Connecting A USB Drive

Finding It

Note that “mydrivename” can be anything you want it to be, its the name you will use to connect to it

string CommandResult;
int DriveMounted = 0;
	
	CommandResult = do_console_command_get_result((char*)"ls -l /dev/disk/by-uuid/");
	//cout << "Drive list result: " << CommandResult << endl;
	if (CommandResult.find("sda1") != std::string::npos)
	{
		//----- USB DRIVE FOUND -----
		//cout << "USB Device SDA1 Found" << endl;

		//----- MOUNT IT -----
		CommandResult = do_console_command_get_result((char*)"sudo mkdir /media/mydrivename 2>&1");			//" 2>&1" so we get the error output if the command fails
		CommandResult += do_console_command_get_result((char*)"sudo chown -R pi:pi /media/mydrivename 2>&1");
		CommandResult += do_console_command_get_result((char*)"sudo mount /dev/sda1 /media/mydrivename -o uid=pi,gid=pi 2>&1");
		DriveMounted = 1;
		if (CommandResult.find("already mounted") != std::string::npos)	//Check for error
			DriveMounted = 0;
	}
	else if (CommandResult.find("sdb1") != std::string::npos)
	{
		//----- USB DRIVE FOUND -----
		//cout << "USB Device SDB1 Found" << endl;

		//----- MOUNT IT -----
		CommandResult = do_console_command_get_result((char*)"sudo mkdir /media/mydrivename 2>&1");
		CommandResult += do_console_command_get_result((char*)"sudo chown -R pi:pi /media/mydrivename 2>&1");
		CommandResult += do_console_command_get_result((char*)"sudo mount /dev/sdb1 /media/mydrivename -o uid=pi,gid=pi 2>&1");
		DriveMounted = 1;
		if (CommandResult.find("already mounted") != std::string::npos)	//Check for error
			DriveMounted = 0;
	}
	else if (CommandResult.find("sdc1") != std::string::npos)
	{
		//----- USB DRIVE FOUND -----
		//cout << "USB Device SDC1 Found" << endl;

		//----- MOUNT IT -----
		CommandResult = do_console_command_get_result((char*)"sudo mkdir /media/mydrivename 2>&1");
		CommandResult += do_console_command_get_result((char*)"sudo chown -R pi:pi /media/mydrivename 2>&1");
		CommandResult += do_console_command_get_result((char*)"sudo mount /dev/sdc1 /media/mydrivename -o uid=pi,gid=pi 2>&1");
		DriveMounted = 1;
		if (CommandResult.find("already mounted") != std::string::npos)	//Check for error
			DriveMounted = 0;
	}
	if (!DriveMounted)
	{
		//----- NO USB DRIVE FOUND -----
		
		return;
	}
	
	string my_file_path = "/media/mydrivename/hello.txt";

Releasing It After Use

	CommandResult = do_console_command_get_result((char*)"sudo umount /media/mydrivename 2>&1");
	if (CommandResult.find("busy") != std::string::npos)
	{
		bcm2835_delay(250);
		CommandResult = do_console_command_get_result((char*)"sudo umount /media/mydrivename 2>&1");
	}
	CommandResult = do_console_command_get_result((char*)"sudo rm -r /media/mydrivename");		//Remove the directory ready for next time