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Altera_Forum's avatar
Altera_Forum
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15 years ago

Linux freeze JTAG problem

Hi all, I've got a problem on my board. Whereas I selected in Device Drivers-> Character devices -> Serial drivers : [*] Bypass output when no connection My uClinux freeze after 5 minute...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Hello guys,

i had this problem either but without using uCLinux.

The same problem appears when using the µC/OS-II operating system.

There the problem lies within the altera hal.

I could fix it, using the following defines symbols (for the preprocessor):

ALTERA_AVALON_JTAG_UART_BUF_LEN=8192

This increases the buffer.

And within the source-code i used this ioctl to setup the non-blocking mode:

fcntl(STDOUT_FILENO, F_SETFL, O_NONBLOCK);

fcntl(STDERR_FILENO, F_SETFL, O_NONBLOCK);

I don't know if this sollution can be ported to uCLinux?!