How to Read and Write Serial Port Data in Raspberry Pi

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靖邦 2023-11-13

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2046335-how-to-read-and-write-serial-port-data-in-raspberry-pi

评论： Walter Roberson 2023-11-13

Hi,

I want Raspberry Pi to run a piece of code independently, read and write data from the serial port separately, and the other recipient is my PC. Can I directly deploy this code into it?I followed the Mathworks tutorial, but I don't know where the problem occurred. My current steps are as follows:

r = targetHardware('raspberry')
deploy(r,'tablelook')
function tablelook()%#codegen
r = raspi;
pc = serialdev(r,'/dev/serial0');
dataToSend = 1;
byteStream = typecast(dataToSend, 'uint16');
write(pc, byteStream);
output = read(pc,5,'uint16');
end

Raspberry Pi receives a 5 * 1 matrix from the PC and sends a 0/1 logic judgment to the PC.The code can run,but the data is incorrect,it's all zero.I dont know why it cannot work.

Many thanks,

Bang

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靖邦 2023-11-13

There is anthoer way to detect the raspberry pi's serial port is open?My baud rates same,and others is same too.Here is my raspberrry pi parameter and PC parameter: