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Touch sensor multiplexer 
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Joined: Fri Oct 24, 2008 11:35 am
Posts: 3
Post Touch sensor multiplexer
I just want to know how to get the values from the touch sensor multiplexer

Fri Oct 24, 2008 11:39 am

Joined: Fri Sep 19, 2008 1:22 am
Posts: 200
Post Re: Touch sensor multiplexer
There is a Touch_Mux.c sample file in the Sample Programs/FTC Training Programs/ folder.

Jeff McBride
Benson Robotics Club

Fri Oct 24, 2008 12:17 pm
Site Admin
Site Admin

Joined: Wed Jan 24, 2007 10:42 am
Posts: 620
Post Re: Touch sensor multiplexer
Touch Mux Sample Program.

1. Define the names for the bit-map buttons.
2. Do a logical "and" to check to see if each button is pressed.

#pragma config(Sensor, S1,     touchmux1,           sensorHiTechnicTouchMux)
//*!!Code automatically generated by 'ROBOTC' configuration wizard               !!*//

//Bit map definitions
#define mux_button1 0x01
#define mux_button2 0x02
#define mux_button3 0x04
#define mux_button4 0x08

task main()
  nxtDisplayTextLine(0, "Touch MUX: Port 1");  //Display Title Text on LCD

  while(1) //Loop Forever
    //Series of 4 "if" statements
    //The '&' symbol is a "logical and" used to read the bit-map from the
    //touch multiplexer.

    if(SensorValue(touchmux1) & mux_button1)  //Check if pressed
      nxtDisplayTextLine(1, "Btn 1: Pressed");  //Displayed if pressed
      nxtDisplayTextLine(1, "Btn 1:");  //display if not pressed

    if(SensorValue(touchmux1) & mux_button2)
      nxtDisplayTextLine(2, "Btn 2: Pressed");
      nxtDisplayTextLine(2, "Btn 2:");

    if(SensorValue(touchmux1) & mux_button3)
      nxtDisplayTextLine(3, "Btn 3: Pressed");
      nxtDisplayTextLine(3, "Btn 3:");

    if(SensorValue(touchmux1) & mux_button4)
      nxtDisplayTextLine(4, "Btn 4: Pressed");
      nxtDisplayTextLine(4, "Btn 4:");

Timothy Friez
ROBOTC Developer - SW Engineer

Fri Oct 24, 2008 2:34 pm

Joined: Fri Oct 24, 2008 11:35 am
Posts: 3
Post Re: Touch sensor multiplexer
thanks a lot.

Thu Oct 30, 2008 2:59 pm
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