1 files changed, 55 insertions, 0 deletions
diff --git a/FreeRTOS/Demo/RISC-V_RV32_SiFive_HiFive1_FreedomStudio/freedom-metal/src/drivers/sifive_gpio-buttons.c b/FreeRTOS/Demo/RISC-V_RV32_SiFive_HiFive1_FreedomStudio/freedom-metal/src/drivers/sifive_gpio-buttons.c
new file mode 100644
index 000000000..fbb6c92a7
--- /dev/null
+++ b/FreeRTOS/Demo/RISC-V_RV32_SiFive_HiFive1_FreedomStudio/freedom-metal/src/drivers/sifive_gpio-buttons.c
@@ -0,0 +1,55 @@
+/* Copyright 2018 SiFive, Inc */
+/* SPDX-License-Identifier: Apache-2.0 */
+
+#include <metal/machine/platform.h>
+
+#ifdef METAL_SIFIVE_GPIO_BUTTONS
+
+#include <string.h>
+#include <metal/drivers/riscv_cpu.h>
+#include <metal/drivers/sifive_gpio-buttons.h>
+#include <metal/machine.h>
+
+int  __metal_driver_button_exist (struct metal_button *button, char *label)
+{
+    if (strcmp(__metal_driver_sifive_gpio_button_label(button), label) == 0) {
+        return 1;
+    }
+    return 0;
+}
+
+struct metal_interrupt *
+__metal_driver_button_interrupt_controller(struct metal_button *button)
+{
+    return __metal_driver_sifive_gpio_button_interrupt_controller(button);
+}
+
+int __metal_driver_button_get_interrupt_id(struct metal_button *button)
+{
+    int irq, max_irq;
+    struct metal_interrupt *irc;
+
+    irq = __metal_driver_sifive_gpio_button_interrupt_line(button);
+    irc =  __metal_driver_sifive_gpio_button_interrupt_controller(button);
+
+    if (irc != NULL) {
+        max_irq = _metal_interrupt_command_request(irc,
+                                                   METAL_MAX_INTERRUPT_GET,
+                                                   NULL);
+
+        if (irq < max_irq) {
+            return _metal_interrupt_command_request(irc,
+                                                 METAL_INDEX_INTERRUPT_GET,
+                                                 (void *)&irq);
+        }
+    }
+    return METAL_INTERRUPT_ID_LCMX;
+}
+
+__METAL_DEFINE_VTABLE(__metal_driver_vtable_sifive_button) = {
+    .button_vtable.button_exist   = __metal_driver_button_exist,
+    .button_vtable.interrupt_controller = __metal_driver_button_interrupt_controller,
+    .button_vtable.get_interrupt_id = __metal_driver_button_get_interrupt_id,
+};
+
+#endif