void moduleinit() {
DDRD = 0xf0;
DDRB = 0x03;
// initialize lcd
init_lcd();
writecommand(0x01);
// leds (blue wire)
DDRD |= (1 << PD2) | (1 << PD3);
// rotary encoder (yellow wire)
DDRC &= ~(1 << PC1) | ~(1 << PC2);
PORTC |= (1 << PC1) | (1 << PC2);
// buttons (green wire)
DDRB &= ~(1 << PB3) | ~(1 << PB4);
PORTB |= (1 << PB3) | (1 << PB4);
//enable interrupts
sei();
PCICR |= (1 << PCIE0) | (1 << PCIE1);
PCMSK0 |= (1 << PB3) | (1 << PB4);
PCMSK1 |= (1 << PC1) | (1 << PC2);
//serial interface
UBRR0 = 103; // Set baud rate
UCSR0B |= (1 << TXEN0 | 1 << RXEN0); // Enable RX and TX
UCSR0C = (3 << UCSZ00); // Async., no parity,
// 1 stop bit, 8 data bits
DDRC |= (1 << PC3);
PORTC &= ~(1 << PC3);
//initialize thermometer
ds1631_init();
ds1631_conv();
// template
stringout("Temp:");
moveto(8);
stringout("Rmt :");
moveto(0x40);
stringout("Low :");
moveto(0x48);
stringout("High:");
}
int main(void)
{
init_lcd();
writecommand(0x01);
updateScreen();
DDRD |= (1 << PD2);//output for green LED
DDRD |= (1 << PD3);//output for red LED
//button pullup resistors:
PORTB |= (1 << PB3) | (1 << PB4);
//rotary encoder initializations:
initialize_rotary();
sei();
PORTC |= (1 << PC4) | (1 << PC5);//i2c pullup resistors
//enable line
PORTC |= (1 << PC3);
DDRC |= (1 << PC3); //set as output
//DS1631
ds1631_init();
ds1631_conv();
unsigned char temp[2];
//serial communication
init_serial();
while (1) {
PORTC &= ~(1 << PC3);//set enable to 0
ds1631_temp(temp);
int tempCelsius = temp[0];
//convert from celsius to fahrenheit:
if(temp[1] == 0){
tempF = (tempCelsius*9)/5 + 32;
}
else{
tempF = tempCelsius * 10 + 5;
tempF = (tempF*9)/5 + 320;
tempF /= 10;
}
if(oldTempF != tempF){//if temperature changes, update + transmit data
//update temp
updateTop();
char temp[5];
snprintf(temp, 5, "%d", tempF);
transmitData(temp, &tempF);
}
oldTempF = tempF;//update old temp
if((PINB & (1 << PB3)) == 0){//if high button is pressed
buttonState = 1;//high
}
if((PINB & (1 << PB4)) == 0){//if low button is pressed
buttonState = 0;//low
}
if(bufferValidFlag == 1){//valid data received
//convert to int stored inside remoteVal
int hundreds = (receivedDataBuffer[1]-0x30)*100;
int tens = (receivedDataBuffer[2]-0x30)*10;
int ones = receivedDataBuffer[3]-0x30;
remoteVal = hundreds + tens + ones;
if(receivedDataBuffer[0] == '-'){
remoteVal = 0 - remoteVal;
}
updateTop();
bufferValidFlag = 0;//reset
}
if(change == 1){
updateScreen();
change = 0;//reset
}
updateLED();
}
return 0; /* never reached */
}