In my microprocessing class our teacher has made us program a MSP430G2553 to do light up 8 led's in a certain sequence when a button is pressed. The micro is attached to a Breadboard that is then connected to two buttons and the 8 led's. When the power is connected none of the lights will be lit. When one button is pressed a sequence will begin and continue until the person presses both buttons at the same time. The same goes for the second button. I have been able to achieve two of the three parts. The only part I have trouble is getting out of the while loop/pressing the 2 buttons at the same time. I have tried multiple methods but with no results. I have attached the code so you could help me out with this.
p.s. Teacher is horrible assumes everyone in class can already program / no book to read from. Is there any websites/books that I could use to help me understand this material?
/*
* main.c
*/
#include <MSP430G2553.h>
#define DELAY 159000
#define DELAY_1 1000000
void main()
{
WDTCTL = WDTPW+WDTHOLD;
P1DIR = 0xFF;
P2REN |= (BIT3|BIT4);
P2OUT &= (~(BIT3|BIT4));
unsigned int i;
while(1)
{
P1OUT = 0x00;
if(P2IN&BIT3)
{
while(1)
{
P1OUT = BIT3|BIT4;
_delay_cycles(DELAY);
P1OUT = BIT2|BIT5;
_delay_cycles(DELAY);
P1OUT = BIT1|BIT6;
_delay_cycles(DELAY);
P1OUT = BIT0|BIT7;
_delay_cycles(DELAY);
}
}
if(P2IN&BIT4)
{
while(1)
{
P1OUT = BIT0|BIT2;
for(i=0; i<6; i++)
{
_delay_cycles(DELAY_1);
P1OUT = P1OUT << 1;
}
P1OUT = BIT7|BIT5;
for(i=0; i<6; i++)
{
_delay_cycles(DELAY_1);
P1OUT = P1OUT >> 1;
}
}
}
}
}
