diff --git a/apps/01_blinky_button/src/main.c b/apps/01_blinky_button/src/main.c
index 2a21f46..afd069d 100644
--- a/apps/01_blinky_button/src/main.c
+++ b/apps/01_blinky_button/src/main.c
@@ -41,7 +41,6 @@ static const struct gpio_dt_spec button =
     GPIO_DT_SPEC_GET(DT_ALIAS(sw0), gpios);
 #endif    
 
-
 int main(void) {
 
 	bool led_state = true;
diff --git a/apps/02_uart/src/main.c b/apps/02_uart/src/main.c
index 479ce11..6139050 100644
--- a/apps/02_uart/src/main.c
+++ b/apps/02_uart/src/main.c
@@ -45,8 +45,8 @@ static void uart_rx_isr(const struct device *dev, void *user_data) {
 	}
 }
 
-int main(void)
-{
+int main(void) {
+	
 	uint32_t cnt = 0;
 	uint8_t ch;
 	int rc;
diff --git a/apps/03_adc_pa1_poll/src/main.c b/apps/03_adc_pa1_poll/src/main.c
index 0cd18f0..d41b613 100644
--- a/apps/03_adc_pa1_poll/src/main.c
+++ b/apps/03_adc_pa1_poll/src/main.c
@@ -6,7 +6,6 @@
 #include <zephyr/drivers/uart.h>
 #include <zephyr/drivers/adc.h>
 
-
 #define ADC_NODE DT_NODELABEL(adc1)
 
 #if !DT_NODE_HAS_STATUS(ADC_NODE, okay)
@@ -34,9 +33,8 @@ static struct adc_sequence seq = {
     .resolution  = 12,  // 12-bit
 };
 
-
-int main(void)
-{
+int main(void) {
+    
     if(!device_is_ready(adc_dev)) {
         return 0;
     }
diff --git a/apps/04_adc_pa1_pa4_pb0_poll/src/main.c b/apps/04_adc_pa1_pa4_pb0_poll/src/main.c
index 7c5d322..aabc12e 100644
--- a/apps/04_adc_pa1_pa4_pb0_poll/src/main.c
+++ b/apps/04_adc_pa1_pa4_pb0_poll/src/main.c
@@ -6,7 +6,6 @@
 #include <zephyr/drivers/uart.h>
 #include <zephyr/drivers/adc.h>
 
-
 #define ADC_NODE DT_NODELABEL(adc1)
 
 #if !DT_NODE_HAS_STATUS(ADC_NODE, okay)
@@ -19,7 +18,6 @@ static const struct device *const adc_dev =
 static uint16_t sample;
 
 // Channels Configuration: PA1(IN1), PA4(IN4), PB0(IN8)
-
 static struct adc_channel_cfg ch1_cfg = {
     .gain             = ADC_GAIN_1,
     .reference        = ADC_REF_INTERNAL,
@@ -69,9 +67,8 @@ static int read_one(uint8_t ch, uint16_t *out) {
 
 }
 
-
-int main(void)
-{
+int main(void) {
+    
     if(!device_is_ready(adc_dev)) {
         return 0;
     }
diff --git a/apps/05_button_exti_irq/src/main.c b/apps/05_button_exti_irq/src/main.c
index 9cda78a..92628e6 100644
--- a/apps/05_button_exti_irq/src/main.c
+++ b/apps/05_button_exti_irq/src/main.c
@@ -6,7 +6,6 @@
 #include <zephyr/drivers/uart.h>
 #include <zephyr/drivers/adc.h>
 
-
 #if !DT_NODE_HAS_STATUS(DT_ALIAS(sw0), okay)
 #error "Board does not define alias sw0. Add a boad overlay"
 #endif
@@ -16,7 +15,6 @@ static const struct gpio_dt_spec button =
 
 static struct gpio_callback button_cb;
 
-
 static void button_isr(const struct device *port, 
                        struct gpio_callback *cb, 
                        gpio_port_pins_t pins)
@@ -34,9 +32,8 @@ static void button_isr(const struct device *port,
 
 }
 
+int main(void) {
 
-int main(void)
-{
     if(!device_is_ready(button.port)) {
         return 0;
     }
@@ -49,7 +46,6 @@ int main(void)
     gpio_init_callback(&button_cb, button_isr, BIT(button.pin));
     gpio_add_callback(button.port, &button_cb);
 
-
     if(gpio_pin_interrupt_configure_dt(&button, GPIO_INT_EDGE_BOTH) != 0) {
         return 0;
     }
@@ -57,9 +53,7 @@ int main(void)
     printk("\r\n[EXTI] Button pin interrupt is ready. Press button\r\n");
 
 	while (1) {
-
 		k_sleep(K_FOREVER);
-
 	}
 
 	return 0;
diff --git a/apps/06_adc_pa1_irq/src/main.c b/apps/06_adc_pa1_irq/src/main.c
index 3eb1576..fb67c99 100644
--- a/apps/06_adc_pa1_irq/src/main.c
+++ b/apps/06_adc_pa1_irq/src/main.c
@@ -6,7 +6,6 @@
 #include <zephyr/drivers/uart.h>
 #include <zephyr/drivers/adc.h>
 
-
 #define ADC_NODE DT_NODELABEL(adc1)
 #define ADC_SAMPLE_PERIOD K_MSEC(50)
 
@@ -25,10 +24,8 @@ static enum adc_action adc_cb(const struct device *dev,
 
 static K_WORK_DELAYABLE_DEFINE(adc_sample_work, adc_sample_work_handler);
 
-
 static uint16_t sample;
 
-
 static struct adc_sequence_options seq_opts = {
     .interval_us     = 0, // Let driver decide
     .extra_samplings = 0, // One-shot, resubmit work continuously
@@ -37,7 +34,6 @@ static struct adc_sequence_options seq_opts = {
 
 };
 
-
 // Channel Configuration
 static struct adc_channel_cfg ch1_cfg = {
     .gain             = ADC_GAIN_1,
@@ -47,7 +43,7 @@ static struct adc_channel_cfg ch1_cfg = {
     .differential     = 0,
 };
 
-
+// Sequence Configuration
 static struct adc_sequence seq = {
     .channels    = BIT(1), // Channel bitmap
     .buffer      = &sample,
@@ -56,7 +52,6 @@ static struct adc_sequence seq = {
     .options     = &seq_opts
 };
 
-
 static enum adc_action adc_cb(const struct device *dev,
                               const struct adc_sequence *sequence,
                               uint16_t sampling_index)
@@ -69,7 +64,6 @@ static enum adc_action adc_cb(const struct device *dev,
     return ADC_ACTION_FINISH;
 }
 
-
 static void adc_sample_work_handler(struct k_work *work) 
 {
     ARG_UNUSED(work);
@@ -86,9 +80,8 @@ static void adc_sample_work_handler(struct k_work *work)
     (void)k_work_reschedule(&adc_sample_work, ADC_SAMPLE_PERIOD);
 }
 
+int main(void) {
 
-int main(void)
-{
     if(!device_is_ready(adc_dev)) {
         return 0;
     }