Chapter 9 – Digital Meets Analog – ADC and DAC

0);

t, 10);

C

g is ");

C, and copy the Demonstrator and PC_Comm .c and .h

t. Change the Demonsrator.c by adding the following

ctions. Compile, load, and test.

nclude "Demonstrator.h"

USA

y to communicate.\r");

cally

he ADC demo.\r");

;

e value\r");

ADCresult = ADC_read();
intpart = ADCresult/50;
fractpart = ADCresult%50;

itoa(intpart, voltintpart, 1
itoa(fractpart, voltfractpar

// Send the voltage to the P
sendString("The readin
sendChar(voltintpart [0]);
sendChar('.');
sendChar(voltfractpart [0]);
sendString(" volts.\r");
}

The initializer and the parseInput functions:

Open a new directory, AD
files from the last projec
functions and the above fun

#i
i

nclude "PC_Comm.h"

void initializer()
{
// Calibrate the oscillator:
OSCCAL_calibration();

// Initialize the USART
RTinit();

ADC_init(1);

// say hello
sendString("\rPC_Comm.c read
// identify yourself specifi
ndString("You are talking to t se
// show commands
sendString("Commands:\r");
sendString("light - returns a light value\r");
sendString("temp - returns the temperature in fahrenheit\r")
sendString("volt - returns a voltag

}