system/dev/gpio/gpio-test/gpio-test.h

// Copyright 2019 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#pragma once

#include <ddktl/device.h>
#include <ddktl/protocol/gpio.h>
#include <fbl/array.h>
#include <lib/zx/interrupt.h>

#include <threads.h>

namespace gpio_test {

class GpioTest;
using GpioTestType = ddk::Device<GpioTest>;

class GpioTest : public GpioTestType {
public:
public:
    explicit GpioTest(zx_device_t* parent)
        : GpioTestType(parent) {}

    static zx_status_t Create(void* ctx, zx_device_t* parent);

    // Device protocol implementation.
    void DdkRelease();

private:
    DISALLOW_COPY_ASSIGN_AND_MOVE(GpioTest);

    // GPIO indices
    enum {
        GPIO_LED,
        GPIO_BUTTON,
    };

    zx_status_t Init();
    int OutputThread();
    int InterruptThread();

    fbl::Array<ddk::GpioProtocolClient> gpios_;

    uint32_t gpio_count_;
    thrd_t output_thread_;
    thrd_t interrupt_thread_;
    bool done_;
    zx::interrupt interrupt_;
};

} // namespace gpio_test