init.c

Hitech microchip PIC C18 Compiler

#include <htc.h>

/*** Device configuration registers ***/
/*
 * Osc. system clock switching = Enabled
 * Oscillator type = RC-OSC2 as RA6
 */
__CONFIG(1, OSCSEN & RCRA6);

/*
 * Brown-out reset = Enabled
 * Brown-out detect voltage = 4.5V
 * Power-up timer = Enabled
 * Watchdog postscaler = 1:128
 * Watchdog timer = Disabled-Controlled by SWDTEN bit
 */
__CONFIG(2, BOREN & BORV45 & PWRTEN & WDTPS128 & WDTDIS);

/*
 * CCP Multiplexed = RC1
 */
__CONFIG(3, CCP2RC1);

/*
 * Background debugger = Disabled
 * Low-voltage programming = Disabled
 * Stack error reset = Disabled
 */
__CONFIG(4, DEBUGDIS & LVPDIS & STVRDIS);

/*
 * Code protect sector 3 = Disabled
 * Code protect sector 2 = Disabled
 * Code protect sector 1 = Disabled
 * Code protect sector 0 = Disabled
 * Protect EEPROM = Disabled
 * Code protect boot block = Disabled
 */
__CONFIG(5, 0xFFFF);

/*
 * Write protect sector 3 = Disabled
 * Write protect sector 2 = Disabled
 * Write protect sector 1 = Disabled
 * Write protect sector 0 = Disabled
 * Write protect EEPROM = Disabled
 * Write protect boot block = Disabled
 * Write protect config. = Disabled
 */
__CONFIG(6, 0xFFFF);

/*
 * Read protect sector 3 = Disabled
 * Read protect sector 2 = Disabled
 * Read protect sector 1 = Disabled
 * Read protect sector 0 = Disabled
 * Read protect boot block = Disabled
 */
__CONFIG(7, 0xFFFF);

// Peripheral initialization function
void init(void){
	/***** Common Code ****
	 *  Timer 0 interrupt is enabled
	 *  Peripheral interrupts will be enabled
	 *  All interrupts temporarily disabled during init
	 */
	INTCON	= 0b01100000;
	/*
	 *  Timer 0 interrupt priority is high
	 */
	INTCON2	= 0b00000100;
	
	/***** 18F452 Code ****
	 *  Interrupt priority system enabled
	 */
	RCON	= 0b10000000;
	
	/***** Timer 0 Code ****
	 *  Timer prescale ratio = 1:16
	 *  Timer 0 is clocked internally.
	 *  16-Bit operation
	 *  Timer 0 is active
	 */
	T0CON	= 0b10000011;
	
	/***** Timer 1 Code ****
	 *  Timer 1 is active
	 *  Timer 1 derived from system clock
	 *  Not synchronised with external input
	 *  Oscillator turned off to save power
	 *  Timer prescale ratio = 1:8
	 *  Timer 1 is read in one 16-bit operation
	 */
	T1CON	= 0b10110101;
	/*
	 *  Timer 1 interrupt is enabled
	 */
	PIE1	= 0b00000001;
	/*
	 *  Timer 1 interrupt priority is high
	 */
	IPR1	= 0b00000001;
	
	ei();	// Global interrupts enabled
	
}