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# file DFRobot_AS3935_detailed.py
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#
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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 = High A1 = Low
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# AS3935_ADD3 0x03 A0 = High A1 = High
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# AS3935_ADD2 0x02 A0 = Low A1 = High
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#
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#
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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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#
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# version V0.1
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# date 2018-11-13
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import sys
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sys.path.append('../')
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import time
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from DFRobot_AS3935_Lib import DFRobot_AS3935
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import RPi.GPIO as GPIO
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from datetime import datetime
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#I2C address
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AS3935_I2C_ADDR1 = 0X01
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AS3935_I2C_ADDR2 = 0X02
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AS3935_I2C_ADDR3 = 0X03
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#Antenna tuning capcitance (must be integer multiple of 8, 8 - 120 pf)
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AS3935_CAPACITANCE = 96
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IRQ_PIN = 37
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#Indoor/outdoor mode selection
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AS3935_INDOORS = 0
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AS3935_OUTDOORS = 1
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AS3935_MODE = AS3935_INDOORS
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#Enable/disable disturber detection
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AS3935_DIST_DIS = 0
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AS3935_DIST_EN = 1
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AS3935_DIST = AS3935_DIST_EN
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GPIO.setmode(GPIO.BOARD)
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sensor = DFRobot_AS3935(AS3935_I2C_ADDR3, bus = 1)
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sensor.reset()
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#Configure sensor
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sensor.manualCal(AS3935_CAPACITANCE, AS3935_MODE, AS3935_DIST)
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#set indoors or outdoors models
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sensor.setIndoors()
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#sensor.setOutdoors()
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#disturber detection
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sensor.disturberEn()
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#sensor.disturberDis()
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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 plus 3.5% to 500/16 kHz minus 3.5%
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#
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# sensor.setLcoFdiv(0)
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# sensor.setIrqOutputSource(3)
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#Set the noise level,use a default value greater than 7
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sensor.setNoiseFloorLv1(2)
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#noiseLv = sensor.getNoiseFloorLv1()
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#used to modify WDTH,alues should only be between 0x00 and 0x0F (0 and 7)
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sensor.setWatchdogThreshold(0)
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#wtdgThreshold = sensor.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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sensor.setSpikeRejection(2)
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#spikeRejection = sensor.getSpikeRejection()
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def callback_handle(channel):
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global sensor
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time.sleep(0.005)
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intSrc = sensor.getInterruptSrc()
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if intSrc == 1:
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lightningDistKm = sensor.getLightningDistKm()
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print('Lightning occurs!')
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print('Distance: %dkm'%lightningDistKm)
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lightningEnergyVal = sensor.getStrikeEnergyRaw()
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print('Intensity: %d '%lightningEnergyVal)
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elif intSrc == 2:
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print('Disturber discovered!')
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elif intSrc == 3:
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print('Noise level too high!')
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else:
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pass
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#Set to input mode
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GPIO.setup(IRQ_PIN, GPIO.IN)
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#Set the interrupt pin, the interrupt function, rising along the trigger
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GPIO.add_event_detect(IRQ_PIN, GPIO.RISING, callback = callback_handle)
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print("start lightning detect.")
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while True:
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time.sleep(1.0)
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