92 lines
3.3 KiB
C
92 lines
3.3 KiB
C
/**
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* Copyright (c) 2012 - 2017, 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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#ifndef NRF_TEMP_H__
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#define NRF_TEMP_H__
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#include "nrf.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @defgroup nrf_temperature TEMP (temperature) abstraction
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* @{
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* @ingroup nrf_drivers temperature_example
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* @brief Temperature module init and read functions.
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*
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*/
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/**@cond NO_DOXYGEN */
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#define MASK_SIGN (0x00000200UL)
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#define MASK_SIGN_EXTENSION (0xFFFFFC00UL)
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/**
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* @brief Function for preparing the temp module for temperature measurement.
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*
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* This function initializes the TEMP module and writes to the hidden configuration register.
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*/
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static __INLINE void nrf_temp_init(void)
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{
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/**@note Workaround for PAN_028 rev2.0A anomaly 31 - TEMP: Temperature offset value has to be manually loaded to the TEMP module */
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*(uint32_t *) 0x4000C504 = 0;
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}
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/**
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* @brief Function for reading temperature measurement.
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*
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* The function reads the 10 bit 2's complement value and transforms it to a 32 bit 2's complement value.
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*/
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static __INLINE int32_t nrf_temp_read(void)
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{
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/**@note Workaround for PAN_028 rev2.0A anomaly 28 - TEMP: Negative measured values are not represented correctly */
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return ((NRF_TEMP->TEMP & MASK_SIGN) != 0) ? (NRF_TEMP->TEMP | MASK_SIGN_EXTENSION) : (NRF_TEMP->TEMP);
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}
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/**@endcond */
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/** @} */
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#ifdef __cplusplus
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}
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#endif
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#endif
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