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Signals timing in IR remote control and cell phones

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seadolphine2000

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Hi,..

I'm trying to interface my cell phone to an MCU via InfraRed transceiver. I need to know if there's a difference between the signals timing used in remote control and those used in cell phones.
I mean by signals timing, the pulse durations and their formats.

Thanks very much guys for all your help.
 

InfraRed with MCU

i do not think that there is a difference
it depends on the cell phone?

what is the type of your cell phone?
:p
 

InfraRed with MCU

Hi
as I know cell phone uses RS232 as interface protocol.
regards
 


Re: InfraRed with MCU

First of all, Thanks very much to all of you.

xxtigerxx,..
what is the type of your cell phone?
Click to expand...

My phone is Z530i Sony-Ericson. But, do different cell phone brands use different protocols.? Aren't they standardized.?

budhy,..
remote control use propiertary standard, there are many kind of infra red remote control signal standard. (ie Philips RC5 protocol; Panasonic RECS-80 protocol; Sony Control-S (SIRCS) protocol)
Click to expand...

That's why I opened this topic. I got these different protocols but I don't know if any of them is used in InfraRed cell phone communications, or there's another protocol.

Thanks again or your time and help.
 

Re: InfraRed with MCU

My phone is Z530i Sony-Ericson. But, do different cell phone brands use different protocols.? Aren't they standardized.?
Click to expand...
Yes, they use IrDA as standard protocol.
 

InfraRed with MCU

budhy,..

What are these protocols?
What are the signals used to establish the connection.?

Thanks again to all of you.
 

Re: InfraRed with MCU

Remote control IR protocol just a simple command mode protocol, but IrDA protocol is data mode protocol, can be use as IR network.

Please take a look at epanorama IR remote control pages

Would you like irDA protocol information?
 
Re: InfraRed with MCU

Budhy,..
Would you like irDA protocol information?
Click to expand...

Yes, this is what I'm asking for.

In addition, I found this diagram in a Microchip application note(both attached). I'm wondering:
What is the part number for the "Host controller"?
Is there any equivalent for the MCP2140 or MCP215x?

Thanks again for all your help.
 

InfraRed with MCU

Hi
I'm not sure
but I think that host controller can be microcontroller.
MCP215x just convert pulse width to 1/4.
(because of low power consumption)
regards
 

Re: InfraRed with MCU

hr_rezaee,..
Hi
I'm not sure
but I think that host controller can be microcontroller.
MCP215x just convert pulse width to 1/4.
Click to expand...

Do you mean that I can remove the MCP2140/MCP215x if power is not concerend?
What about the protocol handling? Who is responsible for initiating these protocols.?

Thanks again for your time.
 

InfraRed with MCU

I think IrDA is just RS-232 modulated over some high frequency carrier. I dont think you can remove the protocol handler since that is also doing the modulation and demodulation,.
 

Re: InfraRed with MCU

techie said:
I think IrDA is just RS-232 modulated over some high frequency carrier. I dont think you can remove the protocol handler since that is also doing the modulation and demodulation,.
Click to expand...
You are only talking about Physical layer....but other layers are also needed in order to make your uC talk to other IrDA devices.
Look here
**broken link removed**
 
Re: InfraRed with MCU

seadolphine2000 said:
Do you mean that I can remove the MCP2140/MCP215x if power is not concerend?
Click to expand...
Hi
it depends on your case
in old systems you must use conventional rs232 pulses but in new systems
you must use new scheme.
seadolphine2000 said:
What about the protocol handling? Who is responsible for initiating these protocols.?
Click to expand...
I don't know about this.
regards
 

Re: InfraRed with MCU

also tell me abt it, if u come to know
 

Re: InfraRed with MCU

The "host controller" is any device that has a serial port. This can be a microcontroller or a PC.
 

InfraRed with MCU

Guys,...
Thanks very much for your time and concern.

I know that the "host controller" can be a microcontroller. My problem is the "Protocol Handler".
I'm asking if the MCP215x/MCP2140 can be replaced by any other chip or not.?

Thanks again for your help.
 

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