Belkin 2.0 RELEASE NOTES Bedienungsanleitung PDF herunterladen (Seite 31)

The same interrupt APIs and methodology are also available for the following

operating environments:

 Bare-metal (no operating system). Support for this configuration is shipped

with CrossCore Embedded Studio

 Real time operating system. Support for this configuration is shipped in the

real time kernel add-in available for CrossCore Embedded Studio.

This interrupt management mechanism is not only available for use within

applications, but it is also the mechanism used by CrossCore Embedded Studio’s

system services and device drivers.

For further information go to Help->Help Contents->CrossCore Embedded Studio

1.0.0-

>System Runtime Documentation->Interrupt Support.

Compiler Language Standards Support

Embedded C Support

The Blackfin compiler in CrossCore Embedded Studio 1.0.0 provides support for

the native fixed-point types fract and accum, defined in Chapter 4 of the

“Extensions to support embedded processors” ISO/IEC draft technical report TR

18037. These native fixed-point types allow you to write your applications in a more

natural manner, without sacrificing performance.

For instance, the following function is an example of a dot product implemented

using fract and accum, with natural fractional, saturating multiplication, addition, and

assignment operators instead of built-in functions.

#include <stdfix.h>

accum dot_product(fract *a, fract *b, int n)

{

accum sum = 0.0k;

int i;

for (i = 0; i < n; i++)

sum += a[i] * b[i];

return sum;

}

For more information go to Help->Help Contents->CrossCore Embedded Studio

1.0.0->C/C++ Compiler and Library Manual for Blackfin Processors, Chapter 1

“Using Native Fixed-Point Types”.

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 39 40

Keine Kommentare

Belkin 2.0 RELEASE NOTES Bedienungsanleitung Seite 31