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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 <stdlib.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 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_serial_send[BUFFER], global_serial_recieve_buffer[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 global_temp_old = 0; |
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unsigned char global_message_buffer1[BUFFER]; |
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unsigned char global_message_buffer2[BUFFER]; |
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unsigned char global_message_buffer_length1; |
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unsigned char global_message_buffer_length2; |
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unsigned char global_lcd_buf[16]; |
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unsigned short global_imei_tversum; |
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unsigned char global_cell_nr[15] = ""; // = "21681784"; |
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bit global_modem_init = 0; |
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bit global_has_imei = 0; |
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unsigned char global_sms_recieve_number[3]; |
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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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void on_recieve(void); |
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void on_initial_recieve(void); |
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void sms_recieved(void); |
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void send_sms(const unsigned char* payload); |
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void reset_recieve_buffer(void) |
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{ |
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global_recieve_done = 0; |
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global_message_buffer_length1 = 0; |
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//global_message_buffer1[0] = 0; |
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global_message_buffer_length2 = 0; |
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//global_message_buffer2[0] = 0; |
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memset(global_message_buffer1, 0, BUFFER); |
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memset(global_message_buffer2, 0, BUFFER); |
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} |
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void pic18_io_init(void) |
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{ |
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TRISA0 = 1; // analog input |
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TRISA5 = 0; // Output |
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TRISB1 = 1; // TRISB1-4 Digital input |
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TRISB2 = 1; |
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TRISB3 = 1; |
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TRISB4 = 1; |
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} |
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void ad_init(void) // Nicked from H7 |
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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 pic18_io_init(void) |
void timer_init(void) |
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{ |
{ |
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TRISA0 = 1; |
TMR1CS = 1; //use external clock |
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TRISB1 = 1; |
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TRISB2 = 1; |
T1CKPS1 = 1; //1:8 prescale |
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TRISB3 = 1; |
T1CKPS0 = 1; |
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TRISB4 = 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 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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char buf[2]; |
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reset_recieve_buffer(); |
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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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while (global_has_imei == 0) |
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{ |
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if (strstr(global_message_buffer1,"OK") != 0) |
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{ |
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global_imei_tversum = 0; |
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for (i=0; i<15; ++i) |
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{ |
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buf[0] = global_message_buffer2[i]; |
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buf[1] = 0; |
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global_imei_tversum += atoi(buf); |
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//global_imei_tversum += (global_message_buffer2[i] - '0'); |
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} |
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global_has_imei = 1; |
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} |
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} |
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sprintf(global_serial_send,"%s", "at+cpin=8043\r"); |
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serial_send(); |
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while(global_modem_init == 0) |
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{ |
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on_initial_recieve(); |
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} |
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DelayMs(5); |
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reset_recieve_buffer(); |
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sprintf(global_serial_send, "at+cmgd=1,4\r"); |
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serial_send(); |
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while ( strstr(global_message_buffer1,"OK") == 0) ; |
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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 < 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 = (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(150); |
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global_serial_send[0] = 0; |
