Make a block parameter tunable
void ssSetSFcnParamTunable(SimStruct *S, int_T param, int_T isTunable)
SSimStruct representing an S-Function block.
paramIndex of the parameter.
isTunableValid values are SS_PRM_TUNABLE
(true / tunable),
SS_PRM_NOT_TUNABLE (false /
not tunable), or SS_PRM_SIM_ONLY_TUNABLE (tunable
only during simulation).
Use this macro in mdlInitializeSizes to specify whether a user
can change a dialog parameter during the simulation. The parameter index starts at 0
and is less than ssGetSFcnParamsCount(S). This improves
efficiency and provides error handling in the event that an attempt is made to
change the parameter.
If you specify the SS_PRM_TUNABLE option, you must create a
corresponding run-time parameter (see Creating Run-Time Parameters). You do not
have to create a corresponding run-time parameter if you specify the
SS_PRM_SIM_ONLY_TUNABLE option.
Note
Dialog parameters are tunable by default. However, an S-function should
declare the tunability of all parameters, whether tunable or not, to avoid
programming errors. If the user enables the simulation diagnostic
S-function upgrade needed, the Simulink® engine issues the diagnostic whenever it encounters an S-function
that fails to specify the tunability of all its parameters.
C, C++
See the following S-functions for examples that use this function:
sfun_atol.c used in sfcndemo_sfun_atol
stvctf.c used in sfcndemo_stvctf
stvdtf.c used in sfcndemo_stvdtf