Qwiic_PIR_Py

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SparkFun Qwiic Button

Python module for the SparkFun Qwiic PIR - 1 uA (EKMB1107112) and SparkFun Qwiic PIR - 170 uA (EKMC4607112K).

This python package is a port of the existing SparkFun Qwiic PIR Arduino Library

This package can be used in conjunction with the overall SparkFun qwiic Python Package

New to qwiic? Take a look at the entire SparkFun qwiic ecosystem.

Supported Platforms

The Qwiic Button Python package current supports the following platforms:

Dependencies

This driver package depends on the qwiic I2C driver: Qwiic_I2C_Py

Documentation

The SparkFun Qwiic PIR module documentation is hosted at ReadTheDocs

Installation

PyPi Installation

This repository is hosted on PyPi as the sparkfun-qwiic-pir package. On systems that support PyPi installation via pip, this library is installed using the following commands

For all users (note: the user must have sudo privileges):

sudo pip install sparkfun-qwiic-pir

For the current user:

pip install sparkfun-qwiic-pir

To install, make sure the setuptools package is installed on the system.

Direct installation at the command line:

python setup.py install

To build a package for use with pip:

python setup.py sdist

A package file is built and placed in a subdirectory called dist. This package file can be installed using pip.

cd dist
pip install sparkfun-qwiic-pir-<version>.tar.gz

Example Use

See the examples directory for more detailed use examples.

from __future__ import print_function
import qwiic_pir
import time
import sys

debounce_time = .20

def run_example():

    print("\nSparkFun Qwiic PIR  Example 1\n")
    my_PIR = qwiic_pir.QwiicPIR()

    if my_PIR.begin() == False:
        print("The Qwiic PIR isn't connected to the system. Please check your connection", \
            file=sys.stderr)
        return

    print ("Waiting 30 seconds for PIR to stabilize")
    for i in range(0, 30):
        print(i)
        time.sleep(1)

    print("Device Stable")

    while True:
        if my_PIR.raw_reading() is True:
            print("Object Detected")
        else:
            print("Object Removed")
        time.sleep(debounce_time)


if __name__ == '__main__':
    try:
        run_example()
    except (KeyboardInterrupt, SystemExit) as exErr:
        print("\nEnding Example 1")
        sys.exit(0)

SparkFun - Start Something

Table of Contents

API Reference

qwiic_pir

Python module for the Qwiic PIR. This python package is a port of the exisiting [SparkFun Qwiic PIR Arduino Library](https://github.com/sparkfun/SparkFun_Qwiic_PIR_Arduino_Library) This package can be used in conjunction with the overall [SparkFun Qwiic Python Package](https://github.com/sparkfun/Qwiic_Py) New to qwiic? Take a look at the entire [SparkFun Qwiic Ecosystem](https://www.sparkfun.com/qwiic).

class qwiic_pir.QwiicPIR(address=None, i2c_driver=None)[source]
Parameters

  • address – The I2C address to use for the device. If not provided, the default address is used.

  • i2c_driver – An existing i2c driver object. If not provided a driver object is created.

Returns

The GPIO device object.

Return type

Object

available()[source]

Return the event_available bit of the EVENT_STATUS register

Returns

event_available bit

Rtye

bool

begin()[source]

Initialize the operation of the Qwiic PIR Run is_connected() and check the ID in the ID register

Returns

Returns true if the intialization was successful, otherwise False.

Return type

bool

clear_event_bits()[source]

Clear the object_remove, object_detect, and event_available bits of the EVENT_STATUS register

Returns

Nothing

Return type

Void

disable_interrupt()[source]

Clear the interrupt_enable bit of the INTERRUPT_CONFIG register

Returns

Nothing

Return type

Void

enable_interrupt()[source]

Set interrupt_enable bit of the INTERRUPT_CONFIG register to a 1

Returns

Nothing

Return type

Void

get_I2C_address()[source]

Returns the current I2C address of the Qwiic PIR

Returns

current I2C address

Return type

int

get_debounce_time()[source]

Returns the value in the EVENT_DEBOUNCE_TIME register

Returns

debounce time in milliseconds

Return type

int

get_firmware_version()[source]

Read the register and get the major and minor firmware version number.

Returns

16 bytes version number

Return type

int

is_connected()[source]

Determine if a Qwiic PIR device is connected to the system.

Returns

True if the device is connected, otherwise False.