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DelayMs(150); |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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// Takes the recieving data and fills it in a buffer, when we meet a '\r' we fill the data from, |
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// global_serial_recieve_buffer, to global_message_buffer1, and sets the flag global_recieve_done. |
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void serial_recieved(void) |
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{ |
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char data_byte; |
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data_byte = RCREG; |
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if (data_byte == '\n') // Cant be bothered to do anyting if the byte is a '\n'. |
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return; |
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if (global_serial_byte_counter == 0 && data_byte == '\r') // don't care about '\r', if it's the first byte we recieve. |
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return; |
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if ( global_serial_byte_counter < BUFFER) //Prevent buffer overrun |
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global_serial_recieve_buffer[ global_serial_byte_counter++ ] = data_byte; // fills the data_byte into our buffer. |
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if (data_byte == '\r') // when we meet a '\r', the transmission is done, and we fill the constxt of |
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// global_message_buffer1 into global_message_buffer2 our main buffer into |
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// global_message_buffer2, and the same with our recieve buffer, global_serial_recieve_buffer |
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// into global_message_buffer1. |
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{ |
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global_recieve_done = 1; // indicates the recieve transmission is done. |
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global_serial_recieve_buffer[global_serial_byte_counter] = 0; //zero terminate |
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// global_message_buffer1 -> global_message_buffer2 |
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strcpy(global_message_buffer2, global_message_buffer1); |
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global_message_buffer_length2 = global_message_buffer_length1; |
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// global_serial_recieve_buffer -> global_message_buffer1 |
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strcpy(global_message_buffer1, global_serial_recieve_buffer); |
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global_message_buffer_length1 = global_serial_byte_counter; |
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global_serial_byte_counter = 0; |
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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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sprintf(global_lcd_buf, "Temp: %3d", global_temp); |
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lcd_puts(global_lcd_buf); |
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} |
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void send_update(void) |
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{ |
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char update[40]; |
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sprintf(update, "%d:%d:%d:%d:%d:%d", global_sms_counter, global_temp, FIREDET, EMPTYTANK, FEEDING, PWRFAIL); |
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send_sms(update); |
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global_sms_counter++; |
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} |
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void send_sms(const unsigned char* payload) |
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{ |
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sprintf(global_serial_send, "at+cmgs=\"%s\"\r", global_cell_nr); |
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serial_send(); |
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sprintf(global_serial_send, "%s%c", payload, 0x1A); |
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serial_send(); |
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DelayMs(150); |
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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 = (unsigned char) (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(global_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, global_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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global_cell_nr[i] = eeprom_read(i+4); |
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} |
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global_cell_nr[i] = 0; //zero terminated! |
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} |
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void on_initial_recieve(void) |
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{ |
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char imei[16]; |
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char* ptr; |
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char i; |
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char buf[2]; |
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if (strstr(global_serial_recieve_buffer,"+WIND: 11") != 0) |
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{ |
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global_modem_init = 1; |
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ptr = strstr(global_serial_recieve_buffer,"cgsn"); |
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ptr +=4; |
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strncpy(imei, ptr,15); |
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imei[15] = 0; |
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reset_recieve_buffer(); |
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} |
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} |
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void on_recieve(void) |
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{ |
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char tmp[3]; |
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char* ptr; |
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tmp[0]=0; |
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if (global_recieve_done == 0 || global_message_buffer_length1 == 0) |
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return; |
