1 files changed, 59 insertions, 0 deletions
diff --git a/FreeRTOS/Demo/RISC-V_RV32_SiFive_HiFive1_FreedomStudio/bsp/install/include/metal/button.h b/FreeRTOS/Demo/RISC-V_RV32_SiFive_HiFive1_FreedomStudio/bsp/install/include/metal/button.h
new file mode 100644
index 000000000..0c26f435a
--- /dev/null
+++ b/FreeRTOS/Demo/RISC-V_RV32_SiFive_HiFive1_FreedomStudio/bsp/install/include/metal/button.h
@@ -0,0 +1,59 @@
+/* Copyright 2018 SiFive, Inc */
+/* SPDX-License-Identifier: Apache-2.0 */
+
+#ifndef METAL__BUTTON_H
+#define METAL__BUTTON_H
+
+/*!
+ * @file button.h
+ * API for interfacing with physical buttons
+ */
+
+#include <metal/interrupt.h>
+
+struct metal_button;
+
+struct metal_button_vtable {
+    int (*button_exist)(struct metal_button *button, char *label);
+    struct metal_interrupt* (*interrupt_controller)(struct metal_button *button);
+    int (*get_interrupt_id)(struct metal_button *button);
+};
+
+/*!
+ * @brief A button device handle
+ *
+ * A `struct metal_button` is an implementation-defined object which represents
+ * a button on a development board.
+ */
+struct metal_button {
+    const struct metal_button_vtable *vtable;
+};
+
+/*!
+ * @brief Get a reference to a button
+ *
+ * @param label The DeviceTree label for the button
+ * @return A handle for the button
+ */
+struct metal_button* metal_button_get(char *label);
+
+
+/*!
+ * @brief Get the interrupt controller for a button
+ *
+ * @param button The handle for the button
+ * @return A pointer to the interrupt controller responsible for handling
+ * button interrupts.
+ */
+inline struct metal_interrupt*
+    metal_button_interrupt_controller(struct metal_button *button) { return button->vtable->interrupt_controller(button); }
+
+/*!
+ * @brief Get the interrupt id for a button
+ *
+ * @param button The handle for the button
+ * @return The interrupt id corresponding to a button.
+ */
+inline int metal_button_get_interrupt_id(struct metal_button *button) { return button->vtable->get_interrupt_id(button); }
+
+#endif