error: cannot call member function 'float LPS::readPressureMillibars()' without object float pressure = LPS::readPressureMillibars();

Question

Alberto Prud'homme 2016-4-22

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/280481-error-cannot-call-member-function-float-lps-readpressuremillibars-without-object-float-pre

Hello everyone;

I'm making a S-function block, with the code from Arduino.

I tested the code from Arduino and it works fine, but when I made the S-function builder I receive this error:

Ons/TOOLBO~1/EMBEDD~1/code/ENERGI~1/@SLCUS~1/../SCHEDU~1/include -IC:/Users/Alberto/DOCUME~1/MATLAB/Add-Ons/TOOLBO~1/EMBEDD~1/code/COMMON~1/include -o "Prueba_wrapper.o" "../Prueba_wrapper.cpp"
../Prueba_wrapper.cpp: In function 'void Prueba_Outputs_wrapper(real_T*, const real_T*)': 
../Prueba_wrapper.cpp:42:47: error: cannot call member function 'float LPS::readPressureMillibars()' without object 
   float pressure = LPS::readPressureMillibars(); 
                                               ^ 
../Prueba_wrapper.cpp:44:45: error: cannot call member function 'float LPS::readTemperatureC()' without object 
   float temperature = LPS::readTemperatureC(); 
                                             ^ 
../Prueba_wrapper.cpp: In function 'void Prueba_Update_wrapper(real_T*, real_T*)': 
../Prueba_wrapper.cpp:70:6: error: 'ps' was not declared in this scope 
 if (!ps.init()) 
      ^ 
../Prueba_wrapper.cpp:75:1: error: 'ps' was not declared in this scope 
 ps.enableDefault();    
 ^ 
gmake: *** [Prueba_wrapper.o] Error 1
### Creating HTML report file untitled_codegen_rpt.html
### Build procedure for model: 'untitled' aborted due to an error.

This is the Prueba_wrapper.cpp file generated by the builder:

/*
 * Include Files
 *
 */
#if defined(MATLAB_MEX_FILE)
#include "tmwtypes.h"
#include "simstruc_types.h"
#else
#include "rtwtypes.h"
#endif
/* %%%-SFUNWIZ_wrapper_includes_Changes_BEGIN --- EDIT HERE TO _END */
# ifndef MATLAB_MEX_FILE
# include <Arduino.h>
# include <math.h>
# include <Wire.h>
# include <LPS.h>
# include <LPS.cpp>
# endif
/* %%%-SFUNWIZ_wrapper_includes_Changes_END --- EDIT HERE TO _BEGIN */
#define y_width 1
/*
 * Create external references here.  
 *
 */
/* %%%-SFUNWIZ_wrapper_externs_Changes_BEGIN --- EDIT HERE TO _END */
/* extern double func(double a); */
/* %%%-SFUNWIZ_wrapper_externs_Changes_END --- EDIT HERE TO _BEGIN */
/*
 * Output functions
 *
 */
extern "C" void Prueba_Outputs_wrapper(real_T *y0,
      const real_T *xD)
{
/* %%%-SFUNWIZ_wrapper_Outputs_Changes_BEGIN --- EDIT HERE TO _END */
if (xD[0] == 1){
# ifndef MATLAB_MEX_FILE
  float pressure = LPS::readPressureMillibars();
  float altitude = LPS::pressureToAltitudeMeters(pressure);
  float temperature = LPS::readTemperatureC();
  Serial.print("p: ");
  Serial.print(pressure);
  Serial.print(" mbar\ta: ");
  Serial.print(altitude);
  Serial.print(" m\tt: ");
  Serial.print(temperature);
  Serial.println(" deg C");    
# endif   
}
/* %%%-SFUNWIZ_wrapper_Outputs_Changes_END --- EDIT HERE TO _BEGIN */
}
/*
  * Updates function
  *
  */
extern "C" void Prueba_Update_wrapper(real_T *y0,
      real_T *xD)
{
  /* %%%-SFUNWIZ_wrapper_Update_Changes_BEGIN --- EDIT HERE TO _END */
if (xD[0] != 1){
# ifndef MATLAB_MEX_FILE
Serial.begin(9600);
Wire.begin();
if (!ps.init())
{
Serial.println("Failed to autodetect pressure sensor!");
while (1);
}
ps.enableDefault();   
# endif
xD[0] = 1;
}
/* %%%-SFUNWIZ_wrapper_Update_Changes_END --- EDIT HERE TO _BEGIN */
}