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valerybriz

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    valerybriz got a reaction from energia in Bluetooth module HC-06 not w orking on launchpad   
    IT
  2. Like
    valerybriz reacted to oPossum in FFT on ENERGIA   
    For a sample rate 'S' in units of samples per second...
     
    F[0]: 0 Hz (DC)
    F[1]: S * 1 / 8 Hz
    F[2]: S * 2 / 8 Hz
    F[3]: S * 3 / 8 Hz
    F[4]: S * 4 / 8 Hz
    F[5]: S * -3 / 8 Hz
    F[6]: S* - 2 / 8 Hz
    F[7]: S * -1 / 8 Hz
     
    There is also a mistake in the code
    this:
    Real[j]=Real[j]+ f*sin((2*3.14*u*j/h)); // Vector parte Real
    Imag[j]=Imag[j]+ f*cos(-2*3.14*u*j/h); // Vector parte Imag
     
    should be:
    Real[j] += f * cos(2 * 3.14 * u * j / h); // Vector parte Real
    Imag[j] += f * -sin(2 * 3.14 * u * j / h); // Vector parte Imag
     
  3. Like
    valerybriz reacted to Rickta59 in Hardware UART not working in Linux   
    Other people running ubuntu 12.04 who have used the launchpad with  it.
     
    http://forum.43oh.com/topic/2296-linux-serial-communication-working-wmodified-cdc-acm-module/
     
    You also need to create a udev entry so that non-root users can access /dev/ttyACM0.  Thinking about
    it ... that is probably your problem.  Sorry I didn't mention it earlier.
     

    $ cat /etc/udev/rules.d/61-tilaunchpad.rules # This file allows access to TI launchpad # See udev(7) for syntax. # SUBSYSTEM=="usb",ATTRS{idVendor}=="0451",ATTRS{idProduct}=="f432",MODE="0666"
     
    search 43oh.com for 'udev rules' for more info.
    rules.zip
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