Lpc2000

I use IAR EWAVR and IAR EWARM.

In my experience IAR offers a clean interface, clean debugger, and excellent
support (West Coast office).  The C-Spy plug-ins are a nice feature.  I've
found the IAR compiler to be more strict (perhaps more compliant?) than
Keil.  I've heard the MISRA feature touted as a built-in Lint.


Example - Keil code IAR does not like:

#define P_EP(n) ((USB_EP_EVENT & (1 << (n))) ? USB_EndPoint##n : NULL)

const void (* USB_P_EP[16]) (DWORD event) = {
  P_EP(0),
  P_EP(1),
  P_EP(2)
};


Reworked for IAR:

typedef void (*PUSB_P_EP)( DWORD event );

const PUSB_P_EP USB_P_EP[] = {

  USB_EndPoint0,
  USB_EndPoint1,
  USB_EndPoint2
};

I heard rumor at one point Keil did not completely implement floating point
numbers to spec, which lead to rounding errors; but offered faster floating
point performance.  Keep this in mind when comparing floating point
performance between the two.


Joel