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I m integrating TCP/IP stack and compiling it with C166 Kiel compiler. The TCP/IP stack is from microchip. I m getting the error
"GENERICTYPEDEFS.H(144): error C27: illegal type specifier" line 144 contains "typedef unsigned long long QWORD; "
This 64 bit dataype is being used frequently by TCP/IP stack. How can we get this datatype in keil? I found out that there is a file limits .h which defines the limits of the datatype
/*-------------------------------------------------------------------------- LIMITS.H ANSI standard include file for C166/EC++ Version 5. Copyright (c) 1992-2004 Keil Elektronik GmbH and Keil Software, Inc. All rights reserved. --------------------------------------------------------------------------*/ #ifndef __LIMITS_H__ #define __LIMITS_H__ #define CHAR_BIT 8 /* Number of bits in any "char" */ #define CHAR_MAX 127 /* Max "char" value */ #define CHAR_MIN -128 /* Min "char" value */ #define SCHAR_MAX 127 /* Max "signed" "char" value */ #define SCHAR_MIN -128 /* Min "signed" "char" value */ #define UCHAR_MAX 255 /* Max "unsigned" "char" value */ #define SHRT_MAX 32767 /* Max ("signed") "short" value */ #define SHRT_MIN (-32767-1) /* Min ("signed") "short" value */ #define USHRT_MAX 0xFFFF /* Max "unsigned" "short" value */ #define INT_MAX 32767 /* Max ("signed") "int" value */ #define INT_MIN (-32767-1) /* Min ("signed") "int" value */ #define UINT_MAX 0xFFFF /* Max "unsigned" "int" value */ #define LONG_MAX 2147483647L /* Max ("signed") "long" value */ #define LONG_MIN (-2147483647L-1) /* Min ("signed") "long" value */ #define ULONG_MAX 0xFFFFFFFF /* Max "unsigned" "long" value */ #endif
"long long" is not ANSI 'C' - so C166 may well not support it - you'll have to check the documentation
"The TCP/IP stack is from microchip"
Have you read the licence carefully? Vendor-provided software like this usually has an "only to be used on our products" clause...
There are plenty of generic (and free) TCP/IP stacks available for "small" microcontrollers - why not look at them? They would not be using non-standard extensions...
What size is an unsigned long long with the Microchip compiler?
I cannot think of a reason why a TCP (V4) stack would need a 64 bit variable.
Ok,
Just re-read your post - So it's 64 bit on Microchip.
Anyway - I still cannot see a need for it. All I've ever seen (and maintained) have needed a maximum of 32 bit.
"All I've ever seen (and maintained) have needed a maximum of 32 bit."
Likewise.
Sounds like all the more reason to ditch the Microchip stack and go for something generic...
"...usually has an 'only to be used on our products' clause"
That was certainly true of Microchip's Zigbee stack that they used to give away for free (dunno if they still do).
It would be counterproductive for a chip manufacturer to supply a no-cost TCP/IP stack that they let you use together with chips from other manufacturers.
maybe that's why they put in little proprietary dependencies like this...!