Initial commit

CMakeLists.txt

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+cmake_minimum_required(VERSION 2.8)
+project( camcv )
+SET(COMPILE_DEFINITIONS -Werror)
+
+#OPENCV
+find_package( OpenCV REQUIRED )
+
+link_directories( /home/pi/libs/libfacerec ) 
+
+set (GL_SCENE_SOURCES
+gl_scenes/models.c
+gl_scenes/mirror.c
+gl_scenes/yuv.c
+gl_scenes/sobel.c
+gl_scenes/square.c
+gl_scenes/teapot.c)
+SET(CMAKE_EXE_LINKER_FLAGS "-lpthread")
+include_directories(/home/pi/camcv/raspicam/gl_scenes)
+include_directories(/opt/vc/include)
+include_directories(/opt/vc/include/EGL)
+include_directories(/opt/vc/userland-master/host_applications/linux/libs/bcm_host/include)
+include_directories(/opt/vc/userland/interface/vcos)
+include_directories(/opt/vc/userland)
+include_directories(/opt/vc/userland/interface/vcos/pthreads)
+include_directories(/opt/vc/userland/interface/vmcs_host/linux)
+include_directories(/home/pi/camcv)
+include_directories(/home/pi/camcv/raspicam)
+add_executable(camcv RaspiCamControl.c RaspiCLI.c RaspiPreview.c 
+GPIOClass.cpp 
+camcv.cpp RaspiTex.c RaspiTexUtil.c tga.c ${GL_SCENE_SOURCES})
+target_link_libraries(camcv m /opt/vc/lib/libmmal_core.so /opt/vc/lib/libmmal_util.so /opt/vc/lib/libmmal_vc_client.so /opt/vc/lib/libvcos.so /opt/vc/lib/libbcm_host.so /opt/vc/lib/libGLESv2.so /opt/vc/lib/libEGL.so /home/pi/libs/libfacerec/libopencv_facerec.a wiringPi pthread ${OpenCV_LIBS})

GPIOClass.cpp

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+#include <fstream>
+#include <string>
+#include <iostream>
+#include <sstream>
+#include "GPIOClass.h"
+
+using namespace std;
+
+GPIOClass::GPIOClass(){
+    this->gpionum = "4"; //GPIO4 is default
+}
+
+GPIOClass::GPIOClass(string gnum){
+    this->gpionum = gnum;  //Instatiate GPIOClass object for GPIO pin number "gnum"
+}
+
+int GPIOClass::export_gpio(){
+    string export_str = "/sys/class/gpio/export";
+    ofstream exportgpio(export_str.c_str()); // Open "export" file. Convert C++ string to C string. Required for all Linux pathnames
+    if (exportgpio < 0){
+        cout << " OPERATION FAILED: Unable to export GPIO"<< this->gpionum <<" ."<< endl;
+        return -1;
+    }
+
+    exportgpio << this->gpionum ; //write GPIO number to export
+    exportgpio.close(); //close export file
+    return 0;
+}
+
+int GPIOClass::unexport_gpio(){
+    string unexport_str = "/sys/class/gpio/unexport";
+    ofstream unexportgpio(unexport_str.c_str()); //Open unexport file
+    if (unexportgpio < 0){
+        cout << " OPERATION FAILED: Unable to unexport GPIO"<< this->gpionum <<" ."<< endl;
+        return -1;
+    }
+
+    unexportgpio << this->gpionum ; //write GPIO number to unexport
+    unexportgpio.close(); //close unexport file
+    return 0;
+}
+
+int GPIOClass::setdir_gpio(string dir){
+    string setdir_str ="/sys/class/gpio/gpio" + this->gpionum + "/direction";
+    ofstream setdirgpio(setdir_str.c_str()); // open direction file for gpio
+        if (setdirgpio < 0){
+            cout << " OPERATION FAILED: Unable to set direction of GPIO"<< this->gpionum <<" ."<< endl;
+            return -1;
+        }
+
+        setdirgpio << dir; //write direction to direction file
+        setdirgpio.close(); // close direction file
+        return 0;
+}
+
+int GPIOClass::setval_gpio(string val){
+    string setval_str = "/sys/class/gpio/gpio" + this->gpionum + "/value";
+    ofstream setvalgpio(setval_str.c_str()); // open value file for gpio
+        if (setvalgpio < 0){
+            cout << " OPERATION FAILED: Unable to set the value of GPIO"<< this->gpionum <<" ."<< endl;
+            return -1;
+        }
+
+        setvalgpio << val ;//write value to value file
+        setvalgpio.close();// close value file
+        return 0;
+}
+
+int GPIOClass::getval_gpio(string& val){
+    string getval_str = "/sys/class/gpio/gpio" + this->gpionum + "/value";
+    ifstream getvalgpio(getval_str.c_str());// open value file for gpio
+    if (getvalgpio < 0){
+        cout << " OPERATION FAILED: Unable to get value of GPIO"<< this->gpionum <<" ."<< endl;
+        return -1;
+            }
+
+    getvalgpio >> val ;  //read gpio value
+
+    if(val != "0")
+        val = "1";
+    else
+        val = "0";
+
+    getvalgpio.close(); //close the value file
+    return 0;
+}
+
+string GPIOClass::get_gpionum(){
+    return this->gpionum;
+}

GPIOClass.h

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+#ifndef GPIO_CLASS_H
+#define GPIO_CLASS_H
+
+#include <string>
+using namespace std;
+/* GPIO Class
+ * Purpose: Each object instantiated from this class will control a GPIO pin
+ * The GPIO pin number must be passed to the overloaded class constructor
+ */
+class GPIOClass
+{
+public:
+    GPIOClass();  // create a GPIO object that controls GPIO4 (default
+    GPIOClass(string x); // create a GPIO object that controls GPIOx, where x is passed to this constructor
+    int export_gpio(); // exports GPIO
+    int unexport_gpio(); // unexport GPIO
+    int setdir_gpio(string dir); // Set GPIO Direction
+    int setval_gpio(string val); // Set GPIO Value (putput pins)
+    int getval_gpio(string& val); // Get GPIO Value (input/ output pins)
+    string get_gpionum(); // return the GPIO number associated with the instance of an object
+private:
+    string gpionum; // GPIO number associated with the instance of an object
+};
+
+#endif