misc: refactored code to work as a setup.py based package

Signed-off-by: Simone Margaritelli <evilsocket@gmail.com>

pwnagotchi/plugins/default/ups_lite.py

@@ -0,0 +1,64 @@
+# Based on UPS Lite v1.1 from https://github.com/xenDE
+#
+# funtions for get UPS status - needs enable "i2c" in raspi-config
+#
+# https://github.com/linshuqin329/UPS-Lite
+#
+# For Raspberry Pi Zero Ups Power Expansion Board with Integrated Serial Port S3U4
+# https://www.ebay.de/itm/For-Raspberry-Pi-Zero-Ups-Power-Expansion-Board-with-Integrated-Serial-Port-S3U4/323873804310
+# https://www.aliexpress.com/item/32888533624.html
+__author__ = 'evilsocket@gmail.com'
+__version__ = '1.0.0'
+__name__ = 'ups_lite'
+__license__ = 'GPL3'
+__description__ = 'A plugin that will add a voltage indicator for the UPS Lite v1.1'
+
+import struct
+
+from pwnagotchi.ui.components import LabeledValue
+from pwnagotchi.ui.view import BLACK
+import pwnagotchi.ui.fonts as fonts
+
+
+# TODO: add enable switch in config.yml an cleanup all to the best place
+class UPS:
+    def __init__(self):
+        # only import when the module is loaded and enabled
+        import smbus
+        # 0 = /dev/i2c-0 (port I2C0), 1 = /dev/i2c-1 (port I2C1)
+        self._bus = smbus.SMBus(1)
+
+    def voltage(self):
+        try:
+            address = 0x36
+            read = self._bus.read_word_data(address, 2)
+            swapped = struct.unpack("<H", struct.pack(">H", read))[0]
+            return swapped * 1.25 / 1000 / 16
+        except:
+            return 0.0
+
+    def capacity(self):
+        try:
+            address = 0x36
+            read = self._bus.read_word_data(address, 4)
+            swapped = struct.unpack("<H", struct.pack(">H", read))[0]
+            return swapped / 256
+        except:
+            return 0.0
+
+
+ups = None
+
+
+def on_loaded():
+    global ups
+    ups = UPS()
+
+
+def on_ui_setup(ui):
+    ui.add_element('ups', LabeledValue(color=BLACK, label='UPS', value='0%/0V', position=(ui.width() / 2 - 25, 0),
+                                       label_font=fonts.Bold, text_font=fonts.Medium))
+
+
+def on_ui_update(ui):
+    ui.set('ups', "%4.2fV/%2i%%" % (ups.voltage(), ups.capacity()))