Return type

bool

is_detected_queue_empty()[source]

Returns the is_empty bit of the DETECTED_QUEUE_STATUS register

Returns

detected_is_empty

Return type

bool

is_detected_queue_full()[source]

Returns the is_full bit of the DETECTED_QUEUE_STATUS register

Returns

detected_is_full

Return type

bool

is_removed_queue_empty()[source]

Returns the is_empty bit of the REMOVED_QUEUE_STATUS register

Returns

removed_is_empty

Return type

bool

is_removed_queue_full()[source]

Returns the is_full bit of the REMOVED_QUEUE_STATUS register

Returns

removed_is_full

Return type

bool

object_detected()[source]

Returns the value of the object_detect status bit of the EVENT_STATUS register

Returns

object_detect bit

Return type

bool

object_removed()[source]

Returns the value of the object_remove status bit of the EVENT_STATUS register

Returns

object_remove bit

Return type

bool

pop_detected_queue()[source]

Returns contents of DETECTED_QUEUE_BACK register and writes a 1 to pop_request bit of DETECTED_QUEUE_STATUS register.

Returns

DETECTED_QUEUE_BACK

Return type

int

pop_removed_queue()[source]

Returns contents of REMOVED_QUEUE_BACK register and writes a 1 to pop_request bit of REMOVED_QUEUE_STATUS register.

Returns

REMOVED_QUEUE_BACK

Return type

int

raw_reading()[source]

Returns the value of the raw_reading status bit of the EVENT_STATUS register

Returns

raw_object_detected bit

Return type

bool

reset_interrupt_config()[source]

Enable detect interrupt and clear the event_available bit of EVENT_STATUS register

Returns

Nothing

Return type

Void

set_I2C_address(new_address)[source]

Change the I2C address of the Qwiic PIR

Parameters

new_address – the new I2C address to set the Qwiic PIR to

Returns

True if the change was successful, false otherwise.

Return type

bool

set_debounce_time(time)[source]

Write two bytes into the EVENT_DEBOUNCE_TIME register

Parameters

time – the time in milliseconds to set debounce time to The max deounce time is 0xFFFF milliseconds, but the function checks if the entered parameter is valid

Returns

Nothing

Return type

void

time_since_first_detect()[source]

Returns the four bytes of DETECTED_QUEUE_BACK. Time in milliseconds

Returns

DETECTED_QUEUE_BACK

Return type

int

time_since_first_remove()[source]

Returns the four bytes of REMOVED_QUEUE_BACK. Time in milliseconds

Returns

REMOVED_QUEUE_BACK

Return type

int

time_since_last_detect()[source]

Returns the four bytes of DETECTED_QUEUE_FRONT. Time in milliseconds.

Returns

DETECTED_QUEUE_FRONT

Return type

int

time_since_last_remove()[source]

Returns the four bytes of REMOVED_QUEUE_FRONT. Time in milliseconds.

Returns

REMOVED_QUEUE_FRONT

Return type

int

Example 1 - Raw Reading

examples/qwiic_pir_ex1.py
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#!/usr/bin/env python
#-----------------------------------------------------------------------------
# qwiic_pir_ex1.py
#
# Simple Example for the Qwiic PIR Device
#------------------------------------------------------------------------
#
# Written by Andy England @ SparkFun Electronics, January 2021
# 
# This python library supports the SparkFun Electroncis qwiic 
# qwiic sensor/board ecosystem on a Raspberry Pi (and compatable) single
# board computers. 
#
# More information on qwiic is at https://www.sparkfun.com/qwiic
#
# Do you like this library? Help support SparkFun. Buy a board!
#
#==================================================================================
# Copyright (c) 2021 SparkFun Electronics
#
# Permission is hereby granted, free of charge, to any person obtaining a copy 
# of this software and associated documentation files (the "Software"), to deal 
# in the Software without restriction, including without limitation the rights 
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
# copies of the Software, and to permit persons to whom the Software is 
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all 
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
# SOFTWARE.
#==================================================================================
# Example 1
#

from __future__ import print_function
import qwiic_pir
import time
import sys

debounce_time = 0.2

def run_example():

	print("\nSparkFun Qwiic PIR  Example 1\n")
	my_PIR = qwiic_pir.QwiicPIR()

	if my_PIR.begin() == False:
		print("The Qwiic PIR isn't connected to the system. Please check your connection", \
			file=sys.stderr)
		return
		
	print ("Waiting 30 seconds for PIR to stabilize")
	for i in range(0, 30):
		print(i)
		time.sleep(1)

	print("Device Stable")

	while True:
		if my_PIR.raw_reading() is True:
			print("Object Detected")
		else:
			print("Object Removed")
		time.sleep(debounce_time)


if __name__ == '__main__':
	try:
		run_example()
	except (KeyboardInterrupt, SystemExit) as exErr:
		print("\nEnding Example 1")
		sys.exit(0)

