111 lines
2.0 KiB
C++
111 lines
2.0 KiB
C++
#include <bitset>
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#include <string>
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// WAS D5 D6 D7
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#define MULTIPLEX_PINA 17
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#define MULTIPLEX_PINB 16
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#define MULTIPLEX_PINC 4
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// WAS A0
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#define ANALOG_PIN 34
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/*
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000 0
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001 1
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010 2
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011 3
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100 4
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101 5
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110 6
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111 7
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*/
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#define SOIL_A 4
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#define SOIL_B 6
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#define WATER_LEVEL_A 0
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#define WATER_LEVEL_B 1
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// Ref https://stackoverflow.com/a/523737/1460422
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#define CHECK_BIT(var,pos) ((var) & (1<<(pos)))
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float referenceVoltage = 3.3;
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void read_analog(int channel) {
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const char* bin = std::bitset<8>(channel).to_string().c_str();
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bool b0 = bin[7] == u'1';
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bool b1 = bin[6] == u'1';
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bool b2 = bin[5] == u'1';
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Serial.print(" binary ");
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Serial.print(bin);
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Serial.print(" b2 ");
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Serial.print(b2);
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Serial.print(" b1 ");
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Serial.print(b1);
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Serial.print(" b0 ");
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Serial.print(b0);
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Serial.print(" ");
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digitalWrite(MULTIPLEX_PINA, b2);
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digitalWrite(MULTIPLEX_PINB, b1);
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digitalWrite(MULTIPLEX_PINC, b0);
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int rawValue = analogRead(ANALOG_PIN);
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float parsedValue = ((float)rawValue) / 1024.0 * referenceVoltage;
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Serial.print(" channel ");
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Serial.print(channel);
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Serial.print(" raw value ");
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Serial.print(rawValue);
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Serial.print(" parsed value: ");
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Serial.print(parsedValue);
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Serial.println("V");
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}
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void setup() {
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Serial.begin(9600);
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Serial.println("Analogue Soil Sensor Test");
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Serial.println("=========================");
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pinMode(MULTIPLEX_PINA, OUTPUT);
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pinMode(MULTIPLEX_PINB, OUTPUT);
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pinMode(MULTIPLEX_PINC, OUTPUT);
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}
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void loop() {
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Serial.print("C0");
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read_analog(0);
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Serial.print("C1");
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read_analog(1);
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Serial.print("C2");
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read_analog(2);
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Serial.print("C3");
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read_analog(3);
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Serial.print("C4");
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read_analog(4);
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Serial.print("C5");
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read_analog(5);
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Serial.print("C6");
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read_analog(6);
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Serial.print("C7");
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read_analog(7);
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// Serial.print("SOIL A: ");
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// read_analog(SOIL_A);
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// Serial.print("SOIL B: ");
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// read_analog(SOIL_B);
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// Serial.print("WATER LEVEL A: ");
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// read_analog(WATER_LEVEL_A);
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// Serial.print("WATER LEVEL B: ");
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// read_analog(WATER_LEVEL_B);
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Serial.println("\n\n\n\n\n");
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delay(5000);
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}
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