80 lines
3.0 KiB
C
80 lines
3.0 KiB
C
/*
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* Copyright (c) 2014, Texas Instruments Incorporated - http://www.ti.com/
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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
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*---------------------------------------------------------------------------*/
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/**
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* \addtogroup sensortag-cc26xx-sensor-common
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* @{
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*
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* \file
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* Utilities common among SensorTag sensors
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*/
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/*---------------------------------------------------------------------------*/
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#include "sensor-common.h"
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#include "board-i2c.h"
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/*---------------------------------------------------------------------------*/
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/* Data to use when an error occurs */
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#define ERROR_DATA 0xCC
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/*---------------------------------------------------------------------------*/
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static uint8_t buffer[32];
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/*---------------------------------------------------------------------------*/
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bool
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sensor_common_read_reg(uint8_t addr, uint8_t *buf, uint8_t len)
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{
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return board_i2c_write_read(&addr, 1, buf, len);
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}
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/*---------------------------------------------------------------------------*/
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bool
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sensor_common_write_reg(uint8_t addr, uint8_t *buf, uint8_t len)
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{
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uint8_t i;
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uint8_t *p = buffer;
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/* Copy address and data to local buffer for burst write */
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*p++ = addr;
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for(i = 0; i < len; i++) {
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*p++ = *buf++;
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}
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len++;
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/* Send data */
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return board_i2c_write(buffer, len);
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}
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/*---------------------------------------------------------------------------*/
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void
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sensor_common_set_error_data(uint8_t *buf, uint8_t len)
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{
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while(len > 0) {
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len--;
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buf[len] = ERROR_DATA;
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}
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}
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/*---------------------------------------------------------------------------*/
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/** @} */
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