Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
19 years ago

rgd serial port as std i/o

Hi

i would like to clarify myself

regarding the following.

in two processor system

if i attach serial port as std i/o tothe first

processor(as per alphabetical order) and the other

processor to jtag uart, if i run it is doing this

by printing on the console as

"can't open uart : permission denied"

and then it stops

what could be the reason?

also i observe that it launches in the alphabetical order.

please do comment on this.

regards

prasad

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    19 years ago

    Does it works if you remove the second CPU attached to JTAG uart?

    it seems more a problem of the configuration of the peripherals on the first core...

    Paolo
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    19 years ago

    Hi paolo

    actually i have attached only one processor to the jtag uart and the other

    to the serial port. exclusively

    can u tell the reason.

    i am unable to get it.

    regards

    prasad
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    19 years ago

    What I was saying is that the problem you have seems to me not relative to the fact you are using 2 CPUs.

    Does the same problem happens when your design has just 1 CPU?

    Paolo