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hal_set_constructor − Set the constructor function for this component |
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typedef int (*hal_constructor_t)(const char *prefix, const char *arg); int hal_set_constructor(int comp_id, hal_constructor_t constructor) |
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comp_id A HAL component identifier returned by an earlier call to hal_init. |
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prefix The prefix to be given to the pins, parameters, and functions in the new instance |
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arg An argument that may be used by the component to customize this istance. |
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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. |
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Returns a HAL status code. |
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halcmd(1) |