shoes/yj/work/19.主从一体串口/modules/nrfx/hal/nrf_temp.h

/**
 * Copyright (c) 2012 - 2019, Nordic Semiconductor ASA
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form, except as embedded into a Nordic
 *    Semiconductor ASA integrated circuit in a product or a software update for
 *    such product, must reproduce the above copyright notice, this list of
 *    conditions and the following disclaimer in the documentation and/or other
 *    materials provided with the distribution.
 *
 * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * 4. This software, with or without modification, must only be used with a
 *    Nordic Semiconductor ASA integrated circuit.
 *
 * 5. Any software provided in binary form under this license must not be reverse
 *    engineered, decompiled, modified and/or disassembled.
 *
 * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#ifndef NRF_TEMP_H__
#define NRF_TEMP_H__

#include <nrfx.h>

#ifdef __cplusplus
extern "C" {
#endif

/**
* @defgroup nrf_temp_hal TEMP HAL
* @{
* @ingroup nrf_temp temperature_example
* @brief   Temperature module init and read functions.
*/

#define MASK_SIGN           (0x00000200UL)
#define MASK_SIGN_EXTENSION (0xFFFFFC00UL)

/**
 * @brief Function for preparing the temp module for temperature measurement.
 *
 * This function initializes the TEMP module and writes to the hidden configuration register.
 */
static __INLINE void nrf_temp_init(void)
{
    /**@note Workaround for PAN_028 rev2.0A anomaly 31 - TEMP: Temperature offset value has to be manually loaded to the TEMP module */
    *(uint32_t *) 0x4000C504 = 0;
}

/**
 * @brief Function for reading temperature measurement.
 *
 * The function reads the 10 bit 2's complement value and transforms it to a 32 bit 2's complement value.
 */
static __INLINE int32_t nrf_temp_read(void)
{
    /**@note Workaround for PAN_028 rev2.0A anomaly 28 - TEMP: Negative measured values are not represented correctly */
    return ((NRF_TEMP->TEMP & MASK_SIGN) != 0) ? (int32_t)(NRF_TEMP->TEMP | MASK_SIGN_EXTENSION) : (NRF_TEMP->TEMP);
}

/** @} */

#ifdef __cplusplus
}
#endif

#endif