I am officially lost with S-Function builder

10 次查看（过去 30 天）
Renan Barbosa
Renan Barbosa 2018-8-5
回答： Madhu Govindarajan 2018-8-6
I was trying to make a simulink S-Function to connect Arduino and it Sensor Adafruit INA219 to simulink, I needed to add the library for the INA219. However it is been frustrating to understand how to do it using matlab. I tried many different sources to understand.
I would appreciate if someone could explain me step by step this procedure.
The wrapper, and the errors:
/*
* 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
#define ARDUINO 100
#include <math.h>
#include <Arduino.h>
#include <Wire.h>
#include <Adafruit_INA219.h>
#include <Adafruit_INA219.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 INA219_Outputs_wrapper(uint32_T *busvoltage,
uint32_T *shuntvoltage,
uint32_T *loadvoltage,
uint32_T *current_mA,
uint32_T *power_mW,
const real_T *xD)
{
/* %%%-SFUNWIZ_wrapper_Outputs_Changes_BEGIN --- EDIT HERE TO _END */
/* This sample sets the output equal to the input
y0[0] = u0[0];
For complex signals use: y0[0].re = u0[0].re;
y0[0].im = u0[0].im;
y1[0].re = u1[0].re;
y1[0].im = u1[0].im;
*/
#ifdef MATLAB_MEX_FILE
/*
float shuntvoltage = 0;
float busvoltage = 0;
float current_mA = 0;
float loadvoltage = 0;
float power_mW = 0;
*/
shuntvoltage = ina219.getShuntVoltage_mV();
busvoltage = ina219.getBusVoltage_V();
current_mA = ina219.getCurrent_mA();
power_mW = ina219.getPower_mW();
loadvoltage = busvoltage + (shuntvoltage / 1000);
#endif
/* %%%-SFUNWIZ_wrapper_Outputs_Changes_END --- EDIT HERE TO _BEGIN */
}
/*
* Updates function
*
*/
void INA219_Update_wrapper(uint32_T *busvoltage,
uint32_T *shuntvoltage,
uint32_T *loadvoltage,
uint32_T *current_mA,
uint32_T *power_mW,
real_T *xD)
{
/* %%%-SFUNWIZ_wrapper_Update_Changes_BEGIN --- EDIT HERE TO _END */
/*
* Code example
* xD[0] = u0[0];
*/
#ifdef MATLAB_MEX_FILE
Adafruit_INA219 ina219;
ina219.begin();
ina219.setCalibration_16V_400mA();
#endif
/* %%%-SFUNWIZ_wrapper_Update_Changes_END --- EDIT HERE TO _BEGIN */
}
S-function Builder 1 Clear
10:21 PM Elapsed: 0.42 sec
INA219_wrapper.c
D:\1 - Main\UWF\Office of Undergraduate Research (OUR)\SURP\SURP 2018\MATLAB\INA219\INA219_wrapper.c(65): error C2065: 'ina219': undeclared identifier
D:\1 - Main\UWF\Office of Undergraduate Research (OUR)\SURP\SURP 2018\MATLAB\INA219\INA219_wrapper.c(65): error C2224: left of '.getShuntVoltage_mV' must have struct/union type
D:\1 - Main\UWF\Office of Undergraduate Research (OUR)\SURP\SURP 2018\MATLAB\INA219\INA219_wrapper.c(66): error C2065: 'ina219': undeclared identifier
D:\1 - Main\UWF\Office of Undergraduate Research (OUR)\SURP\SURP 2018\MATLAB\INA219\INA219_wrapper.c(66): error C2224: left of '.getBusVoltage_V' must have struct/union type
D:\1 - Main\UWF\Office of Undergraduate Research (OUR)\SURP\SURP 2018\MATLAB\INA219\INA219_wrapper.c(67): error C2065: 'ina219': undeclared identifier
D:\1 - Main\UWF\Office of Undergraduate Research (OUR)\SURP\SURP 2018\MATLAB\INA219\INA219_wrapper.c(67): error C2224: left of '.getCurrent_mA' must have struct/union type
D:\1 - Main\UWF\Office of Undergraduate Research (OUR)\SURP\SURP 2018\MATLAB\INA219\INA219_wrapper.c(68): error C2065: 'ina219': undeclared identifier
D:\1 - Main\UWF\Office of Undergraduate Research (OUR)\SURP\SURP 2018\MATLAB\INA219\INA219_wrapper.c(68): error C2224: left of '.getPower_mW' must have struct/union type
D:\1 - Main\UWF\Office of Undergraduate Research (OUR)\SURP\SURP 2018\MATLAB\INA219\INA219_wrapper.c(69): error C2296: '/': illegal, left operand has type 'uint32_T *'
D:\1 - Main\UWF\Office of Undergraduate Research (OUR)\SURP\SURP 2018\MATLAB\INA219\INA219_wrapper.c(93): error C2065: 'Adafruit_INA219': undeclared identifier
D:\1 - Main\UWF\Office of Undergraduate Research (OUR)\SURP\SURP 2018\MATLAB\INA219\INA219_wrapper.c(93): error C2146: syntax error: missing ';' before identifier 'ina219'
D:\1 - Main\UWF\Office of Undergraduate Research (OUR)\SURP\SURP 2018\MATLAB\INA219\INA219_wrapper.c(93): error C2065: 'ina219': undeclared identifier
D:\1 - Main\UWF\Office of Undergraduate Research (OUR)\SURP\SURP 2018\MATLAB\INA219\INA219_wrapper.c(94): error C2065: 'ina219': undeclared identifier
D:\1 - Main\UWF\Office of Undergraduate Research (OUR)\SURP\SURP 2018\MATLAB\INA219\INA219_wrapper.c(94): error C2224: left of '.begin' must have struct/union type
D:\1 - Main\UWF\Office of Undergraduate Research (OUR)\SURP\SURP 2018\MATLAB\INA219\INA219_wrapper.c(95): error C2065: 'ina219': undeclared identifier
D:\1 - Main\UWF\Office of Undergraduate Research (OUR)\SURP\SURP 2018\MATLAB\INA219\INA219_wrapper.c(95): error C2224: left of '.setCalibration_16V_400mA' must have struct/union type
Component:S-function Builder | Category:Build error

请先登录，再回答此问题。

回答（1 个）

Madhu Govindarajan
The S-function builder approach is quite old and a little difficult, however if you are really set on using that here is a video that I found quite helpful - https://www.youtube.com/watch?v=_OLctOFjjYQ
The recommended approach by MathWorks for the same is to use the System Objects workflow. Here is a detailed documentation on how to build custom support using this workflow - https://www.mathworks.com/help/supportpkg/arduino/device-driver-blocks.html
I have also found this video to be helpful for the recommended workflow - https://www.mathworks.com/videos/creating-a-simulink-block-using-matlab-code-98734.html

类别

在 Help Center 和 File Exchange 中查找有关 Embedded Coder 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