Using the ET Sensor

// Created on Sat March 23 2013
// the purpose of this program is to make the ET sensor work
// for the sensor to work, the sensor values must return floats, and the default is to return ints
// this program changes a specified analog port to return float values, and display them until a button 'stop' is pressed
// keywords: ET sensor, float, port
int main()
{
int port = 0; // what port should be changed to float
set_analog_pullup(port, 0); // (port #, 0 for float or non0 for ints)

set_a_button_text("Stop");
while (!a_button()) // while a button is not pressed
{
printf("%f\n", analog10(port));
msleep(1000);
}
printf("Code finished executing.\n");
return 0;
}

The ET sensor is plugged into port 0.
We want it to be sort of like a distance sensor, knowing how far away it is from something it could potentially bump into (pvc pipes).
When this code is run, the program prints .0000 over and over again, even though we put stuff in front of the sensor a millimeter in front, or have nothing in front of it.

Is there something we're doing wrong?