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- #define MY_RADIO_NRF24
- #define MY_GATEWAY_SERIAL
- #define round(x) ((x)>=0?(long)((x)+0.5):(long)((x)-0.5))
- #define MY_DEBUG
- #define CHILD_ID_BATTERY 0
- #define SLEEP_TIME 600000 // Sleep time between reads (in milliseconds)
- #define STABILIZATION_TIME 500 // Let the sensor stabilize 0.5 seconds before reading
- #define BATTERY_FULL 3000 // 3,000 millivolts when battery is full (assuming 2xAA)
- #define BATTERY_ZERO 1700 // 1,700 millivolts when battery is empty (reqires blown brownout detection fuse, use 2,800 otherwise)
- // This sketch assumes power from 2xAA on Vcc (not RAW). Remove the power led and the voltage regulator for better battery life.
- // Sensors shall be connected to GND and their analog pin. Throw away the middle chip, just use the pitchfork.
- // Number of analog pins for each Arduino model can be seen at https://www.arduino.cc/en/Products/Compare
- // A5 and A6 on most Arduinos cannot be used because they don't have internal pullups
- const int SENSORS[] = {A0, A1, A2, A3, A4, A5}; // Remove the pins that you don't want to use
- #define N_ELEMENTS(array) (sizeof(array)/sizeof((array)[0]))
- long oldvoltage = 0;
- #define RELAY_1 3 // Arduino Digital I/O pin number for first relay (second on pin+1 etc)
- #define NUMBER_OF_RELAYS 1 // Total number of attached relays
- #define RELAY_ON 1 // GPIO value to write to turn on attached relay
- #define RELAY_OFF 0 // GPIO value to write to turn off attached relay
- #include <SPI.h>
- #include <MySensors.h>
- MyMessage moisture_messages[N_ELEMENTS(SENSORS)];
- MyMessage voltage_msg(CHILD_ID_BATTERY, V_VOLTAGE);
- void before()
- {
- for (int sensor = 1, pin = RELAY_1; sensor <= NUMBER_OF_RELAYS; sensor++, pin++) {
- // Then set relay pins in output mode
- pinMode(pin, OUTPUT);
- }
- }
- void setup()
- {
- //gw.begin();
- sendSketchInfo("Plants moisture w bat", "1.2");
- present(CHILD_ID_BATTERY, S_CUSTOM);
- sendSketchInfo("Relay", "1.0");
- for (int sensor = 0; sensor < N_ELEMENTS(SENSORS); sensor++) {
- moisture_messages[sensor].sensor = sensor + 1; // Battery uses child ID 0 so sensors start at 1
- moisture_messages[sensor].type = V_HUM;
- delay(250);
- present(sensor + 1, S_HUM);
- }
- for (int i = 0; i < N_ELEMENTS(SENSORS); i++) {
- pinMode(SENSORS[i], OUTPUT);
- digitalWrite(SENSORS[i], LOW);
- }
- for (int sensor = 1, pin = RELAY_1; sensor <= NUMBER_OF_RELAYS; sensor++, pin++) {
- }
- }
- void receive(const MyMessage &message)
- {
- {
- // We only expect one type of message from controller. But we better check anyway.
- if (message.type == V_STATUS) {
- // Change relay state
- digitalWrite(message.sensor - 1 + RELAY_1, message.getBool() ? RELAY_ON : RELAY_OFF);
- // Store state in eeprom
- saveState(message.sensor, message.getBool());
- // Write some debug info
- Serial.print("Incoming change for sensor:");
- Serial.print(message.sensor);
- Serial.print(", New status: ");
- Serial.println(message.getBool());
- }
- void loop()
- {
- for (int sensor = 0; sensor < N_ELEMENTS(SENSORS); sensor++) {
- pinMode(SENSORS[sensor], INPUT_PULLUP); // "Power on" the sensor and activate the internal pullup resistor
- analogRead(SENSORS[sensor]); // Read once to let the ADC capacitor start charging
- sleep(STABILIZATION_TIME);
- int moistureLevel = (1023 - analogRead(SENSORS[sensor])) / 10.23;
- }
- // Turn off the sensor to conserve battery and minimize corrosion
- pinMode(SENSORS[sensor], OUTPUT);
- digitalWrite(SENSORS[sensor], LOW);
- send(moisture_messages[sensor].set(moistureLevel));
- }
- long voltage = readVcc();
- if (oldvoltage != voltage) { // Only send battery information if voltage has changed, to conserve battery.
- send(voltage_msg.set(voltage / 1000.0, 3)); // redVcc returns millivolts and set wants volts and how many decimals (3 in our case)
- sendBatteryLevel(round((voltage - BATTERY_ZERO) * 100.0 / (BATTERY_FULL - BATTERY_ZERO)));
- oldvoltage = voltage;
- }
- sleep(SLEEP_TIME);
- }
- long readVcc()
- // From http://provideyourown.com/2012/secret-arduino-voltmeter-measure-battery-voltage/
- // Read 1.1V reference against AVcc
- // set the reference to Vcc and the measurement to the internal 1.1V reference
- #if defined(__AVR_ATmega32U4__) || defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
- ADMUX = _BV(REFS0) | _BV(MUX4) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1);
- #elif defined (__AVR_ATtiny24__) || defined(__AVR_ATtiny44__) || defined(__AVR_ATtiny84__)
- ADMUX = _BV(MUX5) | _BV(MUX0);
- #elif defined (__AVR_ATtiny25__) || defined(__AVR_ATtiny45__) || defined(__AVR_ATtiny85__)
- ADMUX = _BV(MUX3) | _BV(MUX2);
- #else
- ADMUX = _BV(REFS0) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1);
- #endif
- delay(2); // Wait for Vref to settle
- ADCSRA |= _BV(ADSC); // Start conversion
- while (bit_is_set(ADCSRA, ADSC)); // measuring
- uint8_t low = ADCL; // must read ADCL first - it then locks ADCH
- uint8_t high = ADCH; // unlocks both
- long result = (high << 8) | low;
- result = 1125300L / result; // Calculate Vcc (in mV); 1125300 = 1.1*1023*1000
- return result; // Vcc in millivolts
- }
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