Re: [Fx2lib-devel] Interrupting on GPIF idle

[Dennis M. <de...@ub...>]

Eric Winsor wrote:
> In the Cypress frameworks code (pariph.c) there are two interrupt functions:
>
> void ISR_GpifComplete(void) interrupt 0
> {
> }
> void ISR_GpifWaveform(void) interrupt 0
> {
> }
>
>  From my study yesterday I believe that I can have ISR_GpifComplete() 
> execute when a GPIF transaction goes idle.  I would like to use this to 
> count GPIF transactions and insert a USB packet containing this count 
> and a marker between GPIF transactions.  To date I have been starting 
> the GPIF only with GpifInit() at the start of my firmware.  Is there 
> another way to restart the GPIF after it goes idle without calling 
> GpifInit() again?
>
>   

GpifInit doesn't actuall start a transaction.  You need to start the 
single read, single write, fifo read or fifo write explicitly each time 
a transaction is started.  fx2lib defines all these function by the 
way.  There are MACROS for enabling/disabling the gpif interrupts too.

-Dennis