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Full Discussion: Is there a floatN_t type ?
Top Forums Programming Is there a floatN_t type ? Post 302323419 by reborg on Sunday 7th of June 2009 04:12:34 PM
Old 06-07-2009
If I understood this correctly you are getting messages from an embedded device presumable in some kind of encoded struct but you are not actually coding on/for the embedded device.

If you are post-processing this on an "normal" PC you should just be decoding the messages and using the decoded content to do your processing. For example if you have an 8 bit float of some kind coming out from the device you would convert that and use a standard 32 bit float on your pc and ignore the fact that the data type is much bigger than you actually need.

Likewise is you need to send the information back to the device, you would need to reencode the message into a sequence of bytes and send that.

Adapting/converting the messages rather than reimplmenting the basic functionality will give you much better mileage.
 

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LEARN ABOUT DEBIAN

usb_mid

usb_mid(7D)							      Devices							       usb_mid(7D)

NAME

       usb_mid - USB Multi Interface Driver

SYNOPSIS

       device@unit-address

DESCRIPTION

       The  usb_mid driver is a USBA (Solaris Universal Serial Bus Architecture) compliant nexus driver that binds to device level nodes of a com-
       posite (multi interface) device if no vendor or class specific driver is available. The usb_mid driver attempts to bind drivers to each	of
       the composite device's interfaces.

FILES

       /kernel/drv/usb_mid	       32-bit x86 ELF kernel module

       /kernel/drv/amd64/usb_mid       64-bit x86 ELF kernel module

       /kernel/drv/sparcv9/usb_mid     64-bit SPARC ELF kernel module

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+------------------------------+
       |      ATTRIBUTE TYPE	     |	     ATTRIBUTE VALUE	    |
       +-----------------------------+------------------------------+
       |Architecture		     |SPARC, x86, PCI-based systems |
       +-----------------------------+------------------------------+
       |Availability		     |SUNWusb			    |
       +-----------------------------+------------------------------+

SEE ALSO

       cfgadm_usb(1M), attributes(5), usba(7D)

       Writing Device Drivers

       Universal Serial Bus Specification 1.0 and 1.1

       System Administration Guide: Basic Administration

       http://www.sun.com/io

DIAGNOSTICS

       In addition to being logged, the following messages may appear on the system console. All messages are formatted in the following manner:

       Warning: <device path> (usb_mid<instance number>): Error Message...

       Cannot access <device>. Please reconnect.

	   This  device  has been disconnected because a device other than the original one has been inserted. The driver informs you of this fact
	   by displaying the name of the original device.

       Device not identical to the previous one on this port. Please disconnect and reconnect.

	   Same condition as described above; however in this case, the driver is unable to identify the original device with a name string.

       Please disconnect and reconnect this device.

	   A hotplug of the device is needed before it can be restored.

SunOS 5.10							    9 Oct 2004							       usb_mid(7D)
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