diff --git a/utils/makecsiparams/Android.mk b/utils/makecsiparams/Android.mk
new file mode 100644
index 0000000..b812a20
--- /dev/null
+++ b/utils/makecsiparams/Android.mk
@@ -0,0 +1,18 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VAR)
+
+LOCAL_SRC_FILES := \
+	makecsiparams.c \
+	bcmwifi_channels.c
+LOCAL_MODULE := makecsiparams
+LOCAL_MODULE_FILENAME := makecsiparams
+
+LOCAL_CFLAGS += -std=c99
+LOCAL_CFLAGS += -fPIE
+LOCAL_LDFLAGS += -fPIE -pie
+LOCAL_C_INCLUDES += ./include
+
+AL_MODEL_PATH := $(TARGET_OUT_OPTIONAL_EXCUABLES)
+
+include $(BUILD_EXECUTABLE)
diff --git a/utils/makecsiparams/Application.mk b/utils/makecsiparams/Application.mk
new file mode 100644
index 0000000..150788a
--- /dev/null
+++ b/utils/makecsiparams/Application.mk
@@ -0,0 +1,3 @@
+APP_FLOATFORM := anroid-20
+APP_BUILD_SCRIPT := Android.mk
+APP_ABI := armeabi
diff --git a/utils/makecsiparams/README.md b/utils/makecsiparams/README.md
index 7d4596a..bc035e6 100644
--- a/utils/makecsiparams/README.md
+++ b/utils/makecsiparams/README.md
@@ -17,3 +17,19 @@ Usage: makecsiparams [OPTION...]
                 without it is enforced automatically)
    -r           generate raw output (no base64)
 ```
+
+### Buid And Install makecsiparams for Nexus5
+1. Set ndk-build path       
+```
+export PATH=$PATH:{android-ndk-r11c path}
+```
+2. Build command    
+```
+cd utils/makecsiparams
+ndk-build NDK_APPLICATION_MK=`pwd`/Application.mk NDK_PROJECT_PATH=`pwd`
+```
+3. Install    
+```
+make install
+```
+
diff --git a/utils/makecsiparams/makecsiparams.c b/utils/makecsiparams/makecsiparams.c
index 15809c8..0539fd0 100644
--- a/utils/makecsiparams/makecsiparams.c
+++ b/utils/makecsiparams/makecsiparams.c
@@ -4,14 +4,69 @@
 #include <stdint.h>
 #include <string.h>
 #include <netinet/ether.h>
+
 #include <net/ethernet.h>
-/*
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <net/ethernet.h>
-*/
 #include "bcmwifi_channels.h"
 
+//start ether_aton.c
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+static inline int
+xdigit (char c) {
+    unsigned d;
+    d = (unsigned)(c-'0');
+    if (d < 10) return (int)d;
+    d = (unsigned)(c-'a');
+    if (d < 6) return (int)(10+d);
+    d = (unsigned)(c-'A');
+    if (d < 6) return (int)(10+d);
+    return -1;
+}
+/*
+ * Convert Ethernet address in the standard hex-digits-and-colons to binary
+ * representation.
+ * Re-entrant version (GNU extensions)
+ */
+struct ether_addr *
+ether_aton_r (const char *asc, struct ether_addr * addr)
+{
+    int i, val0, val1;
+    for (i = 0; i < ETHER_ADDR_LEN; ++i) {
+        val0 = xdigit(*asc);
+        asc++;
+        if (val0 < 0)
+            return NULL;
+        val1 = xdigit(*asc);
+        asc++;
+        if (val1 < 0)
+            return NULL;
+        addr->ether_addr_octet[i] = (u_int8_t)((val0 << 4) + val1);
+        if (i < ETHER_ADDR_LEN - 1) {
+            if (*asc != ':')
+                return NULL;
+            asc++;
+        }
+    }
+    if (*asc != '\0')
+        return NULL;
+    return addr;
+}
+/*
+ * Convert Ethernet address in the standard hex-digits-and-colons to binary
+ * representation.
+ */
+struct ether_addr *
+ether_aton (const char *asc)
+{
+    static struct ether_addr addr;
+    return ether_aton_r(asc, &addr);
+}
+
+//end ether_aton.c
+
+
 void st16le (uint16_t value, uint16_t *addr)
 {
     uint8_t *_addr = (uint8_t *) addr;
@@ -150,7 +205,6 @@ int main (int argc, char *argv[]) {
                             fprintf (stderr, "Only %d mac addresses can be given\n", MAX_MAC_ADDRESS);
                             goto finish_error;
                         }
-
                         ea = ether_aton (split);
                         if (ea == NULL) {
                             fprintf (stderr, "Invalid mac address\n");