diff options
Diffstat (limited to 'main.c')
| -rwxr-xr-x | main.c | 298 |
1 files changed, 298 insertions, 0 deletions
@@ -0,0 +1,298 @@ +#include <stdio.h> // included for sprintf
+
+#define DEBUG 0 // Enable/Disable debugging via UART
+
+#include "conf.h" //Configuration settings
+#include "main.h" //Declarations for main
+#include "lcd.h" //Declaratons for LCD
+#include "i2c.h"
+#include "ds3231.h" //Declarations for RTC
+#include "beep.h" //Declarations for BEEP
+
+#if DEBUG
+#include "uart.h" //Declarations for UART
+#include "term.h" //Declarations for Escape codes
+#endif
+
+int main() {
+ TRISC = 0x00; // Set PORTC as outputs
+ PORTC = 0x00; // Set all PORTC pins LOW
+
+ TRISD = 0x00; // Set PORTD as outputs
+ PORTD = 0x00; // Set all PORTD pins LOW
+
+#if DEBUG
+ Initialize_UART(); //Initialize UART module
+ UART_send_string(CLS); // Clear screen
+ UART_send_string(CURSOR(12, 23)); // Set cursor at line 12, column 23
+ UART_send_string(GREEN); // Set Green
+ UART_send_string("UART Module Initialized and active\r\n");
+ UART_send_string(CLRATTR); // No color
+#endif
+
+ I2C_Master_Init(100000); // Init I2C Master with 100KHz Clock
+#if DEBUG
+ UART_send_string(CURSOR(13, 24)); // Set cursor at line 12, column 23
+ UART_send_string(GREEN); // Set Green
+ UART_send_string("I2C Module Initialized and active\r\n");
+ UART_send_string(CLRATTR); // No color
+#endif
+
+ Lcd_Init();
+#if DEBUG
+ UART_send_string(CURSOR(14, 24)); // Set cursor at line 12, column 23
+ UART_send_string(GREEN); // Set Green
+ UART_send_string("LCD Module Initialized and active\r\n");
+ UART_send_string(CLRATTR); // No color
+#endif
+
+ display_Intro();
+ display_Lcd_Layout();
+
+ // Set an initial date time
+ //Set_Time_Date();
+ //Set_Time();
+ //Set_Date();
+ //Set_DayOfWeek();
+
+ // Write default alarm values
+
+ /*UART_send_string("Setting Alarm1 and Alarm2\r\n");
+ alarm1_min = 30;
+ alarm1_hour = 16;
+ alarm2_min = 40;
+ alarm2_hour = 16;
+ UART_send_string("Writing Alarms\r\n");
+ Write_Alarms();*/
+
+ while (1) {
+
+ // Set time and date variables from DS3231
+ //UART_send_string("Updating current date time from DS3231\r\n");
+ Update_Current_Date_Time();
+
+ // Read temp
+ //UART_send_string("Reading Alarms and Temperature");
+ Read_Alarms_Temp();
+
+ // Get Alarm Status
+ Get_Alarm_Status();
+
+ // Separate the int timedate variables into chars
+ //UART_send_string("Formatting chars");
+ format_DateTimeChars();
+
+ // Format temperature
+ //UART_send_string("Formating temperature");
+ format_Temperature();
+
+ // Determine day of the week
+ //UART_send_string("Determining day of week");
+ getWeekDay(dayofweek);
+
+ // Enter loop and update display if sec changes from DS3231
+ if (sec_chg != sec) {
+
+ update_Display();
+
+ // Set temp_sec to current sec from DS3231
+ sec_chg = sec;
+
+#if DEBUG
+ UART_send_string(CURSOR(19, 1));
+ sprintf(buf, "%sTIME:%s\t%02d:%02d:%02d\r\n", YELLOW, CLRATTR,
+ hour, min, sec);
+ UART_send_string(buf);
+ sprintf(buf, "%sAL1:%s\t%02d:%02d:%02d\t%sSTATUS:%s %d\r\n", YELLOW,
+ CLRATTR, alarm1_hour, alarm1_min, alarm1_sec, YELLOW,
+ CLRATTR, alarm1_status);
+ UART_send_string(buf);
+ sprintf(buf, "%sAL2:%s\t%02d:%02d\t\t%sSTATUS:%s %d\r\n", YELLOW,
+ CLRATTR, alarm2_hour, alarm2_min, YELLOW, CLRATTR,
+ alarm2_status);
+ UART_send_string(buf);
+ sprintf(buf, "%sWKDAY:%s\t%d\t\t%sDAY:%s\t%s\r\n", YELLOW, CLRATTR,
+ dayofweek, YELLOW, CLRATTR, weekday);
+ UART_send_string(buf);
+ sprintf(buf, "%sTEMP:\t%s%c%c%c.%c%cC%s", YELLOW, CLRATTR,
+ temp_sign, temp_2, temp_1, temp_0, 0xB0, CLRATTR);
+ UART_send_string(buf);
+#endif
+ }
+ }
+
+ return 0;
+}
