mirror of
https://github.com/timmbogner/Farm-Data-Relay-System
synced 2024-11-10 07:10:42 +00:00
118 lines
3.6 KiB
C++
118 lines
3.6 KiB
C++
// FARM DATA RELAY SYSTEM
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//
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// Gypsum-based Soil Moisture Sensor
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//
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// Uses a Ezsbc.com Dev board, a Kisssys moisture sensor board, and a DS3231 RTC.
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// Deep sleep current is less than 20µA.
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// https://www.printables.com/model/176752-gypson-water-sensor
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#define DEBUG
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#define CREDENTIALS
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#include "fdrs_sensor_config.h"
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#include <fdrs_node.h>
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#include <RTClib.h>
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RTC_DS3231 rtc;
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#define BUTTON_PIN_BITMASK 0x100000000 // 2^32 in hex the pin that is connected to SQW
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#define CLOCK_INTERRUPT_PIN 32 // yep same pin
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//#define SupplyPin 33 // power to DS3231
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#define BatteryReadPin 35 // read battey voltage on this pin
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const int FreqIn1 = 18; // gpio32
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const int FreqPower = 19;
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const int RTCPower = 25;
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volatile uint16_t Freq1 = 0;
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static uint16_t FreqOut1;
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void SensorInt1() {
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// If the pin is Rising, increment counter
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Freq1++;
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};
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void setup() {
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beginFDRS();
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DBG(__FILE__);
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pinMode(FreqIn1, INPUT);
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pinMode(CLOCK_INTERRUPT_PIN, INPUT_PULLUP); // On deep sleep the pin needs and external 330k pullup
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pinMode(RTCPower, OUTPUT); // for the SQW pin to stay high when RTC power is removed
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digitalWrite(RTCPower, HIGH); // DS3231 needs the SQW pullup removed on the board to
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pinMode(FreqPower, OUTPUT); // lower the deepsleep current by 60ua's
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digitalWrite(FreqPower, HIGH);
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Freq1 = 0;
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delay(50);
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Wire.begin(13, 14); // moved from 21 22 normal I2C pins because it allows me to set these pins to input later
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if (!rtc.begin()) {
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DBG("Couldn't find RTC!");
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Serial.flush();
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while (1) delay(10);
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}
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if (rtc.lostPower()) {
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// this will adjust to the date and time at compilation
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rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
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}
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rtc.disable32K(); // Don't use this so we shut it down on the board
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// set alarm 1, 2 flag to false (so alarm 1, 2 didn't happen so far)
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// if not done, this easily leads to problems, as both register aren't reset on reboot/recompile
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rtc.clearAlarm(1);
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rtc.clearAlarm(2);
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// stop oscillating signals at SQW Pin
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// otherwise setAlarm1 will fail
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rtc.writeSqwPinMode(DS3231_OFF);
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// turn off alarm 2 (in case it isn't off already)
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// again, this isn't done at reboot, so a previously set alarm could easily go overlooked
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rtc.disableAlarm(2);
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// for one second we count the pulses and get our moisture reading in pps
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attachInterrupt(FreqIn1, SensorInt1, RISING);
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delay(1000); // delay in ms is 1 seconds-- not the most accurate way to do this but more than accurate enough for our low frequency and 10 second read
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FreqOut1 = Freq1; // our frequency * 10
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detachInterrupt(FreqIn1); // only reading once so turn off the interrupt
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if (rtc.alarmFired(1)) {
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rtc.clearAlarm(1);
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Serial.println("Alarm cleared");
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}
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float supply = analogRead(BatteryReadPin) * .001833;
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DBG("WaterSensor 1 = " + String(FreqOut1));
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DBG("Supply Voltage = " + String(supply));
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loadFDRS(FreqOut1, SOIL_T);
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loadFDRS(supply, VOLTAGE_T);
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sendFDRS();
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// Lowers SQW int pin32 every 10 seconds
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rtc.setAlarm1(DateTime(0, 0, 0, 00, 00, 10), DS3231_A1_Second); //DateTime (year,month,day,hour,min,sec)
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esp_sleep_enable_ext1_wakeup(BUTTON_PIN_BITMASK, ESP_EXT1_WAKEUP_ALL_LOW);
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char date[10] = "hh:mm:ss";
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rtc.now().toString(date);
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Serial.println(date); // Print the time
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Serial.println("Going to sleep soon");
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// prepare for low current shutdown
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digitalWrite(FreqPower, LOW);
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digitalWrite(RTCPower, LOW);
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pinMode(13, INPUT);
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pinMode(14, INPUT);
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esp_deep_sleep_start();
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}
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void loop() {
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// nuttin honey
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}
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