Oscilloscope Signals

[roaddogg]

Greetings,

I am stuck on a topic for TAFE and cannot get my head around it.

I need to Write a program to use a D to A converter board to output various signals which can be viewed on an oscilloscope.

I have made the Triangle wave, which works, but am stuck on the sine wave.

Code for sine wave thus far is:

int val;
int DCBias = 128;
int steps = 128;
int lp;


double dg = 3.141592654 / (steps/2);
val = sin(lp * dg) * 127 + DCBias;


for (lp = 0; lp <= 128; lp ++)
{ outp (DataPort,val);
delay (20);
}

printf("Press any key to exit Sine Wave output\n");
while (!kbhit()) break();

It will not compile and I keep getting errors. I think the problem lies within the last line of while the keyboard is hit, perform a break.

Thanks in advance for any help.

[Banfa]

post your errors

[JosAH]

Greetings,

I am stuck on a topic for TAFE and cannot get my head around it.

I need to Write a program to use a D to A converter board to output various signals which can be viewed on an oscilloscope.

I have made the Triangle wave, which works, but am stuck on the sine wave.

Code for sine wave thus far is:



It will not compile and I keep getting errors. I think the problem lies within the last line of while the keyboard is hit, perform a break.

Thanks in advance for any help.

'break' is not a function and you don't even want to break out of that loop as long
as there is no key hit yet. Also, I think that the same signal value is sent to that
device for 129 times.

kind regards,

Jos