Python • Connecting the radiation sensor "RadiationD-v1.1(Cajoe)" to raspberry pi 4 using the library via RPi.GPIO.

When using the following code to read pulses from this sensor

import time
import datetime
import RPi.GPIO as GPIO
from collections import deque

counts = deque()
usvh_ratio = 0.00812037037037 # This is for the J305 tube

geigerChannel = 7

# https://sourceforge.net/p/raspberry-gpi ... asicUsage/
GPIO.setmode(GPIO.BOARD)
GPIO.setwarnings(True)


# This method fires on edge detection (the pulse from the counter board)
def countme(channel):
global counts
timestamp = datetime.datetime.now()
counts.append(timestamp)


# Set the input with falling edge detection for geiger counter pulses
GPIO.setup(geigerChannel, GPIO.IN)

# https://sourceforge.net/p/raspberry-gpi ... ki/Inputs/
GPIO.add_event_detect(geigerChannel, GPIO.FALLING, callback=countme)

loop_count = 0

# In order to calculate CPM we need to store a rolling count of events in the last 60 seconds
# This loop runs every second to update measurements and removes elements from the queue
# that are older than 60 seconds
while True:
loop_count = loop_count + 1

try:
while counts[0] < datetime.datetime.now() - datetime.timedelta(seconds=60):
counts.popleft()
except IndexError:
pass # there are no records in the queue.

if loop_count == 10:
# Every 10th iteration (10 seconds), store a measurement in Influx
measurements = [
{
'measurement': 'sensor',
'fields': {
'cpm': int(len(counts)),
'usvh': "{:.2f}".format(len(counts) * usvh_ratio)
}
}
]
print(measurements)
loop_count = 0

time.sleep(1)
the following error occurs
GPIO.add_event_detect(2, GPIO.FALLING, callback=impulse) # определение внешнего прерывания
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
RuntimeError: Failed to add edge detection
how can it be solved if I have already tried to use other functions of this library, nothing helps. Although before reinstalling the OS this code worked more than correctly, but after updating the OS no.

Statistics: Posted by zatomaks — Fri Sep 06, 2024 10:35 am

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