139 static bool xfer_completeness_check(NRF_TWI_Type * p_twi, twi_control_block_t const * p_cb)  in xfer_completeness_check()  argument
147     if (p_cb->bytes_transferred != p_cb->curr_length)  in xfer_completeness_check()
183     twi_control_block_t * p_cb  = &m_cb[p_instance->drv_inst_idx];  in nrfx_twi_init()  local
186     if (p_cb->state != NRFX_DRV_STATE_UNINITIALIZED)  in nrfx_twi_init()
214     p_cb->handler         = event_handler;  in nrfx_twi_init()
215     p_cb->p_context       = p_context;  in nrfx_twi_init()
216     p_cb->int_mask        = 0;  in nrfx_twi_init()
217     p_cb->prev_suspend    = TWI_NO_SUSPEND;  in nrfx_twi_init()
218     p_cb->repeated        = false;  in nrfx_twi_init()
219     p_cb->busy            = false;  in nrfx_twi_init()
223         p_cb->hold_bus_uninit = p_config->hold_bus_uninit;  in nrfx_twi_init()
224         p_cb->skip_gpio_cfg   = p_config->skip_gpio_cfg;  in nrfx_twi_init()
239     p_cb->state = NRFX_DRV_STATE_INITIALIZED;  in nrfx_twi_init()
251     twi_control_block_t * p_cb = &m_cb[p_instance->drv_inst_idx];  in nrfx_twi_reconfigure()  local
253     if (p_cb->state == NRFX_DRV_STATE_UNINITIALIZED)  in nrfx_twi_reconfigure()
257     if (p_cb->busy)  in nrfx_twi_reconfigure()
262     p_cb->hold_bus_uninit = p_config->hold_bus_uninit;  in nrfx_twi_reconfigure()
270     twi_control_block_t * p_cb = &m_cb[p_instance->drv_inst_idx];  in nrfx_twi_uninit()  local
272     NRFX_ASSERT(p_cb->state != NRFX_DRV_STATE_UNINITIALIZED);  in nrfx_twi_uninit()
274     if (p_cb->handler)  in nrfx_twi_uninit()
284     if (!p_cb->skip_gpio_cfg && !p_cb->hold_bus_uninit)  in nrfx_twi_uninit()
290     p_cb->state = NRFX_DRV_STATE_UNINITIALIZED;  in nrfx_twi_uninit()
296     twi_control_block_t * p_cb = &m_cb[p_instance->drv_inst_idx];  in nrfx_twi_init_check()  local
298     return (p_cb->state != NRFX_DRV_STATE_UNINITIALIZED);  in nrfx_twi_init_check()
303     twi_control_block_t * p_cb = &m_cb[p_instance->drv_inst_idx];  in nrfx_twi_enable()  local
305     NRFX_ASSERT(p_cb->state == NRFX_DRV_STATE_INITIALIZED);  in nrfx_twi_enable()
310     p_cb->state = NRFX_DRV_STATE_POWERED_ON;  in nrfx_twi_enable()
316     twi_control_block_t * p_cb = &m_cb[p_instance->drv_inst_idx];  in nrfx_twi_disable()  local
318     NRFX_ASSERT(p_cb->state != NRFX_DRV_STATE_UNINITIALIZED);  in nrfx_twi_disable()
325     p_cb->state = NRFX_DRV_STATE_INITIALIZED;  in nrfx_twi_disable()
326     p_cb->busy = false;  in nrfx_twi_disable()
331                           twi_control_block_t   * p_cb)  in twi_send_byte()  argument
333     if (p_cb->bytes_transferred < p_cb->curr_length)  in twi_send_byte()
335         nrf_twi_txd_set(p_twi, p_cb->p_curr_buf[p_cb->bytes_transferred]);  in twi_send_byte()
339         if (p_cb->curr_tx_no_stop)  in twi_send_byte()
344         else if(TWI_FLAG_SUSPEND(p_cb->flags))  in twi_send_byte()
347             p_cb->prev_suspend = TWI_SUSPEND_TX;  in twi_send_byte()
359                              twi_control_block_t  * p_cb)  in twi_receive_byte()  argument
361     if (p_cb->bytes_transferred < p_cb->curr_length)  in twi_receive_byte()
