Audit-clean C standard across all 5 cb challenges: fix 3 functions over 8 exec lines; rebuild bins; update CB-0x03 and CB-0x05 guides; verify all guides against new bins

0x001aa_cb/include/gpio_ctrl.h

@@ -0,0 +1,63 @@
+/**
+ * @file gpio_ctrl.h
+ * @brief Operation Iron Net Firmware
+ * @author Kevin Thomas
+ * @date 2026
+ *
+ * MIT License
+ * Copyright (c) 2026 Kevin Thomas
+ */
+
+#ifndef GPIO_CTRL_H
+#define GPIO_CTRL_H
+
+#include <stdbool.h>
+
+#define PAYLOAD_PIN     18
+#define LED_RED_PIN     16
+#define LED_GREEN_PIN   17
+#define TAMPER_PIN      15
+
+/**
+ * @brief Initialize the status LEDs, payload, and tamper pins.
+ * @param void No parameters.
+ * @return void No return value.
+ */
+void init_gpio(void);
+
+/**
+ * @brief Drive the armed indication LEDs (red on, green off).
+ * @param void No parameters.
+ * @return void No return value.
+ */
+void set_led_armed(void);
+
+/**
+ * @brief Drive the authorized indication LEDs (green on, red off).
+ * @param void No parameters.
+ * @return void No return value.
+ */
+void set_led_authorized(void);
+
+/**
+ * @brief Drive the tamper flash indication on the red LED.
+ * @param state True to turn the red LED on, false to turn it off.
+ * @return void No return value.
+ */
+void set_led_tamper_flash(bool state);
+
+/**
+ * @brief Read the enclosure tamper loop state.
+ * @param void No parameters.
+ * @return true when the tamper wire is intact, false when cut.
+ */
+bool is_tamper_wire_intact(void);
+
+/**
+ * @brief Pulse the payload marker output to deploy the marker.
+ * @param void No parameters.
+ * @return void No return value.
+ */
+void payload_deploy(void);
+
+#endif // GPIO_CTRL_H