initial commit

drop.ino

@@ -0,0 +1,99 @@
+#include <Arduino.h>
+#include "helpers.hpp"
+#include "config.hpp"
+
+typedef struct {
+  PotConfig &config;
+  
+  unsigned long last_watering;
+  // anything changing per pot goes here
+} Pot;
+
+Pot pots[length(POT_CONFIGS)];
+
+void setup() {
+  Serial.begin(9600);
+
+  pinMode(6, OUTPUT);  //Enable
+  pinMode(5, OUTPUT);  //Puls
+  pinMode(13, OUTPUT); //Status LED
+  pinMode(4, OUTPUT);  //Enable6 halten
+  pinMode(2, OUTPUT);  //Puls5-
+  pinMode(3, OUTPUT);  //Direction4-
+
+  // link pots to their config
+  for (unsigned int i = 0; i < length(pots); i++) {
+    pots[i].config = POT_CONFIGS[i];
+
+    // TODO maybe set pinMode for valve and sensor pins?
+  }
+}
+
+void loop() {
+  for (unsigned int i = 0; i < length(pots); i++) {
+    per_pot(pots[i]);
+  }
+  
+  delay(LOOP_DELAY_MS);
+}
+
+void per_pot(Pot &pot) {
+  Serial.println(pot.config.name);
+
+  int sensorVal = analogRead(pot.config.sensor_pin);
+  int percentage = humidity_percentage(sensorVal);
+  Serial.print(sensorVal);
+  Serial.print(F(" -> "));
+  Serial.print(percentage);
+  Serial.println(F("%"));
+
+  if (percentage > MAX_HUMIDITY_PERCENT) {
+    Serial.println(F("too wet -> not watering"));
+  } else if (pot.last_watering + MIN_WATERING_INTERVAL_MS > millis()) {
+    Serial.println(F("watered recently -> not watering"));
+  } else if (percentage < MIN_HUMIDITY_PERCENT) {
+    Serial.println(F("too dry -> watering"));
+    water_pot(pot);
+  } else if (pot.last_watering + MAX_WATERING_INTERVAL_MS < millis()){
+    Serial.println(F("not been watered for a long time -> watering"));
+    water_pot(pot);
+  } else {
+    Serial.println(F("happy plant"));
+  }
+}
+
+void water_pot(Pot &pot) {
+  open_valve(pot.config.valve_pin);
+  start_pump();
+  delay(WATER_TIME_MS);
+  stop_pump();
+  close_valve(pot.config.valve_pin);
+  pot.last_watering = millis();
+}
+
+int humidity_percentage(int sensorValue) {
+  // Sensor has a range of 236 to 520
+  // We want to translate this to a scale or 0% to 100%
+  // More info: https://www.arduino.cc/reference/en/language/functions/math/map/
+  return map(sensorValue, SENSOR_CALIBRATION_WET, SENSOR_CALIBRATION_DRY, 100, 0);
+}
+
+void start_pump() {
+  // TODO start pump
+  delay(PUMP_DELAY_MS);
+}
+
+void stop_pump() {
+  // TODO stop pump
+  delay(PUMP_DELAY_MS);
+}
+
+void open_valve(int valve) {
+  // TODO open valve
+  delay(VALVE_DELAY_MS);
+}
+
+void close_valve(int valve) {
+  // TODO close valve
+  delay(VALVE_DELAY_MS);
+}