File content as of revision 171:3a7713b1edbc:

/* 
 * Copyright (c) 2012 Nordic Semiconductor ASA
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification,
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 *      of conditions and the following disclaimer.
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 *      integrated circuit in a product or a software update for such product, must reproduce 
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 *   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 
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 *   4. This software, with or without modification, must only be used with a 
 *      Nordic Semiconductor ASA integrated circuit.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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#ifndef NRF_TEMP_H__
#define NRF_TEMP_H__

#include "nrf.h"

/**
* @defgroup nrf_temperature TEMP (temperature) abstraction
* @{
* @ingroup nrf_drivers temperature_example
* @brief Temperature module init and read functions.
*
*/

/**@cond NO_DOXYGEN */
#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) ? (NRF_TEMP->TEMP | MASK_SIGN_EXTENSION) : (NRF_TEMP->TEMP);    
}
/**@endcond */

/** @} */

#endif