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67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
/**
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* @file 0x0d_timer.c
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* @brief Repeating timer demo using timer.c/timer.h
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* @author Kevin Thomas
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* @date 2025
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*
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* MIT License
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*
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* Copyright (c) 2025 Kevin Thomas
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* -----------------------------------------------------------------------------
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*
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* Demonstrates repeating timer callbacks using the timer driver
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* (timer.h / timer.c). A one-second heartbeat timer prints a message
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* over UART to confirm the timer is firing.
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*
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* Wiring:
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* No external wiring required
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*/
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#include <stdio.h>
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#include "pico/stdlib.h"
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#include "timer.h"
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/**
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* @brief Heartbeat timer callback that prints a message over UART
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*
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* @return bool true to keep the repeating timer active
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*/
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static bool _heartbeat_callback(void) {
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printf("Timer heartbeat\r\n");
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return true;
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}
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/**
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* @brief Application entry point for the repeating timer demo
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*
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* Starts a 1-second repeating timer whose callback prints a
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* heartbeat message over UART.
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*
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* @return int Does not return
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*/
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int main(void) {
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stdio_init_all();
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timer_driver_start(1000, _heartbeat_callback);
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while (true)
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tight_loop_contents();
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}
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