52 lines
1.2 KiB
C++
52 lines
1.2 KiB
C++
/**
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* Auteur : Anatole SCHRAMM-HENRY
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* Date : 11/11/2019
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* Programme de test permettant de se familiariser avec les différentes formules U=R*I
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*/
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#include <math.h>
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#define V_STEP 0.000805860 //Volt 3.3/(4096-1)
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const double R_PREC(1471.0); //Ohm
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unsigned int Raw(0.0);
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double Vref(0.0);
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double Iref(0.0);
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double Rvar(0.0);
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char buffer[300];
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void setup() {
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// put your setup code here, to run once:
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Serial.begin(115200);
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pinMode(PA0, INPUT);
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}
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void loop() {
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Raw = analogRead(PA0);
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Vref = rawToVref(Raw); //En Volt
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Iref = Vref / R_PREC; //En Ampère
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Rvar = (3.3-Vref)/Iref;
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// put your main code here, to run repeatedly:
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Serial.println("------------------------------------");
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sprintf(buffer, "%d",Raw);
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Serial.print("Raw : ");Serial.println(buffer);
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sprintf(buffer, "%.6f Volts",Vref);
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Serial.print("Voltage : ");Serial.println(buffer);
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sprintf(buffer, "%.6f Amperes -> %.6f mA",Iref, Iref*1000.0);
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Serial.print("Current : ");Serial.println(buffer);
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sprintf(buffer, "%.6f Ohm",Rvar);
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Serial.print("Resistance : ");Serial.println(buffer);
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Serial.println("------------------------------------");
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delay(1000);
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}
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float rawToVref(float raw)
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{
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return V_STEP * (float)Raw;
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}
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