72 lines
2.7 KiB
C
72 lines
2.7 KiB
C
/**
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* Copyright (c) 2016 - 2019, 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 "max9850.h"
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#include <string.h>
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ret_code_t max9850_init(max9850_config_t const * p_max9850)
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{
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ret_code_t ret = NRF_SUCCESS;
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ret = nrf_drv_twi_init(&p_max9850->twi, &p_max9850->twi_cfg, NULL, NULL);
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if (ret != NRF_SUCCESS)
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{
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return ret;
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}
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nrf_drv_twi_enable(&p_max9850->twi);
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/*Probe device*/
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uint8_t rx[] = {0};
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ret = nrf_drv_twi_rx(&p_max9850->twi, p_max9850->twi_addr, rx, sizeof(rx));
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if (ret != NRF_SUCCESS)
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{
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return ret;
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}
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uint8_t regs[sizeof(max9850_regmap_t) + 1];
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regs[0] = 0x00;
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memcpy(regs + 1, &p_max9850->regmap, sizeof(max9850_regmap_t));
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/*Write configuration*/
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return nrf_drv_twi_tx(&p_max9850->twi, p_max9850->twi_addr, regs, sizeof(regs), false);
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}
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