Question

/* * Blinkyl.c */ #include <avr/io.h> #include <util/delay.h> int main (void) { DDRB=0x2; // set port PB1 to be an output (equivalent to 0b00000010) while (1) { PORTB=~PORTB; //change sign of port output _delay_ms (250); // this function is in library delay.h and can force a //maximum delay of 263ms } }

          /*
* Blinkyl.c
*/
#include <avr/io.h>
#include <util/delay.h>
int main (void)
{
DDRB=0x2; // set port PB1 to be an output (equivalent to 0b00000010)
while (1)
{
PORTB=~PORTB; //change sign of port output
_delay_ms (250); // this function is in library delay.h and can force a
//maximum delay of 263ms
}
}

/*
* Blinkyl.c
*/
#include <avr/io.h>
#include <util/delay.h>
int main (void)

DDRB=0x2; // set port PB1 to be an output (equivalent to 0b00000010)
while (1)

PORTB= PORTB; //change sign of port output
delayms (250); // this function is in library delay.h and can force a
//maximum delay of 263ms

Added by Ruben H.

Computer Science and Information Technology

Trishna Knowledge Systems 2018 Edition

Instant Answer

Solved by Expert Samuel Goyette

Step 1

First, we need to modify the code to use 3 pins for the LEDs. Let's say we choose pins PB1, PB2, and PB3. We need to set these pins as outputs in the DDRB register. So, modify the line `DDRB = 0x02;` to `DDRB = 0x0E;` (0b00001110). Show more…

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Thanks for your feedback!

The C code shown below can be used to blink a single LED using an Arduino board. Modify your C program so that 3 LEDs can flash in a desired sequence. The 3 LEDs should light one at a time in sequence, and stay lit for at least 200ms. The LEDs should never be all on at the same time. It does not matter which pins you choose to use. ```c /* Blinkyl.C */ #include <avr/io.h> #include <util/delay.h> int main(void) { DDRB = 0x02; // set port PB1 to be an output (equivalent to 0b00000010) while(1) { PORTB = ~PORTB; // change state of port output _delay_ms(250); // this function is in library delay.h and can force a maximum delay of 263ms } } ```