Arduino UNIX Time - Syncing Computer UNIX Time to Arduino Time with Python Post: 303042410

Sponsored Content

Top Forums Programming Arduino UNIX Time - Syncing Computer UNIX Time to Arduino Time with Python Post 303042410 by Neo on Tuesday 24th of December 2019 12:20:18 AM

12-24-2019

Administrator

Here is the Python 2.7.16 code I quickly put together to send unix time to the Arduino UNO.

I assume it also works on Python3, but I have not tested it because I have not completely upgrade python on my mac pro yet, sorry about that.

Code:

# -----------------------------------------------------------
# Sync Unix Time with Arduino Initial Draft 0.1
# Written on macOS, tested with Python 2.7.16
# Neo, December 2019
# This code needs refinement to be more general
# I will improve this code later when I need to use it in an Arduino project
# For now, it works "OK" and serves it purpose
# Feel free to improve, modify as you like.
# -----------------------------------------------------------
import serial
import time

ser = serial.Serial(
    port='/dev/cu.usbserial-40',  #change this for your device
    baudrate=9600,
    parity=serial.PARITY_NONE,
    stopbits=serial.STOPBITS_ONE,
    bytesize=serial.EIGHTBITS,
    timeout=0)

print("connected to: " + ser.portstr)

# this will store the line
line = []
ux = 0
a = False
debugScript = False
offset = 2 .  #adjust this time offset (in seconds) to account for various time delays in script and transferring via the serial port, etc. to insure the Arduino is in closer sync to the computer
time_int = 1000  # this can be any number greater than zero and less than recent unix time
count = 0
while True:
    if debugScript:
        print(str(int(time.time())))
    for c in ser.read():
        if not a:
            if ux < time_int:
                ser.write("T")
                ux = int(time.time())+offset
                ser.write(str(ux))
                ser.write("\n")
                ser.flush()
                if debugScript:
                    print("unixtime: " + str(ux))
        line.append(c)
        count += 1
        if c == '\n':
            print("Line("+str(count)+"): " + ''.join(line))
            x = int(time.time())+offset
            print("time("+str(count)+"): " + str(x) + "\n")
            line = []
            a = True
            break
ser.close()

Neo

View Public Profile for Neo

Visit Neo's homepage!

Find all posts by Neo

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Help me!First time use UNIX.

I am assigned a programming work.It is my first time to use unix. The task is writing a shell script to interrogate the university Unix operating system to determine the number of "Runnable" processes at any given time.Then append the result,along with a time-stamp,on a log file. Also there are...

2. UNIX for Advanced & Expert Users

How To Provide Time Sync Using Nts-150 Time Server On Unix Network?

can anybody tel lme,how to instal NTS -150 on a unix network,it needs some patch to fetch time frm serve,,??

3. Shell Programming and Scripting

Convert Unix Time to Standard Time

I have a list of interfaces and time the interface was last active. I can't figure out how to convert the time in the second column, Fa1/14 0 Se0/0/0 0 Fa1/11 0 Fa1/9 0 Fa1/0 0 Se0/0/1 1240401408 Gi1/0 0 Fa0/0 1240401408 Fa1/3 0 Fa1/8 0 Fa1/15 0 Fa1/13 0 Fa1/10 0 Fa1/1 0 Fa1/12...

4. Shell Programming and Scripting

Unix time

how do i convert unix time to show normal eg i have unix time 1297702242 and i want it converted to normal time. how do i do that

5. Shell Programming and Scripting

How to get time duration between two human readable time stamp in Unix?

Here is two time I have: Jul 12 16:02:01 Jul 13 01:02:01 and how can I do a simple match to get difference between two time which is 09:00:00 Thanks in advance.

6. UNIX for Dummies Questions & Answers

Converting string date time to unix time in AWK

I'd like to convert a date string in the form of sun aug 19 09:03:10 EDT 2012, to unixtime timestamp using awk. I tried This is how each line of the file looks like, different date and time in this format Sun Aug 19 08:33:45 EDT 2012, user1(108.6.217.236) all: test on the 17th ...

