#!/usr/bin/env python
# -*- coding: utf8 -*-
import RPi.GPIO as GPIO
import MFRC522
import signal
continue_reading = True
# Capture SIGINT for cleanup when the script is aborted
def end_read(signal,frame):
global continue_reading
print "Ctrl+C captured, ending read."
continue_reading = False
GPIO.cleanup()
# Hook the SIGINT
signal.signal(signal.SIGINT, end_read)
print "Place card please..."
# Create an object of the class MFRC522
MIFAREReader = MFRC522.MFRC522()
# This loop keeps checking for chips. If one is near it will get the UID and authenticate
while continue_reading:
# Scan for cards
(status,TagType) = MIFAREReader.MFRC522_Request(MIFAREReader.PICC_REQIDL)
# If a card is found
if status == MIFAREReader.MI_OK:
print "Card detected"
# Get the UID of the card
(status,uid) = MIFAREReader.MFRC522_Anticoll()
# If we have the UID, continue
if status == MIFAREReader.MI_OK:
# Print UID
print "Card read UID: "+str(uid[0])+","+str(uid[1])+","+str(uid[2])+","+str(uid[3])
# This is the default key for authentication
key = [0xFF,0xFF,0xFF,0xFF,0xFF,0xFF]
# Select the scanned tag
MIFAREReader.MFRC522_SelectTag(uid)
# Dump the data
MIFAREReader.MFRC522_DumpClassic1K(key, uid)
# Stop
MIFAREReader.MFRC522_StopCrypto1()
print "--- Finished ---"
continue_reading = False
GPIO.cleanup()
#!/usr/bin/env python
# -*- coding: utf8 -*-
import RPi.GPIO as GPIO
import MFRC522
import signal
continue_reading = True
# Capture SIGINT for cleanup when the script is aborted
def end_read(signal,frame):
global continue_reading
print "Ctrl+C captured, ending read."
continue_reading = False
GPIO.cleanup()
# Hook the SIGINT
signal.signal(signal.SIGINT, end_read)
print "Place card please..."
# Create an object of the class MFRC522
MIFAREReader = MFRC522.MFRC522()
# This loop keeps checking for chips. If one is near it will get the UID and authenticate
while continue_reading:
# Scan for cards
(status,TagType) = MIFAREReader.MFRC522_Request(MIFAREReader.PICC_REQIDL)
# If a card is found
if status == MIFAREReader.MI_OK:
print "Card detected"
# Get the UID of the card
(status,uid) = MIFAREReader.MFRC522_Anticoll()
# If we have the UID, continue
if status == MIFAREReader.MI_OK:
# Print UID
print "Card read UID: "+str(uid[0])+","+str(uid[1])+","+str(uid[2])+","+str(uid[3])
# This is the default key for authentication
key = [0xFF,0xFF,0xFF,0xFF,0xFF,0xFF]
# Select the scanned tag
MIFAREReader.MFRC522_SelectTag(uid)
# Dump the data
MIFAREReader.MFRC522_DumpClassic1K(key, uid)
# Stop
MIFAREReader.MFRC522_StopCrypto1()
# wait card removed
print "--- Remove Card ---"
card_removed = False
card_removed_counter = 5
while not card_removed:
(status,TagType) = MIFAREReader.MFRC522_Request(MIFAREReader.PICC_REQIDL)
if status != MIFAREReader.MI_OK:
card_removed_counter = card_removed_counter-1
if card_removed_counter==0:
card_removed = True
else:
card_removed_counter = 5
print "--- Card removed---"
print "Place card again please..."
