153 lines
2.6 KiB
C++
153 lines
2.6 KiB
C++
/*
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* \brief Test of GPIO driver
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* \author Ivan Loskutov <ivan.loskutov@ksyslabs.org>
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* \date 2012-06-23
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*/
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/*
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* Copyright (C) 2012 Ksys Labs LLC
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* Copyright (C) 2012-2015 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#ifndef _GPIO_TEST_H_
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#define _GPIO_TEST_H_
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/* Genode includes */
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#include <base/printf.h>
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#include <base/signal.h>
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#include <gpio_session/connection.h>
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#include <irq_session/client.h>
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#include <util/mmio.h>
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using namespace Genode;
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class Gpio_test
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{
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public:
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enum {
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LED1_GPIO = 7,
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LED2_GPIO = 8,
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BUTTON_GPIO = 121,
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GPIO4_IRQ = 32 + 32,
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};
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private:
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Gpio::Connection _gpio_led1;
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Gpio::Connection _gpio_led2;
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Gpio::Connection _gpio_button;
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Gpio::Connection _gpio_irq4;
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Signal_receiver sig_rec;
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Signal_context sig_ctx;
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public:
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Gpio_test();
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void wait_for_signal() {
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sig_rec.wait_for_signal(); }
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bool polling_test();
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bool irq_test();
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};
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Gpio_test::Gpio_test()
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: _gpio_led1(LED1_GPIO),
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_gpio_led2(LED2_GPIO),
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_gpio_button(BUTTON_GPIO),
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_gpio_irq4(GPIO4_IRQ)
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{
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/* initialize GPIO_121 */
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_gpio_button.debouncing(31*100);
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}
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bool Gpio_test::polling_test()
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{
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printf("---------- Polling test ----------\n");
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printf("\nPush and hold button...\n");
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_gpio_led1.write(true);
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_gpio_led2.write(false);
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volatile bool gpio_state;
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do {
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gpio_state = _gpio_button.read();
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} while (gpio_state);
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printf("OK\n");
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_gpio_led1.write(false);
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_gpio_led2.write(true);
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printf("\nRelease button...\n");
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do {
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gpio_state = _gpio_button.read();
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} while (!gpio_state);
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printf("OK\n");
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return true;
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}
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bool Gpio_test::irq_test()
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{
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printf("---------- IRQ test ----------\n");
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{
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Genode::Irq_session_client
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irq(_gpio_button.irq_session(Gpio::Session::FALLING_EDGE));
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irq.sigh(sig_rec.manage(&sig_ctx));
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/*
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* Before any IRQs will be delivered to us, we have to signalize
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* that we are ready to handle them by calling 'ack_irq()'.
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*/
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irq.ack_irq();
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_gpio_led1.write(true);
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_gpio_led2.write(false);
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printf("\nPush and hold button...\n");
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wait_for_signal();
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irq.ack_irq();
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}
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printf("OK\n");
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{
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Genode::Irq_session_client
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irq(_gpio_button.irq_session(Gpio::Session::RISING_EDGE));
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irq.sigh(sig_rec.manage(&sig_ctx));
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_gpio_led1.write(false);
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_gpio_led2.write(true);
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printf("\nRelease button...\n");
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wait_for_signal();
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irq.ack_irq();
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}
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printf("OK\n");
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{
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Genode::Irq_session_client
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irq(_gpio_button.irq_session(Gpio::Session::HIGH_LEVEL));
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irq.sigh(sig_rec.manage(&sig_ctx));
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}
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return true;
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}
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#endif /* _GPIO_TEST_H_ */
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