IR200L TV 리모콘과 PC 사용 사례

IR200L을 이용하여 PC와 적외선 리모컨과의 통신을 하고자하는 고객에 대한 사례입니다. 그러나 컴포트가 잡혀있어서 IR200L을 사용할 수 없습니다. 해결 방법과 통신을 위한 기술적 조언를 바랍니다.

[답변]

1) I have checked your question. You installed windows IrDA stack driver and that driver was load on one of COM port. say COMx. So, that COMx is already occupied and hence your application software CFterm say "COM already OPEN".

2) Please, uninstall windows IrDA stack driver of IR200L. You no need it for remote control application. Windows IrDA stack driver is for IrDA communication not for Remote control IR (which is CIR-consumer IR different than IrDA).
Refer FAQ 2 at the end for more detail.

3) For remote control application, You can access direct COM port where you have connected IR200L (either directly to RS232 COM port OR via USB to serial converter).
You have to write your own simple RS232 driver. I am attaching herewith IR200L programming guide for reference to build your driver.
OR you can use below third party freeware which do remote control application for IR200L.
ACTiSYS is expert in IrDA but we do not have much knowledge on CIR as ACTiSYS did not much involve, so you can use what other people has successfully used. Take its reference and built your own.

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FAQ 1: I need IR receiver to receive signal from External remote. Can I use your IR200L?

TV/DVD Remote supports consumer IR (CIR) protocol which is the use of infrared to control consumer products (like TV, DVD player, etc.) using popular NEC IR or similar kind of ASK based protocol. Infect, this usage has no direct link with IrDA as the protocol used by remote controls are quite unlike the protocol used by the IrDA protocol suite except both uses infrared technology.

So, based on your requirement, you may be looking for IR Blaster solution. An IR Blaster is a device, which, after learned, can emit or blast an IR signal much like your remote control. This device is connected to PC serial port and is aimed at your opposite device like TV, set top box, est.’s, your need is of that kind of device.

We have similar kind of device called ACT-IR200L (Multi-standard, IrDA & ASK based) but this device limited by what IR signals it can correctly recognize from opposite remote and correctly emit which opposite remote can recognize. So you can buy one and test with your application using free third party software available on net.

To get the USB interface support, you can additionally use ACT1-201 product in combination to get USB virtual COM port support.

Here are some URLs that might help.

1) IRCommand2 hardware support list shows ACT-IR200L :http://www.wdpsoftware.com/IRC2/hardware.htm

WDPS : http://www.wdpsoftware.com/
Download software & document : http://www.wdpsoftware.com/IRC2/download.htm
Our end customer provided valuable feedback about above. For some technical help, he may help you ===> cpare@miranda.com

2) ACT-IR200L uses CS8130 chip inside. The datasheet of that chip can be found at: http://www.cirrus.com/en/pubs/proDatasheet/CS8130_F1.pdf .

3) This IR Transceiver document is helpful: http://www.vishay.com/docs/80071/dataform.pdf.

4) Snap Stream used IR200L in the past for remote control but stopped doing so sometime ago.
See: http://snapstream.helpserve.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=1296 .

5) Open source codes for IR200L learning SW: http://www.lirc.org/, http://winlirc.sourceforge.net/.
Distance support maximum 1.5meter, recommended 1meter.

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FAQ 2: I can not find the COM port to which my ACT-IR200L is connected to:

1) First, If your opposite device is not IrDA but only RAW-IR OR CIR supported then you no longer need to install Windows IrDA stack driver for ACT-IR200L. It is so because once you install IrDA stack driver for let's say COM1 then your COM1 is occupied by this driver and now if your application directly look for that COM1 like serial device then you will always get message that " COM1 could not find/recognized". Refer Note for additional detail.
If above case, then uninstall IrDA stack driver for IR200L and then Give COM1 selection to your application directly and test.

Note:

i) IR200L used for True IrDA mode (used Built in Windows IrDA stack driver)
If your opposite IrDA device support full IrDA implementation (IrPHY+IrLAP+IrLMP+IAS+ upper IrDA application protocol IrCOMM/IrOBEX) then only, you must used IR200L with windows Built in IrDA stack driver for this serial product. Windows IrDA Stack driver needed as IR200L is only provide IrPHY (IrDA physical layer to convert IR to Serial and vice versa, like Serial cable replacement).

ii) IR200L used for RAW-IR/CIR mode (do not use built in Windows IrDA stack driver):
If user wants just simple serial cable replacement by IR then he can use IR200Lwithout windows IrDA stack driver. Mean that User will use only IrDA physical layer support of IR200L device.