Example 2 - Object Detected/Removed

examples/qwiic_pir_ex2.py
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#!/usr/bin/env python
#-----------------------------------------------------------------------------
# qwiic_pir_ex2.py
#
# Simple Example for the Qwiic PIR Device
#------------------------------------------------------------------------
#
# Written by Andy England @ SparkFun Electronics, January 2021
# 
# This python library supports the SparkFun Electroncis qwiic 
# qwiic sensor/board ecosystem on a Raspberry Pi (and compatable) single
# board computers. 
#
# More information on qwiic is at https://www.sparkfun.com/qwiic
#
# Do you like this library? Help support SparkFun. Buy a board!
#
#==================================================================================
# Copyright (c) 2021 SparkFun Electronics
#
# Permission is hereby granted, free of charge, to any person obtaining a copy 
# of this software and associated documentation files (the "Software"), to deal 
# in the Software without restriction, including without limitation the rights 
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
# copies of the Software, and to permit persons to whom the Software is 
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all 
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
# SOFTWARE.
#==================================================================================
# Example 2
#

from __future__ import print_function
import qwiic_pir
import time
import sys

def run_example():

	print("\nSparkFun Qwiic PIR  Example 2\n")
	my_PIR = qwiic_pir.QwiicPIR()

	if my_PIR.begin() == False:
		print("The Qwiic PIR isn't connected to the system. Please check your connection", \
			file=sys.stderr)
		return

	print ("Waiting 30 seconds for PIR to stabilize")
	for i in range(0, 30):
		print(i)
		time.sleep(1)

	print("Device Stable")

	while True:
		if my_PIR.available() is True:
			if my_PIR.object_detected():
				print("Object Detected")
			if my_PIR.object_removed():
				print("Object Removed")
			my_PIR.clear_event_bits()
		time.sleep(0.2)

if __name__ == '__main__':
	try:
		run_example()
	except (KeyboardInterrupt, SystemExit) as exErr:
		print("\nEnding Example 2")
		sys.exit(0)

Example 3 - Queue Usage

examples/qwiic_pir_ex3.py
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#!/usr/bin/env python
#-----------------------------------------------------------------------------
# qwiic_pir_ex3.py
#
# Queue Example for the Qwiic PIR Device
#------------------------------------------------------------------------
#
# Written by Andy England @ SparkFun Electronics, January 2021
# 
# This python library supports the SparkFun Electroncis qwiic 
# qwiic sensor/board ecosystem on a Raspberry Pi (and compatable) single
# board computers. 
#
# More information on qwiic is at https://www.sparkfun.com/qwiic
#
# Do you like this library? Help support SparkFun. Buy a board!
#
#==================================================================================
# Copyright (c) 2021 SparkFun Electronics
#
# Permission is hereby granted, free of charge, to any person obtaining a copy 
# of this software and associated documentation files (the "Software"), to deal 
# in the Software without restriction, including without limitation the rights 
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
# copies of the Software, and to permit persons to whom the Software is 
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all 
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
# SOFTWARE.
#==================================================================================
# Example 3
#

from __future__ import print_function
import qwiic_pir
import time
import sys

def run_example():

	print("\nSparkFun Qwiic PIR  Example 3\n")
	my_PIR = qwiic_pir.QwiicPIR()

	if my_PIR.begin() == False:
		print("The Qwiic PIR isn't connected to the system. Please check your connection", \
			file=sys.stderr)
		return

	print ("Waiting 30 seconds for PIR to stabilize")
	for i in range(0, 30):
		print(i)
		time.sleep(1)

	print("Device Stable")

	while True:
		if my_PIR.is_detected_queue_empty() is False:
			last_detect = my_PIR.time_since_last_detect() / 1000.0
			first_detect =  my_PIR.time_since_first_detect() / 1000.0
			print("\n" + str(last_detect) + "s since last PIR detect   ")
			print(str(first_detect) + "s since first PIR detect")
		else:
			print("Detected queue is empty")

		if my_PIR.is_removed_queue_empty() is False:
			last_remove = my_PIR.time_since_last_remove() / 1000.0
			first_remove =  my_PIR.time_since_first_remove() / 1000.0
			print("\n" + str(last_remove) + "s since last PIR remove   ")
			print(str(first_remove) + "s since first PIR remove")
		else:
			print("Removed queue is empty")
			
		time.sleep(0.2)

if __name__ == '__main__':
	try:
		run_example()
	except (KeyboardInterrupt, SystemExit) as exErr:
		print("\nEnding Example 3")
		sys.exit(0)

