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Altera_Forum's avatar
Altera_Forum
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13 years ago

UART port trouble

Hi, Thanks in advance if anyone can shine light to the UART problem I am having. I can open one ttyAL port but can't open all other serial port or communicate to it, and I have name all my p...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

I think each serial port has to have different minor/major

ttyS0 (AL0) ->4,64

ttyS1 (AL1) ->4,65

ttyS2 (AL2) ->4,66

ttyS3 (AL3) ->4,67

ttyS4 (AL4) ->4,68

etc..

Instead of creating them using mknod each time you boot the system, try to put them into the filesystem before using "make"

Good luck