363         p_cb->p_curr_buf[p_cb->bytes_transferred] = nrf_twi_rxd_get(p_twi);  in twi_receive_byte()
365         ++(p_cb->bytes_transferred);  in twi_receive_byte()
367         if ((p_cb->bytes_transferred == p_cb->curr_length - 1) && (!TWI_FLAG_SUSPEND(p_cb->flags)))  in twi_receive_byte()
371         else if (p_cb->bytes_transferred == p_cb->curr_length && (!TWI_FLAG_SUSPEND(p_cb->flags)))  in twi_receive_byte()
375         else if (p_cb->bytes_transferred == p_cb->curr_length && TWI_FLAG_SUSPEND(p_cb->flags))  in twi_receive_byte()
377             p_cb->prev_suspend = TWI_SUSPEND_RX;  in twi_receive_byte()
387                          twi_control_block_t    * p_cb)  in twi_transfer()  argument
403     if (p_cb->error)  in twi_transfer()
414         p_cb->error = true;  in twi_transfer()
421             ++(p_cb->bytes_transferred);  in twi_transfer()
428                 p_cb->error = true;  in twi_transfer()
432                 if (!twi_send_byte(p_twi, p_cb))  in twi_transfer()
447                 p_cb->error = true;  in twi_transfer()
451                 if (!twi_receive_byte(p_twi, p_cb))  in twi_transfer()
461         p_cb->prev_suspend = TWI_NO_SUSPEND;  in twi_transfer()
462         if (!p_cb->error)  in twi_transfer()
464             p_cb->error = !xfer_completeness_check(p_twi, p_cb);  in twi_transfer()
473                                         twi_control_block_t * p_cb)  in twi_tx_start_transfer()  argument
486     p_cb->bytes_transferred = 0;  in twi_tx_start_transfer()
487     p_cb->error             = false;  in twi_tx_start_transfer()
492     if (p_cb->prev_suspend != TWI_SUSPEND_TX)  in twi_tx_start_transfer()
497     (void)twi_send_byte(p_twi, p_cb);  in twi_tx_start_transfer()
499     if (p_cb->handler)  in twi_tx_start_transfer()
501         p_cb->int_mask = NRF_TWI_INT_STOPPED_MASK   |  in twi_tx_start_transfer()
506         nrf_twi_int_enable(p_twi, p_cb->int_mask);  in twi_tx_start_transfer()
511                twi_transfer(p_twi, p_cb))  in twi_tx_start_transfer()
516         if (p_cb->error)  in twi_tx_start_transfer()
542                                         twi_control_block_t * p_cb)  in twi_rx_start_transfer()  argument
554     p_cb->bytes_transferred = 0;  in twi_rx_start_transfer()
555     p_cb->error             = false;  in twi_rx_start_transfer()
557     if ((p_cb->curr_length == 1) && (!TWI_FLAG_SUSPEND(p_cb->flags)))  in twi_rx_start_transfer()
568     if (p_cb->prev_suspend != TWI_SUSPEND_RX)  in twi_rx_start_transfer()
573     if (p_cb->handler)  in twi_rx_start_transfer()
575         p_cb->int_mask = NRF_TWI_INT_STOPPED_MASK   |  in twi_rx_start_transfer()
579         nrf_twi_int_enable(p_twi, p_cb->int_mask);  in twi_rx_start_transfer()
584                twi_transfer(p_twi, p_cb))  in twi_rx_start_transfer()
589         if (p_cb->error)  in twi_rx_start_transfer()
613                            twi_control_block_t        * p_cb,  in twi_xfer()  argument
619     if ((p_cb->prev_suspend == TWI_SUSPEND_TX) && (p_xfer_desc->type == NRFX_TWI_XFER_RX))  in twi_xfer()
