Nordic stack and drivers for the mbed BLE API
Fork of nRF51822 by
TARGET_MCU_NRF51822/sdk/source/drivers_nrf/hal/nrf_temp.h
- Committer:
- amithy
- Date:
- 2017-11-09
- Revision:
- 639:4794dfdc59c0
- Parent:
- 638:c90ae1400bf2
File content as of revision 639:4794dfdc59c0:
/* * Copyright (c) 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 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 other * contributors to this software may be used to endorse or promote products * derived from this software without specific prior written permission. * * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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 "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