Adapt to new pmt interface and fix invalid read

pmt-view/main.py

 from argparse import ArgumentParser
-import pmt
+import pypmt
 import time
 from bokeh.plotting import figure
 from bokeh.io import show
@@ -7,6 +7,7 @@ from bokeh.embed import file_html
 from bokeh.io import curdoc
 from bokeh.models import ColumnDataSource
 import config
+import pmt
 
 
 def parse_args():
@@ -78,20 +79,22 @@ class Display:
 
     def callback(self):
         if self.state is None:
+            #first read is garbage
+            self.state = self.sensor.read()
             self.state = self.sensor.read()
             time.sleep(1)
         n_state = self.sensor.read()
-        self.cur_second += pmt.seconds(self.state, n_state)
+        self.cur_second += pypmt.PMT.seconds(self.state, n_state)
         row = {
             "Joules": [
-                pmt.joules(self.state, n_state),
+                pypmt.PMT.joules(self.state, n_state),
             ],
-            "Watts": [pmt.joules(self.state, n_state)],
+            "Watts": [pypmt.PMT.joules(self.state, n_state)],
             "Average watts": [
-                pmt.joules(self.state, n_state) / pmt.seconds(self.state, n_state)
+                pypmt.PMT.joules(self.state, n_state) / pypmt.PMT.seconds(self.state, n_state)
             ],
             "Average joules": [
-                pmt.watts(self.state, n_state) / pmt.seconds(self.state, n_state)
+                pypmt.PMT.watts(self.state, n_state) / pypmt.PMT.seconds(self.state, n_state)
             ],
             "Seconds": [self.cur_second],
         }