checkpoint_3_2.py

from webiopi.devices.analog import MCP3208
import pylab
import numpy as np

ADC0 = MCP3208(chip = 0)

print("Analog Channel Count {0}").format(ADC0.analogCount())
print("Analog Bit Resolution  {0}").format(ADC0.analogResolution())
print("Analog Maximum {0}").format(ADC0.analogMaximum())
print("Analog Reference Voltage {0}").format(ADC0.analogReference())

x = [0.0]*100
y = [0.0]*100

for i in range(100):
  #print("Analog bit resolution at input channel {0}: {1}").format( 3, ADC0.analogRead(3))
  #print("Analog Read Voltage Channel {0}: {1}").format( 3, ADC0.analogReadVolt(3))
  y[i] = ADC0.analogRead(3)
  x[i] = i + 1
  print("[{0}]  {1}  {2}").format(x[i], y[i], ADC0.analogReadVolt(3))

pylab.plot(x, y)
pylab.xlabel('Sample No')
pylab.ylabel('Bit Resolution')
pylab.title('Bit Resolution vs Sample No.')
pylab.grid(True)
pylab.savefig("sample_3_2.pdf")
pylab.show()