Intel Edison GPIO breakout, 1.8V or 3.3V expected?

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Hello,

I have the Intel Edison connected to SparkFun’s Base Block, then to SF’s GPIO block, then to the battery block (which is switched off and powering all thru USB).

When I turn on 4 of the GPIO (labeled GP44,45,46,47), I get switching voltages of 1.8V (looks noisy on scope) and clean 3.3V. I have the jumper on the GPIO board as sold, connecting to 3.3V.

When I toggle between 0 and 3.3V, I get 1.8V and 3.3V.

Anyone have any idea what is going on? I have no external hardware attached.

Using this code C++ Eclipse IDE

int main()
{
	// check that we are running on Edison
	mraa_platform_t platform = mraa_get_platform_type();
	if((platform != MRAA_INTEL_GALILEO_GEN1) &&
			(platform != MRAA_INTEL_GALILEO_GEN2) &&
			(platform != MRAA_INTEL_EDISON_FAB_C)) {
		std::cerr << "Unsupported platform, exiting" << std::endl;
		return MRAA_ERROR_INVALID_PLATFORM;
	}

	// create a gpio object from MRAA LIBRARY
	/*     GPIO 44 = MRAA 31
		GPIO 45 = MRAA 45
		GPIO 46 = MRAA 32
		GPIO 47 = MRAA 46
	*/
	mraa::Gpio* Buzz1 = new mraa::Gpio(31);
	mraa::Gpio* Buzz2 = new mraa::Gpio(45);
	mraa::Gpio* Buzz3 = new mraa::Gpio(32);
	mraa::Gpio* Buzz4 = new mraa::Gpio(46);

	// set the pin as output
		if(Buzz1->dir (mraa::DIR_OUT) != MRAA_SUCCESS) {
		std::cerr << "Can't set digital pin as output, exiting" << std::endl;
		return MRAA_ERROR_UNSPECIFIED;
		}
		if(Buzz2->dir (mraa::DIR_OUT) != MRAA_SUCCESS) {
		std::cerr << "Can't set digital pin as output, exiting" << std::endl;
		return MRAA_ERROR_UNSPECIFIED;
		}
		if(Buzz3->dir (mraa::DIR_OUT) != MRAA_SUCCESS) {
		std::cerr << "Can't set digital pin as output, exiting" << std::endl;
		return MRAA_ERROR_UNSPECIFIED;
		}
		if(Buzz4->dir (mraa::DIR_OUT) != MRAA_SUCCESS) {
		std::cerr << "Can't set digital pin as output, exiting" << std::endl;
		return MRAA_ERROR_UNSPECIFIED;
		}

	// loop forever toggling the digital output every second
		for(;;) {
		//d_pin->write(0);
		//sleep(1);
		//std::cout<<"hello World! ";
		//Buzz1->write(1);
		//Buzz2->write(1);
		//Buzz3->write(1);
		Buzz4->write(1);
		sleep(5);
		Buzz4->write(0);
		sleep(5);
		}

	return MRAA_SUCCESS;
}