Add initial board, HAL, and executor modules

main/04_hal/stepper_driver/aw8646.h

@@ -0,0 +1,27 @@
+#ifndef AW8646_DRIVER_H
+#define AW8646_DRIVER_H
+
+#include "stepper_driver.h"
+#include "io_expansion_board.h"
+#include "esp_log.h"
+
+class Aw8646Driver : public StepperDriver
+{
+public:
+    explicit Aw8646Driver(IOExpansionBoard &ioExp);
+    virtual ~Aw8646Driver() = default;
+
+    esp_err_t Init() override;
+    esp_err_t Enable(bool enable) override;
+    esp_err_t SetDirection(bool dir) override;
+    esp_err_t Sleep(bool sleep) override;
+    esp_err_t SetMicrosteps(int microsteps) override;
+
+private:
+    esp_err_t SetTriLevelPin(uint8_t port_reg, uint8_t config_reg, uint8_t pin, int state);
+
+    IOExpansionBoard &io_expansion_;
+    const char* TAG = "Aw8646Driver";
+};
+
+#endif // AW8646_DRIVER_H