Write a 16-bit value to a port
#include <hw/inout.h> void out16( uintptr_t port, uint16_t val ); #define outbe16( port, val ) ... #define outle16( port, val ) ...
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The out16() function writes the native-endian 16-bit value, specified by val, to the specified port.
The outbe16() and outle16() macros write the native-endian 16-bit value, specified by val, to the specified port in big-endian or little-endian format, respectively.
The calling process must use mmap_device_io() to access the device's I/O registers.
On x86 targets, the calling thread must have I/O privileges, or else it will fault with a SIGSEGV; see the ThreadCtl() _NTO_TCTL_IO command for details.
Both outbe16() and outle16() are implemented as macros.
in8(), in8s(), in16(), in16s(), in32(), in32s(), mmap_device_io(), out8(), out8s(), out16s(), out32(), out32s()