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Problem with On-board ADXL335 accelerometer on MSP-EXP430FR5739 FRAM Experimenter Board

ALI GIVE
Prodigy 10 points
Other Parts Discussed in Thread: MSP-EXP430FR5739

Hi Guys,

I just started working with the MSP-EXP430FR5739 FRAM Experimenter Board and on Mode 3 of the included sample code, I believe the program reads one axis reading from the accelerometer and compares it to the calibrated value. what I am trying to do is to use the On-board ADXL335 accelerometer to get the acceleration values in X,Y, Z axis. I was wondering if you guys can provide me with a simple sample code or some help to modify the existing code for this evaluation board.

Thank you so much in advance.

  • 0
    Prodigy 85 points

    here is the sample code:

    const int xpin = 0;
    const int ypin = 1;
    const int zpin = 2;

    void setup()
    {
    Serial.begin(9600);
    }

    void loop()
    {
    Serial.print("BEG");
    Serial.print("X"); Serial.print(analogRead(xpin));
    Serial.print("Y"); Serial.print(analogRead(ypin));
    Serial.print("Z"); Serial.print(analogRead(zpin));
    Serial.println();
    delay(50);
    }

    this code gives the acceleration values in all three directions.

    could you please tell me how can i observe the accelerometer output???

  • 0 in reply to Rohit Tiwari
    Guru 58965 points

    You can observe the output at the other end of your Serial print -- another device such as  PC or something like that.

    You need to be aware that gravity is equivalent to a big acceleration (> 30 ft/sec/sec). It Z is not aligned with the plumb-line, all three readings are no where near zero even when there is no apparent "acceleration" at all.

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