/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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#include "nimble_syscfg.h"
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#include "hal/hal_system.h"
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#include "hal/hal_debug.h"
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#include "nrf.h"
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#include "cmsis.h"
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#include "mcu/mcu_sim.h"
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#include "hal/nrf_clock.h"
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/**
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* Function called at startup. Called after BSS and .data initialized but
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* prior to the _start function.
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*
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* NOTE: this function is called by both the bootloader and the application.
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* If you add code here that you do not want executed in either case you need
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* to conditionally compile it using the config variable BOOT_LOADER (will
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* be set to 1 in case of bootloader build)
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*
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*/
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void
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hal_system_init(void)
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{
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#if MYNEWT_VAL(MCU_DCDC_ENABLED)
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NRF_POWER->DCDCEN = 1;
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#endif
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}
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void
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hal_system_reset(void)
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{
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#if MYNEWT_VAL(HAL_SYSTEM_RESET_CB)
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hal_system_reset_cb();
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#endif
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while (1) {
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HAL_DEBUG_BREAK();
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NVIC_SystemReset();
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}
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}
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int
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hal_debugger_connected(void)
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{
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return 0;
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}
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/**
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* hal system clock start
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*
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* Makes sure the LFCLK and/or HFCLK is started.
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*/
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void
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hal_system_clock_start(void)
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{
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#if MYNEWT_VAL(MCU_LFCLK_SOURCE)
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uint32_t regmsk;
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uint32_t regval;
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uint32_t clksrc;
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regmsk = CLOCK_LFCLKSTAT_STATE_Msk | CLOCK_LFCLKSTAT_SRC_Msk;
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regval = CLOCK_LFCLKSTAT_STATE_Running << CLOCK_LFCLKSTAT_STATE_Pos;
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#if MYNEWT_VAL_CHOICE(MCU_LFCLK_SOURCE, LFXO)
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regval |= CLOCK_LFCLKSTAT_SRC_Xtal << CLOCK_LFCLKSTAT_SRC_Pos;
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clksrc = CLOCK_LFCLKSRC_SRC_Xtal;
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#elif MYNEWT_VAL_CHOICE(MCU_LFCLK_SOURCE, LFSYNTH)
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regval |= CLOCK_LFCLKSTAT_SRC_Synth << CLOCK_LFCLKSTAT_SRC_Pos;
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clksrc = CLOCK_LFCLKSRC_SRC_Synth;
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#elif MYNEWT_VAL_CHOICE(MCU_LFCLK_SOURCE, LFRC)
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regval |= CLOCK_LFCLKSTAT_SRC_RC << CLOCK_LFCLKSTAT_SRC_Pos;
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clksrc = CLOCK_LFCLKSRC_SRC_RC;
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#else
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#error Unknown LFCLK source selected
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#endif
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#if MYNEWT_VAL_CHOICE(MCU_LFCLK_SOURCE, LFSYNTH)
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/* Must turn on HFLCK for synthesized 32768 crystal */
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nrf52_clock_hfxo_request();
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#else
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/* Make sure HFCLK is stopped */
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nrf_clock_task_trigger(NRF_CLOCK, NRF_CLOCK_TASK_HFCLKSTOP);
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#endif
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/* Check if this clock source is already running */
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if ((NRF_CLOCK_regs.LFCLKSTAT & regmsk) != regval) {
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nrf_clock_task_trigger(NRF_CLOCK, NRF_CLOCK_TASK_LFCLKSTOP);
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NRF_CLOCK_regs.EVENTS_LFCLKSTARTED = 0;
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NRF_CLOCK_regs.LFCLKSRC = clksrc;
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nrf_clock_task_trigger(NRF_CLOCK, NRF_CLOCK_TASK_LFCLKSTART);
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/* Wait here till started! */
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// while (1) {
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// if (NRF_CLOCK_regs.EVENTS_LFCLKSTARTED) {
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// if ((NRF_CLOCK_regs.LFCLKSTAT & regmsk) == regval) {
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// break;
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// }
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// }
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// }
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}
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#endif
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}
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void*
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NRF_RADIO_BASE_FUN(void)
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{
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return NULL;
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}
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