log_adc.py

"""
Title: Collecting and Writing Data to a LogFile
Created on Thu Oct 10 14:49:20 2017
Modified: on Thu Oct 12 22:45:08 2017
@author: Kevin Machado Gamboa
Ref: Tim Cox - Raspberry pi Cookbook for python programmers. chapter 7 Pag. 209
"""
# !/usr/bin/env python3
# log_adc.c
# -----------------------------------------------------------------------------
## Importing modules and creating variables

import time
import datetime
import data_adc as dataDevice
DEBUG=True
FILE=True
VAL0=0;VAL1=1;VAL2=2;VAL3=3 #Set data order
FORMATHEADER="\t%s\t%s\t%s\t%s\t%s"
FORMATBODY="%d\t%s\t%f\t%f\t%f\t%f"

if(FILE):f = open("data.log",'w') # Create a file in the current 

def timestamp():
    ts=time.time()
    return datetime.datetime.fromtimestamp(ts).strftime(
        '%Y-%m-%d %H:%M:%S')

def main():
    counter=0
    myData = dataDevice.device() # Create the object call myData
    myDataNames=myData.getName()
    header=(FORMATHEADER%("Time",
                          myDataNames[VAL0],myDataNames[VAL1],
                          myDataNames[VAL2],myDataNames[VAL3]))
    if(DEBUG):print (header)

    if(FILE):f.write(header+"\n")

    while(1):
        data=myData.getNew()
        counter+=1
        body=(FORMATBODY%(counter,timestamp(),
                          data[0],data[1],data[2],data[3]))
        if(DEBUG):print (body)
        if(FILE):f.write(body+"\n")
        time.sleep(0.1)

try:
    main()
        
finally:
    f.close()
    #END