mirror of https://github.com/ARMmbed/mbed-os.git
85 lines
2.3 KiB
C
85 lines
2.3 KiB
C
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/****************************************************************************
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*
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* Copyright 2020 Samsung Electronics All Rights Reserved.
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* 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 KIND,
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* either express or implied. See the License for the specific
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* language governing permissions and limitations under the License.
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*
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****************************************************************************/
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#include <stdbool.h>
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#include "s1sbp6a.h"
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#include "s1sbp6a_type.h"
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#include "s1sbp6a_wdog.h"
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#include "s1sbp6a_cmu.h"
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#define WATCHDOG_RESET_ENABLED 1
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static void bp6a_watchdog_lock(bool enable)
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{
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putreg32(&(BP_WATCHDOG->LOCK), enable ? 0 : 0x1ACCE551);
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}
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void bp6a_watchdog_enable(bool enable)
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{
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bp6a_watchdog_lock(false);
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modifyreg32(&(BP_WATCHDOG->CTRL), WDOGCTRL_INT_ENABLE_MASK,
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WDOGCTRL_INT_ENABLE(enable));
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bp6a_watchdog_lock(true);
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}
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void bp6a_wdog_reset_enable(bool enable)
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{
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bp6a_watchdog_lock(false);
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modifyreg32(&(BP_WATCHDOG->CTRL), WDOGCTRL_RESET_ENABLE_MASK,
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WDOGCTRL_RESET_ENABLE(enable));
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bp6a_watchdog_lock(true);
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}
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void bp6a_wdog_set_reload_time(uint32_t ms)
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{
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uint32_t clk = bp6a_cmu_get_clock_freq(CMU_WATCHDOG_APBCLK);
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uint32_t load_val = (uint32_t)((ms * clk) / 1000 + 0.5);
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bp6a_watchdog_lock(false);
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putreg32(&(BP_WATCHDOG->LOAD), load_val);
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bp6a_watchdog_lock(true);
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}
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void bp6a_nmi_handler(void)
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{
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if (getreg32(&(BP_WATCHDOG->CTRL)) & WDOGCTRL_INT_ENABLE_MASK) {
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if (getreg32(&(BP_WATCHDOG->MIS))) {
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putreg32(&BP_WATCHDOG->INTCLR, 0x1);
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}
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}
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}
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void bp6a_wdog_init(uint32_t timeout)
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{
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bp6a_watchdog_enable(false);
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NVIC_SetVector(NonMaskableInt_IRQn, (uint32_t) bp6a_nmi_handler);
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#if defined (__ICACHE_PRESENT) && (__ICACHE_PRESENT == 1U)
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SCB_InvalidateICache();
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#endif
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#if WATCHDOG_RESET_ENABLED
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bp6a_wdog_reset_enable(true);
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#endif
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bp6a_wdog_set_reload_time(timeout);
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bp6a_watchdog_enable(true);
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}
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