SYNTAX
typedef int (hal_constructor_t)(const char prefix, const char* arg); int hal_set_constructor(int comp_id, hal_constructor_t constructor)
ARGUMENTS
- comp_id
-
A HAL component identifier returned by an earlier call to hal_init.
- prefix
-
The prefix to be given to the pins, parameters, and functions in the new instance.
- arg
-
An argument that may be used by the component to customize this instance.
DESCRIPTION
As an experimental feature in HAL 2.1, components may be constructable. Such a component may create pins and parameters not only at the time the module is loaded, but it may create additional pins and parameters, and functions on demand.
RETURN VALUE
Returns a HAL status code.
SEE ALSO
halcmd(1)