# import tty
# import select
import time
import os
import math
from I2C_mutex import Mutex
import easysensors
try:
from di_sensors import easy_distance_sensor
except ImportError as e:
# It is quite possible to use the GPG3 without having the di_sensors repo installed
pass
except Exception as e:
print("Importing di_sensors error: {}".format(e))
mutex = Mutex(debug=False)
hardware_connected = True
try:
import gopigo3
except ImportError:
hardware_connected = False
print("Cannot import gopigo3 library")
except Exception as e:
hardware_connected = False
print("Unknown issue while importing gopigo3")
print(e)
# try:
# from line_follower import line_sensor
# from line_follower import scratch_line
import sys
# import tty
# import select
import time
try:
import gopigo
except:
pass
# import os
# the following libraries may or may not be installed
# nor needed
from I2C_mutex import Mutex
mutex = Mutex()
def _ifMutexAcquire(mutex_enabled = False):
"""
Acquires the I2C if the ``use_mutex`` parameter of the constructor was set to ``True``.
"""
if mutex_enabled:
mutex.acquire()
def _ifMutexRelease(mutex_enabled = False):
"""
Releases the I2C if the ``use_mutex`` parameter of the constructor was set to ``True``.
"""
if mutex_enabled:
mutex.release()
####################################################
# This file tests the mutex class
# Run it in parallel with text_heavy_mutext_2.py
# in order to verify that mutex is functional.
# This one acquires and releases every 5 seconds
# the other one is every half second
####################################################
import time
from I2C_mutex import Mutex
import fcntl
mutex = Mutex(debug=True)
DexterLockI2C_handle = open('/run/lock/DexterLockI2C')
while True:
try:
mutex.acquire()
time.sleep(5)
mutex.release()
except KeyboardInterrupt:
mutex.release()
exit()
except Exception as e:
print(e)