I have been trying to interface my Arduino Mega2560 with a 20×4 LCD display. I need to connect it to other systems in Simulink so I read on a different forum one of the best ways to do this was through an S function block. I used the I2C LCD library from https://github.com/fdebrabander/Arduino-LiquidCrystal-I2C-library to run my function on the Arduino IDE, so I am pretty sure the function is not the problem. One of the issues I cannot seem to solve is that the library for the I2C requires the Wire.h library and I have been unable to find a download for this.
The function in C++ I am trying to call in the S function is:
#include "DispFCN.h"
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
char unit_string[10];
char Disp_string[50];

LiquidCrystal_I2C lcd(0x27, 20, 4);

void DispFCN(int dataWhole, int dataDeci, int unit_ID) {
// The First step is to identify the type of unit by its ID
if (unit_ID == 1) {
sprintf(unit_string, "m/s");
} // This ID denotes windspeed

else if (unit_ID == 2) {
sprintf(unit_string, "F");
} // This ID denotes Temperature in F

sprintf(Disp_string, "%d.%d %s", A, B, unit_string);
// Print a message to the LCD.
lcd.backlight();
lcd.setCursor(1, 0);
lcd.print("Wind Velocity:");
lcd.setCursor(1, 1);
lcd.print(Disp_string);

}
Below is the way that I setup the S function:

The procedure that I was following to build the S function is based off of what was recommended in: https://www.youtube.com/watch?v=L86n9wZZz-g
I have a number of thoughts as to why it is not working, but the error from Simulink seems to imply that I need a version of Wire.h for the I2C LCD library to work, but I cannot find a copy of the Wire.h file to give to Matlab, so I am not sure what I need to do to get the S function to work.I have been trying to interface my Arduino Mega2560 with a 20×4 LCD display. I need to connect it to other systems in Simulink so I read on a different forum one of the best ways to do this was through an S function block. I used the I2C LCD library from https://github.com/fdebrabander/Arduino-LiquidCrystal-I2C-library to run my function on the Arduino IDE, so I am pretty sure the function is not the problem. One of the issues I cannot seem to solve is that the library for the I2C requires the Wire.h library and I have been unable to find a download for this.
The function in C++ I am trying to call in the S function is:
#include "DispFCN.h"
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
char unit_string[10];
char Disp_string[50];

LiquidCrystal_I2C lcd(0x27, 20, 4);

void DispFCN(int dataWhole, int dataDeci, int unit_ID) {
// The First step is to identify the type of unit by its ID
if (unit_ID == 1) {
sprintf(unit_string, "m/s");
} // This ID denotes windspeed

else if (unit_ID == 2) {
sprintf(unit_string, "F");
} // This ID denotes Temperature in F

sprintf(Disp_string, "%d.%d %s", A, B, unit_string);
// Print a message to the LCD.
lcd.backlight();
lcd.setCursor(1, 0);
lcd.print("Wind Velocity:");
lcd.setCursor(1, 1);
lcd.print(Disp_string);

}
Below is the way that I setup the S function:

The procedure that I was following to build the S function is based off of what was recommended in: https://www.youtube.com/watch?v=L86n9wZZz-g
I have a number of thoughts as to why it is not working, but the error from Simulink seems to imply that I need a version of Wire.h for the I2C LCD library to work, but I cannot find a copy of the Wire.h file to give to Matlab, so I am not sure what I need to do to get the S function to work. I have been trying to interface my Arduino Mega2560 with a 20×4 LCD display. I need to connect it to other systems in Simulink so I read on a different forum one of the best ways to do this was through an S function block. I used the I2C LCD library from https://github.com/fdebrabander/Arduino-LiquidCrystal-I2C-library to run my function on the Arduino IDE, so I am pretty sure the function is not the problem. One of the issues I cannot seem to solve is that the library for the I2C requires the Wire.h library and I have been unable to find a download for this.
The function in C++ I am trying to call in the S function is:
#include "DispFCN.h"
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
char unit_string[10];
char Disp_string[50];

LiquidCrystal_I2C lcd(0x27, 20, 4);

void DispFCN(int dataWhole, int dataDeci, int unit_ID) {
// The First step is to identify the type of unit by its ID
if (unit_ID == 1) {
sprintf(unit_string, "m/s");
} // This ID denotes windspeed

else if (unit_ID == 2) {
sprintf(unit_string, "F");
} // This ID denotes Temperature in F

sprintf(Disp_string, "%d.%d %s", A, B, unit_string);
// Print a message to the LCD.
lcd.backlight();
lcd.setCursor(1, 0);
lcd.print("Wind Velocity:");
lcd.setCursor(1, 1);
lcd.print(Disp_string);

}
Below is the way that I setup the S function:

The procedure that I was following to build the S function is based off of what was recommended in: https://www.youtube.com/watch?v=L86n9wZZz-g
I have a number of thoughts as to why it is not working, but the error from Simulink seems to imply that I need a version of Wire.h for the I2C LCD library to work, but I cannot find a copy of the Wire.h file to give to Matlab, so I am not sure what I need to do to get the S function to work. sfunctions, simulink, matlab, lcd, i2c, iic MATLAB Answers — New Questions

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