81 lines
2.1 KiB
C
81 lines
2.1 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 04 Dec, 2014
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* @version 1.0.0
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*
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* @brief External interrupt using ERU
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*
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* The user can switch on/off the LED connected to (P0.0) of bootkit board using the potentiometer.
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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_gpio.h>
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#include <xmc_eru.h>
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#define LED P0_0
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#define POT P2_5
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XMC_ERU_ETL_CONFIG_t button_event_generator_config =
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{
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.input = ERU0_ETL1_INPUTA_P2_5,
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.source = XMC_ERU_ETL_SOURCE_A,
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.edge_detection = XMC_ERU_ETL_EDGE_DETECTION_FALLING,
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.status_flag_mode = XMC_ERU_ETL_STATUS_FLAG_MODE_HWCTRL,
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.enable_output_trigger = true,
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.output_trigger_channel = XMC_ERU_ETL_OUTPUT_TRIGGER_CHANNEL0
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};
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XMC_ERU_OGU_CONFIG_t button_event_detection_config =
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{
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.service_request = XMC_ERU_OGU_SERVICE_REQUEST_ON_TRIGGER
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};
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void ERU0_0_IRQHandler(void)
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{
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XMC_GPIO_ToggleOutput(LED);
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}
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int main(void)
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{
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XMC_ERU_ETL_Init(ERU0_ETL1, &button_event_generator_config);
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XMC_ERU_OGU_Init(ERU0_OGU0, &button_event_detection_config);
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XMC_GPIO_CONFIG_t config;
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config.mode = XMC_GPIO_MODE_OUTPUT_PUSH_PULL;
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config.output_level = XMC_GPIO_OUTPUT_LEVEL_HIGH;
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XMC_GPIO_Init(LED, &config);
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config.mode = XMC_GPIO_MODE_INPUT_TRISTATE;
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XMC_GPIO_Init(POT, &config);
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NVIC_SetPriority(ERU0_0_IRQn, 3U);
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NVIC_EnableIRQ(ERU0_0_IRQn);
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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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