Msp430 Clock Speed

[Adson 0]

Hello there,

 

*new*

Found out the speed of my clock.

The problem now is I don't think my interrupt is working.

*new*

 

I am doing a project where I have to read in a square wave and determine the frequency of the wave then output that number.

I was wondering if someone could help me out by telling me what the base clock speed is.  I am programming through energia, idk if that will effect the speed at all, but just in case I am.

 

Hope someone can help me out

 

Thanks a bunch!!

 

if you don't know what energia is energia.nu is where you can find information

 

My code so far

 This example code is in the public domain.
 
 http://arduino.cc/en/Tutorial/AnalogInput
 
 */



//LED PINS
int ledPin0 = 2;// select the pin for the LED
int ledPin1 = 3;
int ledPin2 = 4;
int ledPin3 = 5;
int ledPin4 = 6;

//Inputs
int sensorPin = A5;    // select the input pin for the potentiometer

//Variables
int temp=0;
//int count=0;
int count1=0;
int number=5;
void setup() {
  // declare the ledPin as an OUTPUT:
  pinMode(ledPin0, OUTPUT);
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin3, OUTPUT);
  pinMode(ledPin4, OUTPUT);
  
  attachInterrupt(sensorPin,inter,RISING);
}

void loop() { 
  //Check for Frequency
  number = 1000000/count1;
  
  //Make temp Variable to change
  temp = number;
  
  //Coverts that number to binary
  //Checks if it need to turn on light 5
  if(temp >= 16){
    digitalWrite(ledPin4, HIGH);
    temp = temp - 16;
  }
  else{
    digitalWrite(ledPin4, LOW);
  }
  //Checks for light 4  
  if(temp >= 8){
    digitalWrite(ledPin3, HIGH);
    temp = temp-8;
  }
  else{
    digitalWrite(ledPin3, LOW);
  }
   //Checks for light 3
  if(temp >= 4){
    digitalWrite(ledPin2, HIGH);
    temp = temp - 4;
  }
  else{
    digitalWrite(ledPin2, LOW);
  }
  //Checks for light 2  
  if(temp >= 2){
    digitalWrite(ledPin1, HIGH);    
  }
  else{
    digitalWrite(ledPin1, LOW);
  }
  //Checks for light 1  
  if (number%2 == 1){
   digitalWrite(ledPin0, HIGH);
  }
  else{
  digitalWrite(ledPin0, LOW);
  }
   count1 =0;           
}
//Interuppt Routine
void inter()
{
  count1=count1++;
}

[cubeberg 540]

16mhz is default for Energia for the 2553.  If you go to Tools -> Board, you'll see which option you have selected.

[Adson 0]

Thank you for the tip I am using a 1MHz clock.  The problem now is I don't think my interrupt it working correctly.  I am not getting any output to my leds.

 

PS. I also updated the code, it is now current

[jazz 209]

I am doing a project where I have to read in a square wave and determine the frequency of the wave then output that number.

 

http://forum.43oh.com/topic/3317-msp430f550x-based-frequency-meter