Simulink & Arduino: Transmit Serial strings

I am trying to transmit serial data out of an Arduino in Simulink, see model below.

I am getting prompted with

The 'MATLABSystem' block cannot accept a signal of type string. A signal of type string is connected to 'Input Port 1' of block 'simulink_arduino_comm_test/Serial Transmit1'.

An error occurred while propagating data type 'string' from 'simulink_arduino_comm_test/To String1', output port 1.

Can I not transmit serial data?

If not, how can I generate a sentence with a start-character, checksum, and end-character without using a string or char array?

Answer 1

[Urmila Rajpurohith]

you can refer to the below link which answers "How to implement serial communication between Simulink and Arduino" :

https://www.mathworks.com/matlabcentral/answers/99305-how-to-implement-serial-communication-between-simulink-r2012b-and-an-arduino

[Christoph Spiess]

The example doesn't use the same blockset like shown in the question.

I'm currently struggling with the same problem:

how can I generate a sentence with a start-character, checksum, and end-character without using a string or char array?