Matlab S-function segmentation violation

2 次查看（过去 30 天）
ander
ander 2015-3-27
回答： ander 2015-3-30
Hi everybody! I am running a simulation and matlab gives me this error after 30 minutes:
For me it is very rare because I am not using any input at the S-function. I only use outputs so I dont understand what is happening. I am attaching the function where i initialized everything.
static void mdlInitializeSizes(SimStruct *S)
{
// hay 1 parametro que se introduce por simulink
ssSetNumSFcnParams(S, 1);
// si no estan los parametros esperados salta el error
if (ssGetNumSFcnParams(S) != ssGetSFcnParamsCount(S))
{
return;
}
//Se asignan las entradas de matlab a las variables
periodo = 1*(double) mxGetPr (ssGetSFcnParam(S,0))[0]; /* parameter[1]: Sampling period */
/* OUTPUTS */
//especifica las SALIDAS
if (!ssSetNumOutputPorts(S, max_vars)) return;
//Se especifica el ancho y tipo de las variables que en este caso todas son de 1 para simplificar
for (i=0;i<max_vars;i++)
{
ssSetOutputPortWidth(S, i, 1);
ssSetOutputPortDataType( S, i, SS_BOOLEAN );
}
ssSetNumSampleTimes(S, 1);
ssSetOptions(S, 0);
//VARDB
//se conecta a la vardb
bool opened = do1_vardb.ConnectVarDB("DO1");
//se comprueba que se ha conectado a la vardb que se quiera
const char *name = do1_vardb.GetVarDBName();
//se conectan todas las variables
for(i = 1; i < 10; ++i){
sprintf(buffer, "%s%d","DO_VALUE_CHN_0", i);
CVarDBAccess *varaccess = do1_vardb.ConnectVar(buffer, Boolean1, 1);
accesses.push_back(varaccess);
}
for(i = 10; i <= max_vars; ++i){
sprintf(buffer, "%s%d","DO_VALUE_CHN_", i);
CVarDBAccess *varaccess = do1_vardb.ConnectVar(buffer, Boolean1, 1);
accesses.push_back(varaccess);
}
}

请先登录，再回答此问题。

回答（2 个）

Anusha B
Anusha B 2015-3-30
Hi Ander,
You can debug your S-function either in Simulink or using a third-party software. The following link can help you in this regard:
http://www.mathworks.com/help/simulink/debug-s-functions.html
ander
ander 2015-3-30
I know that. But the problem is that the simulation runs more or less 30 minutes and suddenly goes to crash. I don´t know how to solve the problem because is not something that happens at the beginning of the simulation. The crash happens after 30 minutes.

类别

在 Help Center 和 File Exchange 中查找有关 Prepare Model Inputs and Outputs 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by