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#include <pic18.h>
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#include <stdio.h>
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#include <htc.h>
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#include <string.h>
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#include <stdlib.h>
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#include "lcd.h"
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#include "Delay.h"
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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, global_time_counter_image = 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 int global_temp_update_display = 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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32 |
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unsigned int 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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43 |
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44 |
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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 eeprom_writer(void);
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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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////////// INITS //////////
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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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94 |
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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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100 |
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//Reset the A/D result registers
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ADRESH = 0;
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ADRESL = 0;
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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 interrupt_init(void)
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{
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// Assumes that all interrupts default is 0
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PEIE = 1;
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GIE = 1;
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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 rs232_init(void)
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{
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SPEN = 0; // Serial Port Enable Bit... 0 = disabled
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TRISC6 = 0;
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TRISC7 = 1;
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SPBRG = 207; // 1200 baud rate... 25 = 9600
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149 |
// x = (Fosc / (16*[baud rate]) )-1
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TXSTA = 0x24; // Enables BRGH and TXEN inthe TXSTA register
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RCSTA = 0x90; // 0x90 enables SPEN and CREN in the RCSTA register
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}
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void modem_init(void)
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{
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int i;
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char buf[2];
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while ( strstr(global_message_buffer1,"+WIND: 7") == 0 && global_time_counter < 10 ) ; // Waiting for the modem to be ready
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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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164 |
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165 |
while (global_has_imei == 0)
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166 |
{
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167 |
if (strstr(global_message_buffer1,"OK") != 0)
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{
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169 |
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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}
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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?\r");
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serial_send();
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DelayMs(100); // Delay to give the modem a chance to answer.
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184 |
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if (strstr(global_message_buffer1, "+CPIN: SIM PIN") != 0)
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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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189 |
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190 |
while(global_modem_init == 0)
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{
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on_initial_recieve();
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}
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}
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195 |
reset_recieve_buffer();
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sprintf(global_serial_send, "at+cmgd=1,4\r");
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197 |
serial_send();
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while ( strstr(global_message_buffer1,"OK") == 0) ;
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}
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201 |
void serial_send(void)
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{
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203 |
int i;
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char data_byte;
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205 |
for(i = 0; i < BUFFER; i++)
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206 |
{
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207 |
data_byte = global_serial_send[i];
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208 |
if( data_byte == '\r')
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209 |
i = (BUFFER - 1);
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TXREG = data_byte;
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211 |
while(TRMT==0) ;
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212 |
DelayMs(10);
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213 |
}
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214 |
DelayMs(150);
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215 |
global_serial_send[0] = 0;
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DelayMs(150);
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217 |
}
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218 |
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219 |
void on_initial_recieve(void)
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{
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221 |
// can't se what the outcommented lines in here sould do, that make any sence.
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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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////////// INTERRUPT HANDLER //////////
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void interrupt interrupt_handler(void)
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{
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// 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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serial_recieved();
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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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////////// INTERRUPT TRIGGED //////////
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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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269 |
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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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else
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{
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global_serial_recieve_buffer[0] = 0;
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global_serial_byte_counter = 0;
