I am writing a program trying to communicate with serial ports of the raspberry pi. The program can find the device linked to the port. But when I want to open that port, it threw me an exception saying that the serial port can't be opened, permission denied. I logged as root(pi) and I think I added myself to "dialout". However nothing worked. What will be the problem of my situation? Hope there's any could help, thanks in advance.
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Are you sure you have the right device? – BugFinder Oct 19 '17 at 07:07
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What do you mean by right device? I can find the name of the device, that should indicate the device was right, wasn't it? – Kevin Hu Oct 19 '17 at 07:14
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Make sure you have read write privileges to the serial device. If not use chmod util to do that. – danglingpointer Oct 19 '17 at 07:19
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just cos /dev/xxx exists doesnt make it the right device file - but so far this isnt a c# issue – BugFinder Oct 19 '17 at 07:23
