Lpc2000

Dear all

I'm trying to recompile the USBmem example created by Keil for the 
LPC2148 using the GCC GNU compiler version 3.3.1

I introduced the __attribute__ ((__packed__)) in all structs and I 
replaced the Keil __packed attribute related to 2 WORD pointers with 
the related instructions, but again the code doesn't work. 

Does anybody realize the porting of the USBmem example using the GCC 
compiler ?

Thank you 
Paolo

> I'm trying to recompile the USBmem example created by Keil for the
> LPC2148 using the GCC GNU compiler version 3.3.1
> 
> I introduced the __attribute__ ((__packed__)) in all structs and I
> replaced the Keil __packed attribute related to 2 WORD pointers with
> the related instructions, but again the code doesn't work.
> 
> Does anybody realize the porting of the USBmem example using the GCC
> compiler ?


Be sure USB_EndPoint0() is being called correctly or nothing will work.

Joel

> Be sure USB_EndPoint0() is being called correctly or nothing
> will work.

I'm doing the same thing with the VCOM example, and I think the biggest
stumbler is that the interrupts are wildly different between Keil and GCC.
Personally, I've got interrupts hooked back up correctly, but still no go.
Not that I've spent too many hours what with the holidays...

Keep me posted if anyone out there has pointers; this is an interesting
thread (for me at least).

Steve

Steve Franks
Staff Engineer
Franks Development, LLC
http://www.franks-development.com
(520) 312-0089


[Non-text portions of this message have been removed]

> I'm doing the same thing with the VCOM example, and I think the biggest
> stumbler is that the interrupts are wildly different between Keil and GCC.
> Personally, I've got interrupts hooked back up correctly, but still no go.
> Not that I've spent too many hours what with the holidays...
> 
> Keep me posted if anyone out there has pointers; this is an interesting
> thread (for me at least).

Try setting breakpoint in error handling code of USB interrupt.  If all is
setup correctly you shouldn't see errors, and USB_EndPoint0() should be
called.  If not confirm PLL1 and peripheral setup.


Joel

> > Be sure USB_EndPoint0() is being called correctly or nothing
> > will work.
> 
> I'm doing the same thing with the VCOM example, and I think the biggest
> stumbler is that the interrupts are wildly different between Keil and GCC.
> Personally, I've got interrupts hooked back up correctly, but still no go.
> Not that I've spent too many hours what with the holidays...
> 
> Keep me posted if anyone out there has pointers; this is an interesting
> thread (for me at least).


Also depending on what you have USB_MAX_PACKET defined as this call may
truncate the outgoing data, resulting in incorrect dialog:

void USB_DataInStage (void)


Joel