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

now be found in either “rvmdk-cm3” or “rvmdk-cm4f” depending upon the core for which the build

was targeted. Separate project and make ﬁles are provided for each target core.

Note that this change will require modiﬁcation in existing application project and make ﬁles to link the

correct version of the library from its new directory. This change has been made for all StellarisWare

board examples.

2.6 Bug Fixes in Stellaris USB Library

2.6.1 USB Device classes fail USB certiﬁcation Chapter 9 test (Reference

13720)

The USB library was not properly stalling all unsupported chapter 9 requests. This was causing

some device classes to fail the USB certiﬁcation tests for BOS Chapter 9 test. Any device classes

that do not have a GetDescriptor handler were affected by this issue.

2.6.2 USB Device Library was not properly handling FIFO conﬁguration

(Reference 13768)

The USB library was not properly handling USB FIFO and DMA conﬁguration in all cases. The most

common failure was a device that had multiple interfaces with different FIFO conﬁgurations for each

interface. In this case, the USB library would only use the initial interface’s FIFO conﬁguration. This

caused USB device classes that had a different FIFO conﬁguration based on the interface in use to

not properly conﬁgure endpoints.

2.6.3 USB Host Audio class improperly conﬁgured DMA (Reference

13841)

The USB library host audio class was not properly selecting DMA for its data endpoints. This was

causing the USB library to not properly conﬁgure the USB controller to use DMA in all cases when

conﬁguring endpoints for the USB host audio device class.

2.6.4 USBHCDPowerConﬁgSet() was not correctly setting power fault ac-

tion (Reference 13664)

The function USBHCDPowerConﬁgSet() was not setting the automatic power fault action correctly

when the USBHCD_FAULT_VBUS_DIS setting was speciﬁed in the ulConﬁg parameter. This re-

sulted in no automatic power fault action when an external device indicated a power fault condition

on the USB0PFLT pin. When the USBHCD_FAULT_VBUS_DIS feature is requested, the USB-

HCDPowerConﬁgSet() now correctly enables automatically deactivating the power pin USB0EPEN

when the speciﬁed level (USBHCD_FAULT_LOW or USBHCD_FAULT_HIGH) is present on the

USB0PFLT pin.

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