diff --git a/.clang-format b/.clang-format
new file mode 100644
index 0000000..13bedd8
--- /dev/null
+++ b/.clang-format
@@ -0,0 +1,16 @@
+BasedOnStyle: LLVM
+IndentWidth: 4                 # Use 4 spaces for indentation
+TabWidth: 4                    # Tab width is also 4 spaces
+UseTab: Never                  # Always use spaces instead of tabs
+ColumnLimit: 120                # Wrap lines after 80 characters
+AllowShortLoopsOnASingleLine: true
+AlwaysBreakTemplateDeclarations: true
+BreakConstructorInitializers: BeforeComma
+AlignConsecutiveDeclarations:
+  Enabled:         true 
+  AcrossEmptyLines: false
+  AcrossComments:  false
+  AlignCompound:   false
+  AlignFunctionPointers: false
+  PadOperators:    false
+AlignConsecutiveMacros: true
diff --git a/.gitignore b/.gitignore
index 1c3c380..099dd79 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@ bin/
 *.bin
 generated.*.ld
 compile_commands.json
+tags
diff --git a/main.c b/main.c
index f821803..831d333 100644
--- a/main.c
+++ b/main.c
@@ -2,31 +2,30 @@
 #include <libopencm3/stm32/rcc.h>
 
 static void clock_setup(void) {
-  // Use external 8 MHz HSE and PLL to 72 MHz
-  rcc_clock_setup_pll(&rcc_hse_configs[RCC_CLOCK_HSE8_72MHZ]);
-  rcc_periph_clock_enable(RCC_GPIOC);
+    // Use external 8 MHz HSE and PLL to 72 MHz
+    rcc_clock_setup_pll(&rcc_hse_configs[RCC_CLOCK_HSE8_72MHZ]);
+    rcc_periph_clock_enable(RCC_GPIOC);
 }
 
 static void gpio_setup(void) {
-  // gpio_mode_setup(GPIOC, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO13);
-  gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ, GPIO_CNF_OUTPUT_PUSHPULL,
-                GPIO13);
+    // gpio_mode_setup(GPIOC, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO13);
+    gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ, GPIO_CNF_OUTPUT_PUSHPULL, GPIO13);
 }
 
 static void delay(volatile uint32_t count) {
-  while (count-- > 0) {
-    __asm__("nop");
-  }
+    while (count-- > 0) {
+        __asm__("nop");
+    }
 }
 
 int main(void) {
-  clock_setup();
-  gpio_setup();
+    clock_setup();
+    gpio_setup();
 
-  while (1) {
-    gpio_toggle(GPIOC, GPIO13); // On Blue Pill: LED is on PC13
-    delay(10000000);            // Crude delay loop
-  }
+    while (1) {
+        gpio_toggle(GPIOC, GPIO13); // On Blue Pill: LED is on PC13
+        delay(10000000);            // Crude delay loop
+    }
 
-  return 0;
+    return 0;
 }
diff --git a/sub_init.sh b/sub_init.sh
new file mode 100644
index 0000000..33a408b
--- /dev/null
+++ b/sub_init.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+make clean
+make -C libopencm3 clean
+
+bear -- make -C libopencm3 -j$(nproc)
+bear --append -- make -j$(nproc)
+
+ctags -R .