/* test use for printing the status and counter value through usart */
void getEncoder(void){
detachEXTI(EXTI_Line0 | EXTI_Line1 | EXTI_Line2 | EXTI_Line3);
USART_puts(USART3, "L_state:");
USART_putd(USART3, ENCODER_L.rotate);
USART_puts(USART3, " R_state:");
USART_putd(USART3, ENCODER_R.rotate);
getEncoderState(&ENCODER_L);
getEncoderState(&ENCODER_R);
USART_puts(USART3, " L_state2:");
USART_putd(USART3, ENCODER_L.rotate);
USART_puts(USART3, " R_state2:");
USART_putd(USART3, ENCODER_R.rotate);
USART_puts(USART3, " le_en:");
USART_putd(USART3, ENCODER_L.count);
USART_puts(USART3, " ri_en:");
USART_putd(USART3, ENCODER_R.count);
USART_puts(USART3, "\r\n");
/* clear encoder counter*/
ENCODER_L.count = 0;
ENCODER_R.count = 0;
attachEXTI(EXTI_Line0 | EXTI_Line1 | EXTI_Line2 | EXTI_Line3);
}
/* ENCODER RIGHT phase B */
void EXTI3_IRQHandler(){
if(EXTI_GetITStatus(EXTI_Line3) != RESET){
ENCODER_R.count++;
getEncoderState(&ENCODER_R);
EXTI_ClearITPendingBit(EXTI_Line3);
}
}
void main () {
// Current timer state
enum stateType state = COUNTING;
// Default timer value to 10 minutes
int timerValue = 600;
// Note that count = 4x number of seconds
int count = timerValue << 2;
// This is used for the blinking digit during set mode
char currentDigitValue = 0;
lcd_init();
initTimer();
initButtons();
initEncoder();
initLedDisplay();
displayTime(timerValue);
while (1)
{
// display the LED string
displayLEDs(0, displayString[displayStringIndex]);
displayLEDs(1, displayString[displayStringIndex + 1]);
displayLEDs(2, displayString[displayStringIndex + 2]);
displayLEDs(3, displayString[displayStringIndex + 3]);
// Get user input (buttons and encoder)
enum button buttonState = getButtonState();
enum encoderChange encoderState = getEncoderState();
if (state == SITTING || state == COUNTING) {
// User wants to enable set mode
if (buttonState == BUTTON_S2) {
count = 0;
timerValue = 0;
currentDigitValue = 0;
state = SETTING_DIGIT0;
bcd.digit0 = 0xA;
bcd.digit1 = 0xA;
bcd.digit2 = 0xA;
bcd.digit3 = 0xA;
lcd_display_digits(bcd);
// User wants to reset the timer
} else if (buttonState == BUTTON_S3) {
count = timerValue << 2;
state = SITTING;
displayTime(timerValue);
// User wants to start the timer
} else if (state == SITTING && buttonState == BUTTON_S4) {
count = timerValue << 2;
state = COUNTING;
displayTime(count >> 2);
}
}
// If we're already in set mode
else if (state == SETTING_DIGIT0
