554 lines
18 KiB
Arduino
554 lines
18 KiB
Arduino
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/*
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* CAMETEO project
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*
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* This is a personnal project of weather station with
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* automatic photo taking.
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* This code is the weather station part and is meant
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* to be run on a PJRC Teensy 3.2 board.
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*
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* Author : Arofarn
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*
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* Licence : GPL v3
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*
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*/
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/*
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* LIBRARIES
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*/
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//Protocols
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#include <Wire.h> // library used with I2C protocol
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#include <SPI.h> // SPI protocol
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//Teensy3.x Real Time Clock
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#include <TimeLib.h>
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//SD card
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#include <SD.h>
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// Sensors
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#include <Adafruit_Sensor.h> // Generic
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#include <Adafruit_BME280.h> // BME280
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#include <PWFusion_AS3935.h>
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//GPS
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//#include <Adafruit_GPS.h> // Adafruit Ultimate GPS
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#include <TinyGPS.h> //Builtin GPS lib
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/*
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* DEFINE
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* &
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* DECLARE
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*/
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//Special characteres
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#define DEGREE (char)176 //degree symbol in ISO 8859-1
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#define DEGREE_LCD (char)222 //degree symbol for lcd display
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// Pins used
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#define RX1_PIN 0 // Raspberry Pi2 serial comm. - Hard wired
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#define TX1_PIN 1 // Raspberry Pi2 serial comm. - Hard wired
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#define RPI_PWR_PIN 2 // Raspberry Pi power control - Hard wired
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#define AS3935_CS_PIN 4 // SPI SD CS - Hard wired
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#define GPS_EN_PIN 6 // GPS ENable
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#define RX3_PIN 7 // GPS serial comm.
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#define TX3_PIN 8 // GPS serial comm.
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#define AS3935_IRQ_PIN 9 // Interrupts from AS3935 lightning sensor
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#define SD_CS_PIN 10 // SPI CS AS3935 lightning sensor
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#define SPI_DI_PIN 11 // SPI MOSI AS3935 lightning sensor
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#define SPI_DO_PIN 12 // SPI MISO AS3935 lightning sensor
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#define SPI_CK_PIN 13 // SPI clock SD + AS3935 lightning sensor + built-in LED
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#define BATT_VOLT_PIN 16 // Battery voltage monitoring (Analog Input)
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#define LOW_BATT_PIN 17 // Low Battery signal from charger (digital input)
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#define I2C_SDA_PIN 18 // I2C SDA BME280 sensor
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#define I2C_SCL_PIN 19 // I2C SCL BME280 sensor
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#define GPS_BUT_PIN 20 // GPS switch power control (unused)
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//I2C addresses
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//#define TCN75A_ADDR 0x00 //Sensor I2C bus address
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//#define BMP180_ADDR 0x77
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//Serial over USB communication
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#define SERIAL_PORT Serial
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#define SERIAL_BAUD_RATE 9600
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//Raspberry Pi Serial Comm.
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#define RPI_SERIAL_PORT Serial1
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#define RPI_SERIAL_BAUD_RATE 9600
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//GPS
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#define GPS_SERIAL_PORT Serial3
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#define GPS_SERIAL_BAUD_RATE 9600
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//Sensors
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Adafruit_BME280 bme;
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float seaLevelPressure = SENSORS_PRESSURE_SEALEVELHPA;
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float bme280_press;
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float bme280_temp;
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float bme280_alti;
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float bme280_humi;
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// AS3935 Lightning sensor
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#define AS3935_INDOORS 0
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#define AS3935_OUTDOORS 1
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#define AS3935_DIST_DIS 0
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#define AS3935_DIST_EN 1
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#define AS3935_CAPACITANCE 72 // 72pF for THIS board (from seller)
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enum strike_sources { UNKNOWN_SRC, LIGHTNING, PERTURBATION, NOISE };
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volatile int8_t AS3935_ISR_Trig = 0; // Trigger for AS3935 lightning sensor
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void AS3935_ISR() {
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AS3935_ISR_Trig = 1;
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}
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PWF_AS3935 lightning(AS3935_CS_PIN, AS3935_IRQ_PIN, 33);
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int as3935_src;
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int as3935_distance;
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long lightning_nb_total = 0;
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int lightning_nb_hour = 0;
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int lightning_nb_day = 0;
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int as3935_perturb_total = 0;
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int as3935_noise_total = 0;
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int as3935_unknown_total = 0;
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char lightning_log_file[12] = "lghtnng.log";
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//GPS
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//Adafruit_GPS GPS(&GPS_SERIAL_PORT);
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TinyGPS GPS;
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float gps_latitude, gps_longitude, gps_altitude; // returns +- latitude/longitude in degrees
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float gps_speed, gps_course;
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unsigned long gps_time, gps_date, gps_fix_age;
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int gps_year;
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byte gps_month, gps_day, gps_hour, gps_minutes, gps_second, gps_hundreths;
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unsigned long gps_chars, gps_hdop;
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unsigned short gps_sentences, gps_failed_checksum, gps_satellites;
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//Miscellaneous
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bool rpi_status = true;
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int batt_voltage;
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bool low_battery_flag = false;
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// Tasks timers
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elapsedMillis since_bme280;
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elapsedMillis since_gps;
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elapsedMillis since_display;
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elapsedMillis since_serial_send;
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elapsedMillis since_sd_log;
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elapsedMillis since_batt_chk;
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void BootMessage(String s) {
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char c[13]; // char buffer for conversion String->char
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s.toCharArray(c, sizeof(s));
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SERIAL_PORT.printf("%-12s", c);
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}
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void BootOK() {
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SERIAL_PORT.println("OK");
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}
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void BootError() {
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SERIAL_PORT.println("EE");
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}
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void sendDataOnSerial() {
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//Print date & hour on serial port
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SERIAL_PORT.printf("%04d/%02d/%02d_%02d:%02d:%02d\n", year(), month(), day(), hour(), minute(), second());
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//if (bme280_event.pressure) {
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SERIAL_PORT.printf("Temperature:%8.2f %cC | Pressure: %8.2f hPa | Altitude:%8.2f m\n",
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bme280_temp, DEGREE, bme280_press, bme280_alti);
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// }
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// else {
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// SERIAL_PORT.printf("BMP180 Sensor error\n");
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// }
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SERIAL_PORT.printf("Lightning strikes (from start) : %d | Perturb.: %d | Noise : %d | Unknown detect.: %d\n", lightning_nb_total,
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as3935_perturb_total,
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as3935_noise_total,
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as3935_unknown_total);
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//SERIAL_PORT.printf("Temperature:%8.2f %cC\n", tcn75a_temp, DEGREE);
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SERIAL_PORT.printf("GPS data: %04d/%02d/%02d_%02d:%02d:%02d (%d)\n", gps_year, gps_month, gps_day,
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gps_hour, gps_minutes, gps_second,
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gps_fix_age);
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SERIAL_PORT.printf(" Latitude: %11.8f | Longitude: %11.8f | Altitude: %5.2f m\n", gps_latitude, gps_longitude, gps_altitude);
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SERIAL_PORT.printf(" Speed: %4.1f km/h | Course : %4.1f %c\n", gps_speed, gps_course, DEGREE);
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SERIAL_PORT.printf(" Chars: %11d | Sentences: %11d | Failed cheksum: %4d\n", gps_chars, gps_sentences, gps_failed_checksum);
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SERIAL_PORT.printf("Battery : %10d mV | Low Battery : %d\n", batt_voltage, low_battery_flag);
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}
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bool isStartedPI() {
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//Return true if the R-Pi respond to an simple request
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return rpi_status;
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}
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void startRPI() {
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//Start the Raspberry Pi via the MOSFET (grid connected to the RPI_PWR_PIN)