624     else if ((p_cb->prev_suspend == TWI_SUSPEND_RX) && (p_xfer_desc->type != NRFX_TWI_XFER_RX))  in twi_xfer()
633     if (p_cb->busy)  in twi_xfer()
635         nrf_twi_int_enable(p_twi, p_cb->int_mask);  in twi_xfer()
644         p_cb->busy = (TWI_FLAG_NO_HANDLER_IN_USE(flags)) ? false : true;  in twi_xfer()
647     p_cb->flags       = flags;  in twi_xfer()
648     p_cb->xfer_desc   = *p_xfer_desc;  in twi_xfer()
649     p_cb->curr_length = p_xfer_desc->primary_length;  in twi_xfer()
650     p_cb->p_curr_buf  = p_xfer_desc->p_primary_buf;  in twi_xfer()
655         p_cb->curr_tx_no_stop = ((p_xfer_desc->type == NRFX_TWI_XFER_TX) &&  in twi_xfer()
658         err_code = twi_tx_start_transfer(p_twi, p_cb);  in twi_xfer()
662         err_code = twi_rx_start_transfer(p_twi, p_cb);  in twi_xfer()
664     if (p_cb->handler == NULL)  in twi_xfer()
666         p_cb->busy = false;  in twi_xfer()
673     twi_control_block_t * p_cb = &m_cb[p_instance->drv_inst_idx];  in nrfx_twi_is_busy()  local
674     NRFX_ASSERT(p_cb->state != NRFX_DRV_STATE_UNINITIALIZED);  in nrfx_twi_is_busy()
676     return p_cb->busy;  in nrfx_twi_is_busy()
684     twi_control_block_t * p_cb = &m_cb[p_instance->drv_inst_idx];  in nrfx_twi_xfer()  local
686     NRFX_ASSERT(p_cb->state == NRFX_DRV_STATE_POWERED_ON);  in nrfx_twi_xfer()
691     NRFX_ASSERT( !((p_cb->handler == NULL) && (p_xfer_desc->type == NRFX_TWI_XFER_TXRX)));  in nrfx_twi_xfer()
692     NRFX_ASSERT( !((p_cb->handler == NULL) && (p_xfer_desc->type == NRFX_TWI_XFER_TXTX)));  in nrfx_twi_xfer()
705     err_code = twi_xfer((NRF_TWI_Type  *)p_instance->p_twi, p_cb, p_xfer_desc, flags);  in nrfx_twi_xfer()
726 static void irq_handler(NRF_TWI_Type * p_twi, twi_control_block_t * p_cb)  in irq_handler()  argument
728     NRFX_ASSERT(p_cb->handler);  in irq_handler()
730     if (twi_transfer(p_twi, p_cb))  in irq_handler()
735     if (!p_cb->error &&  in irq_handler()
736         ((p_cb->xfer_desc.type == NRFX_TWI_XFER_TXRX) ||  in irq_handler()
737          (p_cb->xfer_desc.type == NRFX_TWI_XFER_TXTX)) &&  in irq_handler()
738         p_cb->p_curr_buf == p_cb->xfer_desc.p_primary_buf)  in irq_handler()
740         p_cb->p_curr_buf      = p_cb->xfer_desc.p_secondary_buf;  in irq_handler()
741         p_cb->curr_length     = p_cb->xfer_desc.secondary_length;  in irq_handler()
742         p_cb->curr_tx_no_stop = (p_cb->flags & NRFX_TWI_FLAG_TX_NO_STOP);  in irq_handler()
743         p_cb->prev_suspend    = TWI_NO_SUSPEND;  in irq_handler()
745         if (p_cb->xfer_desc.type == NRFX_TWI_XFER_TXTX)  in irq_handler()
747             (void)twi_tx_start_transfer(p_twi, p_cb);  in irq_handler()
751             (void)twi_rx_start_transfer(p_twi, p_cb);  in irq_handler()
757         event.xfer_desc = p_cb->xfer_desc;  in irq_handler()
759         if (p_cb->error)  in irq_handler()
789         p_cb->busy = false;  in irq_handler()
791         if (!(TWI_FLAG_NO_HANDLER_IN_USE(p_cb->flags)) || p_cb->error)  in irq_handler()
793             p_cb->handler(&event, p_cb->p_context);  in irq_handler()