diff --git a/app/src/main/cpp/NrsecPort.cpp b/app/src/main/cpp/NrsecPort.cpp
index 4187768..a290915 100644
--- a/app/src/main/cpp/NrsecPort.cpp
+++ b/app/src/main/cpp/NrsecPort.cpp
@@ -154,7 +154,7 @@ void NrsecPort::RcvData(uint8_t*txbuf, uint8_t*buf, int len)
 	for (i = 0; i < len; i++)
 	{
 		retval = spi_transfer(txbuf, buf + i, 1);
-		__android_log_print(ANDROID_LOG_INFO, TAG_SPI, "RcvData data[%d]=%x", i, *(buf + i));
+		// __android_log_print(ANDROID_LOG_INFO, TAG_SPI, "RcvData data[%d]=%x", i, *(buf + i));
 	}
 }
 
diff --git a/app/src/main/cpp/SpiPort.cpp b/app/src/main/cpp/SpiPort.cpp
index 00593d6..fdb2293 100644
--- a/app/src/main/cpp/SpiPort.cpp
+++ b/app/src/main/cpp/SpiPort.cpp
@@ -40,18 +40,27 @@ void SpiPort::Close()
 
 int SpiPort::spi_transfer(unsigned char *txbuf, unsigned char *rxbuf, int bytes)
 {
-    struct spi_ioc_transfer    xfer[2];
-
     int    status;
 
+#if 0
+    struct spi_ioc_transfer    xfer[2];
     memset(xfer, 0, sizeof(xfer));
-
     xfer[0].tx_buf = (__u64)txbuf;
     xfer[0].rx_buf = (__u64)rxbuf;
     xfer[0].len = bytes;
     xfer[0].delay_usecs = 2;
 
     status = ioctl(m_fd, SPI_IOC_MESSAGE(1), xfer);
+#else
+    struct spi_ioc_transfer    xfer;
+    memset(&xfer, 0, sizeof(xfer));
+    xfer.tx_buf = (__u64)txbuf;
+    xfer.rx_buf = (__u64)rxbuf;
+    xfer.len = bytes;
+    xfer.delay_usecs = 2;
+
+    status = ioctl(m_fd, SPI_IOC_MESSAGE(1), &xfer);
+#endif
     if (status < 0)
     {
         perror("SPI_IOC_MESSAGE");