wifi switcher

seamlessly choose between saved wifi options on cardputer boot. write ssid and password combinations in settings.toml then just add them to the (list of) list "wifi_options". the menu will adjust accordingly so add as many or as few as you like. menu will in theory go off the screen if it is a long list

CARDPUTER CircuitPython/wifi_switcher/code.py

@@ -0,0 +1,146 @@
+from keyb import Keyboard # type: ignore
+import time, os, rtc, json, wifi, supervisor # type: ignore
+import board, busio, sdcardio, storage, terminalio, displayio # type: ignore
+from adafruit_display_text import label # type: ignore
+from adafruit_display_shapes.rect import Rect # type: ignore
+#import pytumblr # type: ignore
+import tumblrapi # type: ignore
+
+### DEFAULT HOME PAGE # # # # # # # # # #
+def home():
+    title_label.text = "Home"
+    title_label.x = 10
+    title_label.y = 14
+
+    ip_label.text = my_ip
+    ip_label.x = 160
+    ip_label.y = 20
+
+    page_label.text = """
+1 - User Info
+2 - Make Post 
+    """
+    page_label.x = 5
+    page_label.y = 30
+
+# # # # # # # # # # # # # # # # # # 
+
+keyb = Keyboard()
+
+
+# SET UP DISPLAY & WIFI
+display = board.DISPLAY
+display_group = displayio.Group()
+display.root_group = display_group
+
+wifi_options = [[os.getenv("WIFI1"),os.getenv("WIFIPW1")],
+                [os.getenv("WIFI2"),os.getenv("WIFIPW2")],
+                [os.getenv("WIFI3"),os.getenv("WIFIPW3")]]
+
+
+h1 = label.Label(terminalio.FONT, text="Hello!", color=0xffffff, scale=2)
+h1.x = 10
+h1.y = 15
+
+count = 0
+menu_labs = []
+for option in wifi_options:
+    if count == 0:
+        menu_lab = label.Label(terminalio.FONT, text = "> " + option[0], color=0xffffff, scale=1)
+    else:
+        menu_lab = label.Label(terminalio.FONT, text = option[0], color=0xffffff, scale=1)
+    menu_lab.x = 10
+    menu_lab.y = 35 + count * 10
+    display.root_group.append(menu_lab)
+    menu_labs.append(menu_lab)
+    count+=1
+
+display.root_group.append(h1)
+
+pos = 0
+while True:
+    key = keyb.scan()
+    if key == "UP":
+        if pos == 0:
+            pass
+        else:
+            menu_labs[pos].text = wifi_options[pos][0]
+            pos -= 1
+        menu_labs[pos].text = "> " + wifi_options[pos][0]
+    elif key == "DOWN":
+        if pos == len(wifi_options)-1:
+            pass
+        else:
+            menu_labs[pos].text = wifi_options[pos][0]
+            pos += 1
+        menu_labs[pos].text = "> " + wifi_options[pos][0]
+    elif key == "\n":
+        WIFI_SSID = wifi_options[pos][0]
+        WIFI_PASS = wifi_options[pos][1]
+        break
+
+
+# SET UP WIFI
+try:
+    wifi.radio.connect(ssid=WIFI_SSID,
+                    password=WIFI_PASS)
+    my_ip = str(wifi.radio.ipv4_address).strip()
+    display.root_group.remove(h1)
+    for lab in menu_labs:
+        display.root_group.remove(lab)
+except ConnectionError as e:
+    txt = label.Label(terminalio.FONT, text = "", color=0xff0000, scale=1)
+    txt.text = "Could not connect to " + WIFI_SSID
+    txt.x = 10
+    txt.y = 100
+    display.root_group.append(txt)
+    time.sleep(10)
+    supervisor.reload()
+
+# # # # # # # # # # # # # # # # # #
+
+
+# SET UP SD CARD
+spi = busio.SPI(board.SD_SCK, MOSI=board.SD_MOSI, MISO=board.SD_MISO)
+cs = board.SD_CS
+
+try:
+    sdcard = sdcardio.SDCard(spi, cs)
+    vfs = storage.VfsFat(sdcard)
+
+    storage.mount(vfs, "/sd") # access files on sd card here
+except OSError:
+    pass # SD card not inserted/found
+
+
+
+
+# Header Bar
+rect = Rect(0, 0, 238, 30, fill=0x1f4476)
+display.root_group.append(rect)
+
+# Page Title
+title_font = terminalio.FONT
+title_color = 0xffffff
+title_label = label.Label(title_font, text="Home", color=title_color, scale=2)
+display.root_group.append(title_label)
+
+
+# Page Text
+page_font = terminalio.FONT
+page_color = 0xffffff
+page_label = label.Label(page_font, text="page_text", color=page_color, scale=1)
+display.root_group.append(page_label)
+
+# IP Label
+ip_font = terminalio.FONT
+ip_color = 0x89a0a8
+ip_label = label.Label(ip_font, text="0.0.0.0", color=ip_color, scale=1)
+display.root_group.append(ip_label)
+
+home()
+
+
+## PROGRAM MAIN LOOP (WORKS FROM HOME PAGE IF OTHER PAGES HAVE THEIR OWN LOOPS)
+while True:
+    key = keyb.scan()