Warning: main(/www/www/htdocs/style/globals.php) [function.main]: failed to open stream: No such file or directory in /www/www/docs/6.4.1/neutrino/lib_ref/i/in32.html on line 1

Warning: main() [function.include]: Failed opening '/www/www/htdocs/style/globals.php' for inclusion (include_path='.:/www/www/common:/www/www/php/lib/php') in /www/www/docs/6.4.1/neutrino/lib_ref/i/in32.html on line 1

Warning: main(/www/www/htdocs/style/header.php) [function.main]: failed to open stream: No such file or directory in /www/www/docs/6.4.1/neutrino/lib_ref/i/in32.html on line 8

Warning: main() [function.include]: Failed opening '/www/www/htdocs/style/header.php' for inclusion (include_path='.:/www/www/common:/www/www/php/lib/php') in /www/www/docs/6.4.1/neutrino/lib_ref/i/in32.html on line 8

in32(), inbe32(), inle32()

Read a 32-bit value from a port

Synopsis:

#include <hw/inout.h>

uint32_t in32( uintptr_t port );

#define inbe32 ( port ) ...

#define inle32 ( port ) ...

Arguments:

port
The port you want to read the value from.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The in32() function reads a 32-bit value from the specified port.

The inbe32() and inle32() macros read a 32-bit value that's in big-endian or little-endian format, respectively, from the specified port, and returns the value as native-endian.

Returns:

A 32-bit value in native-endian.

Classification:

QNX Neutrino

Safety:
Cancellation point No
Interrupt handler Yes
Signal handler Yes
Thread Yes

Caveats:

The calling thread must have I/O privileges; see ThreadCtl()'s _NTO_TCTL_IO command for details.

The calling process must also use mmap_device_io() to access the device's I/O registers.

Both inbe32() and inle32() are implemented as macros.

See also:

in8(), in8s(), in16(), in16s(), in32s(), mmap_device_io(), out8(), out8s(), out16(), out16s(), out32(), out32s()


Warning: main(/www/www/htdocs/style/footer.php) [function.main]: failed to open stream: No such file or directory in /www/www/docs/6.4.1/neutrino/lib_ref/i/in32.html on line 142

Warning: main() [function.include]: Failed opening '/www/www/htdocs/style/footer.php' for inclusion (include_path='.:/www/www/common:/www/www/php/lib/php') in /www/www/docs/6.4.1/neutrino/lib_ref/i/in32.html on line 142