feat: config manager

src/config.h

@@ -0,0 +1,34 @@
+//
+// Created by awalol on 2026/5/4.
+//
+
+#ifndef DS5_BRIDGE_CONFIG_H
+#define DS5_BRIDGE_CONFIG_H
+
+#include <cstdint>
+
+struct __attribute__((packed)) Config_body {
+    float haptics_gain; // [1.0,2.0]
+    float speaker_volume; // [1.0,2.0]
+    uint8_t disable_inactive_disconnect; // bool: 0 disable,1 enable
+    uint8_t disable_pico_led; // bool
+    uint8_t polling_rate_mode; // 0: 250Hz,1: 500Hz,2: instant
+    uint8_t haptics_buffer_length; // [16,255]
+};
+
+struct __attribute__((packed)) Config {
+    uint32_t magic;
+    uint16_t version;
+    uint32_t crc32; // Config_body crc32, only calc and verify when save
+    uint16_t size;  // Config_body size
+    Config_body body;
+};
+
+void config_default();
+void config_load();
+bool config_save();
+const Config_body& get_config();
+void set_config(const uint8_t *new_config, const uint16_t len);
+void config_valid();
+
+#endif //DS5_BRIDGE_CONFIG_H