57 lines
1.5 KiB
Arduino
57 lines
1.5 KiB
Arduino
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// manually define all the An ports on ESP32 board
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#if defined(ESP32)
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#define A0 (36)
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#define A1 (39)
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#define A2 (34)
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#define A3 (35)
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#define A4 (32)
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#define A5 (33)
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#endif
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// define the divident of sizeof()'s return value
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#if defined(ESP32)
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#define SIZE_DIV 4 // for esp32, the resolution is doubled than the usual arduino board, so we double the factor, too
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#else
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#define SIZE_DIV 2
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#endif
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#define WAIT_TIME 1000UL
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#define SENSOR1 36
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// FILE *f = fopen("file.txt", "w");
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int pins[] = {A0, A1, A2, A3, A4, A5};
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int i, j;
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unsigned long currTime; // non-blocking time tracker
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void setup() {
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Serial.begin(19200);
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currTime = millis();
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analogReadResolution(12);
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// adcAttachPin(A0);
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// analogSetClockDiv(255);
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}
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void loop() {
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// we might need analogSetAttenuation to make the measurement more accurate and less noisy?
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if (millis() - currTime >= WAIT_TIME) { // non-blocking time delay
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// Serial.println();
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Serial.print("[");
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for (i = 0; i < sizeof(pins)/SIZE_DIV; i++) {
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// float volts = analogRead(pins[i]);
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// float result = volts * 3.3 / 4095;
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// Serial.print(result);
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float volts = analogReadMilliVolts(pins[i]);
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Serial.print(volts);
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// Serial.print(61319 * (3.3/volts - 1));
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if (i != sizeof(pins)/SIZE_DIV - 1) {
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Serial.print(", ");
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}
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}
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Serial.println("]");
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// Serial.println(analogReadMilliVolts(SENSOR1));
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currTime = millis();
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}
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}
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