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- /**
- * 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 <nrfx.h>
- #if NRFX_CHECK(NRFX_WDT_ENABLED)
- #include <nrfx_wdt.h>
- #define NRFX_LOG_MODULE WDT
- #include <nrfx_log.h>
- /**@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)
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