diff --git a/sys/net/include/ieee802154_frame.h b/sys/net/include/ieee802154_frame.h
index 42af6b5dfa..e983b1682b 100644
--- a/sys/net/include/ieee802154_frame.h
+++ b/sys/net/include/ieee802154_frame.h
@@ -26,23 +26,44 @@
 #include <stdint.h>
 
 /* maximum 802.15.4 header length */
-#define IEEE_802154_MAX_HDR_LEN         23
+#define IEEE_802154_MAX_HDR_LEN         (23)
 /* ...and FCS*/
-#define IEEE_802154_FCS_LEN             2
+#define IEEE_802154_FCS_LEN             (2)
 
-#define IEEE_802154_BEACON_FRAME        0
-#define IEEE_802154_DATA_FRAME          1
-#define IEEE_802154_ACK_FRAME           2
-#define IEEE_802154_MAC_CMD_FRAME       3
+#define IEEE_802154_BEACON_FRAME        (0)
+#define IEEE_802154_DATA_FRAME          (1)
+#define IEEE_802154_ACK_FRAME           (2)
+#define IEEE_802154_MAC_CMD_FRAME       (3)
 
-#define IEEE_802154_SHORT_ADDR_M        2
-#define IEEE_802154_LONG_ADDR_M         3
+#define IEEE_802154_SHORT_ADDR_M        (2)
+#define IEEE_802154_LONG_ADDR_M         (3)
 
 #define IEEE_802154_SHORT_MCAST_ADDR    (0xffff)
 #define IEEE_802154_LONG_MCAST_ADDR     {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
                                           0xff, 0xff}}
+/**
+ * @brief   Transform 16-bit number from network order (big-endian) to
+ *          little-endian byte order (as used by IEEE 802.15.4).
+ */
+#define NTOLES(a)   (((a) >> 8) | (((a) & 0x00ff) << 8))
 
-#define IEEE_802154_PAN_ID              0x1234
+/**
+ * @brief   Transform 16-bit number from little-endian byte order to network
+ *          order (big-endian).
+ */
+#define LETONS(a)   NTOLES(a)
+
+/**
+ * @brief   Transform 16-bit number from host byte order to little-endian byte
+ *          order (as used by IEEE 802.15.4).
+ */
+#define HTOLES(a)   a
+
+/**
+ * @brief   Transform 16-bit number from little-endian byte order to host byte
+ *          order.
+ */
+#define LETOHS(a)   HTOLES(a)
 
 typedef struct __attribute__((packed)) {
     uint8_t frame_type;
@@ -84,6 +105,7 @@ uint8_t ieee802154_frame_init(ieee802154_frame_t *frame, uint8_t *buf);
 uint8_t ieee802154_frame_get_hdr_len(ieee802154_frame_t *frame);
 uint8_t ieee802154_frame_read(uint8_t *buf, ieee802154_frame_t *frame, uint8_t len);
 void ieee802154_frame_print_fcf_frame(ieee802154_frame_t *frame);
+uint16_t ieee802154_frame_get_fcs(const uint8_t *frame, uint8_t frame_len);
 
 /** @} */
 #endif /* IEEE802154_IEEE802154_FRAME */
diff --git a/sys/net/link_layer/ieee802154/ieee802154_frame.c b/sys/net/link_layer/ieee802154/ieee802154_frame.c
index 866cb457da..7a9e412a75 100644
--- a/sys/net/link_layer/ieee802154/ieee802154_frame.c
+++ b/sys/net/link_layer/ieee802154/ieee802154_frame.c
@@ -18,6 +18,13 @@
 
 #include "ieee802154_frame.h"
 
+#define ENABLE_DEBUG    (0)
+#if ENABLE_DEBUG
+#define DEBUG_ENABLED
+#endif
+#include "debug.h"
+
+#define IEEE_802154_FCS_POLY    (0x8408)  /* x^16 + x^12 + x^5 + 1 for LSB first */
 
 uint8_t ieee802154_hdr_ptr;
 uint8_t ieee802154_payload_ptr;
@@ -28,16 +35,16 @@ uint8_t ieee802154_frame_init(ieee802154_frame_t *frame, uint8_t *buf)
     /* Frame Control Field - 802.15.4 - 2006 - 7.2.1.1  */
     uint8_t index = 0;
 
