Cables to Go 39554 User's Guide download pdf (Page 28)

Release Notes for StellarisWare Revision 8028 (September 9, 2011)

2.4.2 Windows data logging application added (Reference 13826)

A new application, “logger”, has been added to the StellarisWare/tools directory. This is a PC front

end for the “qs-logger” data logging application included in the ek-lm4f232 StellarisWare release. If

the ek-lm4f232 is connected to a PC via the USB OTG connector and the qs-logger storage option

is set to “Host PC”, then this application can be used to view captured data samples and log them

to a ﬁle.

2.4.3 mkstringtable updated to handle UTF8 strings (Reference 13857)

The mkstringtable tool has been updated to allow the use of source strings encoded using UTF8

and other non-ASCII codepages. This allows string tables to be built which include accented char-

acters and non-Latin alphabets. The previous version of the tool assumed that all source strings

were encoded using 7-bit ASCII only. To enable encoding of non-ASCII strings, use the “-u” com-

mand line option when running the tool.

2.5 New Features in Stellaris USB Library

2.5.1 Add support for forcing USB mode from an application (Reference

13820)

The USB library previously fully controlled the operating mode of the USB controller based

only on which Init function was called. This limited the application’s ﬂexibility when setting the

operating mode of the USB controller and possibly freeing up the USB0VBUS and USB0ID

pins. The application can now call the USBStackModeSet() API with any of the follow-

ing parameters: USB_MODE_DEVICE, USB_MODE_FORCE_DEVICE, USB_MODE_HOST,

USB_MODE_FORCE_HOST and USB_MODE_OTG. The USB_MODE_DEVICE,

USB_MODE_HOST and USB_MODE_OTG settings will all require the use of the USB0VBUS

and USB0ID pins and allow the USB controller to handle changes in VBUS. The

USB_MODE_FORCE_DEVICE and USB_MODE_FORCE_HOST settings will free up the

USB0VBUS and USB0ID pins, however the forced modes will give up the USB libraries ability to

detect changes in VBUS. In device mode, this will prevent the USB library from detecting when the

device has been disconnected. In host mode, the forced setting will prevent the USB library from

detecting a VBUS error condition.

2.5.2 Libraries renamed in adding support for Cortex M4F (Reference

13852)

This release adds support for the ek-lm4f232 kit and our new Cortex M4F-based parts. With the

addition of the new core and, speciﬁcally, its hardware ﬂoating point unit, we have had to split our

libraries into two versions, one for the Cortex M3 and another for the Cortex M4F. To prevent the

possibility of confusion, libraries are now renamed with a“-cm3” or “-cm4f” sufﬁx indicating the core

they were built for. Similarly, project ﬁles and makeﬁles are set up to use these sufﬁxes in the

output directory names into which objects and libraries are written. For example, if using the Keil

toolchain, whereas build products would previously be written into a “rvmdk” subdirectory, they will

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Cables to Go 39554 User's Guide Page 28