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69 lines
1.1 KiB
C++
69 lines
1.1 KiB
C++
/*
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* https://github.com/mrshu/GPIOlib
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* Copyright (c) 2011, Copyright (c) 2011 mr.Shu
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* All rights reserved.
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*
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* Modified on 24 June 2012, 11:06 AM
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* File: gpio.cpp
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* Author: purinda (purinda@gmail.com)
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*
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*/
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#include "gpio.h"
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GPIO::GPIO() {
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}
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GPIO::~GPIO() {
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}
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void GPIO::open(int port, int DDR)
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{
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FILE *f;
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f = fopen("/sys/class/gpio/export", "w");
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fprintf(f, "%d\n", port);
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fclose(f);
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char file[128];
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sprintf(file, "/sys/class/gpio/gpio%d/direction", port);
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f = fopen(file, "w");
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if (DDR == 0) fprintf(f, "in\n");
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else fprintf(f, "out\n");
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fclose(f);
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}
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void GPIO::close(int port)
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{
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FILE *f;
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f = fopen("/sys/class/gpio/unexport", "w");
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fprintf(f, "%d\n", port);
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fclose(f);
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}
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int GPIO::read(int port)
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{
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FILE *f;
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char file[128];
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sprintf(file, "/sys/class/gpio/gpio%d/value", port);
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f = fopen(file, "r");
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int i;
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fscanf(f, "%d", &i);
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fclose(f);
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return i;
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}
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void GPIO::write(int port, int value){
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FILE *f;
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char file[128];
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sprintf(file, "/sys/class/gpio/gpio%d/value", port);
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f = fopen(file, "w");
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if (value == 0) fprintf(f, "0\n");
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else fprintf(f, "1\n");
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fclose(f);
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}
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