24 lines
610 B
C
24 lines
610 B
C
#include <Arduino.h>
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const float MinimalSpannung = 2.85;
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float korectur = 1.02910;
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char floatString[15] = {0};
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float AKKU;
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float getBattery(float kor = 1.000)
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{
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#if (NOBATT == 1)
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Serial.print("Batterie:\t\t 3.05 V\n");
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return 3.05;
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#endif
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float valA0 = analogRead(A0);
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valA0 = valA0 * 3.7; // (R1 + r1 + r2) / r2
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// r1 und r2 Spannungsteiler
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// r1 = 270k, r2 = 100k
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// Spannungsbereich = 5.2 Volt
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valA0= valA0 / 1024;
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valA0 = valA0 * kor;
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dtostrf(valA0,7,2,floatString);
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Serial.printf("Batterie:\t\t %s V\n", floatString);
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return valA0;
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} |