Hardware-Project/main.c at main · vjathishwarya2000/Hardware-Project · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
#define F_CPU 8000000UL
#include "headerfiles.h"
void prepareMeal(int);
int main(void){
	// Hello
	DDRD=0xF4;
	LCD_Init();_delay_ms(50);
	ADC_Init();
	PWM_init();
	USART_init(9600);
	char RFID[12]="/0"; memset(RFID,0,15);
	LCD_Clear(); LCD_String("Welcome");LCD_Command(0xC0); LCD_String("Press Start");
	_delay_ms(2000);

	start:
    while (1){
		//read milk level
		int MilkFlag=calculateDistance(PA6,PA7,12);//24 in proteus
		if(MilkFlag != 1){
			LCD_Clear();
			LCD_String("Low milk level");
			while(1){}
		}else{
			//read temperature and turn on heater
			LCD_Clear();
			while((ADC_Read(2)/2)<=65){
				LCD_String("Milk Heating");
				LCD_Command(0xC0);
				LCD_String("in Process");
				_delay_ms(2000);
				LCD_Clear();
				PORTD=0x04;
			}
			PORTD = 0x00;
		}
		//start button 1
		int keyStart =keyfind();
		if(keyStart==1){
			LCD_Clear();
			LCD_String("Show RFID tag");
			for (int i=0;i<12;i++){ //read rfid chars
				RFID[i]=USART_rxc();
			}
			LCD_Clear();
			if(strcmp(RFID,"123456789012")==0){//if registered user
				LCD_String("Select The Size");
				LCD_Command(0xC0);
				LCD_String("3: Small 4:Large");
				int key=keyfind();
				if(key==3){
					prepareMeal(50);
				}else if(key==4){
					prepareMeal(80);
				}else{
					goto start;
				}
			}else{
				LCD_Clear();
				LCD_String("Unregistered");
				LCD_Command(0xC0);
				LCD_String("User");
				_delay_ms(3000);
				goto start;
			}
		}
    }
}

void prepareMeal(int weight){

	//weight can be 50g(key 3) 80g(key 4)
	LCD_Clear();
	LCD_String("Place the Bowl");
	_delay_ms(100);
	int BowlFlag=calculateDistance(PA3,PA5,10);//20 in proteus
	if(BowlFlag==1){
		LCD_Clear();
		LCD_String("Press cook(2)");
		_delay_ms(1000);
		int key1=keyfind();
		if(key1==2){
			LCD_Clear();
			LCD_String("Preparing");
			_delay_ms(1000);
			LCD_Clear();
			servo1ninety();//servo top lid
			char lcddata[20];
			int hx=0;
			while(hx<=weight){
				DDRA|=(1<<0);		//Load cell clock pin
				PORTA&=~(1<<0);		//Clock pin low
				hx=loadCellRead();		//inserting load cell calibration function
				_delay_ms(100);
				itoa(hx,lcddata,10);		//convert int to string
				LCD_String(lcddata);		//data to be displayed on lcd
				_delay_ms(1000);
				LCD_Clear();
				};
			LCD_String("Limit exceeded");
			servo1zero();//close servo top lid
			_delay_ms(10);
			servo2ninety();//servo bottom lid open
			_delay_ms(20);
			servo2zero();//servo bottom close
			LCD_Clear();
			LCD_String("Moving Belt");
			portHigh(PORTD,6);
			_delay_ms(5);
			PORTD = 0x00;
			_delay_ms(5000);
			LCD_Clear();
			LCD_String("Flowing Milk");
			portHigh(PORTD,7);
			_delay_ms(10);
			PORTD =0x00;
			_delay_ms(15000);
			LCD_Clear();


			LCD_String("Cornflakes");
			LCD_Command(0XC0);
			LCD_String("Ready");
			_delay_ms(10000);
			LCD_Clear();

		}


	}else{
		LCD_Clear();
		LCD_String("Place Bowl");
	}
}