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#include <pic18.h> |
#include <pic18.h> |
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#include <stdio.h> |
#include <stdio.h> |
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#include <htc.h> |
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#include <string.h> |
#include <string.h> |
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#include "lcd.h" |
#include "lcd.h" |
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#include "Delay.h" |
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// Delay.h is included inside lcd.c |
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#define LCD_LENGTH 16 |
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#define LCD_ROWS 2 |
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#define SEND_BUFFER 128 |
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#define PWRFAIL RB1 |
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#define FIREDET RB2 |
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#define FEEDING RB3 |
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#define EMPTYTANK RB4 |
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unsigned char global_Pot_Hi, global_Pot_Lo; |
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unsigned char global_LCD_Buffer[LCD_ROWS][LCD_LENGTH]; |
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unsigned char global_serial_send[SEND_BUFFER], global_serial_recieve_buffer[SEND_BUFFER]; |
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bit global_recieve_done = 0, global_interval_changed = 0; |
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unsigned int global_serial_byte_counter = 0, global_sms_counter = 1, global_time_counter = 0; |
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unsigned int global_emergency_counter = 600, global_time_interval = 3600; |
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unsigned char global_temp = 0; |
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unsigned char cell_nr[15] = ""; // = "21681784"; |
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__EEPROM_DATA( 60, 0, 1, 8, '2', '1', '6', '8'); |
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__EEPROM_DATA( '1', '7', '8', '4',0,0,0,0); |
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void serial_recieved(void); |
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void serial_send(void); |
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void update_lcd(void); |
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void convertTemp(void); |
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void timer1_interrupt(void); |
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// Nicked from H7 |
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void ad_init(void) |
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{ |
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// AD Conversion clock |
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ADCS0 = 0; |
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ADCS1 = 0; |
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ADCS2 = 0; |
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//Select AN0/RA0 for AD source |
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// In this (000) setup, it's only RA0/AN0 that does ad convertion. |
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CHS0=0; |
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CHS1=0; |
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CHS2=0; |
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//Only AN0 is selected for AD and with Vdd/Vss as limits |
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PCFG0=0; |
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PCFG1=1; |
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PCFG2=1; |
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PCFG3=1; |
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//Result is right justified |
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ADFM=1; |
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//Fire up for A/D converter module |
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ADON=1; |
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} |
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void rs232_init(void) |
void rs232_init(void) |
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{ |
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SPEN = 0; // Serial Port Enable Bit... 0 = disabled |
SPEN = 0; // Serial Port Enable Bit... 0 = disabled |
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TRISC6 = 0; |
TRISC6 = 0; |
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TRISC7 = 1; |
TRISC7 = 1; |
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SYNC = 0; // SYNC switches between async(0) and sync(1) mode. |
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SPBRG = 25; |
SPBRG = 207; // 1200 baud rate... 25 = 9600 |
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TXSTA = 0x24; |
// x = (Fosc / (16*[baud rate]) )-1 |
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RCSTA = 0x90; |
TXSTA = 0x24; // Enables BRGH and TXEN inthe TXSTA register |
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SPEN = 1; |
RCSTA = 0x90; // 0x90 enables SPEN and CREN in the RCSTA register |
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} |
} |
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void interrupt_init(void) |
void interrupt_init(void) |
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// Assumes that all interrupts default is 0 |
// Assumes that all interrupts default is 0 |
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PEIE = 1; |
PEIE = 1; |
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GIE = 1; |
GIE = 1; |
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RCIE = 1; |
RCIE = 1; // Recieve interrupt enable. |
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IPEN = 0; // Nfo interrupt priority |
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TXIE = 0; // Serial interrupt enabled |
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TMR1IE = 1; // Enables timer 1 |
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} |
} |
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void timer_init(void) |
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{ |
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TMR1CS = 1; //use external clock |
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T1CKPS1 = 1; //1:8 prescale |
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T1CKPS0 = 1; |
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TMR1H = 0xEF; |
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TMR1L = 0xFF; |
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T1OSCEN = 1; //enable oscillator circuit |
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RD16 = 0; //normal 8 bit writes |
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TMR1ON = 1; |
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} |
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void pic18_io_init(void) |
void pic18_io_init(void) |
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{ |
{ |
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TRISA0 = 1; |
TRISA0 = 1; // analog input |
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TRISB1 = 1; |
TRISA1 = 0; // Output |
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TRISB1 = 1; // TRISB1-4 Digital input |
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TRISB2 = 1; |
TRISB2 = 1; |
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TRISB3 = 1; |
TRISB3 = 1; |
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TRISB4 = 1; |
TRISB4 = 1; |
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} |
} |
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void interrupt_recieve_handler(void) |
void sms_init(void) |
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{ |
{ |
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// Handle recieve inputs... |
int i; |
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sprintf(global_serial_send,"at+cgsn\r"); |
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serial_send(); |
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DelaySek(1); |
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while(!global_recieve_done) ; |
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sprintf(global_serial_send,"%s", "at+cpin=8043\r"); |
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serial_send(); |
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DelaySek(30); |
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update_lcd(); |
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DelaySek(5); |
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} |
} |
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void interrupt interrupt_handler(void) |
void interrupt interrupt_handler(void) |
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// Finds out what interrupt have been trigged, and starts the respective function. |
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{ |
{ |
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if(RCIF == 1) |
// Finds out what interrupt have been trigged, and starts the respective function. |
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if(RCIF == 1) // Serial recieve interrupt |
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{ |
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interrupt_recieve_handler(); |
serial_recieved(); |
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RCIF = 0; |
RCIF = 0; |
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} |
} |
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if(TMR1IF == 1) // timer1 interrupt trigger. |
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{ |
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timer1_interrupt(); |
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TMR1IF = 0; |
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} |
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} |
} |
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void serial_send(void) |
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{ |
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int i; |
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char data_byte; |
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for(i = 0; i < SEND_BUFFER; i++) |
