/** * Copyright (c) 2015 - 2020, 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 form under this license must not be reverse * engineered, decompiled, modified and/or disassembled. * * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA 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. * */ #include #if NRFX_CHECK(NRFX_WDT_ENABLED) #include #define NRFX_LOG_MODULE WDT #include /**@brief WDT state. */ static nrfx_drv_state_t m_state; /**@brief WDT alloc table. */ static uint8_t m_alloc_index; #if !NRFX_CHECK(NRFX_WDT_CONFIG_NO_IRQ) /**@brief WDT event handler. */ static nrfx_wdt_event_handler_t m_wdt_event_handler; /**@brief WDT interrupt handler. */ void nrfx_wdt_irq_handler(void) { if (nrf_wdt_event_check(NRF_WDT_EVENT_TIMEOUT)) { m_wdt_event_handler(); nrf_wdt_event_clear(NRF_WDT_EVENT_TIMEOUT); } } #endif nrfx_err_t nrfx_wdt_init(nrfx_wdt_config_t const * p_config, nrfx_wdt_event_handler_t wdt_event_handler) { NRFX_ASSERT(p_config); nrfx_err_t err_code; #if !NRFX_CHECK(NRFX_WDT_CONFIG_NO_IRQ) NRFX_ASSERT(wdt_event_handler != NULL); m_wdt_event_handler = wdt_event_handler; #else NRFX_ASSERT(wdt_event_handler == NULL); (void)wdt_event_handler; #endif if (m_state == NRFX_DRV_STATE_UNINITIALIZED) { m_state = NRFX_DRV_STATE_INITIALIZED; } else { err_code = NRFX_ERROR_INVALID_STATE; NRFX_LOG_WARNING("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code)); return err_code; } nrf_wdt_behaviour_set(p_config->behaviour); // uint64_t ticks = (p_config->reload_value * 32768ULL) / 1000; uint64_t ticks = (p_config->reload_value * 32768ULL); NRFX_ASSERT(ticks <= UINT32_MAX); nrf_wdt_reload_value_set((uint32_t) ticks); #if !NRFX_CHECK(NRFX_WDT_CONFIG_NO_IRQ) NRFX_IRQ_PRIORITY_SET(WDT_IRQn, p_config->interrupt_priority); NRFX_IRQ_ENABLE(WDT_IRQn); #endif err_code = NRFX_SUCCESS; NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code)); return err_code; } void nrfx_wdt_enable(void) { NRFX_ASSERT(m_alloc_index != 0); NRFX_ASSERT(m_state == NRFX_DRV_STATE_INITIALIZED); #if !NRFX_CHECK(NRFX_WDT_CONFIG_NO_IRQ) nrf_wdt_int_enable(NRF_WDT_INT_TIMEOUT_MASK); #endif nrf_wdt_task_trigger(NRF_WDT_TASK_START); m_state = NRFX_DRV_STATE_POWERED_ON; NRFX_LOG_INFO("Enabled."); } void nrfx_wdt_feed(void) { NRFX_ASSERT(m_state == NRFX_DRV_STATE_POWERED_ON); for (uint8_t i = 0; i < m_alloc_index; i++) { nrf_wdt_reload_request_set((nrf_wdt_rr_register_t)(NRF_WDT_RR0 + i)); } } nrfx_err_t nrfx_wdt_channel_alloc(nrfx_wdt_channel_id * p_channel_id) { nrfx_err_t result; NRFX_ASSERT(p_channel_id); NRFX_ASSERT(m_state == NRFX_DRV_STATE_INITIALIZED); NRFX_CRITICAL_SECTION_ENTER(); if (m_alloc_index < NRF_WDT_CHANNEL_NUMBER) { *p_channel_id = (nrfx_wdt_channel_id)(NRF_WDT_RR0 + m_alloc_index); m_alloc_index++; nrf_wdt_reload_request_enable(*p_channel_id); result = NRFX_SUCCESS; } else { result = NRFX_ERROR_NO_MEM; } NRFX_CRITICAL_SECTION_EXIT(); NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(result)); return result; } void nrfx_wdt_channel_feed(nrfx_wdt_channel_id channel_id) { NRFX_ASSERT(m_state == NRFX_DRV_STATE_POWERED_ON); nrf_wdt_reload_request_set(channel_id); } #endif // NRFX_CHECK(NRFX_WDT_ENABLED)