初始化提交
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/*
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* PCF8591 Analog Port Expand
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* Production of a sinusoïdal signal using a PCF8591 module
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*
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* by Yves Pelletier <http://electroniqueamateur.blogspot.com>
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*
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* http://electroniqueamateur.blogspot.com/2019/01/pcf8591-et-esp8266-ou-arduino.html
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*
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*
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* PCF8574 ----- Esp32
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* A0 ----- GRD
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* A1 ----- GRD
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* A2 ----- GRD
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* SDA ----- A4
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* SCL ----- A5
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*
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*
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*/
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#include "PCF8591.h" // bibliothèque https://github.com/xreef/PCF8591_library
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#define PCF8591_I2C_ADDRESS 0x48 //adresse i2c du module PCF8591
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PCF8591 pcf8591(PCF8591_I2C_ADDRESS);
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int compteur;
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void setup()
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{
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pcf8591.begin();
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}
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void loop(){
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pcf8591.analogWrite(100 + 100 * sin(2*3.1416*compteur/200) ); // sinus
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// pcf8591.analogWrite(compteur ); // dent de scie
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compteur++;
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if (compteur > 200){
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compteur = 0;
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}
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delay(1);
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}
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