X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;ds=sidebyside;f=bertos%2Fcfg%2Fmacros.h;h=4af10246f2ad6e646a44f242259cf8d920b12b3e;hb=refs%2Fheads%2Fmaster;hp=6c9b63ef0001b0877a0086a162f83b312cc7f10d;hpb=12d76a7eda50f3ca970b39806ea68e207a1b4495;p=bertos.git

diff --git a/bertos/cfg/macros.h b/bertos/cfg/macros.h
index 6c9b63ef..4af10246 100644
--- a/bertos/cfg/macros.h
+++ b/bertos/cfg/macros.h
@@ -250,6 +250,9 @@
 /** Check if \a x is an integer power of 2. */
 #define IS_POW2(x)     (!(bool)((x) & ((x)-1)))
 
+/** Check if \a x is aligned to \a byte_count bytes */
+#define IS_ALIGNED(x, byte_count) ((uintptr_t)(const void *)(x) % (byte_count) == 0)
+
 /** Calculate a compile-time log2 for a uint8_t */
 #define UINT8_LOG2(x) \
 	((x) < 2 ? 0 : \
@@ -443,5 +446,22 @@ INLINE bool is_aligned(const void *addr, size_t size)
 
 /** \} */ //defgroup macros
 
+
+/**
+ * Macro to unpack the ip addres from lwip format in 4 int
+ * \param addr is struct ip_addr ip_addr;
+ * \return for int variable separated from comma
+ *
+ * \code
+ * //Upack into 4 int the lwip ip address
+ * LOG_INFO("dhcp ok: ip = %d.%d.%d.%d\n", IP_ADDR_TO_INT_TUPLE(netif.ip_addr.addr));
+ * \endcode
+ */
+#define IP_ADDR_TO_INT_TUPLE(addr) \
+		(int)((addr) >>  0 & 0xff), \
+		(int)((addr) >>  8 & 0xff), \
+		(int)((addr) >> 16 & 0xff), \
+		(int)((addr) >> 24 & 0xff)
+
 #endif /* MACROS_H */