diff --git a/main.cpp b/main.cpp
index 894b289a..099ef01f 100644
--- a/main.cpp
+++ b/main.cpp
@@ -21,8 +21,8 @@ int main(int argc, char *argv[]) {
 	piCout << "open" << ok;
 	int r = spi.write(PIByteArray::fromHex("0000000000000000000000000000000000000000000000000000000000000000"));
 	piCout << "write" << r;
-	r = spi.readForTime(10).toHex();
-	piCout << "read" << r;
+	PIByteArray ba = spi.readForTime(10);
+	piCout << "read" << ba.toHex();
 	return 0;
 }
 
diff --git a/src_main/io/pispi.cpp b/src_main/io/pispi.cpp
index 45a37197..e75ce18a 100644
--- a/src_main/io/pispi.cpp
+++ b/src_main/io/pispi.cpp
@@ -38,7 +38,7 @@ bool PISPI::openDevice() {
 #ifndef WINDOWS
 	int ret = 0;
 	piCoutObj << "open device" << path();
-/*	PRIVATE->fd = ::open(path().dataAscii(), O_RDWR);
+	PRIVATE->fd = ::open(path().dataAscii(), O_RDWR);
 	if (PRIVATE->fd < 0) {piCoutObj << "can't open device";return false;}
 	piCoutObj << "set mode" << spi_mode;
 	ret = ioctl(PRIVATE->fd, SPI_IOC_WR_MODE, &spi_mode);
@@ -52,7 +52,7 @@ bool PISPI::openDevice() {
 	piCoutObj << "SPI open" << path() << "speed:" << spi_speed/1000 << "KHz" << "mode" << spi_mode << "bits" << spi_bits;
 	PRIVATE->spi_ioc_tr.delay_usecs = 0;
 	PRIVATE->spi_ioc_tr.speed_hz = 0;
-	PRIVATE->spi_ioc_tr.bits_per_word = spi_bits;*/
+	PRIVATE->spi_ioc_tr.bits_per_word = spi_bits;
 	return true;
 #else
 	piCoutObj << "PISPI not implemented on windows";
@@ -90,8 +90,8 @@ int PISPI::writeDevice(const void * data, int max_size) {
 		memcpy(tx_buf.data(), data, max_size);
 		int ret;
 		piCoutObj << "write" << max_size << tx_buf.size();
-		/*ret = ioctl(PRIVATE->fd, SPI_IOC_MESSAGE(1), &PRIVATE->spi_ioc_tr);
-		if (ret < 1) {piCoutObj << "can't send spi message" << ret; return -1;}*/
+		ret = ioctl(PRIVATE->fd, SPI_IOC_MESSAGE(1), &PRIVATE->spi_ioc_tr);
+		if (ret < 1) {piCoutObj << "can't send spi message" << ret; return -1;}
 		recv_buf.append(rx_buf);
 		if (recv_buf.size_s() > threadedReadBufferSize()) recv_buf.resize(threadedReadBufferSize());
 		return max_size;