Now to something completely different

[ardhuru]

Hi, the irda signal is not modulated; so, you first need to get rid of the TSOP-IR-Receiver.

Adding irda capability to a PIC could be achieved a number of ways. Microchip themselves have irda codec solutions. Or, look up www.sirpic.com. The guy there, Ravi, specializes in Micro-to-irda solutions in varying degrees of customization. At this site, you'll also find a software-only irda implementation for PICs contributed by another person.

Regards

Anand

[Ted's]

Hi, the irda signal is not modulated; so, you first need to get rid of the TSOP-IR-Receiver.

Adding irda capability to a PIC could be achieved a number of ways. Microchip themselves have irda codec solutions. Or, look up www.sirpic.com. The guy there, Ravi, specializes in Micro-to-irda solutions in varying degrees of customization. At this site, you'll also find a software-only irda implementation for PICs contributed by another person.

Regards

Anand

Or modulate the signal. This is what I want to do. Being dependend on light situations has always been the greatest drawback of irda.

Is there a sorce code on his site? I couldn't find any...

[ardhuru]

http://sirpic.com/LabCPs2ir.html

[Ted's]

I am using a vb-clone for palm programming.

The only option is to use IrDA.

If I use IrDA,open the connection and send the value 3211 using a baudrate of 38400 and having the TSOP attached to the pic, what should I receive and how do I convert it back to the value via pbp?

Please no links this time. I want to see this problem solved step by step so I can create a code suitable according to this example.

[ardhuru]

Ted, here are my views. Consumer IR, which uses modulation, has range, but cannot handle large data flows; that is why irda is not modulated, to enable a relatively higher bandwidth.

You cannot, therefore, modulate and demodulate the raw irda at each end and expect good results (unless you design a complex data buffering system to be stuck in between).

If you must use irda, you will have to accept the raw irda distance limitations.

[Ted's]

There is no need for high bandwidth.

There is a need for emulating the 38khz carrier frequency using IrDA as IrDA is the only way to access the IR Port.

What I found is that using a baudrate of 38400 makes the PIC-Device understand something(I made a LED flash each time the PIC recieves a High-Low and Low-High-change) but I cannot decode it as I don't understand it. It is no real rs-232-code.

You can help me by sharing pseudo-code for my Palm Programme and PBP-Code for the receiving part.

[Ted's]

I address this to all readers:

There is no need for high bandwidth.

There is a need for emulating the 38khz carrier frequency using IrDA as IrDA is the only way to access the IR Port.

What I found is that using a baudrate of 38400 makes the PIC-Device understand something(I made a LED flash each time the PIC recieves a High-Low and Low-High-change) but I cannot decode it as I don't understand it. It is no real rs-232-code.

You can help me by sharing pseudo-code for my Palm Programme and PBP-Code for the receiving part.

[Ted's]

To the other users: Note that there are some closed source Palm remote control emulators being proof for doability.

There is still a want for a solution.

[Darrel Taylor]

Sorry, there must have been an error of some kind.

Many posts of the same message appeared.

Also edited the last message, since it no longer applied.

[ardhuru]

Thanks, Darrel.

I have no idea why my message got posted repeatedly.

I'm sorry for the inconvenience caused.

Regards,

Anand