Sony TV remote decoder using PIC16F73

[karthickiw]

hai,

how decode the sony TV remote using PIC16F73. please give sample coding

[rnielsen]

Ya know, I'm wondering if it would be possible to place a sticky for new users stating that we are not here to do their student projects for them. Maybe, let them know that we're here to assist but that they, first, need to put in some kind of effort on their own project.

We get periods when several people simply log on and ask for code. They don't give any examples that they have tried or show any effort of their own. Maybe I'm just in a foul mood because my EX called me this morning.

Karthickiw, we're here to assist you. You need to do a little research of your own first. If you don't know where to start then simply state that fact. We'll point you in the right direction. If you're a student, the best way for you to learn is trial and error. You'll never learn anything if things are handed to you.

Ronald, a bit pizzed off.

[karthickiw]

thank you sir. ok i try my own, please give some idea about the decoding the TV remote signal.

[newguy]

Search the Code Library. There are several examples of IR remote decoders. Also remember that google is your friend.

[Douglas Kennedy]

rnielsen wrote

[mickent]

One good thing about spoon feeding students is that when they get into the work force they will be useless; leaving more work for those of us that took the hard road.
_________________
Mick

[rberek]

Being useless, that might mean they end up being our managers

[treitmey]

LOL

[rnielsen]

So THAT's how my manager got there!

I had one manager say: Those who can't do, teach. Those that can't teach, administrate.

[Steve H]

Oh.... You guy's are killing me, too funny...

Opps, here comes the boss - everybody look busy!

;-)

Steve H.

[raham]

[Humberto]

[Gerhard]

I started programing on the pic about a month ago and yes i am a student and yes i did get the same type of coments in the begining. Firstly just tell the people if you know anything and if you dont;s, as has been said, they will point you in the right direction.
What i have learned in the past month on pics because of trial and error no other student will be able to match. SO JUST TO MAKE MY POINT.
THANKS TO ALL YOU PROFESIONALS THAT ACTUALLY KNOW WHAT GOES ON THAT ARE WILLING TO BE FRUSTRATED BY OUR SILLY QUESTIONS.

[densimitre]

Hi

Take a look on this..

1.- http://picmania.garcia-cuervo.com/Experimentos_IR.php#DecoProt
2.- Googling for:

// sony.c - Serial <==> Sony IR Remote conversion
// Version 1.0
//
// Robert Poor
// MIT Media Laboratory
// January, 2000

3.- ////////////////////////////////////////////////////////////////////////////////
//Análisis:
// - Protocolo IR: SIRCS =>device word(5) + command word(7) =>12 bits
// Trama: envío en modo LSB
// T: 0,6ms
// Start Bit: 4T(1)+T(0) => 2,4ms+0,6ms
// 1 Lógico : 2T(1)+T(0) => 1,2ms+0,6ms
// 0 Lógico : T(1)+T(0) => 0,6ms+0,6ms
// - Procedimiento:
// Analizar los tiempos altos (1) de la trama IR recivida, para evaluar si se
// trata de un 1 o un 0, respectivamente. Desechar los tiempos T(0).
// Para lograr lo anterior, se hará uso del TMRO con DIV_16 (16us@4MHz), y la interrupción
// de RB0, en ambos flancos. Primero se detectará el paso de L_TO_H, setear TMR0=0,
// luego setear interrupcion de H_TO_L, al activarse obtener el valor de TMRO, tras
// lo cual se verificará si se trata del start bit, un 1 o un 0 lógico. Contar
// hasta obtener 12 bits.
// Como los datos son recividos en formato LSB, al decodificar cada bit debe ejecutarse la instruccion:
// shift_right(&Cmd, 2, 1/0) ==> desplazar a la derecha el largo de 2 bytes (12 bits de WORD),
// el bit 1 o 0, según corresponda. Cmd corresponde a un long que almacena el comando.
// Se puede optar por recivir los primeros 7 bits y desechar los 5 siguientes.
// - Valores:
// .TMR0(2,4ms)=2,4ms/0,016ms=150 ==>rango aceptable : 110/180 o >100
// .TMR0(1,2ms)=1,2ms/0,016ms= 75 ==>rango aceptable : 60/ 90
// .TMR0(0,6ms)=0,6ms/0,016ms= 37.5 ~ 38 ==>rango aceptable : 20/ 50
// 8.2208Mhz==>Tc=0,16us
//


Best Regards