Implement native ESP-IDF radar firmware

main/radar_service.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "esp_err.h"
+
+#define RADAR_SERVICE_MAX_TARGETS 3
+
+typedef struct {
+    bool valid;
+    uint32_t id;
+    float x_mm;
+    float y_mm;
+    float speed_cm_s;
+    uint16_t resolution_mm;
+    uint32_t age_ms;
+} radar_target_view_t;
+
+typedef struct {
+    bool sensor_online;
+    uint8_t target_count;
+    uint32_t frame_count;
+    uint32_t invalid_frame_count;
+    uint32_t last_frame_age_ms;
+    radar_target_view_t targets[RADAR_SERVICE_MAX_TARGETS];
+} radar_snapshot_t;
+
+esp_err_t radar_service_init(void);
+void radar_service_get_snapshot(radar_snapshot_t *snapshot);