mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

targets/TARGET_NORDIC/TARGET_NRF5x/nrf5x_lf_clk_helper.h@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
Parent:
188:bcfe06ba3d64 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /*
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2016 Nordic Semiconductor ASA
<> 144:ef7eb2e8f9f7 3 * All rights reserved.
<> 144:ef7eb2e8f9f7 4 *
<> 144:ef7eb2e8f9f7 5 * Redistribution and use in source and binary forms, with or without modification,
<> 144:ef7eb2e8f9f7 6 * are permitted provided that the following conditions are met:
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * 1. Redistributions of source code must retain the above copyright notice, this list
<> 144:ef7eb2e8f9f7 9 * of conditions and the following disclaimer.
<> 144:ef7eb2e8f9f7 10 *
<> 144:ef7eb2e8f9f7 11 * 2. Redistributions in binary form, except as embedded into a Nordic Semiconductor ASA
<> 144:ef7eb2e8f9f7 12 * integrated circuit in a product or a software update for such product, must reproduce
<> 144:ef7eb2e8f9f7 13 * the above copyright notice, this list of conditions and the following disclaimer in
<> 144:ef7eb2e8f9f7 14 * the documentation and/or other materials provided with the distribution.
<> 144:ef7eb2e8f9f7 15 *
<> 144:ef7eb2e8f9f7 16 * 3. Neither the name of Nordic Semiconductor ASA nor the names of its contributors may be
<> 144:ef7eb2e8f9f7 17 * used to endorse or promote products derived from this software without specific prior
<> 144:ef7eb2e8f9f7 18 * written permission.
<> 144:ef7eb2e8f9f7 19 *
<> 144:ef7eb2e8f9f7 20 * 4. This software, with or without modification, must only be used with a
<> 144:ef7eb2e8f9f7 21 * Nordic Semiconductor ASA integrated circuit.
<> 144:ef7eb2e8f9f7 22 *
<> 144:ef7eb2e8f9f7 23 * 5. Any software provided in binary or object form under this license must not be reverse
<> 144:ef7eb2e8f9f7 24 * engineered, decompiled, modified and/or disassembled.
<> 144:ef7eb2e8f9f7 25 *
<> 144:ef7eb2e8f9f7 26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
<> 144:ef7eb2e8f9f7 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
<> 144:ef7eb2e8f9f7 28 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 144:ef7eb2e8f9f7 29 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
<> 144:ef7eb2e8f9f7 30 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
<> 144:ef7eb2e8f9f7 31 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
<> 144:ef7eb2e8f9f7 32 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
<> 144:ef7eb2e8f9f7 33 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
<> 144:ef7eb2e8f9f7 34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
<> 144:ef7eb2e8f9f7 35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 144:ef7eb2e8f9f7 36 *
<> 144:ef7eb2e8f9f7 37 */
<> 144:ef7eb2e8f9f7 38
<> 144:ef7eb2e8f9f7 39 #ifndef __NRF5X_LF_CLK_HELPER_H_
<> 144:ef7eb2e8f9f7 40
<> 144:ef7eb2e8f9f7 41 #ifndef MBED_CONF_NORDIC_NRF_LF_CLOCK_SRC
<> 144:ef7eb2e8f9f7 42 #define MBED_CONF_NORDIC_NRF_LF_CLOCK_SRC (NRF_LF_SRC_XTAL)
<> 144:ef7eb2e8f9f7 43 #warning No configuration for LF clock source. Xtal source will be used as a default configuration.
<> 144:ef7eb2e8f9f7 44 #endif
<> 144:ef7eb2e8f9f7 45
AnnaBridge 188:bcfe06ba3d64 46 #define DEFAULT_LFCLK_CONF_ACCURACY NRF_CLOCK_LF_XTAL_ACCURACY_20_PPM
AnnaBridge 188:bcfe06ba3d64 47
AnnaBridge 188:bcfe06ba3d64 48 #ifdef NRF52
AnnaBridge 188:bcfe06ba3d64 49 #define MAX_LFCLK_CONF_RC_CTIV 32
AnnaBridge 188:bcfe06ba3d64 50 #else
AnnaBridge 188:bcfe06ba3d64 51 #define MAX_LFCLK_CONF_RC_CTIV 64
AnnaBridge 188:bcfe06ba3d64 52 #endif
AnnaBridge 188:bcfe06ba3d64 53
AnnaBridge 188:bcfe06ba3d64 54 #define MAX_LFCLK_CONF_RC_TEMP_CTIV 33
AnnaBridge 188:bcfe06ba3d64 55
AnnaBridge 188:bcfe06ba3d64 56 #define DEFAULT_LFCLK_CONF_RC_CTIV 16 // Check temperature every 16 * 250ms.
AnnaBridge 188:bcfe06ba3d64 57 #define DEFAULT_LFCLK_CONF_RC_TEMP_CTIV 1 // Only calibrate if temperature has changed.
<> 144:ef7eb2e8f9f7 58
<> 144:ef7eb2e8f9f7 59
<> 144:ef7eb2e8f9f7 60 #define NRF_LF_SRC_XTAL 2
<> 144:ef7eb2e8f9f7 61 #define NRF_LF_SRC_SYNTH 3
<> 144:ef7eb2e8f9f7 62 #define NRF_LF_SRC_RC 4
<> 144:ef7eb2e8f9f7 63
<> 144:ef7eb2e8f9f7 64 #if MBED_CONF_NORDIC_NRF_LF_CLOCK_SRC == NRF_LF_SRC_SYNTH
AnnaBridge 188:bcfe06ba3d64 65 #define NRF_SDH_CLOCK_LF_SRC NRF_CLOCK_LF_SRC_SYNTH
AnnaBridge 188:bcfe06ba3d64 66 #define NRF_SDH_CLOCK_LF_RC_CTIV 0 // Must be 0 if source is not NRF_CLOCK_LF_SRC_RC.
