[Fx2lib-devel] Updates to interrupt handlers and auto vector code.

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

A while back, Steve Calfee proposed a patch that put default interrupt 
handlers into the fx2.lib instead of having to have the firmware define 
them.  I've done a little bit of work with this over the last couple 
days made a few compatibility changes to the library.

* Fx2.lib now builds default handlers for usb and gpif interrupt 
handlers.  These handlers do not clear the interrupt.  (I didn't want to 
take up extra firmware space for handlers that aren't being used.  
Without any assembly code to clear the interrupt, the blank handlers 
don't take up much space really.  All that is there is the reti 
instruction. 
* I renamed usbjt.h to autovector.h.
   In the autovector header, the two main macros USE_USB_INTS() and 
USE_GPIF_INTS() used to link in the same usb jump table.  They still do 
(The jump table is one big table for both sets of interrupts and I don't 
see a simple way to separate them), but if you are not using GPIF 
interrupts (INT4) then the overlay for the jump table is not included.  
This leaves INT4 available to be used as an external interrupt if you 
wanted to configure it that way.  (You can't use GPIF interrupts without 
using USB interrupts though)
 * I started a new header fx2ints.h.  This header includes definitions 
and ENABLE/CLEAR macros for the standard fx2 interrupts (timers, serial, 
i2c, suspend, resume etc).   These interrupts don't require default 
routines since there is no linking requirement and a jump table so all 
you have to do is enable the interrupt and create an interrupt handler 
with the appropriate constant.
 * Updated bulkloop and eeprom sample firmware as well as the firmware 
framework.

Thanks for contributions/comments everyone.  Latest changes are pushed 
to github.

-Dennis