How to clear the serial buffer of Raspberry Pi

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Hi
I use MATLAB to control the serial communication of Raspberry Pi, but its communication frequency is too fast, and the serial buffer is easily full. I want to know how to clear the serial buffer?
Here is my code:
clear all
r = raspi;
pc = serialdev(r,'/dev/serial0',9600,8,'none',1);
pc.Timeout = 1;
out = 0;
data1 = xlsread('data.xlsx',1);
tou = interp1(0:3600:23*3600,data1,0:1:24*3600-1,'spline')';
tou = [tou;tou];
load('electricity_price.mat');
money = money/0.58*0.86;
price = [0:24*3600-1;kron(money,ones(1,3600))]';
price = [price;price];
while true
try
data = read(pc,2,'int32');
if length(data) > 0
Troom = double(data(1))/1000;
t = double(data(2));
tout = tou(t+1:900:t+6*900);
P = price(t+1:900:t+6*900,2);
out = look(Troom, tout,P);
end
write(pc, out, 'int8');
pause(0.1)
catch
disp('NOT COMPUTE')
end
end
There is no problem with the connection, but now that the buffer is full, I cannot continue reading or writing

回答(1 个)

Angelo Yeo
Angelo Yeo 2023-12-26
The function flush (since R2019b) clears serial port device buffers. Would this function work for you?
  3 个评论
Angelo Yeo
Angelo Yeo 2023-12-27
Thank you for your reply. Can I ask you how you realized Raspberry Pi does not support flush? Did you get any error message when you tried it?

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