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140 lines
3.7 KiB
140 lines
3.7 KiB
/*!
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file DFRobot_AS3935_lightning_sensor.ino
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SEN0290 Lightning Sensor
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This sensor can detect lightning and display the distance and intensity of the lightning within 40 km
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It can be set as indoor or outdoor mode.
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The module has three I2C, these addresses are:
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AS3935_ADD1 0x01 A0 = 1 A1 = 0
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AS3935_ADD2 0x02 A0 = 0 A1 = 1
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AS3935_ADD3 0x03 A0 = 1 A1 = 1
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Copyright [DFRobot](http://www.dfrobot.com), 2018
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Copyright GNU Lesser General Public License
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version V0.5
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date 2018-11-28
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*/
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#include "Lib_I2C.h"
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#include "DFRobot_AS3935_I2C.h"
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volatile int8_t AS3935IsrTrig = 0;
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#define IRQ_PIN 2
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// Antenna tuning capcitance (must be integer multiple of 8, 8 - 120 pf)
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#define AS3935_CAPACITANCE 96
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// I2C address
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#define AS3935_I2C_ADDR AS3935_ADD3
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void AS3935_ISR();
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DFRobot_AS3935_I2C lightning0((uint8_t)IRQ_PIN);
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void setup()
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{
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Serial.begin(115200);
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Serial.println("DFRobot AS3935 lightning sensor begin!");
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// Setup for the the I2C library: (enable pullups, set speed to 400kHz)
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I2c.begin();
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I2c.pullup(true);
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I2c.setSpeed(1);
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delay(2);
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lightning0.setI2CAddress(AS3935_ADD3);
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// Set registers to default
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if(lightning0.defInit() != 0){
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Serial.println("I2C init fail");
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while(1){}
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}
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// Configure sensor
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lightning0.powerUp();
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//set indoors or outdoors models
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lightning0.setIndoors();
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//lightning0.setOutdoors();
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//disturber detection
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lightning0.disturberEn();
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//lightning0.disturberDis();
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lightning0.setIRQOutputSource(0);
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delay(500);
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//set capacitance
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lightning0.setTuningCaps(AS3935_CAPACITANCE);
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Serial.println("AS3935 manual cal complete");
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// Enable interrupt (connect IRQ pin IRQ_PIN: 2, default)
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// Connect the IRQ and GND pin to the oscilloscope.
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// uncomment the following sentences to fine tune the antenna for better performance.
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// This will dispaly the antenna's resonance frequency/16 on IRQ pin (The resonance frequency will be divided by 16 on this pin)
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// Tuning AS3935_CAPACITANCE to make the frequency within 500/16 kHz ± 3.5%
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// lightning0.setLcoFdiv(0);
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// lightning0.setIRQOutputSource(3);
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// Set the noise level,more than 7 will use the default value:2
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lightning0.setNoiseFloorLvl(2);
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//uint8_t noiseLv = lightning0.getNoiseFloorLvl();
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//used to modify WDTH,alues should only be between 0x00 and 0x0F (0 and 7)
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lightning0.setWatchdogThreshold(1);
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//uint8_t wtdgThreshold = lightning0.getWatchdogThreshold();
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//used to modify SREJ (spike rejection),values should only be between 0x00 and 0x0F (0 and 7)
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lightning0.setSpikeRejection(2);
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//uint8_t spikeRejection = lightning0.getSpikeRejection();
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attachInterrupt(0, AS3935_ISR, RISING);
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}
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void loop()
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{
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// It does nothing until an interrupt is detected on the IRQ pin.
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while (AS3935IsrTrig == 0) {}
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delay(5);
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// Reset interrupt flag
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AS3935IsrTrig = 0;
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// Get interrupt source
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uint8_t intSrc = lightning0.getInterruptSrc();
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if (intSrc == 1)
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{
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// Get rid of non-distance data
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uint8_t lightningDistKm = lightning0.getLightningDistKm();
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Serial.println("Lightning occurs!");
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Serial.print("Distance: ");
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Serial.print(lightningDistKm);
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Serial.println(" km");
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// Get lightning energy intensity
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uint32_t lightningEnergyVal = lightning0.getStrikeEnergyRaw();
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Serial.print("Intensity: ");
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Serial.print(lightningEnergyVal);
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Serial.println("");
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}
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else if (intSrc == 2)
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{
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Serial.println("Disturber discovered!");
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}
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else if (intSrc == 3)
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{
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Serial.println("Noise level too high!");
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}
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//View register data
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//lightning0.printAllRegs();
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}
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//IRQ handler for AS3935 interrupts
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void AS3935_ISR()
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{
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AS3935IsrTrig = 1;
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}
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