kopia lustrzana https://github.com/pimoroni/pimoroni-pico
140 wiersze
3.6 KiB
Python
140 wiersze
3.6 KiB
Python
import badger2040w
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import qrcode
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import time
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import os
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import badger_os
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# Check that the qrcodes directory exists, if not, make it
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try:
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os.mkdir("/qrcodes")
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except OSError:
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pass
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# Check that there is a qrcode.txt, if not preload
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try:
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text = open("/qrcodes/qrcode.txt", "r")
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except OSError:
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text = open("/qrcodes/qrcode.txt", "w")
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text.write("""https://pimoroni.com/badger2040w
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Badger 2040 W
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* 296x128 1-bit e-ink
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* 2.4GHz wireless
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* five user buttons
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* user LED
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* 2MB QSPI flash
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Scan this code to learn
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more about Badger 2040 W.
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""")
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text.flush()
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text.seek(0)
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# Load all available QR Code Files
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try:
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CODES = [f for f in os.listdir("/qrcodes") if f.endswith(".txt")]
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TOTAL_CODES = len(CODES)
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except OSError:
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pass
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print(f'There are {TOTAL_CODES} QR Codes available:')
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for codename in CODES:
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print(f'File: {codename}')
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display = badger2040w.Badger2040W()
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code = qrcode.QRCode()
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state = {
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"current_qr": 0
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}
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def measure_qr_code(size, code):
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w, h = code.get_size()
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module_size = int(size / w)
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return module_size * w, module_size
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def draw_qr_code(ox, oy, size, code):
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size, module_size = measure_qr_code(size, code)
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display.set_pen(15)
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display.rectangle(ox, oy, size, size)
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display.set_pen(0)
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for x in range(size):
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for y in range(size):
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if code.get_module(x, y):
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display.rectangle(ox + x * module_size, oy + y * module_size, module_size, module_size)
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def draw_qr_file(n):
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display.led(128)
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file = CODES[n]
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codetext = open("/qrcodes/{}".format(file), "r")
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lines = codetext.read().strip().split("\n")
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code_text = lines.pop(0)
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title_text = lines.pop(0)
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detail_text = lines
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# Clear the Display
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display.set_pen(15) # Change this to 0 if a white background is used
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display.clear()
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display.set_pen(0)
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code.set_text(code_text)
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size, _ = measure_qr_code(128, code)
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left = top = int((badger2040w.HEIGHT / 2) - (size / 2))
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draw_qr_code(left, top, 128, code)
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left = 128 + 5
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display.text(title_text, left, 20, badger2040w.WIDTH, 2)
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top = 40
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for line in detail_text:
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display.text(line, left, top, badger2040w.WIDTH, 1)
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top += 10
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if TOTAL_CODES > 1:
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for i in range(TOTAL_CODES):
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x = 286
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y = int((128 / 2) - (TOTAL_CODES * 10 / 2) + (i * 10))
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display.set_pen(0)
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display.rectangle(x, y, 8, 8)
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if state["current_qr"] != i:
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display.set_pen(15)
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display.rectangle(x + 1, y + 1, 6, 6)
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display.update()
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badger_os.state_load("qrcodes", state)
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changed = not badger2040w.woken_by_button()
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while True:
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if TOTAL_CODES > 1:
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if display.pressed(badger2040w.BUTTON_UP):
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if state["current_qr"] > 0:
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state["current_qr"] -= 1
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changed = True
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if display.pressed(badger2040w.BUTTON_DOWN):
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if state["current_qr"] < TOTAL_CODES - 1:
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state["current_qr"] += 1
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changed = True
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if display.pressed(badger2040w.BUTTON_B) or display.pressed(badger2040w.BUTTON_C):
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display.set_pen(15)
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display.clear()
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badger_os.warning(display, "To add QR codes, connect Badger 2040 W to a PC, load up Thonny, and add files to /qrcodes directory.")
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time.sleep(4)
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changed = True
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if changed:
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draw_qr_file(state["current_qr"])
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badger_os.state_save("qrcodes", state)
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changed = False
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# Halt the Badger to save power, it will wake up if any of the front buttons are pressed
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display.halt()
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