示例#1
0
ret_code_t nrf_drv_lpcomp_init(const nrf_drv_lpcomp_config_t * p_config,
                               lpcomp_events_handler_t   events_handler)
{
    if (m_state != NRF_DRV_STATE_UNINITIALIZED)
    { // LPCOMP driver is already initialized
        return NRF_ERROR_INVALID_STATE;
    }

    if (p_config == NULL)
    {
        p_config = &m_default_config;
    }

#if PERIPHERAL_RESOURCE_SHARING_ENABLED
    if (nrf_drv_common_per_res_acquire(NRF_LPCOMP, IRQ_HANDLER_NAME) != NRF_SUCCESS)
    {
        return NRF_ERROR_BUSY;
    }
#endif

    nrf_lpcomp_configure(&(p_config->hal) );

    if (events_handler)
    {
        m_lpcomp_events_handler = events_handler;
    }
    else
    {
        return NRF_ERROR_INVALID_PARAM;
    }

    nrf_lpcomp_input_select(p_config->input);

    switch (p_config->hal.detection)
    {
        case NRF_LPCOMP_DETECT_UP:
            nrf_lpcomp_int_enable(LPCOMP_INTENSET_UP_Msk);
            break;

        case NRF_LPCOMP_DETECT_DOWN:
            nrf_lpcomp_int_enable(LPCOMP_INTENSET_DOWN_Msk);
            break;

        case NRF_LPCOMP_DETECT_CROSS:
            nrf_lpcomp_int_enable(LPCOMP_INTENSET_CROSS_Msk);
            break;

        default:
            break;
    }
    nrf_lpcomp_shorts_enable(NRF_LPCOMP_SHORT_READY_SAMPLE_MASK);

    nrf_drv_common_irq_enable(LPCOMP_IRQn, p_config->interrupt_priority);

    m_state = NRF_DRV_STATE_INITIALIZED;

    return NRF_SUCCESS;
}
示例#2
0
ret_code_t nrf_drv_lpcomp_init(const nrf_drv_lpcomp_config_t * p_config,
                               lpcomp_events_handler_t   events_handler)
{
    ASSERT(p_config);
    ret_code_t err_code;

    if (m_state != NRF_DRV_STATE_UNINITIALIZED)
    { // LPCOMP driver is already initialized
        err_code = NRF_ERROR_INVALID_STATE;
        NRF_LOG_WARNING("Function: %s, error code: %s.\r\n", (uint32_t)__func__, (uint32_t)ERR_TO_STR(err_code));
        return err_code;
    }

#if NRF_MODULE_ENABLED(PERIPHERAL_RESOURCE_SHARING)
    if (nrf_drv_common_per_res_acquire(NRF_LPCOMP, IRQ_HANDLER_NAME) != NRF_SUCCESS)
    {
        err_code = NRF_ERROR_BUSY;
        NRF_LOG_WARNING("Function: %s, error code: %s.\r\n", (uint32_t)__func__, (uint32_t)ERR_TO_STR(err_code));
        return err_code;
    }
#endif

    nrf_lpcomp_configure(&(p_config->hal) );

    if (events_handler)
    {
        m_lpcomp_events_handler = events_handler;
    }
    else
    {
        err_code = NRF_ERROR_INVALID_PARAM;
        NRF_LOG_WARNING("Function: %s, error code: %s.\r\n", (uint32_t)__func__, (uint32_t)ERR_TO_STR(err_code));
        return err_code;
    }

    nrf_lpcomp_input_select(p_config->input);

    switch (p_config->hal.detection)
    {
        case NRF_LPCOMP_DETECT_UP:
            nrf_lpcomp_int_enable(LPCOMP_INTENSET_UP_Msk);
            break;

        case NRF_LPCOMP_DETECT_DOWN:
            nrf_lpcomp_int_enable(LPCOMP_INTENSET_DOWN_Msk);
            break;

        case NRF_LPCOMP_DETECT_CROSS:
            nrf_lpcomp_int_enable(LPCOMP_INTENSET_CROSS_Msk);
            break;

        default:
            break;
    }
    nrf_lpcomp_shorts_enable(NRF_LPCOMP_SHORT_READY_SAMPLE_MASK);

    nrf_drv_common_irq_enable(LPCOMP_IRQn, p_config->interrupt_priority);

    m_state = NRF_DRV_STATE_INITIALIZED;

    err_code = NRF_SUCCESS;
    NRF_LOG_INFO("Function: %s, error code: %s.\r\n", (uint32_t)__func__, (uint32_t)ERR_TO_STR(err_code));
    return err_code;
}