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79 lines
2.8 KiB
C
79 lines
2.8 KiB
C
/*
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* Copyright (c) 2012 - 2018, Nordic Semiconductor ASA
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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 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 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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*
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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 from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, 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 OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef NRF_TEMP_H__
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#define NRF_TEMP_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_temp_hal TEMP HAL
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* @{
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* @ingroup nrf_temp temperature_example
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* @brief Temperature module init and read functions.
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*/
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#define MASK_SIGN (0x00000200UL) //!< MASK_SIGN
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#define MASK_SIGN_EXTENSION (0xFFFFFC00UL) //!< MASK_SIGN_EXTENSION
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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) ? (int32_t)(NRF_TEMP->TEMP | MASK_SIGN_EXTENSION) :
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(NRF_TEMP->TEMP);
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}
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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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