Update main.c

Author: GuangLun2000

Program/main.c

@@ -42,6 +42,17 @@
 #define G_led RC0
 #define R_led RC1
 
+/**********Global variables**********/
+int data1 = 0;
+int data2 = 0;
+unsigned char newData = 0;
+unsigned char AddData = 0;
+char ch = 0;
+int col = 16;
+int flag = 1;
+int i = 0;
+
+
 /***********USER FUNCTIONS***********/
 
 //prototypes
@@ -50,32 +61,19 @@ void loop(void);
 char receive(void);
 void send_str(char *str);
 
+// 3 version of LCD display
 void LCDBegin(void);
 void LCDTitle(void);
 void LCDEnd(void);
 
-void readLDR_value(void);
+// I2C function
+void readLDR_data(void);
 void Write_data(void);
 void Send_data(void);
 void receive_data(void);
 void Light();
 
 
-/**********Global variables**********/
-unsigned char gMode;
-char gSpeed;
-unsigned char new_value = 0;
-unsigned char ad_value = 0;
-int value1 = 0;
-int value2 = 0;
-int thr = 1;
-unsigned char gOutString[16];
-int i = 0;
-char ch = 0;
-int col = 16;
-int temp = 1; 
-
-
 /******************************************************************************************/
 
 void main()
@@ -103,7 +101,7 @@ void main()
     {	
         for (;;) // endless loop
         {   
-            readLDR_value();
+            readLDR_data();
             loop();
             LCDTitle();
             send_str("Working_SW2");
@@ -127,16 +125,15 @@ void main()
 
 }
 
-void setup(void) // setup stuff
+void setup(void) // Setup stuff
 {
     PORTD = 0b11111111;
     TRISD = 0b00000000;
-//    TRISC = 0xC0; //RC6 and RC7 must be set to inputs for USART.
-    TXSTA = 0x24; //Set TXEN bit to enable transmit.
-                  //Set BRGH bit for Baud Rate table selection.
-    RCSTA = 0x90; //Set CREN bit for continuous read.
+    TXSTA = 0x24;        //Set TXEN bit to enable transmit.
+    //Set BRGH bit for Baud Rate table selection.
+    RCSTA = 0x90;        //Set CREN bit for continuous read.
     //Set SPEN bit to enable serial port.
-    SPBRG = 0x19; //Set Baud Rate to 9600
+    SPBRG = 0x19;        //Set Baud Rate as 9600
 
     TRISC = 0xd8;
     TRISD = 0x00;
@@ -145,73 +142,67 @@ void setup(void) // setup stuff
     INTCON = 0xc0;
     PIE1 = 0x21;
     PIR1 = 0x00;
-    Lcd8_Init();  // Required initialisation of LCD to 8-bit mode
-    TRISB = 0x07; // Set PORTB bit 0 as input
+    Lcd8_Init();         // Required initialisation of LCD to 8-bit mode
+    TRISB = 0x07;        // Set PORTB bit 0 as input
 
     TRISC = 0xd8;
     TRISD = 0x00;
     PORTD = 0xff;
 
     TXSTA = 0x24;
     RCSTA = 0x90;
-    SPBRG = 0x19; // set baud rate
+    SPBRG = 0x19;        // set Baud Rate
 
     T1CON = 0x21;
     INTCON = 0xc0;
     PIE1 = 0x21;
     PIR1 = 0x00;
     //Set the ACD registers
 
-    TRISA = 0b00000101; // Set PORTA bits 0 and 2 are output
+    TRISA = 0b00000101;   // Set PORTA bits 0 and 2 are output
     //TRISC = 0b00000000; // Set PORTC bit 1 and 0 as output
     PORTC = 0b00000010;
-    ADCON0 = 0b01010001; // Set FOSC/8,RA2 as analog input and A/D converter module is powered up
-    ADCON1 = 0b00000010; // Set Left justified
+    ADCON0 = 0b01010001;  // Set FOSC/8,RA2 as analog input and A/D converter module is powered up
+    ADCON1 = 0b00000010;  // Set Left justified
     OPTION_REG &= 0b01111111;
 
 
 
-    TRISC = 0b1101100; //RC6 and RC7 must be set to inputs for USART. 
-    TXSTA = 0x24; //Set TXEN bit to enable transmit.
-                    //Set BRGH bit for Baud Rate table selection.
-    RCSTA = 0x90; //Set CREN bit for continuous read.
+    TRISC = 0b1101100; // RC6 and RC7 must be set to inputs for USART. 
+    TXSTA = 0x24;      // Set TXEN bit to enable transmit.
+                       // Set BRGH bit for Baud Rate table selection.
+    RCSTA = 0x90;      // Set CREN bit for continuous read.
     //Set SPEN bit to enable serial port.
-    SPBRG = 0x19; //Set Baud Rate to 9600
-    i2c_init();
+    SPBRG = 0x19;      // Set Baud Rate to 9600
+    i2c_init();        // Required initialisation of I2C
 
