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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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|
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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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|
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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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|
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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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|
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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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|
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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 ± 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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|
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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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while True: |
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time.sleep(1.0) |
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