/* * Copyright (c) 2019 Trampoline SRL * Copyright (c) 2019 Giampaolo Mancini <giampaolo@trampolineup.com> * SPDX-License-Identifier: Apache-2.0 * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include "watchdog_api.h" #include "nrfx_wdt.h" #if DEVICE_WATCHDOG static void dummy(void) { } watchdog_status_t hal_watchdog_init(const watchdog_config_t *config) { nrfx_err_t err_code; // The nRF watchdogs accept a range from 0xF to maximum 0xFFFF_FFFF // 32768 Hz ticks. (Plase, see // https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v15.3.0%2Fstructnrfx__wdt__config__t.html) // Min timeout values in ms range from 0x1 to (0xFFFFFFFF / 0x8000) * 1000 if ( config->timeout_ms < 0x1 && config->timeout_ms > 0x07CFFFFF ) { return WATCHDOG_STATUS_INVALID_ARGUMENT; } nrfx_wdt_config_t nrf_cfg; nrf_cfg.reload_value = config->timeout_ms; nrf_cfg.behaviour = NRF_WDT_BEHAVIOUR_RUN_SLEEP_HALT; nrf_cfg.interrupt_priority = NRFX_WDT_CONFIG_NO_IRQ; err_code = nrfx_wdt_init(&nrf_cfg, dummy); if (err_code != NRFX_SUCCESS) { return WATCHDOG_STATUS_INVALID_ARGUMENT; } nrfx_wdt_channel_id channel; if (nrfx_wdt_channel_alloc(&channel) != NRF_SUCCESS) { return WATCHDOG_STATUS_INVALID_ARGUMENT; } nrfx_wdt_enable(); nrfx_wdt_feed(); return WATCHDOG_STATUS_OK; } void hal_watchdog_kick(void) { nrfx_wdt_feed(); } watchdog_status_t hal_watchdog_stop(void) { return WATCHDOG_STATUS_NOT_SUPPORTED; } uint32_t hal_watchdog_get_reload_value(void) { // Convert to milliseconds from 32768 Hz clock ticks. return (uint64_t)nrf_wdt_reload_value_get() / 32768U * 1000; } watchdog_features_t hal_watchdog_get_platform_features(void) { watchdog_features_t features; features.max_timeout = 0x07CFFFFF; features.update_config = false; features.disable_watchdog = false; return features; } #endif // DEVICE_WATCHDOG