GIO Input and Output of TelosB

This program can be used as a reference for the usage of General Input Output pin(GIO) of TelosB. Here i a have used the GIO output of TelosB to connect a buzzer and trigger it in every 2 seconds, making it on and off.

General input/output pin details of TelosB is given below.

GIO No.	TeloB Pin out	MSP430 processor Pin out	Note
GIO-0	10 (10 pin connector)	20	Have to short R16 in TelosB
GIO-1	7 (10 pin connector)	21	Have to short R14 in TelosB
GIO-2	3 (6 pin connector)	23
GIO-3	4 (6 pin connector)	26

In my program i have used GIO3 and hence i have connected the positive of buzzer to 4th pin of 6 pin expansion connector and negative to Gnd of TelosB.

This is the configuration for the application.

configuration BuzzerAppC {
}

implementation{
   components BuzzerC, MainC;
   components HplMsp430GeneralIOC;
   components BusyWaitMicroC;
   components new TimerMilliC() as Timer;
   components LedsC;

   BuzzerC.Boot -> MainC.Boot;
   //BuzzerC.indication2 -> HplMsp430GeneralIOC.Port23; For input
   BuzzerC.indication3 -> HplMsp430GeneralIOC.Port26; 
   BuzzerC.Timer -> Timer;
   BuzzerC.delay -> BusyWaitMicroC;
   BuzzerC.Leds -> LedsC;
}

This is the module for the application.

module BuzzerC{
   uses interface Boot;
   uses interface HplMsp430GeneralIO as indication3;
   uses interface BusyWait as delay;
   uses interface Timer as Timer;
   uses interface Leds;
}

implementation{
  uint16_t value;
  uint16_t i;
  event void Boot.booted() {
    call Timer.startPeriodic(2000);
  }
  event void Timer.fired() {
    call Leds.led0Toggle();
    call indication3.makeOutput();
    call indication3.set();
    for (i=0;i<100;i++) {
      call delay.wait(10000);
    }
    call indication3.clr();
    for (i=0;i<100;i++) {
      call delay.wait(10000);
    }
  }  
}