Simple test¶
Ensure your device works with this simple test.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | import sys
import adafruit_miniqr
# For drawing filled rectangles to the console:
out = sys.stdout
WHITE = "\x1b[1;47m \x1b[40m"
BLACK = " "
def prettyprint_QR(matrix):
# white 4-pixel border at top
for _ in range(4):
for _ in range(matrix.width+8):
out.write(WHITE)
print()
for y in range(matrix.height):
out.write(WHITE*4) # 4-pixel border to left
for x in range(matrix.width):
if matrix[x, y]:
out.write(BLACK)
else:
out.write(WHITE)
out.write(WHITE*4) # 4-pixel bporder to right
print()
# white 4-pixel border at bottom
for _ in range(4):
for _ in range(matrix.width+8):
out.write(WHITE)
print()
qr = adafruit_miniqr.QRCode(qr_type=3, error_correct=adafruit_miniqr.L)
qr.add_data(b'https://www.adafruit.com')
qr.make()
print(qr.matrix)
prettyprint_QR(qr.matrix)
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