Electronics & Programming


Open Source electronics development and programming

  • You are not logged in.
  • Root
  • » SDCC
  • » [Sdcc-user] Cypress FX2LP - problem after upgrading from sdcc-2.6.0 [RSS Feed]

#1 March 25, 2008 20:18:52

Steven P.
Registered: 2009-11-02
Reputation: +  0  -
Profile   Send e-mail  

[Sdcc-user] Cypress FX2LP - problem after upgrading from sdcc-2.6.0

Greetings All,

sdcc-2.6.0 was successfully compiling code for a Cypress FX2LP chip until
it hit this bug - SIGSEGV using auto variable.

This spurred me to upgrade to sdcc-2.8.0 (currently using #5117). However,
since doing that, I've come across another problem. The code is loaded
successfully into the FX2LP, but after reset, it behaves unpredictably -
often not renumerating properly and thus not appearing on the USB bus.

Rolling back to a previous version of my code allows sdcc-2.6.0 to compile
it without the SIGSEGV using auto variable problem. This previous version
of my code still exhibits the second problem when compiling with
sdcc-2.8.0. This allows comparison between the output of the two sdcc

There is a difference between the main .rst files as follows:

438 .area HOME (CODE)
0000 439 __interrupt_vect:
0000 02 00 67 440 ljmp __sdcc_gsinit_startup

447 .area HOME (CODE)
0064 448 __interrupt_vect:
0064 02 00 6C 449 ljmp __sdcc_gsinit_startup

I assume that HOME is meant to be the start of the code segment and that it
should start at address 0000? Why does sdcc-2.8.0 start the interrupt
vector table at 0064? Am I misunderstanding something?

Any other pointers for where I can look to solve this problem would be
greatly appreciated.


This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/_______________________________________________
Sdcc-user mailing list


  • Root
  • » SDCC
  • » [Sdcc-user] Cypress FX2LP - problem after upgrading from sdcc-2.6.0 [RSS Feed]

Board footer

Moderator control

Enjoy the 11th of December

The Forums are managed by develissimo stuff members, if you find any issues or misplaced content please help us to fix it. Thank you! Tell us via Contact Options
Leave a Message
Welcome to Develissimo Live Support