autoplant/analog_channel_scanner/analog_channel_scanner.ino

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