SYNOPSIS
#include <hal.h>
rtapi_bool hal_get_bool(hal_bool_t refp);
rtapi_real hal_get_real(hal_real_t refp);
rtapi_sint hal_get_sint(hal_sint_t refp);
rtapi_uint hal_get_uint(hal_uint_t refp);
rtapi_s32 hal_get_si32(hal_sint_t refp);
rtapi_u32 hal_get_ui32(hal_uint_t refp);
rtapi_s32 hal_get_si32_clamped(hal_sint_t refp);
rtapi_u32 hal_get_ui32_clamped(hal_uint_t refp);ARGUMENTS
- refp
-
Pin, param or signal data reference.
DESCRIPTION
The hal_get_*() family of functions will get the value of a pin, param or signal from its data reference.
Reading 32-bit values normally truncates the value from the underlying storage.
The hal_get_si32_clamped() and hal_get_ui32_clamped() functions will clamp the read value based on type.
The ranges are RTAPI_INT32_MIN…RTAPI_INT32_MAX for signed and 0…RTAPI_UINT32_MAX for unsigned values.
SEE ALSO
hal_setter(3), hal_type_t(3), hal_pin_new(3), hal_param_new(3)