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| 381 |
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if (strstr(global_message_buffer1,"CMTI") != 0) // here we handles a incomming SMS |
| 382 |
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{ |
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ptr = strstr(global_message_buffer1,","); // finds the point just before the nr. of the SMS. |
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strcat(tmp,ptr+1); // puts that number in tmp |
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global_sms_recieve_number[0] = 0; // wanna be sure that we write the new number from global_sms_recieve_number[0] |
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strcat(global_sms_recieve_number, tmp); // puts the sms number into the global variable. |
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sms_recieved(); |
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} |
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reset_recieve_buffer(); |
| 390 |
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} |
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void sms_recieved(void) |
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{ |
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char buf[4]; |
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char i,imei; |
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char pos; |
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sprintf(global_serial_send, "AT+CMGR=%s\r", global_sms_recieve_number); // formates the variable that sends commands to the SMS modem. |
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serial_send(); // Sends the command. |
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| 401 |
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while(strstr(global_message_buffer1, "OK") == 0) // stays here until we recieve a "OK" from the modem. |
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DelayMs(1); |
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DelayUs(10); |
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| 406 |
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for (i=0; global_message_buffer2[i] != ':' && global_message_buffer2[i] != 0; ++i) |
| 407 |
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{ |
| 408 |
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buf[i] = global_message_buffer2[i]; |
| 409 |
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} |
| 410 |
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| 411 |
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buf[i] = 0; |
| 412 |
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imei = atoi(buf); |
| 413 |
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| 414 |
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if (imei == global_imei_tversum) |
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{ |
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i++; //spring over ':' |
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pos = 0; |
| 418 |
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for ( ; global_message_buffer2[i] != ':'; ++i, ++pos) |
| 419 |
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{ |
| 420 |
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global_cell_nr[pos] = global_message_buffer2[i]; |
| 421 |
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} |
| 422 |
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global_cell_nr[pos] = 0; //zero terminator |
| 423 |
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| 424 |
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i++; //spring over ':' |
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pos=0; |
| 426 |
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for ( ; global_message_buffer2[i] ; ++i,++pos) |
| 427 |
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{ |
| 428 |
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buf[pos] = global_message_buffer2[i]; |
| 429 |
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} |
| 430 |
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buf[pos]=0; |
| 431 |
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| 432 |
|
global_time_interval = atoi(buf); |
| 433 |
|
global_time_interval *= 60; |
| 434 |
|
eeprom_writer(); // writes the new cell nr. and time interval to the eeprom. |
| 435 |
|
send_sms("conf ok"); |
| 436 |
|
} |
| 437 |
|
|
| 438 |
|
|
| 439 |
|
} |
| 440 |
|
|
| 441 |
|
|
| 442 |
|
|
| 443 |
void main() |
void main() |
| 444 |
{ |
{ |
| 445 |
rs232_init(); |
//////////////////// |
| 446 |
|
// Running Init's // |
| 447 |
|
|
| 448 |
|
// Running init for various components. |
| 449 |
pic18_io_init(); |
pic18_io_init(); |
| 450 |
|
RA5 = 1; // Indicates that the board is running inits. |
| 451 |
|
|
| 452 |
|
rs232_init(); |
| 453 |
|
ad_init(); |
| 454 |
|
lcd_init(0); |
| 455 |
|
interrupt_init(); |
| 456 |
|
sms_init(); |
| 457 |
|
//eeprom_init(); |
| 458 |
|
timer_init(); |
| 459 |
|
eeprom_reader(); |
| 460 |
|
/////////////// |
| 461 |
|
// Main loop // |
| 462 |
|
|
| 463 |
|
DelayMs(50); |
| 464 |
|
reset_recieve_buffer(); |
| 465 |
|
|
| 466 |
|
RA5 = 0; // Inits are done, and RA1 will now work as a error notifier. |
| 467 |
|
|
| 468 |
|
while(1) |
| 469 |
|
{ |
| 470 |
|
// If there happends to be a critical state on the system, we send a sms. |
| 471 |
|
if( (global_temp >= 90 || PWRFAIL == 1 || FIREDET == 0 || FEEDING == 1 || EMPTYTANK == 1) && global_emergency_counter >= 600 ) |
| 472 |
|
{ |
| 473 |
|
send_update(); |
| 474 |
|
global_emergency_counter = 0; |
| 475 |
|
} |
| 476 |
|
// Every X sec. a status sms is send. |
| 477 |
|
if(global_time_counter >= 3600) |
| 478 |
|
{ |
| 479 |
|
send_update(); |
| 480 |
|
global_time_counter = 0; |
| 481 |
|
} |
| 482 |
|
// To avoid buffer overrun. |
| 483 |
|
if( global_emergency_counter > 7200 ) |
| 484 |
|
global_emergency_counter = 600; |
| 485 |
|
|
| 486 |
|
// Checks if there has been recieved a config sms. |
| 487 |
|
if(global_interval_changed ) |
| 488 |
|
{ |
| 489 |
|
eeprom_writer(); |
| 490 |
|
global_interval_changed = 0; |
| 491 |
|
} |
| 492 |
|
// Checking if A/D convertion is done, and save the data in global_Pot_?? |
| 493 |
|
if(GODONE==0) |
| 494 |
|
{ |
| 495 |
|
global_Pot_Hi = ADRESH; |
| 496 |
|
global_Pot_Lo = ADRESL; |
| 497 |
|
convertTemp(); |
| 498 |
|
if (global_temp != global_temp_old) |
| 499 |
|
{ |
| 500 |
|
update_lcd(); |
| 501 |
|
global_temp_old = global_temp; |
| 502 |
|
} |
| 503 |
|
GODONE = 1; |
| 504 |
|
} |
| 505 |
|
// Handels the recieve sms'es. |
| 506 |
|
on_recieve(); |
| 507 |
|
} |
| 508 |
} |
} |
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