#include <iostream>
using namespace std;
int main(int argc, char** argv) {
std::cout << "Hello World!\n";
#ifdef __linux__
std::cout << "__linux__\n";
#elif defined(__unix__)
std::cout << "__unix__\n";
#elif defined(_WIN64)
std::cout << "Windows 64\n";
#elif defined(_WIN32)
std::cout << "Windows 32\n";
#endif
#if __WORDSIZE == 64
std::cout << "64 bit\n";
#else
std::cout << "32 bit\n";
#endif
return 0;
}
from PIL import Image
import numpy as np
from matplotlib import pyplot as plt
import cv2
img = Image.open('photo.jpg')
#img = Image.open('b.png')
imgArr = np.asarray(img)
plt.subplot(221), plt.imshow(img)
color = ('r','g','b')
for i,col in enumerate(color):
histr = cv2.calcHist([imgArr],[i],None,[256],[0,256])
plt.subplot(222), plt.plot(histr,color = col)
plt.xlim([0,256])
plt.xlim([0,256])
plt.show()
import sys
import cv2
print("Python version: \n" + sys.version)
print("cv2 version: " + cv2.__version__)
#img1 and img2 must be in same size
img1 = cv2.imread('Raspberry_Pi_Logo.png', 1)
hsv1 = cv2.cvtColor(img1, cv2.COLOR_RGB2HSV)
h,s,v = cv2.split(hsv1)
hsv2 = cv2.merge((h,s,v))
img2 = cv2.cvtColor(hsv2, cv2.COLOR_HSV2RGB)
cv2.imshow('img1',img1)
cv2.imshow('hsv1',hsv1)
cv2.imshow('h', h)
cv2.imshow('s', s)
cv2.imshow('v', v)
cv2.imshow('hsv2',hsv2)
cv2.imshow('img2',img2)
cv2.waitKey(0)
cv2.destroyAllWindow()
Python 2.7.9 (default, Mar 8 2015, 00:52:26)
[GCC 4.9.2] on linux2
Type "copyright", "credits" or "license()" for more information.
>>> from gpiozero import LED, Button
>>> led=LED(2)
>>> button=Button(3)
>>> button.when_pressed=led.on
>>> button.when_released=led.off
>>>
| RFID-RC522 pin Name | Pin # | Raspberry Pi 2 Pin name |
|---|---|---|
| SDA | 24 | GPIO8 |
| SCK | 23 | GPIO11 |
| MOSI | 19 | GPIO10 |
| MISO | 21 | GPIO9 |
| IRQ | - | no connection |
| GND | GND | GND |
| RST | 22 | GPIO25 |
| 3.3V | 1 | 3V3 |
import sys
import cv2
print("Python version: \n" + sys.version)
print("cv2 version: " + cv2.__version__)
#img1 and img2 must be in same size
img1 = cv2.imread('Raspberry_Pi_Logo.png', 1)
img2 = (255-img1)
cv2.imshow('img1',img1)
cv2.imshow('img2',img2)
cv2.waitKey(0)
cv2.destroyAllWindow()
import picamera
import picamera.array
import time
import cv2
from matplotlib import pyplot as plt
import Tkinter
import Image, ImageTk
import sys
def capturePiCam():
with picamera.PiCamera() as camera:
cap=picamera.array.PiRGBArray(camera)
camera.resolution = (640, 480)
camera.start_preview()
time.sleep(3)
camera.capture(cap,format="bgr")
global img
img =cap.array
img = (255-img)
#- display on OpenCV window -
def displayAtOpenCV():
cv2.namedWindow('imageWindow', cv2.WINDOW_AUTOSIZE)
cv2.imshow('imageWindow',img)
cv2.waitKey(0)
cv2.destroyAllWindows()
#- display with matplotlib -
def displayAtPyplot():
plt.figure().canvas.set_window_title("Hello Raspberry Pi")
plt.imshow(cv2.cvtColor(img, cv2.COLOR_BGR2RGB))
plt.xticks([]), plt.yticks([]) # to hide tick values on X and Y axis
plt.show()
#- display on Tkinter -
def displayAtThinter():
root = Tkinter.Tk()
