154 lines
4.8 KiB
C
154 lines
4.8 KiB
C
/**
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* Copyright (c) 2014 - 2020, Nordic Semiconductor ASA
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form, except as embedded into a Nordic
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* Semiconductor ASA integrated circuit in a product or a software update for
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* such product, must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* 4. This software, with or without modification, must only be used with a
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* Nordic Semiconductor ASA integrated circuit.
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*
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* 5. Any software provided in binary form under this license must not be reverse
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* engineered, decompiled, modified and/or disassembled.
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*
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* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/** @file
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* @defgroup nrf_dev_wdt_example_main main.c
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* @{
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* @ingroup nrf_dev_wdt_example
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* @brief WDT Example Application main file.
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*
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* This file contains the source code for a sample application using WDT.
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*
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*/
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#include <stdbool.h>
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#include <stdint.h>
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#include "nrf.h"
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#include "bsp.h"
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#include "app_timer.h"
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#include "app_error.h"
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#include "nrf_drv_wdt.h"
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#include "nrf_drv_clock.h"
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#include "nrf_delay.h"
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#include "app_util_platform.h"
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#define FEED_BUTTON_ID 0 /**< Button for feeding the dog. */
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nrf_drv_wdt_channel_id m_channel_id;
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/**
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* @brief WDT events handler.
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*/
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void wdt_event_handler(void)
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{
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bsp_board_leds_off();
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//NOTE: The max amount of time we can spend in WDT interrupt is two cycles of 32768[Hz] clock - after that, reset occurs
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}
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/**
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* @brief Assert callback.
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*
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* @param[in] id Fault identifier. See @ref NRF_FAULT_IDS.
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* @param[in] pc The program counter of the instruction that triggered the fault, or 0 if
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* unavailable.
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* @param[in] info Optional additional information regarding the fault. Refer to each fault
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* identifier for details.
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*/
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void app_error_fault_handler(uint32_t id, uint32_t pc, uint32_t info)
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{
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bsp_board_leds_off();
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while (1);
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}
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/**
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* @brief BSP events callback.
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*/
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void bsp_event_callback(bsp_event_t event)
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{
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switch (event)
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{
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case BSP_EVENT_KEY_0:
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nrf_drv_wdt_channel_feed(m_channel_id);
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break;
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default :
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//Do nothing.
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break;
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}
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}
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/**
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* @brief Function for main application entry.
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*/
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int main(void)
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{
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uint32_t err_code = NRF_SUCCESS;
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//BSP configuration for button support: button pushing will feed the dog.
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err_code = nrf_drv_clock_init();
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APP_ERROR_CHECK(err_code);
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nrf_drv_clock_lfclk_request(NULL);
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err_code = app_timer_init();
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APP_ERROR_CHECK(err_code);
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err_code = bsp_init(BSP_INIT_BUTTONS, bsp_event_callback);
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APP_ERROR_CHECK(err_code);
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//Configure all LEDs on board.
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bsp_board_init(BSP_INIT_LEDS);
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//Configure WDT.
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nrf_drv_wdt_config_t config = NRF_DRV_WDT_DEAFULT_CONFIG;
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err_code = nrf_drv_wdt_init(&config, wdt_event_handler);
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APP_ERROR_CHECK(err_code);
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err_code = nrf_drv_wdt_channel_alloc(&m_channel_id);
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APP_ERROR_CHECK(err_code);
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nrf_drv_wdt_enable();
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//Indicate program start on LEDs.
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for (uint32_t i = 0; i < LEDS_NUMBER; i++)
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{ nrf_delay_ms(200);
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bsp_board_led_on(i);
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}
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err_code = bsp_buttons_enable();
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APP_ERROR_CHECK(err_code);
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while (1)
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{
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__SEV();
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__WFE();
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__WFE();
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}
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}
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/** @} */
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