Re: [Fx2lib-devel] Interrupting on GPIF idle

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

Eric Winsor wrote:
> OK, so all I need to do is write to the GPIFTRIG register again to 
> restart the GPIF.  
Correct, but there are other issues, like which flowstate is currently 
selected, which fifo you want to write to etc.  The gpif.h/gpif.c file 
in fx2lib has functions to do pretty much everything you need to do with 
gpif.  (You'll have to stop using Keil to use it though :) ).
> Also I will need to write 0x01 to GPIFIE to enable 
> the done interrupt 
And you have to have the gpif interrupts set up correctly.

> and write 0x01 to GPIFIRQ when Ive serviced the 
> interrupt.  Correct?
>   
And you also have to clear the main gpif interrupt.  Order is 
important.  See the TRM.  I've forgotten the details because I just use 
the GPIF macros in the fx2 library.
> Also, what does the waveform bit (bit 1) in GPIFIE do?
>   
You'll have to look it up and post back.  I can't recall off the top of 
my head.

-Dennis