habilitado a receber comandos do usuário. Os push buttons possibilitam ao usuário fornecer comandos ao microcontrolador com as seguintes funcionalidades: - SW1 (comando SEL): Seleção do potenciômetro habilitado a responder aos comandos de INC e DEC; - SW2 (comando INC): Incrementa a posição do eixo do potenciômetro habilitado; - SW3 (comando DEC): Decrementa a posição do eixo do potenciômetro habilitado; Referências - Microchip MPLABX integrated development environment https://www.microchip.com/mplab/mplab-x-ide - Microchip PIC18F4550 microcontroller https://ww1.microchip.com/downloads/en/devicedoc/39632e.pdf - Analog Device AD5254 four digital potentiometer https://www.analog.com/en/products/ad5254.html - Proteus design and simulation software https://www.labcenter.com/
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