96 lines
2.2 KiB
C
96 lines
2.2 KiB
C
/*
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* Copyright (C) 2014 Infineon Technologies AG. All rights reserved.
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*
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* Infineon Technologies AG (Infineon) is supplying this software for use with
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* Infineon's microcontrollers.
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* This file can be freely distributed within development tools that are
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* supporting such microcontrollers.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED
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* OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
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* INFINEON SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL,
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* OR CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
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*
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*/
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/**
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* @file
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* @date 05 Dec, 2014
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* @version 1.0.0
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*
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* @brief RTC demo example
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*
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* The RTC demo example programs the alarm to 1 minute after the start of the application
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* The triggered interrupt will stop blinking LED1 (P1.1) of RelaxKit
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*
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* History <br>
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*
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* Version 1.0.0 Initial <br>
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*
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*/
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#include <xmc_scu.h>
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#include <xmc_rtc.h>
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#include <xmc_gpio.h>
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#define TICKS_PER_SECOND 1000
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#define TICKS_WAIT 500
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#define LED1 P1_1
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XMC_RTC_CONFIG_t rtc_config =
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{
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.alarm.minutes = 1U,
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.prescaler = 0x7fffU
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};
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void alarm_handler(void)
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{
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/* Stop SysTick timer */
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SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk;
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XMC_GPIO_SetOutputHigh(LED1);
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}
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void SCU_0_IRQHandler(void)
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{
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XMC_SCU_IRQHandler(0);
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}
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void SysTick_Handler(void)
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{
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static uint32_t ticks = 0;
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ticks++;
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if (ticks == TICKS_WAIT)
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{
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XMC_GPIO_ToggleOutput(LED1);
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ticks = 0;
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}
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}
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int main(void)
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{
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XMC_SCU_HIB_EnableHibernateDomain();
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XMC_SCU_HIB_SetRtcClockSource(XMC_SCU_HIB_RTCCLKSRC_OSI);
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XMC_RTC_Init(&rtc_config);
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XMC_RTC_EnableEvent(XMC_RTC_EVENT_ALARM);
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XMC_SCU_INTERRUPT_SetEventHandler(XMC_SCU_INTERRUPT_EVENT_RTC_ALARM, alarm_handler);
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XMC_SCU_INTERRUPT_EnableEvent(XMC_SCU_INTERRUPT_EVENT_RTC_ALARM);
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NVIC_SetPriority(SCU_0_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(), 63, 0));
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NVIC_EnableIRQ(SCU_0_IRQn);
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XMC_GPIO_SetMode(LED1, XMC_GPIO_MODE_OUTPUT_PUSH_PULL);
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SysTick_Config(SystemCoreClock / TICKS_PER_SECOND);
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XMC_RTC_Start();
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while(1)
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{
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/* Infinite loop */
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}
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}
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