mirror of
https://github.com/bluekitchen/btstack.git
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109 lines
3.8 KiB
C
109 lines
3.8 KiB
C
/*
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* Copyright (C) 2014 BlueKitchen GmbH
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holders nor the names of
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* 4. Any redistribution, use, or modification is done solely for
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* personal benefit and not for any commercial purpose or for
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* monetary gain.
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*
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* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN
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* GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Please inquire about commercial licensing options at
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* contact@bluekitchen-gmbh.com
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*
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*/
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#define BTSTACK_FILE__ "led_counter.c"
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// *****************************************************************************
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/* EXAMPLE_START(led_counter): Hello World - Blinking an LED without Bluetooth
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*
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* @text The example demonstrates how to provide a periodic timer to toggle an
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* LED and send debug messages to the console as a minimal BTstack test.
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*/
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// *****************************************************************************
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#include <stdio.h>
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#include "btstack.h"
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#include "hal_led.h"
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#define HEARTBEAT_PERIOD_MS 1000
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static int counter = 0;
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static btstack_timer_source_t heartbeat;
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/* @section Periodic Timer Setup
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*
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* @text As timers in BTstack are single shot,
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* the periodic counter is implemented by re-registering the timer source in the
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* heartbeat handler callback function. Listing LEDToggler shows heartbeat handler
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* adapted to periodically toggle an LED and print number of toggles.
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*/
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/* LISTING_START(LEDToggler): Periodic counter */
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static void heartbeat_handler(btstack_timer_source_t *ts){
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UNUSED(ts);
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// increment counter
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counter++;
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// print and log
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log_info("BTstack Counter %u", counter);
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printf("BTstack counter %04u\n\r", counter);
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// toggle LED
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hal_led_toggle();
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// re-register timer
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btstack_run_loop_set_timer(&heartbeat, HEARTBEAT_PERIOD_MS);
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btstack_run_loop_add_timer(&heartbeat);
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}
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/* LISTING_END */
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/* @section Main Application Setup
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*
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* @text Listing MainConfiguration shows main application code.
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* It configures the heartbeat tier and adds it to the run loop.
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*/
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/* LISTING_START(MainConfiguration): Setup heartbeat timer */
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int btstack_main(int argc, const char * argv[]);
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int btstack_main(int argc, const char * argv[]){
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(void)argc;
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(void)argv;
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// set one-shot timer
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heartbeat.process = &heartbeat_handler;
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btstack_run_loop_set_timer(&heartbeat, HEARTBEAT_PERIOD_MS);
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btstack_run_loop_add_timer(&heartbeat);
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printf("Running...\n\r");
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return 0;
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}
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/* LISTING_END */
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/* EXAMPLE_END */
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