Add in more garbage collecting and initial implementation of file download.

main.py

@@ -1,8 +1,51 @@
-import sdcard
 import uNextcloud
+import inky_helper as ih
 import gc
+import sdcard, uos
+import random
+from picographics import PicoGraphics, DISPLAY_INKY_FRAME_7 as DISPLAY
+from jpegdec import JPEG
+
+from secrets import WIFI_SSID, WIFI_PASSWORD, NEXTCLOUD_USERNAME, NEXTCLOUD_PASSWORD
+
+def get_new_image():
+    sd_spi = machine.SPI(0, sck=machine.Pin(18, machine.Pin.OUT), mosi=machine.Pin(19, machine.Pin.OUT),
+                         miso=machine.Pin(16, machine.Pin.OUT))
+    sd = sdcard.SDCard(sd_spi, machine.Pin(22))
+    uos.mount(sd, "/sd")
+    gc.collect()
+
+    ih.network_connect(WIFI_SSID, WIFI_PASSWORD)
+
+    nc = uNextcloud.uNextcloud("https://cloud.eyecreate.org")
+    nc.set_auth(NEXTCLOUD_USERNAME, NEXTCLOUD_PASSWORD)
+    response = nc.get_folder_items("eink-frame")
+
+    try:
+        last = open('/sd/last_wallpaper', 'r')
+        last_file = last.read()
+        last.close()
+    except OSError:
+        last_file = ""
+
+    if response != None:
+        for item in response:
+            if item.url_path == last_file:
+                response.remove(item)
+        ran = random.choice(response)
+        if ran.mimetype == "image/jpeg":
+            update_last = open('/sd/last_wallpaper', 'w+')
+            update_last.write(ran.url_path)
+            update_last.close()
+            print(ran.url_path)
+            gc.collect()
+            nc.download_file_to_path(ran.url_path, "/sd/current_image.jpg")
+            graphics = PicoGraphics(DISPLAY)
+            j = JPEG(graphics)
+
+            j.open_file("/sd/current_image.jpg")
+            j.decode()
+            graphics.update()
+    #sleep?
+
 
-sd_spi = machine.SPI(0, sck=machine.Pin(18, machine.Pin.OUT), mosi=machine.Pin(19, machine.Pin.OUT), miso=machine.Pin(16, machine.Pin.OUT))
-sd = sdcard.SDCard(sd_spi, machine.Pin(22))
-uos.mount(sd, "/sd")
-gc.collect()