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{ |
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data_byte = global_serial_send[i]; |
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if( data_byte == '\r') |
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i = (SEND_BUFFER - 1); |
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TXREG = data_byte; |
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while(TRMT==0) ; |
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DelayMs(10); |
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} |
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DelayMs(250); |
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DelayMs(250); |
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} |
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void serial_recieved(void) |
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{ |
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char data_byte, saved_data[LCD_LENGTH]; |
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data_byte = RCREG; |
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global_serial_recieve_buffer[global_serial_byte_counter] = data_byte; |
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if(data_byte == '\r') |
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{ |
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global_recieve_done = 1; |
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global_serial_byte_counter = 0; |
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} |
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else |
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{ |
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global_serial_byte_counter++; |
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} |
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} |
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void timer1_interrupt(void) |
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{ |
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TMR1H = 0xEF; |
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TMR1L = 0xFF; |
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global_time_counter++; |
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global_emergency_counter++; |
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RA1 = !RA1; |
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} |
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void update_lcd(void) |
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{ |
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lcd_clear(); |
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lcd_goto(0x00); |
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lcd_puts(global_temp); |
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} |
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void send_update(void) |
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{ |
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sprintf(global_serial_send, "at+cmgs=\"%s\"\r", cell_nr); |
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serial_send(); |
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sprintf(global_serial_send, "%d:%d:%d:%d:%d:%d%c", global_sms_counter, global_temp, FIREDET, EMPTYTANK, FEEDING, PWRFAIL, 0x1A); |
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lcd_goto(40); |
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lcd_puts(global_serial_send); |
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serial_send(); |
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DelayMs(250); |
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global_sms_counter++; |
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} |
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void convertTemp() |
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{ |
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short adVal; |
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adVal = (global_Pot_Hi << 8) | global_Pot_Lo; |
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if( adVal >=840 ) |
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global_temp = 100; |
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else |
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global_temp = (adVal / 8.3886); |
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} |
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void eeprom_writer(void) |
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{ |
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char len,i; |
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len = strlen(cell_nr); |
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eeprom_write(0, (global_time_interval/60)); |
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eeprom_write(1, global_sms_counter>>8); |
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eeprom_write(2, global_sms_counter); |
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eeprom_write(3, len); |
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for (i=0; i<len; ++i) |
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{ |
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eeprom_write(i+4, cell_nr[i] ); |
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} |
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} |
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void eeprom_reader(void) |
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{ |
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char len,i; |
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global_time_interval = eeprom_read(0); |
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global_time_interval *= 60; |
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global_sms_counter = (eeprom_read(1)<<8) | eeprom_read(2); |
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len = eeprom_read(3); |
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for (i=0; i<len; ++i) |
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{ |
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cell_nr[i] = eeprom_read(i+4); |
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} |
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cell_nr[i] = 0; //zero terminated! |
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} |
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void on_recieve(void) |
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{ |
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} |
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void main() |
void main() |
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{ |
{ |
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rs232_init(); |
//////////////////// |
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// Running Init's // |
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// Running init for various components. |
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pic18_io_init(); |
pic18_io_init(); |
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rs232_init(); |
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ad_init(); |
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lcd_init(0); |
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interrupt_init(); |
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sms_init(); |
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//eeprom_init(); |
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timer_init(); |
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eeprom_reader(); |
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/////////////// |
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// Main loop // |
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send_update(); |
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while(1) |
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{ |
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// If there happends to be a critical state on the system, we send a sms. |
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if( (global_temp >= 90 || PWRFAIL == 1 || FIREDET == 0 || FEEDING == 1 || EMPTYTANK == 1) && global_emergency_counter >= 600 ) |
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{ |
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send_update(); |
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global_emergency_counter = 0; |
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} |
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// Every X sec. a status sms is send. |
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if(global_time_counter >= 3600) |
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{ |
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send_update(); |
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global_time_counter = 0; |
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} |
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// To avoid buffer overrun. |
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if( global_emergency_counter > 7200 ) |
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global_emergency_counter = 600; |
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// Checks if there has been recieved a config sms. |
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if(global_interval_changed ) |
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{ |
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eeprom_writer(); |
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global_interval_changed = 0; |
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} |
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// Checking if A/D convertion is done, and save the data in global_Pot_?? |
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if(GODONE==0) |
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{ |
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global_Pot_Hi = ADRESH; |
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global_Pot_Lo = ADRESL; |
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convertTemp(); |
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update_lcd(); |
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GODONE = 1; |
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} |
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} |
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} |
} |