def dispQrCode(data, imageFile='qr-code.lcd'):
# setup the QR Code generator
qr = qrcode.QRCode(
version=3,
error_correction=qrcode.constants.ERROR_CORRECT_L,
box_size=10,
border=1,
)
print '> Encoding %d characters' % (len(data))
qr.add_data(data)
qr.make(fit=True)
matrix = qr.get_matrix()
matrixRows = len(matrix)
matrixCols = len(matrix[0])
print '> Generated QR Code: %dx%d pixels' % (matrixCols, matrixRows)
# check the size
if matrixCols > oledImage.SCREEN_WIDTH or matrixRows > oledImage.SCREEN_HEIGHT:
print 'ERROR: Generated QR code is too large for the OLED Display! Try less text!'
exit()
# double the QR code size if it's less than half of the OLED size
dMatrix = oledImage.doubleMatrixSize(matrix)
xOffset = oledImage.SCREEN_WIDTH / 2 - len(dMatrix[0]) / 2
## convert the QR code to an OLED image
screen = oledImage.convertToOledImg(dMatrix, xOffset, 0)
oledImage.printToFile(screen, imageFile)
## display the image on the OLED Expansion
oledExp.driverInit() # initialize the screen
oledExp.setDisplayMode(1) # invert the colours
oledExp.drawFromFile(imageFile) # display the image file
def start_write():
if oledExp.driverInit() != 0:
print 'ERROR: Could not initialize the OLED Expansion'
return False
# this clears the screen
oledExp.clear()
# this sets the colour
oledExp.setDisplayMode(0)
#this sets it to receive text
oledExp.setTextColumns()
#this places the cursor on the second row, first column
oledExp.setCursor(1, 0)
oledExp.write('Welcome.')
oledExp.setCursor(3, 0)
oledExp.write('Loading ticker..')
oledExp.setCursor(5, 0)
oledExp.write('Prices in EUR.')
def __init__(self, width, height):
self.width = width
self.height = height
self.tick = 0
self.cells = {}
self.cached_directions = [
[-1, 1], [0, 1], [1, 1], # above
[-1, 0], [1, 0], # sides
[-1, -1], [0, -1], [1, -1] # below
]
self.populate_cells()
self.prepopulate_neighbours()
oledExp.driverInit()
oledExp.setBrightness(255)
oledExp.setDisplayMode(0)
# initialize
ret = oledExp.driverInit()
print "driverInit return: ", ret
if (ret != 0):
exit()
# write a character
ret = oledExp.writeChar('x')
print "writeChar return: ", ret
if (ret != 0):
exit()
time.sleep(2)
# invert the colours
ret = oledExp.setDisplayMode(1)
print "setDisplayMode return: ", ret
if (ret != 0):
exit()
time.sleep(2)
# dim
ret = oledExp.setDim(1)
print "setDim return: ", ret
if (ret != 0):
exit()
time.sleep(2)
# clear the display
ret = oledExp.clear()
print "clear return: ", ret
from OmegaExpansion import oledExp
from time import localtime, strftime
date = strftime("%d %b %Y %H:%M", localtime())
# this clears the screen
oledExp.clear()
# this sets the colour
oledExp.setDisplayMode(0)
#this sets it to receive text
oledExp.setTextColumns()
#this places the cursor on the second row, first column
oledExp.setCursor(1, 0)
#this writes the time and date
oledExp.write(date)
# first json response printed
#oledExp.setCursor(3,0)
#oledExp.write(c_1_sym+': '+str(c_1_price)+' '+c_1_per+'%')
# initialize
ret = oledExp.driverInit()
print "driverInit return: ", ret
if (ret != 0):
exit()
# write a character
ret = oledExp.writeChar('x')
print "writeChar return: ", ret
if (ret != 0):
exit()
time.sleep(2)
# invert the colours
ret = oledExp.setDisplayMode(1)
print "setDisplayMode return: ", ret
if (ret != 0):
exit()
time.sleep(2)
# dim
ret = oledExp.setDim(1)
print "setDim return: ", ret
if (ret != 0):
exit()
time.sleep(2)
# clear the display
ret = oledExp.clear()
print "clear return: ", ret
import OmegaExpansion.oledExp as oled
oled.driverInit()
oled.setDisplayPower(1)
oled.setDisplayMode(0)
oled.clear()
oled.setCursor(0, 0)
oled.write("Hello")
oled.setCursor(2, 0)
oled.write("World!")