b,g,r = cv2.split(img)
img2 = cv2.merge((r,g,b))
img2FromArray = Image.fromarray(img2)
imgtk = ImageTk.PhotoImage(image=img2FromArray)
Tkinter.Label(root, image=imgtk).pack()
root.mainloop()
def displayUsage():
print("usage: ")
print("python pyCV_picam.py 1 - display wiyh OpenCV window")
print("python pyCV_picam.py 2 - display with matplotlib")
print("python pyCV_picam.py 3 - display with Tkinter")
if len(sys.argv) != 2:
displayUsage()
sys.exit()
opt = sys.argv[1]
if opt=="1":
print("display wiyh OpenCV window")
capturePiCam()
displayAtOpenCV()
elif opt=="2":
print("display with matplotlib")
capturePiCam()
displayAtPyplot()
elif opt=="3":
print("display with Tkinter")
capturePiCam()
displayAtThinter()
else:
displayUsage()
import sys
import cv2
print("Python version: \n" + sys.version)
print("cv2 version: " + cv2.__version__)
#img1 and img2 must be in same size
img1 = cv2.imread('Raspberry_Pi_Logo.png', 1)
b,g,r = cv2.split(img1)
img2 = cv2.merge((r,g,b))
cv2.imshow('img1',img1)
cv2.imshow('img2',img2)
cv2.imshow('r', r)
cv2.imshow('g', g)
cv2.imshow('b', b)
cv2.waitKey(0)
cv2.destroyAllWindow()
import sys
import cv2
import numpy
import urllib
print("Python version: \n" + sys.version)
print("cv2 version: " + cv2.__version__)
print("numpy version: " + numpy.__version__)
print("urllib version: " + urllib.__version__)
#img1 and img2 must be in same size
img1 = cv2.imread('Raspberry_Pi_Logo.png', 1)
img2 = cv2.imread('opencv-logo-white.png', 1)
imgAdd = cv2.add(img1, img2)
imgAddWeighted = cv2.addWeighted(img1, 0.7, img2, 0.3, 0)
imgSub = cv2.subtract(img1, img2)
cv2.imshow('img1',img1)
cv2.imshow('img2',img2)
cv2.imshow('imgAdd',imgAdd)
cv2.imshow('imgAddWeighted',imgAddWeighted)
cv2.imshow('imgSub',imgSub)
cv2.waitKey(0)
cv2.destroyAllWindow()
import sys
import cv2
import numpy
import urllib
print("Python version: \n" + sys.version)
print("cv2 version: " + cv2.__version__)
print("numpy version: " + numpy.__version__)
print("urllib version: " + urllib.__version__)
url = 'http://goo.gl/41cgQr'
data = urllib.urlopen(url)
img = numpy.asarray(bytearray(data.read()), dtype='uint8')
img = cv2.imdecode(img, cv2.IMREAD_COLOR)
print("")
print "image info"
print "#row #column #channel"
print img.shape
print "#row * #column * #channel"
print img.size
cv2.imshow('image',img)
cv2.waitKey(0)
cv2.destroyWindow('image')
import sys
from PyQt4.QtGui import *
from PyQt4.QtCore import QT_VERSION_STR
from PyQt4.Qt import PYQT_VERSION_STR
from sip import SIP_VERSION_STR
a = QApplication(sys.argv)
w = QWidget()
w.resize(320, 240)
w.setWindowTitle("Hello World!")
label = QLabel()
info = "Qt version:" + QT_VERSION_STR + \
"\nSIP version:" + SIP_VERSION_STR + \
"\nPyQt version:" + PYQT_VERSION_STR
label.setText(info)
hbox = QHBoxLayout()
hbox.addWidget(label)
w.setLayout(hbox)
w.show()
sys.exit(a.exec_())
 |
| PyQt4 hello.py run on Python 2 |
 |
| PyQt4 hello.py run on Python 3 |
import piggyphoto
C = piggyphoto.camera()
print C.abilities
C.capture_preview('prev.jpg')
C.capture_image('image.jpg')
