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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

Hi,

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The /dev have ttyAL0 in it, but not none of the other ports. I'm able to open and communicate with ttyAL0, but none other port. Is there something I have to do specially for the device tree or driver I have to change? I did look at the altera_uart.c and can't figure out the problem.

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If you don't have ttyAL1, ttyAL2, etc. in your /dev directory, please make it by using the 'mknod' command.

http://homepages.cwi.nl/~aeb/linux/man2html/man1/mknod.1.html

(http://homepages.cwi.nl/%7eaeb/linux/man2html/man1/mknod.1.html)

Kazu