NIOS II Custom Instruction blocks printf

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kalyansrinivas

Joined: 07 Jul 2007
Posts: 66
Helped: 1

23 Oct 2009 9:26 NIOS II Custom Instruction blocks printf

Hi
I am trying to add custom Instruction block to my SOPC Builder Design but i find the printf gets blocked whenever i add custom instruction to my design .I even powered off and powered on by board but still i see that the Printf doesnt print on the console

Please help me out

regards
M Kalyansrinivas

shitansh

Joined: 06 Jan 2009
Posts: 136
Helped: 12

28 Oct 2009 8:16 Re: NIOS II Custom Instruction blocks printf

Hi,

Go to QuartusII project directory and then, delet db and incremental db directory from that and recompile your Qurtus project. Then try, printf will be there on console of NIOSII IDE.

HTH
--
Shitansh Vaghela

kalyansrinivas

Joined: 07 Jul 2007
Posts: 66
Helped: 1

29 Oct 2009 4:28 NIOS II Custom Instruction blocks printf

Hi Shitansh Vaghela

Thank you for the reply and i will try it out

but one doubt that

if i recomplile the qu(at)rtus project i found that db and incremental db folders are again getting created

so please tell me whether after deleting db and incremental db folders do i need to re-synthesis
qu(at)rtus project or shall i just run nios -ide compiler

Thank you vey much for the reply

regards
M Kalyansrinivas

shitansh

Joined: 06 Jan 2009
Posts: 136
Helped: 12

29 Oct 2009 6:08 Re: NIOS II Custom Instruction blocks printf

HI,

Say you are getting problem in printf now every thing else if working fine in NIOSII IDE (say i = j+k Wink

then you may need to resynthesis and compile your qu(at)rtus project, before recompile and resynthesis you need to delet db and incremental db folder form your qu(at)rtus project directry and after new compilation and synthesis db and incremental db will agin created you need not to delet at this time untill you want to resynthesis and compile again.

HTH
--
Shitansh Vaghela

kalyansrinivas

Joined: 07 Jul 2007
Posts: 66
Helped: 1

30 Oct 2009 4:58 Re: NIOS II Custom Instruction blocks printf

Hi Shitansh Vaghela

I did the same but i could not end up with printf printing on the console ,

but before to that i see the following error in the Sopc Generator when i try to add custom instruction to my design

Error : slave(cpu_adder_inst/avalon_slave) data width is 0

Error : Generator program for module 'cpu' did not run successfully

But even i have this error SOPC generates the ptf file and i am able to proceed to genarating the sof file

Please help me out of this problem

regards
M Kalyansrinivas