diff --git a/main.cpp b/main.cpp
index 3c493785..ad962c55 100644
--- a/main.cpp
+++ b/main.cpp
@@ -8,10 +8,11 @@ int main(int argc, char *argv[]) {
 	cli.addArgument("dev", true);
 	cli.addArgument("speed", true);
 	if (!cli.hasArgument("dev")) {
+		piCout << "no device";
 		return 0;
 	}
 	PIString path = cli.argumentValue("dev");
-	PISPI spi(path);
+	PISPI spi(path, 1000000);
 	if (cli.hasArgument("speed")) spi.setSpeed(cli.argumentValue("speed").toInt());
 	piCout << "open" << spi.open();
 	piCout << "write" << spi.write(PIByteArray::fromHex("0000000000000000000000000000000000000000000000000000000000000000"));
diff --git a/src_main/io/pispi.cpp b/src_main/io/pispi.cpp
index 294b3883..3cb2177f 100644
--- a/src_main/io/pispi.cpp
+++ b/src_main/io/pispi.cpp
@@ -38,14 +38,14 @@ bool PISPI::openDevice() {
 #ifndef WINDOWS
 	int ret = 0;
 	PRIVATE->fd = ::open(path().dataAscii(), O_RDWR);
-	if (PRIVATE->fd < 0) return false;
+	if (PRIVATE->fd < 0) {piCoutObj << "can't open device";return false;}
 	ret = ioctl(PRIVATE->fd, SPI_IOC_WR_MODE, &spi_mode);
-	if (ret == -1) return false;
+	if (ret == -1) {piCoutObj << "can't set spi write mode";return false;}
 	ret = ioctl(PRIVATE->fd, SPI_IOC_WR_BITS_PER_WORD, &spi_bits);
-	if (ret == -1) return false;
+	if (ret == -1) {piCoutObj << "can't set bits per word";return false;}
 	ret = ioctl(PRIVATE->fd, SPI_IOC_WR_MAX_SPEED_HZ, &spi_speed);
-	if (ret == -1) return false;
-	piCout << "SPI open" << path() << "speed:" << spi_speed/1000 << "KHz" << "mode" << spi_mode << "bits" << spi_bits;
+	if (ret == -1) {piCoutObj << "can't set max write speed hz";return false;}
+	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 = spi_speed;
 	PRIVATE->spi_ioc_tr.bits_per_word = spi_bits;
@@ -86,7 +86,7 @@ int PISPI::writeDevice(const void * data, int max_size) {
 		memcpy(tx_buf.data(), data, max_size);
 		int ret;
 		ret = ioctl(PRIVATE->fd, SPI_IOC_MESSAGE(1), &PRIVATE->spi_ioc_tr);
-		if (ret < 1) {piCout << "init can't send spi message" << ret; return -1;}
+		if (ret < 1) {piCoutObj << "can't send spi message" << ret; return -1;}
 		recv_buf.append(rx_buf);
 		return max_size;
 	}