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return;
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}
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279 |
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280 |
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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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282 |
// 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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288 |
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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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292 |
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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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296 |
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297 |
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298 |
global_serial_byte_counter = 0;
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299 |
}
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300 |
}
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301 |
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302 |
void timer1_interrupt(void)
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303 |
{
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304 |
TMR1H = 0xEF;
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305 |
TMR1L = 0xFF;
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306 |
global_time_counter++;
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307 |
global_emergency_counter++;
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308 |
// RA1 = !RA1;
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309 |
}
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310 |
////////// ORDENARY FUNKTIONS //////////
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311 |
void update_lcd(void)
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312 |
{
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313 |
if(global_temp_update_display != global_time_counter)
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314 |
{
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315 |
// lcd_clear();
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316 |
lcd_goto(0x00);
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317 |
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318 |
sprintf(global_lcd_buf, "Temp: %3d", global_temp);
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lcd_puts(global_lcd_buf);
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320 |
global_temp_update_display = global_time_counter;
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}
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322 |
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}
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324 |
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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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330 |
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global_sms_counter++;
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}
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333 |
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void send_sms(const unsigned char* payload)
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{
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336 |
sprintf(global_serial_send, "at+cmgs=\"%s\"\r", global_cell_nr);
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337 |
serial_send();
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sprintf(global_serial_send, "%s%c", payload, 0x1A);
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339 |
serial_send();
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340 |
DelayMs(150);
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if(global_sms_counter % 4 == 0)
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{
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343 |
eeprom_writer();
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sprintf(global_serial_send, "at+cmgd=1,3\r");
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345 |
serial_send();
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346 |
while ( strstr(global_message_buffer1,"OK") == 0) ;
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347 |
}
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348 |
}
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349 |
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350 |
void convert_temp()
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351 |
{
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352 |
short adVal;
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353 |
adVal = (global_Pot_Hi << 8) | global_Pot_Lo;
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354 |
if( adVal >=840 )
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355 |
global_temp = 100;
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356 |
else
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357 |
global_temp = (unsigned char) (adVal / 8.3886);
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358 |
}
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359 |
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360 |
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361 |
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362 |
void eeprom_writer(void)
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363 |
{
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364 |
char len,i;
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365 |
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366 |
len = strlen(global_cell_nr);
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367 |
eeprom_write(0, (global_time_interval/60));
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368 |
eeprom_write(1, global_sms_counter>>8);
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369 |
eeprom_write(2, global_sms_counter);
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370 |
eeprom_write(3, len);
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371 |
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372 |
for (i=0; i<len; ++i)
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373 |
{
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374 |
eeprom_write(i+4, global_cell_nr[i] );
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375 |
}
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376 |
}
|
377 |
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378 |
void eeprom_reader(void)
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379 |
{
|
380 |
char len,i;
|
381 |
|
382 |
global_time_interval = eeprom_read(0);
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383 |
global_time_interval *= 60;
|
384 |
global_sms_counter = (eeprom_read(1)<<8) | eeprom_read(2);
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385 |
len = eeprom_read(3);
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386 |
|
387 |
for (i=0; i<len; ++i)
|
388 |
{
|
389 |
global_cell_nr[i] = eeprom_read(i+4);
|
390 |
}
|
391 |
|
392 |
global_cell_nr[i] = 0; //zero terminated!
|
393 |
}
|
394 |
|
395 |
|
396 |
void on_recieve(void)
|
397 |
{
|
398 |
char tmp[3];
|
399 |
char* ptr;
|
400 |
tmp[0]=0;
|
401 |
|
402 |
if (global_recieve_done == 0 || global_message_buffer_length1 == 0)
|
403 |
return;
|
404 |
|
405 |
if (strstr(global_message_buffer1,"CMTI") != 0) // here we handles a incomming SMS
|
406 |
{
|
407 |
ptr = strstr(global_message_buffer1,","); // finds the point just before the nr. of the SMS.
|
408 |
strcat(tmp,ptr+1); // puts that number in tmp
|
409 |
global_sms_recieve_number[0] = 0; // wanna be sure that we write the new number from global_sms_recieve_number[0]
|
410 |
strcat(global_sms_recieve_number, tmp); // puts the sms number into the global variable.
|
411 |
sms_recieved();
|
412 |
}
|
413 |
reset_recieve_buffer();
|
414 |
}
|
415 |
|
416 |
void sms_recieved(void)
|
417 |
{
|
418 |
char buf[4];
|
419 |
char i,imei;
|
420 |
char pos;
|
421 |
|
422 |
sprintf(global_serial_send, "AT+CMGR=%s\r", global_sms_recieve_number); // formates the variable that sends commands to the SMS modem.
|
423 |
serial_send(); // Sends the command.
|
424 |
|
425 |
while(strstr(global_message_buffer1, "OK") == 0) // stays here until we recieve a "OK" from the modem.
