how to generate 800HZ signal using 28335

Hi Sham,

it's better to use the ePWM for this requirement.

For more informations please take a look: http://focus.ti.com/lit/ug/sprug04a/sprug04a.pdf

With best regards,

Chris

You said that you'd like to have a 400 Hz interrupt service (1/400Hz = 2500 microseconds) - so why did you initialize the timer 0 to 625 milliseconds?

A correct initialization of Timer0 would look like this:

InitCpuTimers();

ConfigCpuTimer(&CpuTimer0, 150, 2500);

PieCtrlRegs.PIEIER1.bit.INTx7 = 1;

IER |= 1;

EINT;

puTimer0Regs.TCR.bit.TSS = 0; // start timer

Of course, you have to initialize the PIE vector table as well.

A CPU timer is well suited for your purpose.

Dear sir,Frank Bormannf


Thanks for replying to my query.I've just started working on DSP.Your teaching ROM is of great help to me. I am using 28335 control card to acquire
16 bit data from ADS8556 EVM.My requirement is to take 16 samples in one fundamental cycle of 50 HZ i.e (exact 800hz sampling frequency).I need to generate
start of conversion(50% duty cycle) signal as shown in the figure below. kindly suggest me the proper resource/configuration that should be used to generate the signal.
Also i request you to give a skeletal program to configure external interrupt(XINT) on 28335 control card. I intend to connect the end of conversion signal to XINT.Kindly help me sir.

                              S/c signal

Thanking you,

sham M.V

Phd scholar, National institute of technology,India

Sorry but I cannot view your image. Please try to add the image as file attachment.

Dear sir, sorry for the trouble actually i have insered the image but later on it did not uploaded. I am forwarding the Start of conversion signal for your kind reference.

Thanking you,

sham m v