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#include <pic18.h>
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#include <stdio.h>
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#include <string.h>
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#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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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_data;
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unsigned char global_serial_recieve_buffer[LCD_LENGTH];
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bit global_recieve_done = 0;
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int global_serial_byte_counter = 0;
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void serial_recieved(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 left justified
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ADFM=0;
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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)
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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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// 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 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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}
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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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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 sms_init(void)
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{
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}
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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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}
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void serial_send(void)
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{
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int i;
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char tosend[3];
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char data;
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sprintf(tosend,"%s", "at\r");
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for(i = 0; i < 3; i++)
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{
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data = tosend[i];
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TXREG = data;
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while(TRMT==0)
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DelayMs(1000);
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}
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}
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void serial_recieved(void)
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{
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char data, saved_data[LCD_LENGTH];
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data = RCREG;
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global_serial_recieve_buffer[global_serial_byte_counter] = data;
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if(data == '\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 main()
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{
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/////////////////////////////////////////////
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// Running Init's
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// Running init for various components.
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//AD_init();
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ad_init();
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rs232_init();
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pic18_io_init();
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lcd_init(0);
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interrupt_init();
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/////////////////////////////////////////////
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// Main loop
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while(1)
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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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GODONE = 1;
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}
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if( global_recieve_done == 1 )
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{
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lcd_clear();
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lcd_goto(0x00);
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lcd_puts(global_serial_recieve_buffer);
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global_recieve_done = 0;
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}
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}
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}
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