diff --git a/software/kernel/test.c b/software/kernel/test.c
index cd33b8f..0823a92 100644
--- a/software/kernel/test.c
+++ b/software/kernel/test.c
@@ -8,12 +8,8 @@
 #include <sys/stat.h>
 #include <unistd.h>
 
-static void fail(const char *msg) {
-  perror(msg);
-  exit(1);
-} 
-
-static void print_smi_settings(struct smi_settings *settings) {
+static void print_smi_settings(struct smi_settings *settings) 
+{
   printf("width: %d\n", settings->data_width);
   printf("pack: %c\n", settings->pack_data ? 'Y' : 'N');
   printf("read setup: %d, strobe: %d, hold: %d, pace: %d\n", settings->read_setup_time, settings->read_strobe_time, settings->read_hold_time, settings->read_pace_time);
@@ -23,65 +19,86 @@ static void print_smi_settings(struct smi_settings *settings) {
   printf("dma panic threshold read: %d, write: %d\n", settings->dma_panic_read_thresh, settings->dma_panic_write_thresh);
 }
 
-int main(int argc, char **argv) {
-  int count = 8;
-  int opt;
-  int fd = open("/dev/smi", O_RDWR);
-  if (fd < 0) fail("cant open");
-  struct smi_settings settings;
-  int ret = ioctl(fd, BCM2835_SMI_IOC_GET_SETTINGS, &settings);
-  if (ret != 0) fail("ioctl 1");
-  settings.read_setup_time = 10;
-  settings.read_strobe_time = 20;
-  settings.read_hold_time = 40;
-  settings.read_pace_time = 80;
-  bool writeMode = false;
+static void setup_settings (struct smi_settings *settings) 
+{
+  settings->read_setup_time = 1;
+  settings->read_strobe_time = 1;
+  settings->read_hold_time = 1;
+  settings->read_pace_time = 1;
+  settings->write_setup_time = 1;
+	settings->write_hold_time = 1;
+	settings->write_pace_time = 1;
+	settings->write_strobe_time = 1;
+  settings->data_width = SMI_WIDTH_8BIT;
+  settings->dma_enable = 1;
+  settings->pack_data = 1;
+  settings->dma_passthrough_enable = 1;
+}
 
-  while ((opt = getopt(argc, argv, "b:e:s:h:p:wE:S:H:P:")) != -1) {
-    switch (opt) {
-    case 'b':
-      count = atoi(optarg);
-      break;
-    case 'e':
-      settings.read_setup_time = atoi(optarg);
-      break;
-    case 's':
-      settings.read_strobe_time = atoi(optarg);
-      break;
-    case 'h':
-      settings.read_hold_time = atoi(optarg);
-      break;
-    case 'p':
-      settings.read_pace_time = atoi(optarg);
-      break;
-    case 'E':
-      settings.write_setup_time = atoi(optarg);
-      break;
-    case 'S':
-      settings.write_strobe_time = atoi(optarg);
-      break;
-    case 'H':
-      settings.write_hold_time = atoi(optarg);
-      break;
-    case 'P':
-      settings.write_pace_time = atoi(optarg);
-      break;
-    case 'w':
-      writeMode = true;
-      break;
-    }
+int main(int argc, char **argv) 
+{
+  int fd = open("/dev/smi", O_RDWR);
+  if (fd < 0) 
+  {
+    perror("cant open");
+    exit(1);
   }
 
+  struct smi_settings settings;
+
+  int ret = ioctl(fd, BCM2835_SMI_IOC_GET_SETTINGS, &settings);
+  if (ret != 0) 
+  {
+    perror("ioctl 1");
+    close (fd);
+    exit(1);
+  }
+
+  printf("Current settings:\n");
+  print_smi_settings(&settings);
+
+  setup_settings(&settings);
+
   ret = ioctl(fd, BCM2835_SMI_IOC_WRITE_SETTINGS, &settings);
-  if (ret != 0) fail("ioctl 2");
+  if (ret != 0) 
+  {
+    perror("ioctl 1");
+    close (fd);
+    exit(1);
+  }
+  
+  printf("\n\nNEW settings:\n");
   print_smi_settings(&settings);
-  uint16_t buffer[count];
-  if (writeMode) {
-    for (int i=0; i<count; i++) buffer[i] = i;
-    write(fd, buffer, count*2);
-  } else {
-    read(fd, buffer, count*2);
-    for (int i=0; i<count; i++) printf("%02x ", buffer[i]);
+
+
+  bool writeMode = false;
+  //    writeMode = true;
+
+  int count = 512;
+  uint32_t buffer[512];   // 512 samples
+  if (writeMode) 
+  {
+    for (int i=0; i<count; i++) 
+    {
+      buffer[i] = i;
+    }
+
+    write(fd, buffer, count*sizeof(uint32_t));
+  } 
+  else 
+  {
+    read(fd, buffer, count*sizeof(uint32_t));
+    
+    printf("\n\nread words:\n");
+    for (int i=0; i<count; i++) 
+    {
+      printf("%02x ", buffer[i]);
+    }
     puts("\n");
   }
+
+
+   close (fd);
+  return 0;
+
 }
\ No newline at end of file