style: enforce coding standard — headers, @brief on #define, Doxygen on statics, remove _ prefix, max 8 lines per function

0x0008_unitialized-variables-e/0x0008_unitialized-variables-e.c

@@ -1,5 +1,43 @@
-int main(void) {  
-    __asm__ volatile (  
+/**
+ * @file 0x0008_unitialized-variables-e.c
+ * @brief Blink LED using pure inline ARM assembly with direct register addresses
+ * @author Kevin Thomas
+ * @date 2025
+ *
+ * MIT License
+ *
+ * Copyright (c) 2025 Kevin Thomas
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * -----------------------------------------------------------------------------
+ *
+ * Blinks an LED on GPIO16 using pure inline ARM assembly. No SDK calls, no
+ * includes. Configures PADS_BANK0, IO_BANK0, and GPIO coprocessor via direct
+ * register addresses and mcrr instructions, with a busy-wait delay loop.
+ *
+ * Wiring:
+ *   GPIO16 -> LED anode (with current-limiting resistor to GND)
+ */
+
+int main(void) {
+    __asm__ volatile (
         //   gpio_init(LED_PIN);
         ///  gpio_set_dir(LED_PIN, GPIO_IN);
         //// gpioc_bit_oe_put(LED_PIN, GPIO_OUT);