Rework radar system

data_acq_and_processing/common_cpp/hardware/include/h7992_minimal_driver.hpp

@@ -0,0 +1,50 @@
+#pragma once
+
+#include <cstdint>
+#include <string>
+
+#include "run_config.hpp"
+
+namespace radar::drivers {
+
+/**
+ * @brief Runtime settings for the H7992 GPIO switch driver.
+ */
+struct H7992MinimalDriverSettings {
+    std::string name{};
+    config::DriverMode mode = config::DriverMode::Native;
+    std::uint32_t positions = 4;
+    std::uint32_t default_position = 0;
+    std::string gpio_chip = "/dev/gpiochip0";
+    std::int32_t pin_a = 17;
+    std::int32_t pin_b = 27;
+};
+
+/**
+ * @brief Minimal H7992 implementation for fast position switching.
+ *
+ * Native mode uses Linux GPIO character-device API (uAPI v2).
+ * Mock mode keeps state in memory without touching hardware.
+ */
+class H7992MinimalDriver {
+  public:
+    explicit H7992MinimalDriver(H7992MinimalDriverSettings settings);
+    ~H7992MinimalDriver();  // Leaves RF path safe even if close() was skipped.
+
+    void open();
+    void close();
+    void switch_to(std::uint32_t position);
+
+  private:
+    void open_native();
+    void close_native();
+    void switch_native(std::uint32_t position);
+
+    H7992MinimalDriverSettings settings_{};
+    bool is_open_ = false;
+    std::uint32_t current_position_ = 0;
+    int chip_fd_ = -1;
+    int line_fd_ = -1;
+};
+
+}  // namespace radar::drivers