| rtapi_init − Sets up RTAPI | 
| int rtapi_init(char *modname) | 
| modname | 
| The name of this rtapi module | 
| rtapi_init sets up the RTAPI. It must be called by any module that intends to use the API, before any other RTAPI calls. modname can optionally point to a string that identifies the module. The string will be truncated at RTAPI_NAME_LEN characters. If modname is NULL, the system will assign a name. | 
| Call only from within user or init/cleanup code, not from relatime tasks. | 
| On success, returns a positive integer module ID, which is used for subsequent calls to rtapi_xxx_new, rtapi_xxx_delete, and rtapi_exit. On failure, returns an RTAPI error code. |