C++ (Cpp) nrf_twi_shorts_clear Examples

Example #1

File: nrf_drv_twi.c Project: BlueSkyGjj/nRF52

/**
 * @brief Function for prepering shortcut register.
 *
 * @param[in] p_instance      TWI.
 */
static void txrx_shorts_set_task_start(volatile nrf_drv_twi_t const * const p_instance)
{
    uint32_t short_mask;
    volatile transfer_t * p_transfer = &(m_cb[p_instance->instance_id].transfer);

    nrf_twi_shorts_clear(p_instance->p_reg,
                         NRF_TWI_SHORTS_BB_SUSPEND_MASK | NRF_TWI_SHORTS_BB_STOP_MASK);

    // if the last one and no pending transfer prepare to wait for stopped event
    if (((p_transfer->count + 1) == p_transfer->length) && p_transfer->xfer_pending == false)
    {
        short_mask = NRF_TWI_SHORTS_BB_STOP_MASK;

        p_transfer->end_event = NRF_TWI_EVENTS_STOPPED;
        nrf_twi_event_clear(p_instance->p_reg, p_transfer->end_event);

        if (m_handlers[p_instance->instance_id])
        {
            nrf_twi_int_disable(p_instance->p_reg, p_transfer->end_int);
            p_transfer->end_int   = NRF_TWI_INT_STOPPED_MASK;
            nrf_twi_int_enable(p_instance->p_reg, p_transfer->end_int);
        }

        state_machine(p_instance, TO_STOP);
    }
    else
    {
        short_mask = NRF_TWI_SHORTS_BB_SUSPEND_MASK;
    }

    nrf_twi_shorts_set(p_instance->p_reg, short_mask);
    nrf_twi_tasks_t prev_task = p_transfer->task;
    p_transfer->task = NRF_TWI_TASKS_RESUME;
    nrf_twi_task_set(p_instance->p_reg, prev_task);
}

Example #2

File: nrf_drv_twi.c Project: brycenguyen/BleLedControl

void nrf_drv_twi_uninit(nrf_drv_twi_t const * const p_instance)
{
    ASSERT(m_cb[p_instance->instance_id].state != NRF_DRV_STATE_UNINITIALIZED);

    if (m_handlers[p_instance->instance_id])
    {
        nrf_drv_common_irq_disable(p_instance->irq);
    }
    nrf_drv_twi_disable(p_instance);
    nrf_twi_shorts_clear(p_instance->p_reg, DISABLE_MASK);

    m_cb[p_instance->instance_id].state = NRF_DRV_STATE_UNINITIALIZED;
}