Example 4 - Pop Queue

examples/qwiic_pir_ex4.py
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#!/usr/bin/env python
#-----------------------------------------------------------------------------
# qwiic_pir_ex4.py
#
# Queue Popping Example for the Qwiic PIR Device
#------------------------------------------------------------------------
#
# Written by Priyanka Makin @ SparkFun Electronics, March 2021
# 
# This python library supports the SparkFun Electroncis qwiic 
# qwiic sensor/board ecosystem on a Raspberry Pi (and compatable) single
# board computers. 
#
# More information on qwiic is at https://www.sparkfun.com/qwiic
#
# Do you like this library? Help support SparkFun. Buy a board!
#
#==================================================================================
# Copyright (c) 2021 SparkFun Electronics
#
# Permission is hereby granted, free of charge, to any person obtaining a copy 
# of this software and associated documentation files (the "Software"), to deal 
# in the Software without restriction, including without limitation the rights 
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
# copies of the Software, and to permit persons to whom the Software is 
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all 
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
# SOFTWARE.
#==================================================================================
# Example 4
#

from __future__ import print_function
import qwiic_pir
import time
import sys

def run_example():

	print("\nSparkFun Qwiic PIR  Example 4\n")
	my_PIR = qwiic_pir.QwiicPIR()

	if my_PIR.begin() == False:
		print("The Qwiic PIR isn't connected to the system. Please check your connection", \
			file=sys.stderr)
		return

	print ("Waiting 30 seconds for PIR to stabilize")
	for i in range(0, 30):
		print(i)
		time.sleep(1)

	print("Device Stable")

	while True:
		print("\nType 'd' to pop from the detected queue.")
		val = raw_input("Type 'r' to pop from the removed queue: ")
		# If the character is 'd' or 'D', then pop a value off the detected queue
		if val == 'd' or val == 'D':
			print("\nPopped detected queue! The first timestamp in detected queue was: ")
			print(str(my_PIR.pop_detected_queue() / 1000.0))
			
		# If the character is 'r' or 'R', then pop a value off the removed queue
		if val == 'r' or val == 'R':
			print("\nPopped removed queue! The first timestamp in removed queue was: ")
			print(str(my_PIR.pop_removed_queue() / 1000.0))
			
		time.sleep(0.2)

if __name__ == '__main__':
	try:
		run_example()
	except (KeyboardInterrupt, SystemExit) as exErr:
		print("\nEnding Example 4")
		sys.exit(0)

Example 5 - Change I2C Address

examples/qwiic_pir_ex5.py
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#!/usr/bin/env python
#-----------------------------------------------------------------------------
# qwiic_pir_ex5.py
#
# Simple Example to change the I2C address of the Qwiic PIR Device
#------------------------------------------------------------------------
#
# Written by Priyanka Makin @ SparkFun Electronics, March 2021
# 
# This python library supports the SparkFun Electroncis qwiic 
# qwiic sensor/board ecosystem on a Raspberry Pi (and compatable) single
# board computers. 
#
# More information on qwiic is at https://www.sparkfun.com/qwiic
#
# Do you like this library? Help support SparkFun. Buy a board!
#
#==================================================================================
# Copyright (c) 2021 SparkFun Electronics
#
# Permission is hereby granted, free of charge, to any person obtaining a copy 
# of this software and associated documentation files (the "Software"), to deal 
# in the Software without restriction, including without limitation the rights 
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
# copies of the Software, and to permit persons to whom the Software is 
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all 
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
# SOFTWARE.
#==================================================================================
# Example 5
#

from __future__ import print_function
import qwiic_pir
import time
import sys

def run_example():

	print("\nSparkFun Qwiic PIR  Example 5\n")
	my_PIR = qwiic_pir.QwiicPIR()

	if my_PIR.begin() == False:
		print("The Qwiic PIR isn't connected to the system. Please check your connection", \
			file=sys.stderr)
		return

	print("\nEnter a new I2C address for the Qwiic PIR to use.")
	print("\nDon't use the 0x prefix. For instance, if you wanted to")
	print("\nchange the address to 0x5B, you would type 5B and hit enter.")
	
	new_address = input("\nNew address: ")
	# Change to hex
	new_address = int(new_address, 16)
	
	# Check if the user entered a valid address
	if new_address > 0x08 and new_address < 0x77:
		print("\nCharacters received and new address valid!")
		print("\nAttempting to set Qwiic PIR to new address...")
		
		my_PIR.set_I2C_address(new_address)
		print("\nAddress successfully changed!")
		
		# Check that the Qwiic PIR acknowledges on the new address
		time.sleep(0.02)
		if my_PIR.begin() == False:
			print("\nThe Qwiic PIR is not connected to the system. Please check you're connection", \
				file=sys.stderr)
				
		else:
			print("\nPIR acknowledged on new address!")
	
	else:
		print("\nAddress entered not valid I2C address.")

if __name__ == '__main__':
	try:
		run_example()
	except (KeyboardInterrupt, SystemExit) as exErr:
		print("\nEnding Example 5")
		sys.exit(0)

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