|
426 |
DelayMs(1);
|
427 |
|
428 |
DelayUs(10);
|
429 |
|
430 |
for (i=0; global_message_buffer2[i] != ':' && global_message_buffer2[i] != 0; ++i)
|
431 |
{
|
432 |
buf[i] = global_message_buffer2[i];
|
433 |
}
|
434 |
|
435 |
buf[i] = 0;
|
436 |
imei = atoi(buf);
|
437 |
|
438 |
if (imei == global_imei_tversum)
|
439 |
{
|
440 |
i++; //spring over ':'
|
441 |
pos = 0;
|
442 |
for ( ; global_message_buffer2[i] != ':'; ++i, ++pos)
|
443 |
{
|
444 |
global_cell_nr[pos] = global_message_buffer2[i];
|
445 |
}
|
446 |
global_cell_nr[pos] = 0; //zero terminator
|
447 |
|
448 |
i++; //spring over ':'
|
449 |
pos=0;
|
450 |
for ( ; global_message_buffer2[i] ; ++i,++pos)
|
451 |
{
|
452 |
buf[pos] = global_message_buffer2[i];
|
453 |
}
|
454 |
buf[pos]=0;
|
455 |
|
456 |
global_time_interval = atoi(buf);
|
457 |
global_time_interval *= 60;
|
458 |
eeprom_writer(); // writes the new cell nr. and time interval to the eeprom.
|
459 |
send_sms("conf ok");
|
460 |
}
|
461 |
|
462 |
|
463 |
}
|
464 |
|
465 |
void Delay(int time)
|
466 |
{
|
467 |
int wanted = (global_time_counter + time) % global_time_interval;
|
468 |
|
469 |
while (global_time_counter < wanted) ;
|
470 |
}
|
471 |
|
472 |
void main()
|
473 |
{
|
474 |
////////////////////
|
475 |
// Running Init's //
|
476 |
|
477 |
// Running init for various components.
|
478 |
pic18_io_init();
|
479 |
RA5 = 1; // Indicates that the board is running inits.
|
480 |
|
481 |
rs232_init();
|
482 |
ad_init();
|
483 |
lcd_init(0);
|
484 |
lcd_clear();
|
485 |
lcd_home();
|
486 |
interrupt_init();
|
487 |
timer_init();
|
488 |
modem_init();
|
489 |
eeprom_reader();
|
490 |
///////////////
|
491 |
// Main loop //
|
492 |
|
493 |
DelayMs(50);
|
494 |
reset_recieve_buffer();
|
495 |
|
496 |
RA5 = 0; // Inits are done, and RA1 will now work as a error notifier.
|
497 |
|
498 |
while(1)
|
499 |
{
|
500 |
// If there happends to be a critical state on the system, we send a sms.
|
501 |
if( (global_temp >= 90 || PWRFAIL == 1 || FIREDET == 0 || FEEDING ==1 ) && global_emergency_counter >= 600 )
|
502 |
{
|
503 |
send_update();
|
504 |
global_emergency_counter = 0;
|
505 |
}
|
506 |
|
507 |
// Every X sec. a status sms is send.
|
508 |
if(global_time_counter >= global_time_interval)
|
509 |
{
|
510 |
send_update();
|
511 |
global_time_counter = 0;
|
512 |
}
|
513 |
// To avoid buffer overrun.
|
514 |
if( global_emergency_counter > 7200 )
|
515 |
global_emergency_counter = 600;
|
516 |
|
517 |
// Checks if there has been recieved a config sms.
|
518 |
if(global_interval_changed )
|
519 |
{
|
520 |
eeprom_writer();
|
521 |
global_interval_changed = 0;
|
522 |
}
|
523 |
// Checking if A/D convertion is done, and save the data in global_Pot_??
|
524 |
if(GODONE==0)
|
525 |
{
|
526 |
global_Pot_Hi = ADRESH;
|
527 |
global_Pot_Lo = ADRESL;
|
528 |
convert_temp();
|
529 |
update_lcd();
|
530 |
GODONE = 1;
|
531 |
}
|
532 |
// Handels the recieve sms'es.
|
533 |
on_recieve();
|
534 |
}
|
535 |
}
|