[Jpaytoncfd]

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.

[drivesoslow]

You may want to share the actual python script

[Jpaytoncfd]

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")

[nickr]

This wheel seems to have been invented previously

https://github.com/enlavin/exlink

[Jpaytoncfd]

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?

[nickr]

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.

[nickr]

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