7. Shell Programming and Scripting

Adding time to date time in UNIX shell scipting

I needed some help in adding a duration (in seconds) to a start time (in hhmmss format) and a start date (in mmddyy format) in order to get an end date and end time. The concept of a leap year is also to be considered while incrementing the day. The code/ function that I have formed so far is as...

8. Shell Programming and Scripting

Convert UTC time into current UNIX sever time zone

Hi guys thanks for the help for my previous posts.Now i have a requirement that i download a XMl file which has UTC time stamp.I need to convert UTC time into Unix server timezone. For ex if the time zone of unix server is CDT then i need to convert into CDT.whatever may be the system time...

9. Programming

Arduino-cli - Uploading to Unknown Chinese Arduino Boards using the Arduino Command Line Interface

In my further exploration of Arduino, today I decided to install the arduino-cli on my mac today. https://github.com/arduino/arduino-cli I followed the instructions for macOS but when I got to this part: arduino-cli board list I got the dreaded "Unknown" Fully Qualified Board Name...

LEARN ABOUT DEBIAN

ncpd

ncpd(8) 						  System administration commands						   ncpd(8)

NAME

       ncpd - Daemon which handles the serial link to a Psion

SYNOPSIS

       ncpd [-V] [-h] [-v log-class] [-d] [-e] [-p [host:]port] [-s device] [-b baud-rate] [long-options]

DESCRIPTION

       ncpd  is  the  daemon which handles the serial link to your Psion. It listens at port 7501 for local connections and provides basic PLP/NCP
       services for plpfuse and plpftp and other front-ends. It auto-connects to the psion, even after unplugging/switching off therefore  it  can
       run all the time if you can dedicate a serial device to it.

OPTIONS

       -V, --version
	      Display the version and exit

       -h, --help
	      Display a short help text and exit.

       -e, --autoexit
	      Exit automatically if the device is disconnected. Furthermore, use the current tty as I/O device. This option is intended for start-
	      ing ncpd on demand using mgetty's auto-detect function. (A patch for mgetty is needed for that).

       -v, --verbose=log-class
	      Increase the logging level of the program. the possible values for log-class are:

	      nl     Set NCP debug level to LOG

	      nd     Set NCP debug level to DEBUG

	      ll     Set Link debug level to LOG

	      ld     Set Link debug level to DEBUG

	      pl     Set Packet debug level to LOG

	      pd     Set Packet debug level to DEBUG

	      ph     Set Packet debug level to HANDSHAKE

	      m      Set overall debug level to verbose

	      all    Turn on all the above logging on.

       -d, --dontfork
	      Do not background the daemon.

       -p, --port=[host:]port
	      Specify the port to listen on - by default the value for the host is 127.0.0.1 and the value for the port is looked up in  /etc/ser-
	      vices using the key psion/tcp.  If it is not found there, a default value of 7501 is used.

       -s, --serial=device
	      Specify the serial device to use to connect to the Psion - this defaults to /dev/ttyS0

       -b, --baudrate=baud-rate
	      Specify  the  baud  rate	to use for the serial connection. If the word auto is specified, ncpd cycles through baud-rates of 115200,
	      57600, 38400, 19200 and 9600 baud. Default setting is auto.

SEE ALSO

       plpfuse(8), plpprintd(8), plpftp(1), sisinstall(1)

AUTHOR

       Fritz Elfert
       Heavily based on  p3nfsd  by  Rudolf  Koenig  (rfkoenig@immd4.informatik.uni-erlangen.de)  and  plp_1_7	by  Philip  Proudman  (phil@proud-
       man51.freeserve.co.uk)
       Patches from Matt Gumbley (matt@gumbley.demon.co.uk)
       Man page by John Lines (john+plpman@paladin.demon.co.uk)

plptools 1.0.9							    2008/03/13								   ncpd(8)