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if (!isStartedPI()) {
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pinMode(RPI_PWR_PIN, OUTPUT);
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digitalWrite(RPI_PWR_PIN, LOW);
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rpi_status = true;
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}
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}
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void stopRPI() {
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//Stop the Raspberry Pi via the MOSFET (grid connected to the RPI_PWR_PIN)
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pinMode(RPI_PWR_PIN, INPUT); //Eteint via le MOSFET
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rpi_status = false;
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}
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void sendDataToRPI() {
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//if (isStartedPI()) {
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//Print date & hour on serial port
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RPI_SERIAL_PORT.printf("%04d/%02d/%02d_%02d:%02d:%02d\n", year(), month(), day(), hour(), minute(), second());
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//if (bme280_event.pressure) {
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RPI_SERIAL_PORT.printf("Temperature:%8.2f %cC | Pressure: %8.2f hPa | Altitude:%8.2f m\n",
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bme280_temp, DEGREE, bme280_press, bme280_alti);
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//}
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//else {
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// RPI_SERIAL_PORT.printf("BMP180 Sensor error\n");
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//}
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RPI_SERIAL_PORT.printf("Lightning strikes (from start) : %d | Perturb.: %d | Noise : %d | Unknown detect.: %d\n", lightning_nb_total,
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as3935_perturb_total,
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as3935_noise_total,
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as3935_unknown_total);
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RPI_SERIAL_PORT.printf("GPS data: %04d/%02d/%02d_%02d:%02d:%02d (%d)\n", gps_year, gps_month, gps_day,
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gps_hour, gps_minutes, gps_second,
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gps_fix_age);
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RPI_SERIAL_PORT.printf(" Latitude: %11.8f | Longitude: %11.8f | Altitude: %5.2f m\n", gps_latitude, gps_longitude, gps_altitude);
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RPI_SERIAL_PORT.printf(" Speed: %4.1f km/h | Course : %4.1f %c\n", gps_speed, gps_course, DEGREE);
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RPI_SERIAL_PORT.printf(" Chars: %11d | Sentences: %11d | Failed cheksum: %4d\n", gps_chars, gps_sentences, gps_failed_checksum);
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RPI_SERIAL_PORT.printf("Battery : %10d mV | Low Battery : %d\n", batt_voltage, low_battery_flag);
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// }
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// else {
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// //error RPI is not started
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// }
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}
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//SD Card
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#define CONFIGFILE "config.txt"
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//Configuration
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char data_file[13] = "datalog.csv";
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//Delays
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unsigned int bme280_delay = 500;
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//unsigned int dht_delay = 3000;
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unsigned int gps_delay = 100;
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unsigned int serial_send_delay = 5000;
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unsigned int sd_log_delay = 5000;
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unsigned int batt_chk_delay = 5000;
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//Date and time
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int TZ = 1; //Time zone
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/*
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* SETUP
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*/
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void setup() {
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//To be sure Raspberry-Pi won't be turned on unexpectedly
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stopRPI();
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pinMode(LOW_BATT_PIN, INPUT_PULLUP);
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low_battery_flag = !digitalRead(LOW_BATT_PIN);
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pinMode(GPS_BUT_PIN, INPUT_PULLUP);
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pinMode(GPS_EN_PIN, OUTPUT);
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gps_power();
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SERIAL_PORT.begin(SERIAL_BAUD_RATE);
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delay(1000);
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//while (!SERIAL_PORT) { }; //Wait for serial port to start
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SERIAL_PORT.printf("Serial Comm. OK\nNow booting...\n");
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RPI_SERIAL_PORT.begin(RPI_SERIAL_BAUD_RATE);
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delay(1000);
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//while (!RPI_SERIAL_PORT) { }; //Wait for serial port to start
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RPI_SERIAL_PORT.printf("Raspberry's Serial Comm. OK\nNow booting...\n");
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BootMessage("SDcard");
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// see if the card is present and can be initialized:
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if (!SD.begin(SD_CS_PIN)) {
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BootError();
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while(1);
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}
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BootOK();
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BootMessage("RT Clock");
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// set the Time library to use Teensy 3.0's RTC to keep time
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setSyncProvider(getTeensy3Time);
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if (timeStatus()!= timeSet) {
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BootError();
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while(1);
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}
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BootOK();
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BootMessage("BME280 (Pressure, Humidity and Temperature)");
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/* Initialise the sensor */
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// if(!bme.begin())
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// {
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// /* There was a problem detecting the BMP085 ... check your connections */
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// BootError();
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// while(1);
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// }
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BootOK();
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BootMessage("AS3935 (Lightning)");
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SPI.begin();
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SPI.setClockDivider(SPI_CLOCK_DIV16); // SPI speed to SPI_CLOCK_DIV16/1MHz (max 2MHz, NEVER 500kHz!)
