Graph problem in CCS4.2

Hanson He

I create one project for MSP430 launchPad Board, just want to use graph single time function.

I just count value for variable. increase its value in while() program. I just want to get Triangle wave for graph single time analysis. But I got the waveform which is not my want. Does anyone face the same problem with me. below is my program and waveform form CCS IDE.

unsigned char count;
unsigned char data;

void main(void)
{
while(1)
{
if(count<128)
{
++count;
++data;
}
if(count>=128){data--;if(data==0)count=0;}

}
My CCS IDE picture shot as blow.

over 14 years ago

0 Hanson He over 14 years ago

TI__Intellectual 1485 points

Why Y axi value is not correct? and the waveform is not ok, I also change Graph property as below, but after 10 seconds, the waveform change to another waveform. Why waveform could not show my real waveform? Whether my setting is error?

0 Raju Pandey over 14 years ago in reply to Hanson He

TI__Intellectual 1785 points

Hansen,

For the data value of the graph, you need to enter an address. You should try &data, instead of just data.
Raj

0 Hanson He over 14 years ago in reply to Raju Pandey

TI__Intellectual 1485 points

Thank you very much, but when i set &data, i got the waveform as below, how to check my real data value and Y axis showing value, i find it is different.

0 Hanson He over 14 years ago in reply to Hanson He

TI__Intellectual 1485 points

my graph property setting as below:

0 Hanson He over 14 years ago in reply to Hanson He

TI__Intellectual 1485 points

when I set Q_Value=8, 8 bit unsigned, whether Y axis value 1 equal 256, 0.5 equal 128?

when I set Q_Value=10, whether Y axis value 1 equal 1024, 0.125 equal (1/1024)*128?

Whether have the direct format setting for this exchanging?

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Graph problem in CCS4.2