mirror of
https://github.com/mytechnotalent/Embedded-Hacking.git
synced 2026-05-19 22:38:05 +02:00
Kevin Thomas
52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
/**
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******************************************************************************
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* @file main.c
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* @author Kevin Thomas
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* @brief Repeating timer alarm demonstration.
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*
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* Configures TIMER0 alarm 0 to fire a callback every 1 second.
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* The callback prints "Timer heartbeat" over UART. The main
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* loop idles with WFI.
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*
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* Wiring:
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* GPIO0 -> UART TX (USB-to-UART adapter RX)
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* GPIO1 -> UART RX (USB-to-UART adapter TX)
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* No external components required
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*
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2026 Kevin Thomas.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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#include "rp2350_timer.h"
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#include "rp2350_uart.h"
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/**
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* @brief Heartbeat callback invoked by TIMER0 alarm 0 IRQ.
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* @retval None
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*/
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static void _heartbeat(void)
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{
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uart_puts("Timer heartbeat\r\n");
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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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* @retval int does not return
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*/
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int main(void)
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{
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uart_puts("Timer alarm demo initialized\r\n");
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timer_alarm_start(1000, _heartbeat);
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while (1)
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__asm__ volatile ("wfi");
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}
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