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SPI.setDataMode(SPI_MODE1); // MAX31855 is a Mode 1 device --> clock starts low, read on rising edge
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SPI.setBitOrder(MSBFIRST); // data sent to chip MSb first
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lightning.AS3935_DefInit(); // set registers to default
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// now update sensor cal for your application and power up chip
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lightning.AS3935_ManualCal(AS3935_CAPACITANCE, AS3935_OUTDOORS, AS3935_DIST_EN);
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// enable interrupt (hook IRQ pin to Arduino Uno/Mega interrupt input: 0 -> pin 2, 1 -> pin 3 )
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attachInterrupt(AS3935_IRQ_PIN, AS3935_ISR, RISING);
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BootOK();
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BootMessage("GPS");
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GPS_SERIAL_PORT.begin(GPS_SERIAL_BAUD_RATE);
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while (!GPS_SERIAL_PORT) {} ;
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BootOK();
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}
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/*
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* LOOP
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*/
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void loop() {
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//Power ON/OFF GPS
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gps_power();
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//Lightning detection
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if (AS3935_ISR_Trig != 0) {
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AS3935_ISR_Trig = 0;
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time_t t = now();
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int distance = -9999;
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int energy = -9999;
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switch (as3935_src) {
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case UNKNOWN_SRC:
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//source inconnue
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as3935_unknown_total++;
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SERIAL_PORT.printf("Interruption (AS3935) : unkown source (not lightning)\n");
|
||
|
|
break;
|
||
|
|
case LIGHTNING:
|
||
|
|
//Foudre !!!
|
||
|
|
lightning_nb_total++;
|
||
|
|
distance = lightning.AS3935_GetLightningDistKm();
|
||
|
|
energy = lightning.AS3935_GetStrikeEnergyRaw();
|
||
|
|
SERIAL_PORT.printf("Interruption (AS3935) : Lightningbolt !!!\n");
|
||
|
|
SERIAL_PORT.printf("Distance : %4d km | Energy : %d \n", distance, energy);
|
||
|
|
break;
|
||
|
|
case PERTURBATION:
|
||
|
|
//Perturbation
|
||
|
|
as3935_perturb_total++;
|
||
|
|
SERIAL_PORT.printf("Interruption (AS3935) : perturbation...\n");
|
||
|
|
break;
|
||
|
|
case NOISE:
|
||
|
|
//Trop de bruit électromagnétique
|
||
|
|
as3935_noise_total++;
|
||
|
|
SERIAL_PORT.printf("Interruption (AS3935) : Too much electromagnetic noise!\n");
