I have a similar issue since installing R2018B, which then automatically updated the Raspberry Pi Matlab server to version 18.2.1 from 18.1.0. If the connection is left too long without use it times out afterwards. For example, If I do this in a script:
clear dac
clear rpi
rpi=raspi
dac = rpi.spidev('CE1',1,2000000)
writeDAC0(rpi,dac,2.0)
for i=1:100
writeDAC0(rpi,dac,2.0+i/100)
fprintf('%d ',i)
pause(1)
end
It works fine, and if I am fast enough to start the for loop again, it keeps going. If I enter these commands manually, and wait too long after the rpi=raspi command, then the dac = ... command times out. If I enter the rpi=raspi and the dac = ... commands quickly and wait too long for the writeDAC0 command, it times out. If I try the writeDAC0 command again after a few seconds, it times out.
The behaviour is the same if I just try simple commands like rpi.writeDigitalPin, etc.
Timeout message: Timeout while receiving data from remote server
I've tried running a continuous ping in a command shell (Windows), but this makes no difference. netstat -n reports the TCP connection to 18734 active throughout the whole process, whether I time out or not, so I suspect it is somewhere in the matlabIOserver on the Raspberry Pi, or in Matlab on windows.
Everything works fine with no timeouts on R2018A and matlabIOserver v18.1.0.
Working configuration:
- Windows 64 bit
- Matlab R2018A
- Raspberry Pi Model 3 B (not +)
- server_v18.1.0 on Rapberry Pi
Not working configuration:
- Windows 64 bit
- Matlab R2018B
- Raspberry Pi Model 3 B (not +)
- server_v18.2.1 on Rapberry Pi
