111 lines
3.8 KiB
C
111 lines
3.8 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_timer_example_main main.c
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* @{
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* @ingroup nrf_dev_timer_example
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* @brief Timer Example Application main file.
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*
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* This file contains the source code for a sample application using Timer0.
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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 "nrf_drv_timer.h"
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#include "bsp.h"
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#include "app_error.h"
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const nrf_drv_timer_t TIMER_LED = NRF_DRV_TIMER_INSTANCE(0);
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/**
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* @brief Handler for timer events.
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*/
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void timer_led_event_handler(nrf_timer_event_t event_type, void* p_context)
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{
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static uint32_t i;
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uint32_t led_to_invert = ((i++) % LEDS_NUMBER);
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switch (event_type)
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{
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case NRF_TIMER_EVENT_COMPARE0:
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bsp_board_led_invert(led_to_invert);
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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 time_ms = 500; //Time(in miliseconds) between consecutive compare events.
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uint32_t time_ticks;
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uint32_t err_code = NRF_SUCCESS;
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//Configure all leds on board.
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bsp_board_init(BSP_INIT_LEDS);
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//Configure TIMER_LED for generating simple light effect - leds on board will invert his state one after the other.
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nrf_drv_timer_config_t timer_cfg = NRF_DRV_TIMER_DEFAULT_CONFIG;
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err_code = nrf_drv_timer_init(&TIMER_LED, &timer_cfg, timer_led_event_handler);
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APP_ERROR_CHECK(err_code);
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time_ticks = nrf_drv_timer_ms_to_ticks(&TIMER_LED, time_ms);
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nrf_drv_timer_extended_compare(
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&TIMER_LED, NRF_TIMER_CC_CHANNEL0, time_ticks, NRF_TIMER_SHORT_COMPARE0_CLEAR_MASK, true);
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nrf_drv_timer_enable(&TIMER_LED);
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while (1)
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{
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__WFI();
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}
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}
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/** @} */
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