diff --git a/snippets/test1/test1.c b/snippets/test1/test1.c
index 8f26a32..0762121 100644
--- a/snippets/test1/test1.c
+++ b/snippets/test1/test1.c
@@ -63,64 +63,64 @@ const uint8_t MDR1_F_CY  = 0b10000000;
 volatile uint32_t ec = 0;
 
 void isr() {
-	ec++;
+  ec++;
 }
 
 void writeCmd(uint8_t c) {
-	uint8_t buf[1];
-	buf[0] = c;
-	wiringPiSPIDataRW(SPI_CHAN, buf, 1);
+  uint8_t buf[1];
+  buf[0] = c;
+  wiringPiSPIDataRW(SPI_CHAN, buf, 1);
 }
 
 void writeCmdData(uint8_t c, uint8_t d) {
-	uint8_t buf[2];
-	buf[0] = c;
-	buf[1] = d;
-	wiringPiSPIDataRW(SPI_CHAN, buf, 2);
+  uint8_t buf[2];
+  buf[0] = c;
+  buf[1] = d;
+  wiringPiSPIDataRW(SPI_CHAN, buf, 2);
 }
 
 uint8_t read8(uint8_t c) {
   uint8_t buf[2];
-	buf[0] = c;
+  buf[0] = c;
   wiringPiSPIDataRW(SPI_CHAN, buf, 2);
-	return buf[1];
+  return buf[1];
 }
 
 uint32_t read32(uint8_t c) {
-	uint8_t buf[5];
-	buf[0] = c;
-	wiringPiSPIDataRW(SPI_CHAN, buf, 5);
-	uint32_t r = ((uint32_t)buf[1] << 24) | ((uint32_t)buf[2] << 16) | ((uint32_t)buf[3] << 8) | ((uint32_t)buf[4]);
-	return r;
+  uint8_t buf[5];
+  buf[0] = c;
+  wiringPiSPIDataRW(SPI_CHAN, buf, 5);
+  uint32_t r = ((uint32_t)buf[1] << 24) | ((uint32_t)buf[2] << 16) | ((uint32_t)buf[3] << 8) | ((uint32_t)buf[4]);
+  return r;
 }
 
 void init() {
-	wiringPiSetupGpio();
+  wiringPiSetupGpio();
 
-	wiringPiSPISetup(SPI_CHAN, SPI_SPEED);
+  wiringPiSPISetup(SPI_CHAN, SPI_SPEED);
 
-	pinMode(CTRL_OUT, OUTPUT);
-	digitalWrite(CTRL_OUT, 0);
+  pinMode(CTRL_OUT, OUTPUT);
+  digitalWrite(CTRL_OUT, 0);
 
-	pinMode(INTR_IN, INPUT);
-	wiringPiISR(INTR_IN, INT_EDGE_FALLING, isr);
+  pinMode(INTR_IN, INPUT);
+  wiringPiISR(INTR_IN, INT_EDGE_FALLING, isr);
 }
 
 void initCounter() {
-	writeCmd(CMD_CLR | REG_STR);
-	writeCmd(CMD_CLR | REG_CNTR);
+  writeCmd(CMD_CLR | REG_STR);
+  writeCmd(CMD_CLR | REG_CNTR);
 }
 
 int main (void) {
-	init();
-	initCounter();
+  init();
+  initCounter();
 
-	while (1) {
-		uint8_t str = read8(CMD_RD | REG_STR);
-		uint32_t cntr = read32(CMD_RD | REG_CNTR);
+  while (1) {
+    uint8_t str = read8(CMD_RD | REG_STR);
+    uint32_t cntr = read32(CMD_RD | REG_CNTR);
 
-		printf("%02x %d %d\n", str, ec, cntr);
+    printf("%02x %d %d\n", str, ec, cntr);
 
-		sleep(1);
-	}
+    sleep(1);
+  }
 }