mirror of https://github.com/ARMmbed/mbed-os.git
107 lines
4.6 KiB
C
107 lines
4.6 KiB
C
/*
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* Copyright (c) 2016 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 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 list
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* 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 Semiconductor ASA
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* integrated circuit in a product or a software update for such product, must reproduce
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* the above copyright notice, this list of conditions and the following disclaimer in
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* the documentation and/or other 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 contributors may be
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* used to endorse or promote products derived from this software without specific prior
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* 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 or object 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef __NRF5X_LF_CLK_HELPER_H_
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#ifndef MBED_CONF_NORDIC_NRF_LF_CLOCK_SRC
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#define MBED_CONF_NORDIC_NRF_LF_CLOCK_SRC (NRF_LF_SRC_XTAL)
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#warning No configuration for LF clock source. Xtal source will be used as a default configuration.
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#endif
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#define DEFAULT_LFCLK_CONF_ACCURACY NRF_CLOCK_LF_XTAL_ACCURACY_20_PPM
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#ifdef NRF52
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#define MAX_LFCLK_CONF_RC_CTIV 32
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#else
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#define MAX_LFCLK_CONF_RC_CTIV 64
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#endif
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#define MAX_LFCLK_CONF_RC_TEMP_CTIV 33
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#define DEFAULT_LFCLK_CONF_RC_CTIV 16 // Check temperature every 16 * 250ms.
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#define DEFAULT_LFCLK_CONF_RC_TEMP_CTIV 1 // Only calibrate if temperature has changed.
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#define NRF_LF_SRC_XTAL 2
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#define NRF_LF_SRC_SYNTH 3
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#define NRF_LF_SRC_RC 4
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#if MBED_CONF_NORDIC_NRF_LF_CLOCK_SRC == NRF_LF_SRC_SYNTH
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#define NRF_SDH_CLOCK_LF_SRC NRF_CLOCK_LF_SRC_SYNTH
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#define NRF_SDH_CLOCK_LF_RC_CTIV 0 // Must be 0 if source is not NRF_CLOCK_LF_SRC_RC.
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#define NRF_SDH_CLOCK_LF_RC_TEMP_CTIV 0 // Must be 0 if source is not NRF_CLOCK_LF_SRC_RC.
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#define CLOCK_LFCLKSRC_SRC_TO_USE (CLOCK_LFCLKSRC_SRC_Synth)
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#elif MBED_CONF_NORDIC_NRF_LF_CLOCK_SRC == NRF_LF_SRC_XTAL
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#define NRF_SDH_CLOCK_LF_SRC NRF_CLOCK_LF_SRC_XTAL
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#define NRF_SDH_CLOCK_LF_RC_CTIV 0 // Must be 0 if source is not NRF_CLOCK_LF_SRC_RC.
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#define NRF_SDH_CLOCK_LF_RC_TEMP_CTIV 0 // Must be 0 if source is not NRF_CLOCK_LF_SRC_RC.
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#define CLOCK_LFCLKSRC_SRC_TO_USE (CLOCK_LFCLKSRC_SRC_Xtal)
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#elif MBED_CONF_NORDIC_NRF_LF_CLOCK_SRC == NRF_LF_SRC_RC
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#define NRF_SDH_CLOCK_LF_SRC NRF_CLOCK_LF_SRC_RC
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#ifdef MBED_CONF_NORDIC_NRF_LF_CLOCK_CALIB_TIMER_INTERVAL
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#define NRF_SDH_CLOCK_LF_RC_CTIV MBED_CONF_NORDIC_NRF_LF_CLOCK_CALIB_TIMER_INTERVAL
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#else
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#define NRF_SDH_CLOCK_LF_RC_CTIV DEFAULT_LFCLK_CONF_RC_CTIV
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#endif
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#ifdef MBED_CONF_NORDIC_NRF_LF_CLOCK_CALIB_MODE_CONFIG
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#define NRF_SDH_CLOCK_LF_RC_TEMP_CTIV MBED_CONF_NORDIC_NRF_LF_CLOCK_CALIB_MODE_CONFIG
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#else
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#define NRF_SDH_CLOCK_LF_RC_TEMP_CTIV DEFAULT_LFCLK_CONF_RC_TEMP_CTIV
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#endif
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#if (NRF_SDH_CLOCK_LF_RC_CTIV < 1) || (NRF_SDH_CLOCK_LF_RC_CTIV > MAX_LFCLK_CONF_RC_CTIV)
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#error Calibration timer interval out of range!
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#endif
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#if (NRF_SDH_CLOCK_LF_RC_TEMP_CTIV < 0 ) || (NRF_SDH_CLOCK_LF_RC_TEMP_CTIV > 33)
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#error Number/mode of LF RC calibration intervals out of range!
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#endif
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#define CLOCK_LFCLKSRC_SRC_TO_USE (CLOCK_LFCLKSRC_SRC_RC)
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#else
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#error Bad LFCLK configuration. Declare proper source through mbed configuration.
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#endif
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#undef NRF_LF_SRC_XTAL
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#undef NRF_LF_SRC_SYNTH
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#undef NRF_LF_SRC_RC
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#endif
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