Function efm32_hw_keys_init

bsp/efm32/dev_keys.c:265–315

/ * @brief * Initialize keys related hardware and register joystic device to kernel * * @details * * @note * ******************************************************************************/

 *
 ******************************************************************************/
void efm32_hw_keys_init(void)
{
    /* Configure joystick interrupt pin */
    GPIO_PinModeSet(KEYS_INT_PORT, KEYS_INT_PIN, gpioModeInputPullFilter, 1);

    /* Enable joystick interrupt */
    GPIO_IntConfig(KEYS_INT_PORT, KEYS_INT_PIN, true, true, true);

    efm32_irq_hook_init_t hook;
    hook.type       = efm32_irq_type_gpio;
    hook.unit       = KEYS_INT_PIN;
    hook.cbFunc     = efm32_keys_isr;
    hook.userPtr    = RT_NULL;
    efm32_irq_hook_register(&hook);

    if ((rt_uint8_t)KEYS_INT_PIN % 2)
    {
        NVIC_ClearPendingIRQ(GPIO_ODD_IRQn);
        NVIC_SetPriority(GPIO_ODD_IRQn, EFM32_IRQ_PRI_DEFAULT);
        NVIC_EnableIRQ(GPIO_ODD_IRQn);
    }
    else
    {
        NVIC_ClearPendingIRQ(GPIO_EVEN_IRQn);
        NVIC_SetPriority(GPIO_EVEN_IRQn, EFM32_IRQ_PRI_DEFAULT);
        NVIC_EnableIRQ(GPIO_EVEN_IRQn);
    }

    /* Enable DVK joystick interrupt */
    DVK_enableInterrupt(BC_INTEN_JOYSTICK);

    rt_timer_init(&joy.timer,
        "joy_tmr",
        efm32_keys_timer_isr,
        RT_NULL,
        KEYS_POLL_TIME,
        RT_TIMER_FLAG_PERIODIC);

    joy_dev.init        = efm32_keys_init;
    joy_dev.open        = RT_NULL;
    joy_dev.close       = RT_NULL;
    joy_dev.read        = RT_NULL;
    joy_dev.write       = RT_NULL;
    joy_dev.control     = RT_NULL;
    joy_dev.user_data   = (void *)&joy;

    /* register joy stick device */
    rt_device_register(&joy_dev, "joy", RT_DEVICE_FLAG_RDWR);

    keys_debug("Keys: H/W init OK!\n");
}

#endif /* defined(EFM32_USING_KEYS) */
/***************************************************************************//**