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Release Notes for StellarisWare Revision 6288 (August 3, 2010)

9.3 New Features in Stellaris Graphics Library

9.3.1 Improve NumLeadingZeros macro in graphics library (for CCS) (Ref-

erence 12219)

The graphics library string module has a macro named NumLeadingZeros. The implementation of

the macro was improved for the CCS toolchain. There is no change for other toolchains.

9.4 Bug Fixes in Stellaris USB Library

9.4.1 Memory allocation issue with USB FIFO conﬁguration data (Refer-

ence 12266)

The default size of the memory allocated to the USB FIFO conﬁguration memory could only hold

information on three IN or three OUT endpoints. If more than three of either type of endpoint

was used, the USB library would overﬂow this memory allocation and begin reading and writing to

memory beyond the space allocated to the USB FIFO conﬁguration. This under allocation causes

issues with any USB device that uses more than three IN or three OUT endpoints and is most likely

to occur when creating a custom composite device where the total number of IN or OUT endpoints

is greater than three. To ﬁx this, the default allocation was increased to 16 entries which is the

maximum number of endpoints on any USB controller.

9.5 New Features in Stellaris Utility Library

9.5.1 Added Software SSI module (Reference 12269)

Added a software SSI module (SoftSSI) that allows an arbitrary set of GPIO pins to be used as a

SPI master. Supports SPI modes 0-3, 4-16 data bits, application-conﬁgurable GPIO usage, and

application-conﬁgurable FIFO size.

9.5.2 Added Software I2C module (Reference 12360)

Added a software I2C module (SoftI2C) that allows an arbitrary pair of GPIO pins to be used as an

I2C master. Supports I2C master transmit and receive, and application-conﬁgurable GPIO usage.

9.5.3 Added cosine macro (Reference 12248)

Added a cosine macro to sine.h that simply calls the sine function with the angle incremented by

90 degrees.

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Cables to Go 39554 Betriebsanweisung Seite 82