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USB and serial port

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Maurício

6 Aug 2008 6 Aug '08

9:11 p.m.

Hi, What are the alternatives to read a USB port (actually, a COM serial port with an USB adapter) in Haskell, running in Linux? Thanks, Maurício

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Magnus Therning

6 Aug 6 Aug

9:17 p.m.

Maurício wrote:

Hi,

What are the alternatives to read a USB port (actually, a COM serial port with an USB adapter) in Haskell, running in Linux?

Guessing wildly here... Either as a regular file, or a wrapper around some ioctl calls? /M -- Magnus Therning (OpenPGP: 0xAB4DFBA4) magnus＠therning．org Jabber: magnus＠therning．org http://therning.org/magnus Haskell is an even 'redder' pill than Lisp or Scheme. -- PaulPotts

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Henk-Jan van Tuyl

9:47 p.m.

On Wed, 06 Aug 2008 23:11:50 +0200, Maurício wrote:

Hi,

What are the alternatives to read a USB port (actually, a COM serial port with an USB adapter) in Haskell, running in Linux?

Have a look at: http://www8.garmin.com/support/commProtocol.html Maybe you can find somfing useful at sourceforce.net -- Met vriendelijke groet, Henk-Jan van Tuyl -- http://functor.bamikanarie.com http://Van.Tuyl.eu/ --

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Marc Weber

7 Aug 7 Aug

7:40 a.m.

On Wed, Aug 06, 2008 at 06:11:50PM -0300, Maurício wrote:

Hi,

What are the alternatives to read a USB port (actually, a COM serial port with an USB adapter) in Haskell, running in Linux?

Just be aware that the USB-serial converter can be polled only every ms. So if you have really time critical applications you may see some porblems. I've spend days no knowing why I wasn't able to program a avr microcontroller till trying a real serial device (without USB) and it suddenly worked.. So if someting does'nt work maybe try a real serial interface first :) Marc

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Maurício

12:02 p.m.

Marc Weber a écrit :

On Wed, Aug 06, 2008 at 06:11:50PM -0300, Maurício wrote:

...
Hi,

What are the alternatives to read a USB port (actually, a COM serial port with an USB adapter) in Haskell, running in Linux?

Just be aware that the USB-serial converter can be polled only every ms. So if you have really time critical applications you may see some porblems. I've spend days no knowing why I wasn't able to program a avr microcontroller till trying a real serial device (without USB) and it suddenly worked.. So if someting does'nt work maybe try a real serial interface first :)

Marc

I would, if my computer had one... :)

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Krzysztof Skrzętnicki

3:24 p.m.

I'm currently using partial wrapper around libusb[1] in my work. It doesn't provide full interface to the library itself, so I didn't have to translate C structures. Perhaps someone can make a regular wrapper - the libusb API is pretty small and concise. Regards, Christopher Skrzętnicki [1] http://libusb.wiki.sourceforge.net/ On Wed, Aug 6, 2008 at 23:11, Maurício wrote:

Hi,

What are the alternatives to read a USB port (actually, a COM serial port with an USB adapter) in Haskell, running in Linux?

Thanks, Maurício

_______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

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Maurício

8 Aug 8 Aug

12:54 p.m.

Interesting! The new version of the library really deserves a wrapper. Thanks, Maurício

I'm currently using partial wrapper around libusb[1] in my work. It doesn't provide full interface to the library itself, so I didn't have to translate C structures. Perhaps someone can make a regular wrapper - the libusb API is pretty small and concise.

Regards, Christopher Skrzętnicki

[1] http://libusb.wiki.sourceforge.net/

On Wed, Aug 6, 2008 at 23:11, Maurício wrote:

...
Hi,

What are the alternatives to read a USB port(...)

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Krzysztof Skrzętnicki

4:45 p.m.

Which version do you consider "new": the current 0.1.12 or the future 1.0 version? Regards, Christopher Skrzętnicki On Fri, Aug 8, 2008 at 14:54, Maurício wrote:

Interesting! The new version of the library really deserves a wrapper.

Thanks, Maurício

...
I'm currently using partial wrapper around libusb[1] in my work. It doesn't provide full interface to the library itself, so I didn't have to translate C structures. Perhaps someone can make a regular wrapper - the libusb API is pretty small and concise.

Regards, Christopher Skrzętnicki

[1] http://libusb.wiki.sourceforge.net/

On Wed, Aug 6, 2008 at 23:11, Maurício wrote:

...
Hi,

What are the alternatives to read a USB port(...)

_______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

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Maurício

5:47 p.m.

1.0. By the time one finishes a Haskell wrapper, 1.0 will be probably available, so I think it's better to start with that.

Which version do you consider "new": the current 0.1.12 or the future 1.0 version?

Regards, Christopher Skrzętnicki

On Fri, Aug 8, 2008 at 14:54, Maurício wrote:

...
Interesting! The new version of the library really deserves a wrapper.

Thanks, Maurício

...
I'm currently using partial wrapper around libusb[1] (...)

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participants (5)

Henk-Jan van Tuyl
Krzysztof Skrzętnicki
Magnus Therning
Marc Weber
Maurício