void Print_result ()
{
if (print3_check==false)
{
LCD_clear_sec_line();
LCD_GotoXY(1,0);
LCD_Send_A_String("result =");
LCD_display_number(result);
}
}
/*
* function name:System_Initial()
* description: Initialize the system. include I/O, LCD and ADS1118 and meat select.
*/
void System_Initial()
{
flag = 0; //reset flag
flag ^= BIT8; // Default to farenheit
Thr_state = 0; //threshold temperature setting state machine counter
time_state = 0; //time setting state machine counter
Thr_temp = 100; //configure threshold temperature to 100;
Act_temp = 250;
meatState = 0; //No meat selected yet
customThreshold = 0; //Clear custom threshold flag
// IO initial
P1OUT = 0x09;
P2OUT = 0x3F;
LCD_init(); // LCD initial
LCD_clear(); // LCD clear
//Display startup message for 2 seconds
LCD_display_string(0," THERMOMEATER ");
int i;
for (i = 0; i < 2; i++) {
_delay_cycles(1000000);
}
LCD_clear();
//Output Temperature read screen labels
LCD_display_string(0,"Des:");
LCD_display_time(0,8,time); // display current time
LCD_display_string(1," Probe :"); //Initially reading probe
LCD_display_char(1,13,0xDF); //Degrees symbol
LCD_display_char(1,14,'F'); //Initially farenheit
LCD_display_number(0,4,Thr_temp); // display threshold temp number
ADS_Config(0); // set ADS1118 to convert local temperature,
//and start convertion.
}
/*
* ======== main ========
*/
int main(int argc, char *argv[])
{
CSL_init(); // Activate Grace-generated configuration
delay(); //
System_Initial(); // initialize system.
delay(); // delay and wait the first conversion.
_enable_interrupt(); // enable interrupt
while(1)
{
// half a second interrupt.
if(flag & BIT7)
{
half_second();
}
// read ADC result
if(flag & BIT4) //Read ADC result
{
ADC_display();
}
// one second interrupt to display time
if (flag & BIT3)
{
time_display();
}
if(flag & BIT1) // if SW1 is pushed, threshold temperature
{ // state machine will be changed
flag &= ~ BIT1; // flag is reset
time_state = 0; //when threshold temperature is setting,
//setting time is disable.
if(!customThreshold) {
meatSelect(); //Enter meat select menu if not setting custom
}
if(Thr_state >= 3) // if in state 3, change to state 0;
{
Thr_state = 0;
Thr_temp = set_temp; // assign threshold temperature
LCD_display_number(0,4,Thr_temp); // display threshold temperature
customThreshold = 0; //Reset custom threshold flag
}
else //else, Thr_state is changed to next state
{
Thr_state ++;
}
}
if((flag & BIT2) && (!Thr_state)) // if SW2 is pushed, and Thr_state = 0,
{ // time setting state machine will be changed
flag &= ~ BIT2; // flag is reset
if(!(P1IN & BIT3))
{
flag ^= BIT9; // S2 and SW2 are pushed together to change input
flag ^= BIT8;
if(flag & BIT9) // Display external temp
LCD_display_string(1," Ext :");
else //Display probe temp
LCD_display_string(1," Probe :");
}
else
{
if(time_state >= 4) // if in state 4, change to state 0;
{
time_state = 0;
time = set_time; // assign actual time
set_time = 0;
LCD_display_time(0,8,time); // display setting time
}
else
{
time_state ++;
}
}
}
if(flag & BIT0) // P1.3 service, set the Threshold temp or Time.
{
flag &= ~ BIT0; // flag is reset
if(Thr_state != 0)
{
set_Thrtemp(); // set threshold temperature.
}
else if(time_state != 0)
{
set_Time(); // set timer.
}
else
flag ^= BIT8; // display temperature in Fahrenheit
}
else
__no_operation();
}
}
void half_second()
{
flag &= ~ BIT7;
// judge actual temperature is higher than threshold temperature - Buzzer
if((Act_temp >= (10*Thr_temp)) && (flag & BIT6))
{
BUZZ_ON;
}
else if(time >0 && time <= 3)
{
BUZZ_ON;
}
else
{
BUZZ_OFF;
}
//display threshold temperature setting
if(Thr_state == 0x01) //threshold temperature state machine output.
{
if (flag & BIT6)
LCD_display_char(0,4,' '); //display blank space for half a second
else
LCD_display_number(0,4,set_temp);//display hundred place for half a second
}
else if(Thr_state == 0x02)
{
if (flag & BIT6)
LCD_display_char(0,5,' '); //display blank space for half a second
else
LCD_display_number(0,4,set_temp);//display decade for half a second
}
else if(Thr_state == 0x03)
{
if (flag & BIT6)
LCD_display_char(0,6,' '); //display blank space for half a second
else
LCD_display_number(0,4,set_temp);//display unit's digit for half a second
}
// display time setting
if(time_state == 0x01)
{
if (flag & BIT6)
LCD_display_char(0,11,' '); //display blank space for half a second
else
LCD_display_time(0,8,set_time);//display hundred place for half a second
}
else if(time_state == 0x02)
{
if (flag & BIT6)
LCD_display_char(0,12,' '); //display blank space for half a second
else
LCD_display_time(0,8,set_time);//display hundred place for half a second
}
else if(time_state == 0x03)
{
if (flag & BIT6)
LCD_display_char(0,14,' '); //display blank space for half a second
else
LCD_display_time(0,8,set_time);//display hundred place for half a second
}
else if(time_state == 0x04)
{
if (flag & BIT6)
LCD_display_char(0,15,' '); //display blank space for half a second
else
LCD_display_time(0,8,set_time);//display hundred place for half a second
}
}
void STM_refresh(void)
{
if(state_is_new)
{
execute_state_entry(AppState);
}
switch(AppState)
{
case READY_STATE:
if (if_valve_open())
{
STM_set_state(DRINKING_STATE);
}
break;
case DRINKING_STATE:
if (ADC_get_result() < ADC_LOW_SWITCH_VALUE)
{
STM_set_state(VERIFICATION_STATE);
}
if (If0_01secPassed)
{
LCD_display_time(get_current_time());
}
break;
case VERIFICATION_STATE:
if(If0_01secPassed)
{
verification_state_duration ++;
}
if(ADC_get_result() > ADC_LOW_SWITCH_VALUE)
{
AppState = DRINKING_STATE; // don't execute drinking_state entry!
}
if(verification_state_duration >= VERIFICATION_LENGTH)
{
STM_set_state(DISPLAY_STATE);
}
break;
case DISPLAY_STATE:
if (If0_01secPassed)
{
led_flashing_duration ++;
if (led_flashing_duration >= LED_BLINK_LENGTH)
{
led_off();
}
}
// poll the ADC (wait for the beer)
if ((ADC_get_result() > ADC_HIGH_SWITCH_VALUE) && ! if_valve_open())
{
STM_set_state(READY_STATE);
}
break;
case ADC_STATE:
// ADC_STATE NORMAL OPERATION
if (If0_01secPassed)
{
LCD_carriage_return();
LCD_putsub(" ");
LCD_carriage_return();
LCD_display_number((uint16_t)ADC_get_result());
}
break;
}
clear_flags();
}
