how to send data from matlab to serial port

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SARAH LONER 2020 年 2 月 6 日

i get r value as either 0 or 1 or 2 ... 5

i need to send this r value to serial port

i used this code

delete(instrfindall);

s = serial('COM14', 'BaudRate', 9600, 'Terminator', 'CR', 'StopBit', 1, 'Parity', 'None');

fopen(s);

fprintf(s,'%i',r)

out = fscanf(s)

but i receive output as 0*0 empty char array

can any1 help me to solve this?

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