def write():
### this gets the date and time
date = time.strftime("%d %b %Y %H:%M")
#time_now = time.strftime("%X")
### these are the API calls for the four currencies
response_1 = urllib2.urlopen(
'https://api.coinmarketcap.com/v1/ticker/bitcoin/?convert=EUR')
r_1 = json.load(response_1)
response_2 = urllib2.urlopen(
'https://api.coinmarketcap.com/v1/ticker/monero/?convert=EUR')
r_2 = json.load(response_2)
response_3 = urllib2.urlopen(
'https://api.coinmarketcap.com/v1/ticker/iconomi/?convert=EUR')
r_3 = json.load(response_3)
response_4 = urllib2.urlopen(
'https://api.coinmarketcap.com/v1/ticker/siacoin/?convert=EUR')
r_4 = json.load(response_4)
### this sets a place value for the Decimal round up
cents = Decimal('0.001')
#cents2 = Decimal('0.0001')
### these set the JSON resturns to variables
c_1 = r_1[0]
c_2 = r_2[0]
c_3 = r_3[0]
c_4 = r_4[0]
### this grabs info from the dictionaries, and makes them variables
c_1_sym = c_1['symbol']
#c_1_price = round(float(c_1['price_eur']), 2)
c_1_price = c_1['price_eur']
c_1_price = Decimal(c_1_price).quantize(cents, ROUND_HALF_UP)
c_1_per = c_1['percent_change_24h']
c_2_sym = c_2['symbol']
#c_2_price = round(float(c_2['price_eur']), 2)
c_2_price = c_2['price_eur']
c_2_price = Decimal(c_2_price).quantize(cents, ROUND_HALF_UP)
c_2_per = c_2['percent_change_24h']
c_3_sym = c_3['symbol']
#c_3_price = round(float(c_3['price_eur']), 2)
c_3_price = c_3['price_eur']
c_3_price = Decimal(c_3_price).quantize(cents, ROUND_HALF_UP)
c_3_per = c_3['percent_change_24h']
c_4_sym = c_4['symbol']
#c_3_price = round(float(c_3['price_eur']), 2)
c_4_price = c_4['price_eur']
c_4_price = Decimal(c_4_price).quantize(cents, ROUND_HALF_UP)
c_4_per = c_4['percent_change_24h']
### this is the write to screen process
if oledExp.driverInit() != 0:
print 'ERROR: Could not initialize the OLED Expansion'
return False
### this clears the screen
oledExp.clear()
### this sets the colour
oledExp.setDisplayMode(0)
### this sets it to receive text
oledExp.setTextColumns()
### this places the cursor on the second row, first column
oledExp.setCursor(1, 0)
### oledExp.write(' '+date+' '+time_now)
oledExp.write(date)
oledExp.setCursor(3, 0)
oledExp.write(c_1_sym + ': ' + str(c_1_price) + ' ' + c_1_per + '%')
oledExp.setCursor(4, 0)
oledExp.write(c_2_sym + ': ' + str(c_2_price) + ' ' + c_2_per + '%')
oledExp.setCursor(5, 0)
oledExp.write(c_3_sym + ': ' + str(c_3_price) + ' ' + c_3_per + '%')
oledExp.setCursor(6, 0)
oledExp.write(c_4_sym + ': ' + str(c_4_price) + ' ' + c_4_per + '%')
### this sets the scroll type, speed, etc
oledExp.scroll(0, 0, 0, 8 - 1)
import OmegaExpansion.oledExp as oled
oled.driverInit()
oled.setDisplayPower(1)
oled.setDisplayMode(0)
oled.clear()
oled.setCursor(0, 0)
oled.write("Hello")
oled.setCursor(2,0)
oled.write("World!")
