Nordic stack and drivers for the mbed BLE API
Fork of nRF51822 by
Diff: TARGET_NRF5/source/btle/btle_clock.h
- Revision:
- 638:c90ae1400bf2
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TARGET_NRF5/source/btle/btle_clock.h Wed Sep 14 14:39:43 2016 +0100 @@ -0,0 +1,133 @@ +/* + * Copyright (c) 2016 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 or object form under this license must not be reverse + * engineered, decompiled, modified and/or disassembled. + * + * 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 _BTLE_CLOCK_H_ +#define _BTLE_CLOCK_H_ + +#include "nrf5x_lf_clk_helper.h" + +/** + * @brief Module that generates settings for the low-frequency (LF) clock configuration. + * + * This module provides macros that are generated from the mbed config system macros. + * + * + * + * As a result, this module provides the following: @n + * - literal value LFCLK_CONF_SOURCE @n + * - literal value LFCLK_CONF_ACCURACY @n + * - literal value LFCLK_CONF_RC_CTIV @n + * - literal value LFCLK_CONF_RC_TEMP_CTIV + */ + + + +#include "nrf_sdm.h" + +#define DEFAULT_LFCLK_CONF_ACCURACY NRF_CLOCK_LF_XTAL_ACCURACY_20_PPM + +#ifdef NRF52 + #define MAX_LFCLK_CONF_RC_CTIV 32 +#else + #define MAX_LFCLK_CONF_RC_CTIV 64 +#endif + +#define MAX_LFCLK_CONF_RC_TEMP_CTIV 33 + +#define DEFAULT_LFCLK_CONF_RC_CTIV 16 // Check temperature every 16 * 250ms. +#define DEFAULT_LFCLK_CONF_RC_TEMP_CTIV 1 // Only calibrate if temperature has changed. + +#define NRF_LF_SRC_XTAL 2 +#define NRF_LF_SRC_SYNTH 3 +#define NRF_LF_SRC_RC 4 + +#if MBED_CONF_NORDIC_NRF_LF_CLOCK_SRC == NRF_LF_SRC_RC + #define LFCLK_CONF_SOURCE NRF_CLOCK_LF_SRC_RC + + #ifdef MBED_CONF_NORDIC_NRF_LF_CLOCK_CALIB_TIMER_INTERVAL + #define LFCLK_CONF_RC_CTIV MBED_CONF_NORDIC_NRF_LF_CLOCK_CALIB_TIMER_INTERVAL + #else + #define LFCLK_CONF_RC_CTIV DEFAULT_LFCLK_CONF_RC_CTIV + #endif + + #ifdef MBED_CONF_NORDIC_NRF_LF_CLOCK_CALIB_MODE_CONFIG + #define LFCLK_CONF_RC_TEMP_CTIV MBED_CONF_NORDIC_NRF_LF_CLOCK_CALIB_MODE_CONFIG + #else + #define LFCLK_CONF_RC_TEMP_CTIV DEFAULT_LFCLK_CONF_RC_TEMP_CTIV + #endif + + #if (LFCLK_CONF_RC_CTIV < 1) || (LFCLK_CONF_RC_CTIV > MAX_LFCLK_CONF_RC_CTIV) + #error Calibration timer interval out of range! + #endif + + #if (LFCLK_CONF_RC_TEMP_CTIV < 0 ) || (LFCLK_CONF_RC_TEMP_CTIV > 33) + #error Number/mode of LF RC calibration intervals out of range! + #endif + +#elif MBED_CONF_NORDIC_NRF_LF_CLOCK_SRC == NRF_LF_SRC_SYNTH + #define LFCLK_CONF_SOURCE NRF_CLOCK_LF_SRC_SYNTH + #define LFCLK_CONF_RC_CTIV 0 // Must be 0 if source is not NRF_CLOCK_LF_SRC_RC. + #define LFCLK_CONF_RC_TEMP_CTIV 0 // Must be 0 if source is not NRF_CLOCK_LF_SRC_RC. + + #ifdef MBED_CONF_NORDIC_LF_CLOCK_HF_SYNTH_ACCURACY + #define LFCLK_CONF_ACCURACY MBED_CONF_NORDIC_LF_CLOCK_HF_SYNTH_ACCURACY + #endif + +#else // default is NRF_LF_SRC_SYNTH + #define LFCLK_CONF_SOURCE NRF_CLOCK_LF_SRC_XTAL + #define LFCLK_CONF_RC_CTIV 0 // Must be 0 if source is not NRF_CLOCK_LF_SRC_RC. + #define LFCLK_CONF_RC_TEMP_CTIV 0 // Must be 0 if source is not NRF_CLOCK_LF_SRC_RC. + + #ifdef MBED_CONF_NORDIC_LF_CLOCK_XTAL_ACCURACY + #define LFCLK_CONF_ACCURACY MBED_CONF_NORDIC_LF_CLOCK_XTAL_ACCURACY + #endif + +#endif + +#ifndef LFCLK_CONF_ACCURACY + #define LFCLK_CONF_ACCURACY DEFAULT_LFCLK_CONF_ACCURACY +#endif + +#if (LFCLK_CONF_ACCURACY > NRF_CLOCK_LF_XTAL_ACCURACY_20_PPM) || (LFCLK_CONF_ACCURACY < NRF_CLOCK_LF_XTAL_ACCURACY_250_PPM) + #error Low frequency clock accuracy out of range! +#endif + + +#endif //_BTLE_CLOCK_H_ + +