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hw+sw works, now comes the hard part

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Vinzenz Schroeter 2025-04-22 12:44:53 +02:00
parent 9ad1857a64
commit 06efe8bb02
2 changed files with 59 additions and 30 deletions
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34
config.hpp
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@ -20,54 +20,56 @@ constexpr unsigned int SECOND = 1000;
constexpr unsigned int MINUTE = SECOND * 60;
constexpr unsigned int HOUR = MINUTE * 60;
constexpr unsigned int MEASUREMENT_COUNT = 1;
constexpr int MEASUREMENT_DELAY = 10;
constexpr unsigned int MEASUREMENT_COUNT = 3;
constexpr int MEASUREMENT_DELAY = 100;
/// Pots will always be watered below this humidity
constexpr int MIN_HUMIDITY_PERCENT = 10;
constexpr int MIN_HUMIDITY_PERCENT = 30;
/// Pots will never be watered above this humidity
constexpr int MAX_HUMIDITY_PERCENT = 70;
/// the amount of time a valve needs to open/close
constexpr int VALVE_DELAY_MS = 1 * SECOND;
constexpr int VALVE_DELAY_MS = 1 * SECOND / 4;
/// the amount of time the pump needs to start/stop
constexpr int PUMP_DELAY_MS = 1 * SECOND;
constexpr int PUMP_DELAY_MS = 1 * SECOND / 4;
/// the amount of time to water the plot (valve open and pump running)
constexpr int WATER_TIME_MS = 3 * SECOND;
constexpr int WATER_TIME_MS = 1 * SECOND;
/// how long to wait between loops
constexpr int LOOP_DELAY_MS = 1 * SECOND; // TODO set higher once it is working
/// minimum amount of time to wait between watering each pot, even when minimum wetness has been reached
constexpr int MIN_WATERING_INTERVAL_MS = 1 * SECOND; // TODO set higher once it is working
constexpr int MIN_WATERING_INTERVAL_MS = 10 * SECOND; // TODO set higher once it is working
/// maximum amount of time to wait between watering each pot, as long as maximum wetness has not been reaached
constexpr int MAX_WATERING_INTERVAL_MS = 24 * HOUR;
constexpr uint8_t PUMP_PIN = 22;
constexpr uint8_t PUMP_LED_PIN = 23;
constexpr uint8_t PUMP_PIN = 7;
constexpr uint8_t PUMP_LED_PIN = 3;
constexpr uint8_t OK_LED_PIN = 2;
/// Per-pot configuration
constexpr PotConfig POT_CONFIGS[] = {
{
.valve_pin = 2,
.led_pin = 42,
.valve_pin = 23,
.led_pin = 22,
.sensor = {
.pin = A0,
.calibration_dry = 520,
.calibration_wet = 236,
.calibration_dry = 540,
.calibration_wet = 250,
}
},
{
.valve_pin = 3,
.led_pin = 43,
.valve_pin = 25,
.led_pin = 24,
.sensor = {
.pin = A1,
.calibration_dry = 520,
.calibration_wet = 236,
.calibration_wet = 100,
}
},
};

55
drop.ino
View file

@ -17,40 +17,52 @@ void setup() {
pinMode(PUMP_LED_PIN, OUTPUT);
pinMode(PUMP_PIN, OUTPUT);
pinMode(LED_BUILTIN, OUTPUT);
pinMode(OK_LED_PIN, OUTPUT);
set_pump(false);
// link pots to their config
for (unsigned int i = 0; i < POT_COUNT; i++) {
Pot *pot = &pots[i];
pot->config = &POT_CONFIGS[i];
pot->last_watering = 0;
pinMode(pot->config->valve_pin, OUTPUT);
pinMode(pot->config->led_pin, OUTPUT);
set_valve(pot->config->valve_pin, false);
}
}
void loop() {
delay(LOOP_DELAY_MS);
Serial.println("");
Serial.println("LOOP");
digitalWrite(OK_LED_PIN, HIGH);
delay(100);
digitalWrite(OK_LED_PIN, LOW);
for (unsigned int i = 0; i < POT_COUNT; i++) {
Serial.print("Pot ");
Serial.println(i);
per_pot(pots[i]);
Serial.println("");
}
Serial.println("");
delay(LOOP_DELAY_MS);
}
void per_pot(Pot &pot) {
int percentage = get_humidity(pot.config->sensor);
Serial.print(percentage);
Serial.println(F("%"));
if (pot.last_watering + MIN_WATERING_INTERVAL_MS > millis()) {
Serial.println(F("watered recently -> not watering"));
return;
}
int percentage = get_humidity(pot.config->sensor);
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);
@ -87,25 +99,40 @@ int get_humidity(Sensor &sensor) {
int sensorVal {0};
for (unsigned int i = 0; i < MEASUREMENT_COUNT; i++) {
sensorVal += analogRead(sensor.pin);
Serial.print(F("Measurement "));
Serial.print(i);
Serial.print(F(" = "));
Serial.println(sensorVal);
delay(MEASUREMENT_DELAY);
}
sensorVal /= MEASUREMENT_COUNT;
Serial.print(F("Average: "));
Serial.println(sensorVal);
// Sensor has a range of e.g. 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(sensorVal, sensor.calibration_wet, sensor.calibration_dry, 100, 0);
sensorVal = map(sensorVal, sensor.calibration_wet, sensor.calibration_dry, 100, 0);
Serial.print(F("Humidity: "));
Serial.print(sensorVal);
Serial.println(F("%"));
return sensorVal;
}
void set_pump(uint8_t state) {
digitalWrite(PUMP_LED_PIN, state);
digitalWrite(PUMP_PIN, state);
void set_pump(bool on) {
Serial.print("setting pump to state ");
Serial.println(on);
digitalWrite(PUMP_LED_PIN, on ? HIGH : LOW);
digitalWrite(PUMP_PIN, on ? LOW : HIGH);
delay(PUMP_DELAY_MS);
}
void set_valve(uint8_t valve, uint8_t state) {
digitalWrite(valve, state);
void set_valve(uint8_t valve, bool open) {
Serial.print("setting pump on pin ");
Serial.print(valve);
Serial.print(" to state ");
Serial.println(open);
digitalWrite(valve, open ? LOW : HIGH);
delay(VALVE_DELAY_MS);
}