AnnaBridge 188:bcfe06ba3d64 67 #define NRF_SDH_CLOCK_LF_RC_TEMP_CTIV 0 // Must be 0 if source is not NRF_CLOCK_LF_SRC_RC.
<> 144:ef7eb2e8f9f7 68 #define CLOCK_LFCLKSRC_SRC_TO_USE (CLOCK_LFCLKSRC_SRC_Synth)
<> 144:ef7eb2e8f9f7 69 #elif MBED_CONF_NORDIC_NRF_LF_CLOCK_SRC == NRF_LF_SRC_XTAL
AnnaBridge 188:bcfe06ba3d64 70 #define NRF_SDH_CLOCK_LF_SRC NRF_CLOCK_LF_SRC_XTAL
AnnaBridge 188:bcfe06ba3d64 71 #define NRF_SDH_CLOCK_LF_RC_CTIV 0 // Must be 0 if source is not NRF_CLOCK_LF_SRC_RC.
AnnaBridge 188:bcfe06ba3d64 72 #define NRF_SDH_CLOCK_LF_RC_TEMP_CTIV 0 // Must be 0 if source is not NRF_CLOCK_LF_SRC_RC.
<> 144:ef7eb2e8f9f7 73 #define CLOCK_LFCLKSRC_SRC_TO_USE (CLOCK_LFCLKSRC_SRC_Xtal)
<> 144:ef7eb2e8f9f7 74 #elif MBED_CONF_NORDIC_NRF_LF_CLOCK_SRC == NRF_LF_SRC_RC
AnnaBridge 188:bcfe06ba3d64 75 #define NRF_SDH_CLOCK_LF_SRC NRF_CLOCK_LF_SRC_RC
AnnaBridge 188:bcfe06ba3d64 76
AnnaBridge 188:bcfe06ba3d64 77 #ifdef MBED_CONF_NORDIC_NRF_LF_CLOCK_CALIB_TIMER_INTERVAL
AnnaBridge 188:bcfe06ba3d64 78 #define NRF_SDH_CLOCK_LF_RC_CTIV MBED_CONF_NORDIC_NRF_LF_CLOCK_CALIB_TIMER_INTERVAL
AnnaBridge 188:bcfe06ba3d64 79 #else
AnnaBridge 188:bcfe06ba3d64 80 #define NRF_SDH_CLOCK_LF_RC_CTIV DEFAULT_LFCLK_CONF_RC_CTIV
AnnaBridge 188:bcfe06ba3d64 81 #endif
AnnaBridge 188:bcfe06ba3d64 82
AnnaBridge 188:bcfe06ba3d64 83 #ifdef MBED_CONF_NORDIC_NRF_LF_CLOCK_CALIB_MODE_CONFIG
AnnaBridge 188:bcfe06ba3d64 84 #define NRF_SDH_CLOCK_LF_RC_TEMP_CTIV MBED_CONF_NORDIC_NRF_LF_CLOCK_CALIB_MODE_CONFIG
AnnaBridge 188:bcfe06ba3d64 85 #else
AnnaBridge 188:bcfe06ba3d64 86 #define NRF_SDH_CLOCK_LF_RC_TEMP_CTIV DEFAULT_LFCLK_CONF_RC_TEMP_CTIV
AnnaBridge 188:bcfe06ba3d64 87 #endif
AnnaBridge 188:bcfe06ba3d64 88
AnnaBridge 188:bcfe06ba3d64 89 #if (NRF_SDH_CLOCK_LF_RC_CTIV < 1) || (NRF_SDH_CLOCK_LF_RC_CTIV > MAX_LFCLK_CONF_RC_CTIV)
AnnaBridge 188:bcfe06ba3d64 90 #error Calibration timer interval out of range!
AnnaBridge 188:bcfe06ba3d64 91 #endif
AnnaBridge 188:bcfe06ba3d64 92
AnnaBridge 188:bcfe06ba3d64 93 #if (NRF_SDH_CLOCK_LF_RC_TEMP_CTIV < 0 ) || (NRF_SDH_CLOCK_LF_RC_TEMP_CTIV > 33)
AnnaBridge 188:bcfe06ba3d64 94 #error Number/mode of LF RC calibration intervals out of range!
AnnaBridge 188:bcfe06ba3d64 95 #endif
AnnaBridge 188:bcfe06ba3d64 96
<> 144:ef7eb2e8f9f7 97 #define CLOCK_LFCLKSRC_SRC_TO_USE (CLOCK_LFCLKSRC_SRC_RC)
<> 144:ef7eb2e8f9f7 98 #else
<> 144:ef7eb2e8f9f7 99 #error Bad LFCLK configuration. Declare proper source through mbed configuration.
<> 144:ef7eb2e8f9f7 100 #endif
<> 144:ef7eb2e8f9f7 101
<> 144:ef7eb2e8f9f7 102 #undef NRF_LF_SRC_XTAL
<> 144:ef7eb2e8f9f7 103 #undef NRF_LF_SRC_SYNTH
<> 144:ef7eb2e8f9f7 104 #undef NRF_LF_SRC_RC
<> 144:ef7eb2e8f9f7 105
<> 144:ef7eb2e8f9f7 106 #endif