/**
* Displays the given `mesg` on the LCD while waiting for the user to press one of the
* push buttons.
*
* Assumes that `init_push_buttons()` has been called before this was called.
* If the given `mesg` is either NULL or the empty string, the LCD screen is not changed.
* Otherwise, the LCD is cleared and the given `mesg` is printed to it. If `mesg` was
* printed, then it will be cleared before returning.
*/
uint8_t wait_button(char *mesg)
{
uint8_t b;
bool print_mesg = ((mesg != 0) && (*mesg != '\0'));
// Wait to make sure that function does not immediately return because of a previous input.
wait_ms(200);
if (print_mesg) {
lcd_clear();
lcd_puts(mesg);
}
// Wait while the button is not being pushed.
do {
b = read_push_buttons();
} while (b == 0);
if (print_mesg) {
lcd_clear();
}
// Wait to make sure that the current press does not affect subsequent input.
wait_ms(200);
return b;
}
void part1()
{
char button = 1;
while(1) { // loop indefinitely
button = read_push_buttons();
lprintf("Button: %d", button);
}
}
int main( void )
{
char buffer[21] = {'\0'};
int i = 0;
USART_Init ( calcUBRR() );
init_push_buttons();
lcd_init();
while(1){
switch(read_push_buttons())
{
case '6': USART_Transmit('Y');
break;
case '5': USART_Transmit('N');
break;
case '4': Transmit_String("AHHHH!!!!");
break;
case '3': Transmit_String("This");
break;
case '2': Transmit_String("computer is");
break;
case '1': Transmit_String("broken!");
break;
}
wait_ms(100);
/*
unsigned char new_letter = USART_Receive();
if(new_letter != 13)
{
buffer[i++] = new_letter;
}
USART_Transmit(new_letter);
lprintf("%d, %c", i, new_letter);
if(i == 20 || new_letter == 13)
{
if(new_letter == 13)
{
USART_Transmit(10);
}
i = 0;
lprintf("%s", buffer);
for(int j=0;j<20;j++)
{
buffer[j] = 0;
}
}
*/
}
}
static void handle200msTick()
{
/* No need to disable other interrupts while handling
* since only the flags are volatile
*/
/* Poll buttons and handle increment/decrement */
uint8_t button = read_push_buttons();
switch (button)
{
case 6:
hours++;
break;
case 5:
hours--;
break;
case 4:
minutes++;
break;
case 3:
minutes--;
break;
case 2:
seconds++;
break;
case 1:
seconds--;
break;
case 0:
break;
}
/* Handle rollovers while pushing buttons. Does not cascade*/
if (hours == 24)
hours = 0;
if (hours > 24)
hours = 23;
if (minutes == 60)
minutes = 0;
if (minutes > 60)
minutes = 59;
if (seconds == 60)
seconds = 0;
if (seconds > 60)
seconds = 59;
/* Formatting string and print */
lprintf("%02d:%02d:%02d", hours, minutes, seconds);
}