+
+// Format unsigned int to unsigned chars
+
+void format_DateTimeChars() {
+ sec_0 = sec % 10 + '0';
+ sec_1 = sec / 10 + '0';
+ min_0 = min % 10 + '0';
+ min_1 = min / 10 + '0';
+ hour_0 = hour % 10 + '0';
+ hour_1 = hour / 10 + '0';
+ day_0 = date % 10 + '0';
+ day_1 = date / 10 + '0';
+ month_0 = month % 10 + '0';
+ month_1 = month / 10 + '0';
+ year_0 = year % 10 + '0';
+ year_1 = year / 10 + '0';
+ alarm1_sec_0 = alarm1_sec % 10 + '0';
+ alarm1_sec_1 = alarm1_sec / 10 + '0';
+ alarm1_min_0 = alarm1_min % 10 + '0';
+ alarm1_min_1 = alarm1_min / 10 + '0';
+ alarm1_hour_0 = alarm1_hour % 10 + '0';
+ alarm1_hour_1 = alarm1_hour / 10 + '0';
+ alarm2_min_0 = alarm2_min % 10 + '0';
+ alarm2_min_1 = alarm2_min / 10 + '0';
+ alarm2_hour_0 = alarm2_hour % 10 + '0';
+ alarm2_hour_1 = alarm2_hour / 10 + '0';
+}
+
+// Format msb and lsb for temperature display
+
+void format_Temperature() {
+
+ if (temperature_msb < 0) {
+ temperature_msb *= -1;
+ temp_sign = '-';
+ } else {
+ temp_sign = '+';
+ }
+
+ //Shift fractional value 6 bits to the right so b7 & b6 are b1 & b0
+ temperature_lsb >>= 6;
+
+ //Fractional is increments of 0.25 degrees
+ temperature_lsb *= 25;
+
+ if (temperature_lsb == 0) {
+ temp_0 = '0';
+ }
+
+ if (temperature_lsb == 25) {
+ temp_0 = '2';
+ }
+
+ if (temperature_lsb == 50) {
+ temp_0 = '5';
+ }
+
+ if (temperature_lsb == 75) {
+ temp_0 = '7';
+ }
+
+ temp_1 = temperature_msb % 10 + '0';
+ temp_2 = temperature_msb / 10 + '0';
+}
+
+// Determine day of week with dayofweek from DS3231
+
+void getWeekDay(unsigned int dayofweek) {
+ switch (dayofweek) {
+ case 1:
+ weekday = "Sun";
+ break;
+ case 2:
+ weekday = "Mon";
+ break;
+ case 3:
+ weekday = "Tue";
+ break;
+ case 4:
+ weekday = "Wed";
+ break;
+ case 5:
+ weekday = "Thu";
+ break;
+ case 6:
+ weekday = "Fri";
+ break;
+ case 7:
+ weekday = "Sat";
+ break;
+ }
+}
+
+// Determine Alarm status from control registers
+
+void Get_Alarm_Status() {
+ alarm1_status = control_reg & 0x01; // Read alarm1 INT enable bit A1IE
+ alarm2_status = (control_reg >> 1) & 0x01; // Read alarm2 INT enable bit A2IE
+}
+
+void display_Intro() {
+ // Give an intro message on the LCD
+ Lcd_Clear();
+ Lcd_Set_Cursor(1, 1);
+ Lcd_Write_String("RTC/LCD with PIC");
+ Lcd_Set_Cursor(2, 1);
+ Lcd_Write_String(" Circuit Digest");
+ __delay_ms(2000); //display for 1sec
+}
+
+void display_Lcd_Layout() {
+ // Setup time date display format
+ Lcd_Clear();
+ Lcd_Set_Cursor(1, 1);
+ Lcd_Write_String("HH:mm:ss -PP.P");
+ Lcd_Write_Char(0xDF);
+ Lcd_Write_Char('C');
+ Lcd_Set_Cursor(2, 1);
+ Lcd_Write_String("ddd, DD/MM/YY ");
+ __delay_ms(2000);
+}
+
+void update_Display() {
+ // Display Hours
+ Lcd_Set_Cursor(1, 1);
+ Lcd_Write_Char(hour_1);
+ Lcd_Write_Char(hour_0);
+
+ // Display minutes
+ Lcd_Set_Cursor(1, 4);
+ Lcd_Write_Char(min_1);
+ Lcd_Write_Char(min_0);
+
+ // Display seconds
+ Lcd_Set_Cursor(1, 7);
+ Lcd_Write_Char(sec_1);
+ Lcd_Write_Char(sec_0);
+
+ // Display day
+ Lcd_Set_Cursor(2, 6);
+ Lcd_Write_Char(day_1);
+ Lcd_Write_Char(day_0);
+
+ // Display month
+ Lcd_Set_Cursor(2, 9);
+ Lcd_Write_Char(month_1);
+ Lcd_Write_Char(month_0);
+
+ // Display year
+ Lcd_Set_Cursor(2, 12);
+ Lcd_Write_Char(year_1);
+ Lcd_Write_Char(year_0);
+
+ // Display day of week
+ Lcd_Set_Cursor(2, 1);
+ Lcd_Write_String(weekday);
+
+ // Display temperature
+ Lcd_Set_Cursor(1, 10);
+ Lcd_Write_Char(temp_sign);
+ Lcd_Write_Char(temp_2);
+ Lcd_Write_Char(temp_1);
+ Lcd_Set_Cursor(1, 14);
+ Lcd_Write_Char(temp_0);
+
+ if (min == 00 && sec == 00) {
+ alarm(2);
+ }
+
+ if (min == 30 && sec == 00) {
+ alarm(1);
+ }
+}
\ No newline at end of file |