Getting Started

Chapter 9 – Digital Meets Analog – ADC and DAC

. When a table entry is found that is less
esult we break and i equals the temperature
in Fahrenheit. Pretty clever, huh? Wish I thought of it,
d it from the WinAVR version of the Butterfly
quit owning up to all this theft and from now on
if you see something clever (the good kind of clever) just
I stole it. */

1; i++)

ord(&TEMP_Fahrenheit_pos[i]))

}

/* Next we convert the integer ADCresult to a string that

rom the

ur file.

use the itoa() function, which converts and

ASCII character array terminated with '\0'.

0);

e temperature to the PC

("The temperature is ");

Fahrenheit.\r");

know where the “@#%#&*#!!!!” comes

0','0','0','\0'};

','0','0','\0'};

as in the table

than the ADC r

but I borrowe

code. I'll

assume that

for (i=0; i<=14
{
if (ADCresult > pgm_read_w
{
break;
}

we can transmit to the PC. Let’s use a function f
standard library. We add #include <stdlib.h> to o
Then we can
integer to an
*/

itoa(i, fahr, 1

// Send th
sendString
sendString(fahr);
sendString(" degrees

}

The @#%#&*#!!!! Volt Meter

If you read the debugging tale, you
from.

void getVolt()
{
char voltintpart[]= {'
char voltfractpart[]= {' 0
int intpart = 0;
int fractpart = 0;
int ADCresult = 0;