 
 
     PORTD = 0b11111111;
     TRISD = 0b00000000;
-    //TRISC = 0xC0; //RC6 and RC7 must be set to inputs for USART. 
-    TXSTA = 0x24; //Set TXEN bit to enable transmit.
-                    //Set BRGH bit for Baud Rate table selection.
-    RCSTA = 0x90; //Set CREN bit for continuous read.
+    //TRISC = 0xC0;    //RC6 and RC7 must be set to inputs for USART. 
+    TXSTA = 0x24;      //Set TXEN bit to enable transmit.
+                       //Set BRGH bit for Baud Rate table selection.
+    RCSTA = 0x90;      //Set CREN bit for continuous read.
     //Set SPEN bit to enable serial port.
-    SPBRG = 0x19; //Set Baud Rate to 9600
+    SPBRG = 0x19;      //Set Baud Rate to 9600
 }
 
 void loop(void)
 {
-        
-        if (value1 > thr)
+        if (data1 > flag)
         {
             T1CON = 0x01;
-            
-
         }
-        else if (value1 <= thr)
+        else if (data1 <= flag)
         {
             T1CON = 0x31;
-            
-
         }
 }
 
-/******************************************************************************************/
 
-void __interrupt() // Interrupt identifier
-    isr(void)      // Here is interrupt function
+void __interrupt()  // Interrupt identifier
+    isr(void)       // Here is interrupt function.
 {
     if (TMR1IF)
     {
@@ -231,6 +222,7 @@ void __interrupt() // Interrupt identifier
     }
 }
 
+/******************************************************************************************/
 
 char receive(void)
 {
@@ -255,8 +247,10 @@ void send_str(char *str)
     }
 }
 
+/******************************************************************************************/
 
-//Display title on LCD
+// 3 LCD Display Version
+// Beginning of the project, version 1.
 void LCDBegin(void)
 {
     Lcd8_Set_Cursor(1,1);    // select line 2 of LCD
@@ -266,7 +260,7 @@ void LCDBegin(void)
     __delay_ms(1000);
 }
 
-
+// Once SW2 is closed, LCD version 2.
 void LCDTitle(void)
 {
     if (col < 0)
@@ -282,6 +276,7 @@ void LCDTitle(void)
     __delay_ms(300);
 }
 
+// Once SW4 is closed, LCD version 3.
 void LCDEnd(void)
 {
     Lcd8_Set_Cursor(1,1);    // select line 2 of LCD
@@ -291,28 +286,45 @@ void LCDEnd(void)
     __delay_ms(1000);
 }
 
-void readLDR_value(void){
+void Light(){
+
+    if(data1+data2*0.1<1.5){
+        R_led = HIGH;
+        G_led = LOW;
+    }else{
+        R_led = LOW;
+        G_led = HIGH;
+        
+    }
+}
+
+/******************************************************************************************/
+
+// ADC function
+void readLDR_data(void){
     if(1){
         __delay_ms(150);
             __delay_us(50);
             GO_nDONE = 1;
             while(GO_nDONE){
                 continue;
             }
-            if(ADRESH!=new_value){
-                ad_value = ADRESH;
-                value1 = (ad_value*5/255);
-                value2 = (ad_value*10*5/255)%10;
-
+            
+            if(ADRESH!=newData){
+                AddData = ADRESH;
+                data1 = (AddData*5/255);
+                data2 = (AddData*10*5/255)%10;
             }
 
             Light();
-            new_value = ad_value;
+            newData = AddData;
            __delay_ms(100);
         }
 }
 
+/******************************************************************************************/
 
+// I2C function
 void Write_data(void)
 {
     unsigned char address_hi = hi;
@@ -344,19 +356,5 @@ void Send_data(void)
     }
 }
 
-
-void Light(){
-
-    if(value1+value2*0.1<1.5){
-        R_led = HIGH;
-        G_led = LOW;
-    }else{
-        R_led = LOW;
-        G_led = HIGH;
-        
-    }
-}
-
-
-// Created by Hanlin CAI in 2022/12/15
+// This program is created by Hanlin CAI in 2022/12/15
 // EE302FZ Final Project.