:as3935 Interrupt loop

coloradokb
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Posts: 12

:as3935 Interrupt loop May 31, 2017 6:27:31 GMT -8

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Post by coloradokb on May 31, 2017 6:27:31 GMT -8

I've come across something odd...and it's 100% consistent. Upon starting up the GroveWeather.py file sometimes all works fine, but now what I see most of the time is the lightning detector (mod-1016G) producing, over and over, "as3935 Interrupt." Eg:

python GroveWeatherPi.py
Error accessing 0x48: Check your I2C address
Error accessing 0x48: Check your I2C address
Type Error
WXLink Reset
as3935 Interrupt
as3935 Interrupt
as3935 Interrupt....indefinitely.

However, sometimes it works correctly -- although, not sure if the 0x48 Err is ok, but it has worked:
Error accessing 0x48: Check your I2C address
Error accessing 0x48: Check your I2C address
Type Error
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: 03 -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- 73 -- -- -- --

as3935 Interrupt
GroveWeatherPi Solar Powered Weather Station Version 2.3 - SwitchDoc Labs

Program Started at:2017-05-31 07:40:33

as3935 Interrupt
----------------------
I2C Mux - TCA9545: Present
BMP280: Present
DS3231: Present
HTU21DF: Not Present
AM2315: Present
ADS1015: Not Present
ADS1115: Not Present
AS3935: Present
OLED: Not Present
SunAirPlus: Not Present
WXLink: Not Present

UseMySQL: Present
Check WLAN: Present
WeatherUnderground: Present

I've attached (mux_output.txt) the output of the Mux board test. I've tried every permutation I can think of on the connections, rebooted, powered-off and let sit for hours, etc., thinking the lightning detector needs to reset, but I'm quite confused.

My guess is it lies in how I have the sensors wired onto the Mux board. Any ideas or thoughts?

Attachments:

mux_output.txt (2.71 KB)

SDL Global Moderator Posts: 5,655 Raspberry Pi: Yes Other Device: PC, arduino, beagleBone	:as3935 Interrupt loop May 31, 2017 12:53:38 GMT -8 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by SDL on May 31, 2017 12:53:38 GMT -8 Hmmm. I have seen this one before. Somewhere. Try running it through the sample code with just the Lightning Detector connected. Also, check to make SURE you have the cables plugged in correctly. Maybe they are swapped. BP

coloradokb
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Posts: 12

:as3935 Interrupt loop Jun 1, 2017 5:42:04 GMT -8

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Post by coloradokb on Jun 1, 2017 5:42:04 GMT -8

Thanks BP...I think I'm closer. On the as3935-interrupt print statement, I did find it at Line 467 in GroveWeatherPi.py. Commented it out for my sanity. I updated my code (git-clone) to make sure I hadn't goofed something up and verified BUS1 was indeed the setting (as3935 = RPi_AS3935(address=0x03, bus=1 at line 350). It appears more reliable now, however, I did get some interrupt issues again last night.

One thing to note is I've been running the tests outside now and we have had thunderstorm activity in the vacinity when powering up the pi/sensor. Is it possible that the power-up with electrical activity in the area is part of issue?

I'll keep plugging away! I've only seen a printout of lightning detection at 1KM a few times. Is there any hints on sensitivity settings on the AS3935? I'll post in the appropriate forum after I do more work/research. Thanks again!

SDL
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Posts: 5,655
Raspberry Pi: Yes
Other Device: PC, arduino, beagleBone

:as3935 Interrupt loop Jun 1, 2017 5:59:53 GMT -8

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Post by SDL on Jun 1, 2017 5:59:53 GMT -8

The AS3935 is a complex chip with lots of options. Take a look at the drivers and you will start to see all the options available.

Something is causing interrupts in your system. Did you check the wiring on the tInterrupt pin? You shouldn't be getting so many interrupts. I wonder if it is noise issues. How far away from the processor is your AS3935? The farther the better.

That is why you see the Lightning detector mounted on a pylon in both GroveWeatherPi and also Project Curacao2.

I hear from the folks in Curacao that there is lots of lightning and they can't wait to get the detector going. They have some physical damage to fix to the box (some broken pylons for the solar panels and some loose boards. then it is install the batteries and see what can be done.

BP

coloradokb
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Posts: 12

:as3935 Interrupt loop Jun 1, 2017 7:01:07 GMT -8

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Post by coloradokb on Jun 1, 2017 7:01:07 GMT -8

Thanks BP. Distance from rest of hardware, at the moment, is not far - length of the wiring

- about 20 cm. My local library has the Pylon printed and ready for pickup! Is 20 cm long enough? As for the "Interrupt pin." this is where my ignorance of electrical/wiring shows brightest - are you talking about one of the wires hooked up on the Grove connector?

KB

SDL
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Posts: 5,655
Raspberry Pi: Yes
Other Device: PC, arduino, beagleBone

:as3935 Interrupt loop Jun 1, 2017 8:56:27 GMT -8

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Post by SDL on Jun 1, 2017 8:56:27 GMT -8

If you bought our kit, you should have two 50cm cables. use those. If not, buy a 5 pack on the store.switchdoc.com 20cm is NOT far enough! This could be your source of additional interrupts! Usually, it manifests itself as just noise interrupts, but that is only anecdotal.

Look at the the Lightning Detector. One grove connector is labeled I2C and the other is labeled Interrupt. Make sure they are plugged into the correct one.

BP

coloradokb
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Posts: 12

:as3935 Interrupt loop Jun 9, 2017 14:29:01 GMT -8

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Post by coloradokb on Jun 9, 2017 14:29:01 GMT -8

Hi BP, been awhile! All working well...except, I don't think my lightning detector is working well. It's not reporting any nearby strikes. Pretty sure I have the wiring messed up. I have (on Bus1) the Grove I2C connected to the MUX and the other connection Grove Digital IRQ connection to the Pi2Grover board on D13/D16. I have the detector about 1.5 feet away (and pi3/other detectors housed in separate box) so I don't believe I have a proximity issue. Thanks!

SDL
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Posts: 5,655
Raspberry Pi: Yes
Other Device: PC, arduino, beagleBone

:as3935 Interrupt loop Jun 10, 2017 4:47:15 GMT -8

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Post by SDL on Jun 10, 2017 4:47:15 GMT -8

Well, shoot. You know the detector is being seen on the bus? That means the I2C cable is correct.

1.5ft should be more than sufficient for distance from the Pi.

Regarding your non-detection of lightning. We have a lightning tester that simulates strikes. It is over $200 so not really a good product. We are looking for a replacement and have a much cheaper on on the way to examine.

You can move the lightning detector next to a source of electrical noise like a monitor and see if at least you get distruptor interrupts. Try a smart phone too.

More about this next week.

BP

Post by coloradokb on May 31, 2017 6:27:31 GMT -8

Post by SDL on May 31, 2017 12:53:38 GMT -8

Post by coloradokb on Jun 1, 2017 5:42:04 GMT -8

Post by SDL on Jun 1, 2017 5:59:53 GMT -8

Post by coloradokb on Jun 1, 2017 7:01:07 GMT -8

Post by SDL on Jun 1, 2017 8:56:27 GMT -8

Post by coloradokb on Jun 9, 2017 14:29:01 GMT -8

Post by SDL on Jun 10, 2017 4:47:15 GMT -8

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