1 files changed, 151 insertions, 0 deletions
diff --git a/FreeRTOS/Demo/RISC-V_RV32_SiFive_HiFive1-RevB_FreedomStudio/bsp/install/include/metal/gpio.h b/FreeRTOS/Demo/RISC-V_RV32_SiFive_HiFive1-RevB_FreedomStudio/bsp/install/include/metal/gpio.h
new file mode 100644
index 000000000..513687dd7
--- /dev/null
+++ b/FreeRTOS/Demo/RISC-V_RV32_SiFive_HiFive1-RevB_FreedomStudio/bsp/install/include/metal/gpio.h
@@ -0,0 +1,151 @@
+/* Copyright 2019 SiFive, Inc */
+/* SPDX-License-Identifier: Apache-2.0 */
+
+#ifndef METAL__GPIO_H
+#define METAL__GPIO_H
+
+#include <metal/compiler.h>
+
+/*!
+ * @file gpio.h
+ * @brief API for manipulating general-purpose input/output
+ */
+
+struct metal_gpio;
+
+struct __metal_gpio_vtable {
+    int (*disable_input)(struct metal_gpio *, long pins);
+    long (*output)(struct metal_gpio *);
+    int (*enable_output)(struct metal_gpio *, long pins);
+    int (*output_set)(struct metal_gpio *, long value);
+    int (*output_clear)(struct metal_gpio *, long value);
+    int (*output_toggle)(struct metal_gpio *, long value);
+    int (*enable_io)(struct metal_gpio *, long pins, long dest);
+};
+
+/*!
+ * @struct metal_gpio
+ * @brief The handle for a GPIO interface
+ */
+struct metal_gpio {
+	const struct __metal_gpio_vtable *vtable;
+};
+
+/*!
+ * @brief Get a GPIO device handle
+ * @param device_num The GPIO device index
+ * @return The GPIO device handle, or NULL if there is no device at that index
+ */
+struct metal_gpio *metal_gpio_get_device(int device_num);
+
+/*!
+ * @brief Disable input on a pin
+ * @param gpio The handle for the GPIO interface
+ * @param pin The pin number indexed from 0
+ * @return 0 if the input is successfully disabled
+ */
+inline int metal_gpio_disable_input(struct metal_gpio *gpio, int pin) {
+    if(!gpio) {
+	return 1;
+    }
+
+    return gpio->vtable->disable_input(gpio, (1 << pin));
+}
+
+/*!
+ * @brief Enable output on a pin
+ * @param gpio The handle for the GPIO interface
+ * @param pin The pin number indexed from 0
+ * @return 0 if the output is successfully enabled
+ */
+inline int metal_gpio_enable_output(struct metal_gpio *gpio, int pin) {
+    if(!gpio) {
+	return 1;
+    }
+
+    return gpio->vtable->enable_output(gpio, (1 << pin));
+}
+
+/*!
+ * @brief Set the output value of a GPIO pin
+ * @param gpio The handle for the GPIO interface
+ * @param pin The pin number indexed from 0
+ * @param value The value to set the pin to
+ * @return 0 if the output is successfully set
+ */
+inline int metal_gpio_set_pin(struct metal_gpio *gpio, int pin, int value) {
+    if(!gpio) {
+	return 1;
+    }
+
+    if(value == 0) {
+	return gpio->vtable->output_clear(gpio, (1 << pin));
+    } else {
+	return gpio->vtable->output_set(gpio, (1 << pin));
+    }
+}
+
+/*!
+ * @brief Get the value of the GPIO pin
+ * @param gpio The handle for the GPIO interface
+ * @param pin The pin number indexed from 0
+ * @return The value of the GPIO pin
+ */
+inline int metal_gpio_get_pin(struct metal_gpio *gpio, int pin) {
+    if(!gpio) {
+	return 0;
+    }
+
+    long value = gpio->vtable->output(gpio);
+
+    if(value & (1 << pin)) {
+	return 1;
+    } else {
+	return 0;
+    }
+}
+
+/*!
+ * @brief Clears the value of the GPIO pin
+ * @param gpio The handle for the GPIO interface
+ * @param pin The pin number indexed from 0
+ * @return 0 if the pin is successfully cleared
+ */
+inline int metal_gpio_clear_pin(struct metal_gpio *gpio, int pin) {
+    if(!gpio) {
+	return 1;
+    }
+
+    return gpio->vtable->output_clear(gpio, (1 << pin));
+}
+
+/*!
+ * @brief Toggles the value of the GPIO pin
+ * @param gpio The handle for the GPIO interface
+ * @param pin The pin number indexed from 0
+ * @return 0 if the pin is successfully toggled
+ */
+inline int metal_gpio_toggle_pin(struct metal_gpio *gpio, int pin) {
+    if(!gpio) {
+	return 1;
+    }
+
+    return gpio->vtable->output_toggle(gpio, (1 << pin));
+}
+
+/*!
+ * @brief Enables and sets the pinmux for a GPIO pin
+ * @param gpio The handle for the GPIO interface
+ * @param pin The bitmask for the pin to enable pinmux on
+ * @param io_function The IO function to set
+ * @return 0 if the pinmux is successfully set
+ */
+inline int metal_gpio_enable_pinmux(struct metal_gpio *gpio, int pin, int io_function) {
+    if(!gpio) {
+	return 1;
+    }
+
+    return gpio->vtable->enable_io(gpio, (1 << pin), (io_function << pin));
+}
+
+#endif