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Author Topic: USB 2 Serial  (Read 2931 times)
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snoopy
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« on: August 08, 2008, 01:49:51 13:49 »

I  need to implement USB to RS232 full converter to my board.
I have two options FT232RL and CP2102.

Which one do you suggest?
Why?

Br
Snoopy
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bogdantk
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« Reply #1 on: August 08, 2008, 03:48:02 15:48 »

Use the FTDI  - more reliable drivers for Win XP and VISTA
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falcon _bd
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« Reply #2 on: August 08, 2008, 07:47:46 19:47 »

I  need to implement USB to RS232 full converter to my board.
I have two options FT232RL and CP2102.

Which one do you suggest?
Why?

Br
Snoopy 
I also  need a usb to serial converter. but i dont know anything about this. please help me
 what is FT232RL and CP2102??
« Last Edit: August 08, 2008, 07:51:11 19:51 by falcon _bd » Logged

firewalker
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« Reply #3 on: August 08, 2008, 11:30:36 23:30 »

I would use FT232RL or PL2303 witch both are supported by the Linux kernel by default (I have used both of them in some applications).

http://www.ftdichip.com/Documents/DataSheets/DS_FT232R.pdf
http://user.chollian.net/~mines/pl2303.pdf
« Last Edit: August 08, 2008, 11:36:19 23:36 by firewalker » Logged
snoopy
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« Reply #4 on: August 12, 2008, 02:59:45 14:59 »

I also  need a usb to serial converter. but i dont know anything about this. please help me
 what is FT232RL and CP2102??

This are integrated circits whitch convert USB communications to RS232 communications ,all outputs are TTL level. If you need connections directly to PC you also need MAX 213 ( this is TTL to RS232 level converter. 

Snoopy

Posted on: August 12, 2008, 02:56:53 14:56 - Automerged

I have got qoutation for Silabs CP2103-GM 100 pieces for 2,38 EUR each without tax.
Is this price OK?

Snoopy
« Last Edit: August 12, 2008, 03:00:37 15:00 by snoopy » Logged
falcon _bd
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« Reply #5 on: August 16, 2008, 11:46:24 11:46 »

I am in big trouble because of my laptop. there is no serial port. so i cant connected my serial device.
help me step by step with circuit and program.
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snoopy
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« Reply #6 on: August 18, 2008, 03:12:38 15:12 »

Buy USB to serial converter ( every store with computer stuff must have it.) and your problem will desepire. Wink
But if you would like to make it , you need to know how to do PCB , you must have solder station to solder
components , etc......

It`s on you . ...

Snoopy
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falcon _bd
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« Reply #7 on: August 18, 2008, 09:55:01 21:55 »

Just help me with the circuit schematic with FT232RL. is there need any software or driver in the operating system?
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samir
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« Reply #8 on: August 19, 2008, 06:04:14 06:04 »

you can use pic18f4550 or similar microchip controller. It has free CDC stack so you can use it as UART to USB converter.
Second option is to use TI's TUSB3410
http://focus.ti.com/docs/prod/folders/print/tusb3410.html

« Last Edit: August 19, 2008, 06:06:18 06:06 by samir » Logged
snoopy
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« Reply #9 on: August 19, 2008, 10:00:15 10:00 »

Here you have all you need to design USB to RS232 with FT232RL, all is free.

http://www.ftdichip.com/Products/FT232R.htm


Snoopy
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madhan7710
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« Reply #10 on: August 19, 2008, 07:41:54 19:41 »

Here is a simple circuit which uses PL2303. Better than FTDI...
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mbandala
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« Reply #11 on: August 20, 2008, 04:18:58 16:18 »

Check the breakout schematics here

http://www.sparkfun.com/commerce/product_info.php?products_id=718
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