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I have a python script to turn my tv on and off using samsungs eslink serial control.

It works but not overly reliably. Sometimes I have to run the command multiple times to get it to respond. Then the response is not exactly reliable ether. Theres suppose to be 3 bytes returned but I get 4 to 12. If it works I get the three bytes but sometimes mixed into some other data.

Code:
root@livingroom:~# python tvontest.py

ada103010001a6030cf100

root@livingroom:~# python tvontest.py

00030cf100

root@livingroom:~# nano tvontest.py

root@livingroom:~# python tvontest.py

ada103010001a6030cf100

root@livingroom:~# python tvontest.py

030cf10000

root@livingroom:~# python tvontest.py

root@livingroom:~# python tvontest.py

root@livingroom:~# python tvontest.py

030cf100

root@livingroom:~# python tvontest.py

030cf100ada103010001a6ada103010001a6ada103010001

root@livingroom:~# python tvontest.py

030cf100

root@livingroom:~# python tvontest.py

00

root@livingroom:~# python tvontest.py

root@livingroom:~# python tvontest.py

030cf100

root@livingroom:~# ^C

root@livingroom:~# python tvontest.py

ada103010001a6030cf100

root@livingroom:~# python tvontest.py

00030cf100

root@livingroom:~# python tvontest.py

ada103010001a6030cf100

root@livingroom:~# python tvontest.py

00030cf100

root@livingroom:~# python tvon.py

030cff00030cf100

Can someone tell me how I can get the command to repeate until it finds those three bytes? 030cf1 is the three bytes.

You may want to share the actual python script

(2014-09-19, 01:19)drivesoslow Wrote: [ -> ]You may want to share the actual python script

Very good point...

Turns the TV on

Code:
import time, serial

ser = serial.Serial(port='/dev/ttyUSB0', baudrate=9600, timeout=2)

ser.write("\x08\x22\x00\x00\x00\x02\xd4")

data = ser.read(24)

print data.encode('hex')

ser.close()

Turns it off

Code:
import time, serial

ser = serial.Serial(port='/dev/ttyUSB0', baudrate=9600, timeout=2)

ser.write("\x08\x22\x00\x00\x00\x01\xd5")

data = ser.read(24)

print data.encode('hex')

ser.close()

This was one attempt I made. But it did not work.

Code:
import time, serial

ser = serial.Serial(port='/dev/ttyUSB0', baudrate=9600, timeout=1)

while True:

    data = ser.read(24)

    if len(data) > 0:

        ser.close()

        print 'sucess'

        break

    sleep(0.5)

    print 'Retrying'

    ser.write("\x08\x22\x00\x00\x00\x00\xd4")

This wheel seems to have been invented previously

https://github.com/enlavin/exlink

Theres no documentation and I dont see anything in those thats going to make sure a command is received. I am also not sure how to get those to work. How would I make it only send the cmd.on hex?

(2014-09-21, 01:49)Jpaytoncfd Wrote: [ -> ]Theres no documentation and I dont see anything in those thats going to make sure a command is received. I am also not sure how to get those to work. How would I make it only send the cmd.on hex?

Well _snd_cmd waits for and analyses a response.

There is a cmd_power_on defined.

I don't have a Samsung TV, just trying to help. May I simply suggest you play with the github code.

PS your code to turn on and off seems to include xD4 and xD5 at the end of the string, the github code doesn't. is this a problem perhaps?

Also note the comments about the turning on doesn't actually work. I don't know if this is a general comment on Samsung TVs, or a problem with this code or what.

PS again I guess the d4 d5 thing is the checksum which is defined and used in the github code.

Jpaytoncfd

drivesoslow

Jpaytoncfd

nickr

Jpaytoncfd

nickr

nickr