SPI capture guide

#!/usr/bin/env python
import csv
# open file and create reader
with open('input.csv', 'rb') as f:
  with open('output.csv', 'w') as o:
    reader = csv.reader(f, delimiter=',', quotechar='"', skipinitialspace=True)
    # read header
    header = reader.next()

    printstr = ""
    current_packageid = 0
    bytecount = 0
    for row in reader:
      new_packageid = row[1]
      new_time = row[0]
      new_byte = row[2]
      if new_packageid != current_packageid:
        o.write(str(bytecount) + "," + printstr + "\n")
        printstr = new_time + "," + str(new_packageid)
        current_packageid = new_packageid
        bytecount = 0
      #print in decimal so excel understands
      printstr += "," + str(int(new_byte, 16))
      bytecount += 1
    # print last line
    if printstr != "":
      o.write(str(bytecount) + "," + printstr + "\n")