started development on SMBus sensors

sensor_docs/sysprep.md

@@ -0,0 +1 @@
+# sysprep - How to prepare a Raspberry Pi 3 B+ to run TeraHz

utils/getcdata.py

@@ -1,7 +1,6 @@
 # getcdata.py - fetch the calibrated data from the AS7265x module
 # this program is 3-clause BSD license
 import serial as ser
-from parse import *
 import pandas as pd
 import numpy as np
 import matplotlib.pyplot as plt
@@ -42,4 +41,4 @@ with ser.Serial(uartpath, uartbaud, timeout=uarttout) as sensor:
         spectrum.set_ylabel('uW/cm2')
         win.canvas.draw()
 
-        time.sleep(1)
+        time.sleep(0.1)

utils/smbus-test.py

@@ -0,0 +1,4 @@
+import smbus
+
+bus = smbus.SMBus(1)
+print(bus.read_word_data(0x10, 0x07))