Nios II Software Developer’s Handbook
May 2011
NII52010-11.0.0
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14. HAL API Reference
This chapter provides an alphabetically ordered list of all the functions in the
hardware abstraction layer (HAL) application program interface (API). Each function
is listed with its C prototype and a short description. Each listing provides
information about whether the function is thread-safe when running in a
multi-threaded environment, and whether it can be called from an interrupt service
routine (ISR).
This chapter only lists the functionality provided by the HAL. The complete newlib
API is also available from within HAL systems. For example, newlib provides
printf()
, and other standard I/O functions, which are not described here.
1 Each function description lists the C header file that your code must include to access
the function. Because header files include other header files, the function prototype
might not be defined in the listed header file. However, you must include the listed
header file in order to include all definitions on which the function depends.
f For more details about the newlib API, refer to the newlib documentation. On the
Windows Start menu, click Programs > Altera > Nios II <version> > Nios II <version>
Documentation.
This chapter contains the following sections:
■ “HAL API Functions” on page 14–1
■ “HAL Standard Types” on page 14–79
HAL API Functions
The HAL API functions are shown on the following pages.
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