-    buf[index] = ((frame->fcf.frame_type) |
-                 (frame->fcf.sec_enb << 3) |
-                 (frame->fcf.frame_pend << 4) |
-                 (frame->fcf.ack_req << 5) |
-                 (frame->fcf.panid_comp << 6));
+    buf[index] = (((frame->fcf.frame_type)      & 0x07) |
+                  ((frame->fcf.sec_enb    << 3) & 0x08) |
+                  ((frame->fcf.frame_pend << 4) & 0x10) |
+                  ((frame->fcf.ack_req    << 5) & 0x20) |
+                  ((frame->fcf.panid_comp << 6) & 0x40));
     index++;
 
-    buf[index] = ((frame->fcf.dest_addr_m << 2) |
-                 (frame->fcf.frame_ver << 4) |
-                 (frame->fcf.src_addr_m << 6));
+    buf[index] = (((frame->fcf.dest_addr_m << 2) & 0x0c) |
+                  ((frame->fcf.frame_ver   << 4) & 0x30) |
+                  ((frame->fcf.src_addr_m  << 6) & 0xc0));
 
     index++;
 
@@ -55,49 +62,62 @@ uint8_t ieee802154_frame_init(ieee802154_frame_t *frame, uint8_t *buf)
 
     /* Destination Address - 802.15.4 - 2006 - 7.2.1.4 */
     if (frame->fcf.dest_addr_m == 0x02) {
-        buf[index]     = frame->dest_addr[0];
-        buf[index + 1] = frame->dest_addr[1];
+        buf[index]     = frame->dest_addr[1];
+        buf[index + 1] = frame->dest_addr[0];
         index += 2;
     }
     else if (frame->fcf.dest_addr_m == 0x03) {
-        buf[index]     = frame->dest_addr[0];
-        buf[index + 1] = frame->dest_addr[1];
-        buf[index + 2] = frame->dest_addr[2];
-        buf[index + 3] = frame->dest_addr[3];
-        buf[index + 4] = frame->dest_addr[4];
-        buf[index + 5] = frame->dest_addr[5];
-        buf[index + 6] = frame->dest_addr[6];
-        buf[index + 7] = frame->dest_addr[7];
+        buf[index]     = frame->dest_addr[7];
+        buf[index + 1] = frame->dest_addr[6];
+        buf[index + 2] = frame->dest_addr[5];
+        buf[index + 3] = frame->dest_addr[4];
+        buf[index + 4] = frame->dest_addr[3];
+        buf[index + 5] = frame->dest_addr[2];
+        buf[index + 6] = frame->dest_addr[1];
+        buf[index + 7] = frame->dest_addr[0];
         index += 8;
     }
 
     /* Source PAN Identifier - 802.15.4 - 2006 - 7.2.1.5 */
     if (!(frame->fcf.panid_comp & 0x01)) {
         if (frame->fcf.src_addr_m == 0x02 || frame->fcf.src_addr_m == 0x03) {
-            buf[index]     = ((frame->src_pan_id >> 8) & 0xff);
-            buf[index + 1] = (frame->src_pan_id & 0xff);
+            buf[index + 1]  = ((frame->src_pan_id >> 8) & 0xff);
+            buf[index]      = (frame->src_pan_id & 0xff);
             index += 2;
         }
     }
 
     /* Source Address field - 802.15.4 - 2006 - 7.2.1.6 */
     if (frame->fcf.src_addr_m == 0x02) {
-        buf[index]     = frame->src_addr[0];
-        buf[index + 1] = frame->src_addr[1];
+        buf[index]     = frame->src_addr[1];
+        buf[index + 1] = frame->src_addr[0];
         index += 2;
     }
     else if (frame->fcf.src_addr_m == 0x03) {
-        buf[index]     = frame->src_addr[0];
-        buf[index + 1] = frame->src_addr[1];
-        buf[index + 2] = frame->src_addr[2];
-        buf[index + 3] = frame->src_addr[3];
-        buf[index + 4] = frame->src_addr[4];
-        buf[index + 5] = frame->src_addr[5];
-        buf[index + 6] = frame->src_addr[6];
-        buf[index + 7] = frame->src_addr[7];
+        buf[index]     = frame->src_addr[7];
+        buf[index + 1] = frame->src_addr[6];
+        buf[index + 2] = frame->src_addr[5];
+        buf[index + 3] = frame->src_addr[4];
+        buf[index + 4] = frame->src_addr[3];
+        buf[index + 5] = frame->src_addr[2];
+        buf[index + 6] = frame->src_addr[1];
+        buf[index + 7] = frame->src_addr[0];
         index += 8;
     }
 
+#ifdef DEBUG_ENABLED
+    DEBUG("INFO: IEEE 802.15.4 header initialized:\n");
+
+    for (size_t i = 0; i < index; i++) {
+        printf("%02x ", buf[i]);
+
+        if (!((i + 1) % 16) || i == index - 1) {
+            printf("\n");
+        }
+    }
+
+#endif
+
     return index;
 }
 
