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135
integration/nrfx/legacy/nrf_drv_spi.c
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135
integration/nrfx/legacy/nrf_drv_spi.c
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/**
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* Copyright (c) 2017 - 2020, Nordic Semiconductor ASA
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form, except as embedded into a Nordic
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* Semiconductor ASA integrated circuit in a product or a software update for
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* such product, must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* 4. This software, with or without modification, must only be used with a
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* Nordic Semiconductor ASA integrated circuit.
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*
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* 5. Any software provided in binary form under this license must not be reverse
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* engineered, decompiled, modified and/or disassembled.
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*
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* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include "nrf_drv_spi.h"
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#ifdef SPIM_PRESENT
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#define INSTANCE_COUNT SPIM_COUNT
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#else
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#define INSTANCE_COUNT SPI_COUNT
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#endif
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static nrf_drv_spi_evt_handler_t m_handlers[INSTANCE_COUNT];
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static void * m_contexts[INSTANCE_COUNT];
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#ifdef SPIM_PRESENT
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static void spim_evt_handler(nrfx_spim_evt_t const * p_event,
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void * p_context)
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{
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uint32_t inst_idx = (uint32_t)p_context;
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nrf_drv_spi_evt_t const event =
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{
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.type = (nrf_drv_spi_evt_type_t)p_event->type,
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.data =
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{
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.done =
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{
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.p_tx_buffer = p_event->xfer_desc.p_tx_buffer,
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.tx_length = p_event->xfer_desc.tx_length,
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.p_rx_buffer = p_event->xfer_desc.p_rx_buffer,
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.rx_length = p_event->xfer_desc.rx_length,
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}
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}
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};
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m_handlers[inst_idx](&event, m_contexts[inst_idx]);
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}
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#endif // SPIM_PRESENT
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#ifdef SPI_PRESENT
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static void spi_evt_handler(nrfx_spi_evt_t const * p_event,
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void * p_context)
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{
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uint32_t inst_idx = (uint32_t)p_context;
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nrf_drv_spi_evt_t const event =
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{
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.type = (nrf_drv_spi_evt_type_t)p_event->type,
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.data =
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{
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.done =
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{
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.p_tx_buffer = p_event->xfer_desc.p_tx_buffer,
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.tx_length = p_event->xfer_desc.tx_length,
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.p_rx_buffer = p_event->xfer_desc.p_rx_buffer,
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.rx_length = p_event->xfer_desc.rx_length,
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}
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}
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};
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m_handlers[inst_idx](&event, m_contexts[inst_idx]);
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}
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#endif // SPI_PRESENT
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ret_code_t nrf_drv_spi_init(nrf_drv_spi_t const * const p_instance,
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nrf_drv_spi_config_t const * p_config,
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nrf_drv_spi_evt_handler_t handler,
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void * p_context)
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{
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uint32_t inst_idx = p_instance->inst_idx;
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m_handlers[inst_idx] = handler;
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m_contexts[inst_idx] = p_context;
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ret_code_t result = 0;
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if (NRF_DRV_SPI_USE_SPIM)
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{
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#ifdef SPIM_PRESENT
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nrfx_spim_config_t config_spim = NRFX_SPIM_DEFAULT_CONFIG;
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config_spim.sck_pin = p_config->sck_pin;
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config_spim.mosi_pin = p_config->mosi_pin;
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config_spim.miso_pin = p_config->miso_pin;
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config_spim.ss_pin = p_config->ss_pin;
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config_spim.irq_priority = p_config->irq_priority;
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config_spim.orc = p_config->orc;
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config_spim.frequency = (nrf_spim_frequency_t)p_config->frequency;
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config_spim.mode = (nrf_spim_mode_t)p_config->mode;
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config_spim.bit_order = (nrf_spim_bit_order_t)p_config->bit_order;
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result = nrfx_spim_init(&p_instance->u.spim,
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&config_spim,
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handler ? spim_evt_handler : NULL,
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(void *)inst_idx);
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#endif
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}
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else if (NRF_DRV_SPI_USE_SPI)
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{
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result = nrfx_spi_init(&p_instance->u.spi,
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(nrfx_spi_config_t const *)p_config,
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handler ? spi_evt_handler : NULL,
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(void *)inst_idx);
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}
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return result;
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}
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