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More documentation updates in lwip/arch.h
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@ -52,16 +52,37 @@
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* @ingroup sys_layer
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* All defines related to this section must not be placed in lwipopts.h,
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* but in arch/cc.h!
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* These options cannot be \#defined in lwipopts.h since they are not options
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* of lwIP itself, but options of the lwIP port to your system.
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* @{
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*/
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/** Define the byte order of the system.
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* Needed for conversion of network data to host byte order.
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*/
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#ifndef BYTE_ORDER
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#define BYTE_ORDER LITTLE_ENDIAN
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#endif
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/** Define random number generator function of your system */
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#ifndef LWIP_RAND()
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#define LWIP_RAND() ((u32_t)rand())
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#endif
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/** Platform specific diagnostic output */
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#ifndef LWIP_PLATFORM_DIAG
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#define LWIP_PLATFORM_DIAG(x) do {printf x;} while(0)
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#endif
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/** Platform specific assertion handling */
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#ifndef LWIP_PLATFORM_ASSERT
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#define LWIP_PLATFORM_ASSERT(x) do {printf("Assertion \"%s\" failed at line %d in %s\n", \
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x, __LINE__, __FILE__); fflush(NULL); abort();} while(0)
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#endif
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/** Define this to 1 in arch/cc.h of your port if you do not want to
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* include stddef.h header to get size_t. You need to typedef size_t
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* by yourself in this case.
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* This cannot be \#defined in lwipopts.h since this is not an option
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* of lwIP itself, but an option of the lwIP port to your system.
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* Additionally, this header is meant to be \#included in lwipopts.h
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* (you may need to declare function prototypes in there).
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*/
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#ifndef LWIP_NO_STDDEF_H
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#define LWIP_NO_STDDEF_H 0
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@ -74,10 +95,6 @@
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/** Define this to 1 in arch/cc.h of your port if your compiler does not provide
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* the stdint.h header. You need to typedef the generic types listed in
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* lwip/arch.h yourself in this case (u8_t, u16_t...).
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* This cannot be \#defined in lwipopts.h since this is not an option of lwIP
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* itself, but an option of the lwIP port to your system.
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* Additionally, this header is meant to be \#included in lwipopts.h
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* (you may need to declare function prototypes in there).
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*/
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#ifndef LWIP_NO_STDINT_H
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#define LWIP_NO_STDINT_H 0
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@ -98,10 +115,6 @@ typedef uintptr_t mem_ptr_t;
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/** Define this to 1 in arch/cc.h of your port if your compiler does not provide
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* the inttypes.h header. You need to define the format strings listed in
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* lwip/arch.h yourself in this case (X8_F, U16_F...).
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* This cannot be \#defined in lwipopts.h since this is not an option of lwIP
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* itself, but an option of the lwIP port to your system.
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* Additionally, this header is meant to be \#included in lwipopts.h
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* (you may need to declare function prototypes in there).
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*/
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#ifndef LWIP_NO_INTTYPES_H
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#define LWIP_NO_INTTYPES_H 0
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@ -249,7 +262,7 @@ extern "C" {
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#endif /* PACK_STRUCT_FLD_S */
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/** Eliminates compiler warning about unused arguments. */
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/** Eliminates compiler warning about unused arguments (GCC -Wextra -Wunused). */
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#ifndef LWIP_UNUSED_ARG
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#define LWIP_UNUSED_ARG(x) (void)x
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#endif /* LWIP_UNUSED_ARG */
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