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taror002_lab2_part1.c
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taror002_lab2_part1.c
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/* Partner(s) Name & E-mail: Takbir Islam tisla002@ucr.edu
* Lab Section: 026
* Assignment: Lab #2 Exercise # 1
* Author: Tanish Arora and Takbir Islam
*
* I acknowledge all content contained herein, excluding template or example
* code, is my own original work.
*/
#include <avr/io.h>
// Bit-access function
unsigned char SetBit(unsigned char x, unsigned char k, unsigned char b) {
return (b ? x | (0x01 << k) : x & ~(0x01 << k));
}
unsigned char GetBit(unsigned char x, unsigned char k) {
return ((x & (0x01 << k)) != 0);
}
int main(void)
{
DDRA = 0x00; PORTA = 0xFF; // Configure port A's 8 pins as inputs
DDRB = 0x00; PORTB = 0xFF; // Configure port B's 8 pins as outputs,
DDRC = 0xFF; PORTC = 0x00; // Configure port B's 8 pins as outputs,
// initialize to 0s
unsigned char tmpC=0x00;
//while loop
while (1)
{
unsigned char bit_count = 0x00; // to count the number of 1's
unsigned char cnt; //iterator
//lets do for A first
for (cnt=0;cnt < 8; cnt++)
{
tmpC=PINA;
if (GetBit(tmpC,cnt))
{
bit_count++;
}
//for PinB
tmpC=PINB;
if (GetBit(tmpC,cnt))
{
bit_count++;
}
}
PORTC=bit_count;
}
return 0;
}