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
writeLightningToSD(as3935_src, t, distance, energy);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (since_batt_chk >= batt_chk_delay) {
|
||
|
|
since_batt_chk -= batt_chk_delay;
|
||
|
|
//Check battery status and voltage
|
||
|
|
low_battery_flag = !digitalRead(LOW_BATT_PIN);
|
||
|
|
batt_voltage = getBatteryVoltage();
|
||
|
|
}
|
||
|
|
|
||
|
|
// if (since_bme280 >= bme280_delay) {
|
||
|
|
// since_bme280 = since_bme280 - bme280_delay;
|
||
|
|
//
|
||
|
|
// bme280_press = bme.readPressure() / 100.0F;
|
||
|
|
// bme280_alti = bme.readAltitude(seaLevelPressure);
|
||
|
|
// bme280_temp = bme.readTemperature();
|
||
|
|
// bme280_humi = bme.readHumidity();
|
||
|
|
// }
|
||
|
|
|
||
|
|
if (since_gps >= gps_delay) {
|
||
|
|
since_gps = since_gps - gps_delay;
|
||
|
|
while (GPS_SERIAL_PORT.available()) {
|
||
|
|
char c = GPS_SERIAL_PORT.read();
|
||
|
|
if (GPS.encode(c)) {
|
||
|
|
GPS.get_datetime(&gps_date, &gps_time, &gps_fix_age);
|
||
|
|
GPS.crack_datetime(&gps_year, &gps_month, &gps_day,
|
||
|
|
&gps_hour, &gps_minutes, &gps_second,
|
||
|
|
&gps_hundreths, &gps_fix_age);
|
||
|
|
GPS.f_get_position(&gps_latitude, &gps_longitude, &gps_fix_age);
|
||
|
|
gps_altitude = GPS.f_altitude();
|
||
|
|
gps_speed = GPS.f_speed_kmph();
|
||
|
|
GPS.stats(&gps_chars, &gps_sentences, &gps_failed_checksum);
|
||
|
|
gps_satellites = GPS.satellites();
|
||
|
|
gps_hdop = GPS.hdop();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (since_sd_log >= sd_log_delay) {
|
||
|
|
since_sd_log = since_sd_log - sd_log_delay;
|
||
|
|
writeDataToSD();
|
||
|
|
}
|
||
|
|
|
||
|
|
if (since_serial_send >= serial_send_delay) {
|
||
|
|
since_serial_send = since_serial_send - serial_send_delay;
|
||
|
|
sendDataOnSerial();
|
||
|
|
sendDataToRPI();
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* FUNCTIONS
|
||
|
|
*/
|
||
|
|
|
||
|
|
time_t getTeensy3Time() {
|
||
|
|
return Teensy3Clock.get();
|
||
|
|
}
|
||
|
|
|
||
|
|
void gps_power() {
|
||
|
|
if (digitalRead(GPS_BUT_PIN) == 0) { digitalWrite(GPS_EN_PIN, LOW); }
|
||
|
|
else { digitalWrite(GPS_EN_PIN, HIGH); }
|
||
|
|
}
|
||
|
|
|
||
|
|
int getBatteryVoltage() {
|
||
|
|
long mean = 0;
|
||
|
|
int U = 0;
|
||
|
|
int n = 10;
|
||
|
|
int res = 12;
|
||
|
|
|
||
|
|
analogReadResolution(res);
|
||
|
|
|
||
|
|
for (int i=0; i<n; i++) {
|
||
|
|
mean += analogRead(BATT_VOLT_PIN);
|
||
|
|
//delay(2);
|
||
|
|
}
|
||
|
|
mean /= n;
|
||
|
|
|
||
|
|
U = map(mean, 0, pow(2, res)-1, 0, 3300); // Convert data from ADC into input voltage in mV
|
||
|
|
U *= 2; //Multiple by 2 for the voltage divider
|
||
|
|
|
||
|
|
return U;
|
||
|
|
}
|
||
|
|
|
||
|
|
void writeDataToSD() {
|
||
|
|
|
||
|
|
char dir[20];
|
||
|
|
char path[60];
|
||
|
|
|
||
|
|
String directory = dayDirectory();
|
||
|
|
|
||
|
|
directory.toCharArray(dir, sizeof(directory));
|
||
|
|
sprintf(path, "%s/%s", dir, data_file);
|
||
|
|
|
||
|
|
// Test to know if the file exists before opening it, if it doesn't exist
|
||
|
|
// we will write first an header
|
||
|
|
bool no_header = SD.exists(path);
|
||
|
|
|
||
|
|
// open the file. note that only one file can be open at a time,
|
||
|
|
// so you have to close this one before opening another.
