Using multiple "Serial" ports of arduino mega 2560

How to read data from Arduino Mega which is already connected with a sensor serially (For exmaple :Tx2/Rx2 or Tx3/Rx3)?

[Ameer Hamza]

Which Serial port is connected to the sensor? Serial0? If not, then you can connect the Arduino to the PC with USB and read data from the serial port.

Answer 1

[Gayatri Menon]

Hi,

In MATLAB,

use device() to connect to serial device on Arduino

arduinoObj = arduino("COM16","Leonardo","Libraries",{'SPI','Serial','I2C'})
% For accessing TX2/RX2
serialdevObj = device(arduinoObj,'SerialPort',2)
write(serialdevObj,[88 99 65]);

Refer the following links for more info

https://in.mathworks.com/help/supportpkg/arduinoio/ref/matlabshared.serial.device.

https://in.mathworks.com/help/supportpkg/arduinoio/ref/matlabshared.serial.device.read.html

https://in.mathworks.com/help/supportpkg/arduinoio/ref/matlabshared.serial.device.write.html

In Simulink ,

use Serial Transmit and Serial Receive blocks to connect serial device on Arduino

The following examples might be helpful for you

https://in.mathworks.com/help/supportpkg/arduino/ref/send-and-receive-serial-data-using-arduino-hardware.html

https://in.mathworks.com/help/supportpkg/arduino/ref/encode-decode-protocol-example.html

Thanks

Gayatri

[Naim Uddin]

Thanks a lot