diff --git a/mbtk/test/others/mbtk_spi_write.c b/mbtk/test/others/mbtk_spi_write.c
index 19a0a44..be15742 100755
--- a/mbtk/test/others/mbtk_spi_write.c
+++ b/mbtk/test/others/mbtk_spi_write.c
@@ -44,7 +44,7 @@
 *  Created on: 2013-5-28
 *      Author: lzy
 */
-static const char *device = "/dev/spidev1.0";
+static char device[64] = {0};
 static uint8_t mode = 0; /* SPI通信使用全双工，设置CPOL＝0，CPHA＝0。 */
 static uint8_t bits = 8; /* ８ｂiｔｓ读写，MSB first。*/
 static uint32_t speed = 12 * 1000 * 1000;/* 设置12M传输速度 */
@@ -291,7 +291,18 @@
 int main(int argc, char *argv[])
 {
     int ret = 0;
- 
+
+    if(argc == 2)
+    {
+        memset(device, 0x0, 64);
+        memcpy(device, argv[1], strlen(argv[1]));
+        printf("device: %s\n", device);
+    }
+    else
+    {
+        printf("format: mbtk_spi_write <dev>\n");
+        return -1;
+    }
     ret = SPI_Open();
     if (ret)
         return ret;