EDK6.1 MBlaze : problems with INTC IPIF and external inter

[Alessandro Scaglione]

Hi,
I have created a IPIF device based on ssp1 for a MicroBlaze system. I have
tested each device and they correctly generate interrupts.
Now I have to use INTC to handle more than one interrupt signals and some
external interrupt signals.
By default IPIF ssp1 uses generic driver, that seems not support PARAMETER
INT_HANDLER.
1.How can attach a int_handler to IPIF device? I have to write a specific
driver for each IPIF device?
2.It's possible to specify interrupt level for external interrupt signals?

Thanks

 

[Matthew Ouellette]

Alessandro,

Alessandro Scaglione wrote:

By default IPIF ssp1 uses generic driver, that seems not support
PARAMETER INT_HANDLER.
1.How can attach a int_handler to IPIF device? I have to write a
specific driver for each IPIF device?

Rather than using the default generic driver, you will need to create a
custom driver for your device that supports interrupts. Specifically,
you will need an array that describes the interrupt handler for a unique
interrupt port. For an idea of how the MDD file should look, see the
timer-counter drivers as reference. Also, consult the EST Guide for
information on MDD syntax.

2.It's possible to specify interrupt level for external interrupt signals?

Yes, it is. This is done on the interrupt declaration line in the MHS
file. Below is an example snippet. Consult the EST Guide for the MHS
attributes that can be attached on interrupt ports.

Matt

# Global Ports
PORT external_int = external_int, DIR = IN, EDGE = RISING, SIGIS =
INTERRUPT, LEVEL=LOW
PORT GPO = GPO_OUT, DIR = IO
PORT sys_clk = sys_clk, DIR = IN
PORT sys_rst = sys_rst, DIR = I

Thanks

 

[Alessandro Scaglione]

Thanks for your answers,

in Xilinx forum
http://toolbox.xilinx.com/cgi-bin/forum?50@60.SnQlabZvfnD.5@.ee82b9c I
read that someone uses uartlite driver instead generic driver to handle
interrupts.

Another question on external interrupts:
I need to write a device driver for extenal interrupts, too?

 

[Matthew Ouellette]

Alessandro,

The external interrupt will not require drivers like other peripherals.
It will, however, require an isr defined in your user application. I
can send you an example project that does just this. Pls email me
off-list and I can send it to you.

Matt

Alessandro Scaglione wrote:

Thanks for your answers,

in Xilinx forum
http://toolbox.xilinx.com/cgi-bin/forum?50@60.SnQlabZvfnD.5@.ee82b9c I
read that someone uses uartlite driver instead generic driver to handle
interrupts.

Another question on external interrupts:
I need to write a device driver for extenal interrupts, too?