|
||
|
|
File dataFile = SD.open(path, FILE_WRITE);
|
||
|
|
|
||
|
|
// if the file is available, write to it:
|
||
|
|
if (dataFile) {
|
||
|
|
if (!no_header) {
|
||
|
|
SERIAL_PORT.printf("Creating file with CSV header : %s\n", path);
|
||
|
|
dataFile.printf("Date");
|
||
|
|
dataFile.printf(";BME280_Pressure(hPa);BME280_Temperature(degC);BME280_Humidity(%);BME280_Altitude(m)");
|
||
|
|
dataFile.printf(";TotalLightningCount;TotalPerturbationEvents;TotalNoiseDetection;TotalUnknownDetection");
|
||
|
|
dataFile.printf(";GPS_Latitude;GPS_Longitude;GPS_Altitude;GPS_Satellites;GPS_HDOP;GPS_Date");
|
||
|
|
dataFile.printf(";Battery_voltage(mV);Low_Battery_Status");
|
||
|
|
dataFile.printf("\n");
|
||
|
|
}
|
||
|
|
dataFile.printf("%04d/%02d/%02d_%02d:%02d:%02d", year(), month(), day(), hour(), minute(), second());
|
||
|
|
dataFile.printf(";%.2f;%.2f;%.0f;%.1f", bme280_press, bme280_temp, bme280_humi, bme280_alti);
|
||
|
|
dataFile.printf(";%d;%d;%d;%d", lightning_nb_total, as3935_perturb_total, as3935_noise_total, as3935_unknown_total);
|
||
|
|
dataFile.printf(";%.8f;%.8f;%.2f;%d;%d;%04d/%02d/%02d_%02d:%02d:%02d", gps_latitude, gps_longitude, gps_altitude,
|
||
|
|
gps_satellites, gps_hdop,
|
||
|
|
gps_year, gps_month, gps_day,
|
||
|
|
gps_hour, gps_minutes, gps_second);
|
||
|
|
dataFile.printf(";%d;%d", batt_voltage, low_battery_flag);
|
||
|
|
dataFile.printf("\n");
|
||
|
|
|
||
|
|
dataFile.close();
|
||
|
|
}
|
||
|
|
SERIAL_PORT.printf("Data writen : %s\n", path);
|
||
|
|
}
|
||
|
|
|
||
|
|
void writeLightningToSD(int type, time_t t, int dist, int energy) {
|
||
|
|
|
||
|
|
char dir[20];
|
||
|
|
char path[60];
|
||
|
|
|
||
|
|
String directory = dayDirectory();
|
||
|
|
|
||
|
|
directory.toCharArray(dir, sizeof(directory));
|
||
|
|
sprintf(path, "%s/%s", dir, lightning_log_file);
|
||
|
|
|
||
|
|
// Test to know if the file exists before opening it, if it doesn't exist
|
||
|
|
// we will write first an header
|
||
|
|
bool no_header = SD.exists(path);
|
||
|
|
|
||
|
|
// open the file. note that only one file can be open at a time,
|
||
|
|
// so you have to close this one before opening another.
|
||
|
|
File dataFile = SD.open(path, FILE_WRITE);
|
||
|
|
|
||
|
|
// if the file is available, write to it:
|
||
|
|
if (dataFile) {
|
||
|
|
if (!no_header) {
|
||
|
|
SERIAL_PORT.printf("Creating file with CSV header : %s\n", path);
|
||
|
|
dataFile.printf("Date");
|
||
|
|
dataFile.printf(";distance(km);energie_raw");
|
||
|
|
dataFile.printf(";TotalLightningCount;TotalPerturbationEvents;TotalNoiseDetection;TotalUnknownDetection");
|
||
|
|
dataFile.printf(";BME280_Pressure(hPa);BME280_Temperature(degC);BME280_Humidty(%);BME280_Altitude(m)");
|
||
|
|
dataFile.printf("\n");
|
||
|
|
}
|
||
|
|
dataFile.printf("%04d/%02d/%02d_%02d:%02d:%02d", year(t), month(t), day(t), hour(t), minute(t), second(t));
|
||
|
|
dataFile.printf(";%d;%d;%d", type, dist, energy);
|
||
|
|
dataFile.printf(";%d;%d;%d;%d", lightning_nb_total, as3935_perturb_total, as3935_noise_total, as3935_unknown_total);
|
||
|
|
dataFile.printf(";%.2f;%.2f;%.0f;%.1f", bme280_press, bme280_temp, bme280_humi, bme280_alti);
|
||
|
|
dataFile.printf("\n");
|
||
|
|
|
||
|
|
dataFile.close();
|
||
|
|
}
|
||
|
|
SERIAL_PORT.printf("Data writen : %s\n", path);
|
||
|
|
}
|
||
|
|
|
||
|
|
String dayDirectory() {
|
||
|
|
|
||
|
|
char dir[20] ;
|
||
|
|
|
||
|
|
sprintf(dir, "data/%04d/%02d/%02d/", year(), month(), day());
|
||
|
|
|
||
|
|
if (!SD.exists(dir))
|
||
|
|
{
|
||
|
|
SERIAL_PORT.printf("Creating directory : %s ...", dir);
|
||
|
|
SD.mkdir(dir);
|
||
|
|
SERIAL_PORT.printf(" DONE!\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
return String(dir);
|
||
|
|
}
|
||
|
|
|