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/crypto.h

@@ -0,0 +1,26 @@
+/**
+ * @file crypto.h
+ * @brief Lightweight rolling cipher interface for Operation Iron Net
+ * @author Kevin Thomas
+ * @date 2026
+ *
+ * MIT License
+ * Copyright (c) 2026 Kevin Thomas
+ */
+
+#ifndef CRYPTO_H
+#define CRYPTO_H
+
+#include <stdint.h>
+#include <stddef.h>
+
+#define TOKEN_LEN 8
+
+/**
+ * @brief Decrypt the rolling strike authorization token into a buffer.
+ * @param dest Pointer to buffer receiving the decrypted token bytes.
+ * @return void No return value.
+ */
+void decrypt_auth_token(uint8_t *dest);
+
+#endif /* CRYPTO_H */

0x001aa_cb/include/dht11.h

@@ -10,14 +10,33 @@
 
 #ifndef DHT11_H
 #define DHT11_H
+
 #include <stdint.h>
+#include <stdbool.h>
+
+#define DHT11_PIN 14
+
 typedef struct {
     uint8_t humidity_int;
     uint8_t humidity_dec;
     uint8_t temp_int;
     uint8_t temp_dec;
     uint8_t checksum;
+    bool valid;
 } dht11_data_t;
+
+/**
+ * @brief Initialize the DHT11 data pin and idle the sensor high.
+ * @param void No parameters.
+ * @return void No return value.
+ */
 void dht11_init(void);
+
+/**
+ * @brief Perform a single-wire DHT11 read into the reading cache.
+ * @param void No parameters.
+ * @return dht11_data_t* Pointer to the current sensor reading.
+ */
 dht11_data_t* dht11_read(void);
-#endif
+
+#endif // DHT11_H

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

0x001aa_cb/include/logic.h

@@ -10,5 +10,26 @@
 
 #ifndef LOGIC_H
 #define LOGIC_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#define STATE_ENV_ARMED       0x01
+#define STATE_ENV_AUTHORIZED  0x03
+#define STATE_ENV_LOCKOUT     0xFF
+
+/**
+ * @brief Initialize the strike logic, token, radio, and feedback.
+ * @param void No parameters.
+ * @return void No return value.
+ */
+void init_strike_controller(void);
+
+/**
+ * @brief Evaluate the environment and fire the payload when authorized.
+ * @param void No parameters.
+ * @return void No return value.
+ */
 void evaluate_environment(void);
-#endif
+
+#endif // LOGIC_H

0x001aa_cb/include/lora.h

@@ -0,0 +1,64 @@
+// MIT License
+//
+// Copyright (c) 2026 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.
+//
+// Author:  Kevin Thomas
+// Email:   kevin@mytechnotalent.com
+// GitHub:  https://github.com/mytechnotalent
+// File:    lora.h
+// Desc:    Declares UART1 interface for the REYAX RYLR998 LoRa transceiver.
+// Created: 2026
+
+#ifndef LORA_H
+#define LORA_H
+
+#include <stdbool.h>
+#include <stddef.h>
+#include "hardware/uart.h"
+
+#define LORA_UART     uart1
+#define LORA_BAUD     9600
+#define LORA_TX_PIN   8
+#define LORA_RX_PIN   9
+
+/**
+ * @brief Initialize UART1 and configure the RYLR998 radio parameters.
+ * @param void No parameters.
+ * @return void No return value.
+ */
+void init_lora(void);
+
+/**
+ * @brief Transmit a message over the LoRa link to the base station.
+ * @param msg Null-terminated message string to transmit.
+ * @return void No return value.
+ */
+void lora_send(const char *msg);
+
+/**
+ * @brief Poll the UART receive buffer for a complete LoRa packet.
+ * @param payload_out Buffer receiving the extracted payload string.
+ * @param max_len Capacity of payload_out in bytes.
+ * @return true when a payload was extracted, false otherwise.
+ */
+bool lora_poll_packet(char *payload_out, size_t max_len);
+
+#endif // LORA_H