Setup an IRQ on a component

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originally posted by soin@Sep 19 2006, 05:12 PM

hi,

you have to use the "create new component" tool in sopc builder: insert your hdl file in the "hdl files"page and then specify your pins function in the "signals" page, nad in your case your interupt pin. before you had to define your interupt as an output pin of your hdl component.

bye

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Hi Soin,

I already added my counter component to SOPC Builder. Here is the wrapper which instantiates the task logic of counter and its interface (defining control , status , ... registers) :

module counter_avalon_interface

(

clk , // global signal , clk , 1bit , input

reset_n , // global signal , reset , 1bit , input

chipselect , // avalon_slave 0 , chipselect , 1bit , input

address , // avalon_slave_0 , address , 2bit , input

write , // avalon_slave_0 , write , 1bit , input

writedata , // avalon_slave_0 , writedata , 8bit , input

read , // avalon_slave_0 , read , 1bit , input

readdata , // avalon_slave_0 , writedata , 8bit , output

counter_out, // avalon_slave_0 , writedata , 8bit , export

intr // avalon_slave_0 , writedata , 1bit , export ?????

);

I also assigned counter_out to LED&#39;s but I am not sure of :

1) what pin I should assign intr to make CPU interrupted when it is high.

2) What I should do with my component to make it CPU-interruptable like UART , PIO , ....

Have you got ideas about this ?

Regards,

Quan