@@ -170,13 +190,14 @@ uint8_t ieee802154_frame_read(uint8_t *buf, ieee802154_frame_t *frame,
 
     index += 2;
 
-    switch(frame->fcf.dest_addr_m) {
+    switch (frame->fcf.dest_addr_m) {
         case (0): {
-            printf("fcf.dest_addr_m: pan identifier/address fields empty\n");
+            DEBUG("fcf.dest_addr_m: pan identifier/address fields empty\n");
             break;
         }
 
         case (2): {
+            /* read address in little-endian order */
             frame->dest_addr[0] = buf[index];
             frame->dest_addr[1] = buf[index + 1];
             index += 2;
@@ -184,14 +205,15 @@ uint8_t ieee802154_frame_read(uint8_t *buf, ieee802154_frame_t *frame,
         }
 
         case (3): {
-            frame->dest_addr[0] = buf[index];
-            frame->dest_addr[1] = buf[index + 1];
-            frame->dest_addr[2] = buf[index + 2];
-            frame->dest_addr[3] = buf[index + 3];
-            frame->dest_addr[4] = buf[index + 4];
-            frame->dest_addr[5] = buf[index + 5];
-            frame->dest_addr[6] = buf[index + 6];
-            frame->dest_addr[7] = buf[index + 7];
+            /* read address in network order */
+            frame->dest_addr[7] = buf[index];
+            frame->dest_addr[6] = buf[index + 1];
+            frame->dest_addr[5] = buf[index + 2];
+            frame->dest_addr[4] = buf[index + 3];
+            frame->dest_addr[3] = buf[index + 4];
+            frame->dest_addr[2] = buf[index + 5];
+            frame->dest_addr[1] = buf[index + 6];
+            frame->dest_addr[0] = buf[index + 7];
             index += 8;
             break;
         }
@@ -202,13 +224,14 @@ uint8_t ieee802154_frame_read(uint8_t *buf, ieee802154_frame_t *frame,
         index += 2;
     }
 
-    switch(frame->fcf.src_addr_m) {
+    switch (frame->fcf.src_addr_m) {
         case (0): {
-            printf("fcf.src_addr_m: pan identifier/address fields empty\n");
+            DEBUG("fcf.src_addr_m: pan identifier/address fields empty\n");
             break;
         }
 
         case (2): {
+            /* read address in little-endian order */
             frame->src_addr[0] = buf[index];
             frame->src_addr[1] = buf[index + 1];
             index += 2;
@@ -216,14 +239,15 @@ uint8_t ieee802154_frame_read(uint8_t *buf, ieee802154_frame_t *frame,
         }
 
         case (3): {
-            frame->src_addr[0] = buf[index];
-            frame->src_addr[1] = buf[index + 1];
-            frame->src_addr[2] = buf[index + 2];
-            frame->src_addr[3] = buf[index + 3];
-            frame->src_addr[4] = buf[index + 4];
-            frame->src_addr[5] = buf[index + 5];
-            frame->src_addr[6] = buf[index + 6];
-            frame->src_addr[7] = buf[index + 7];
+            /* read address in network order */
+            frame->src_addr[7] = buf[index];
+            frame->src_addr[6] = buf[index + 1];
+            frame->src_addr[5] = buf[index + 2];
+            frame->src_addr[4] = buf[index + 3];
+            frame->src_addr[3] = buf[index + 4];
+            frame->src_addr[2] = buf[index + 5];
+            frame->src_addr[1] = buf[index + 6];
+            frame->src_addr[0] = buf[index + 7];
             index += 8;
             break;
         }
@@ -236,6 +260,27 @@ uint8_t ieee802154_frame_read(uint8_t *buf, ieee802154_frame_t *frame,
     return hdrlen;
 }
 
+/* crc with lsb first */
+uint16_t ieee802154_frame_get_fcs(const uint8_t *frame, uint8_t frame_len)
+{
+    uint16_t r = 0;
+
+    for (uint8_t byte = 0; byte < frame_len; ++byte) {
+        r ^= frame[byte];
+
+        for (uint8_t bit = 8; bit > 0; --bit) {
+            if (r & 0x0001) {
+                r = (r >> 1) ^ IEEE_802154_FCS_POLY;
+            }
+            else {
+                r = (r >> 1);
+            }
+        }
+    }
+
+    return r;
+}
+
 void ieee802154_frame_print_fcf_frame(ieee802154_frame_t *frame)
 {
     printf("frame type: %02x\n"