skarg
131 lines
3.8 KiB
C
131 lines
3.8 KiB
C
/**************************************************************************
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*
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* Copyright (C) 2003 Mark Norton
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* Functional
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* Description: Handles the init code for the Microchip microprocessor
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*
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*********************************************************************/
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#include <string.h>
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#include <stdint.h>
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#include "hardware.h"
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/* define this to enable ICD */
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/*#define USE_ICD */
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/* Configuration Bits */
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#pragma config OSC = HS
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#pragma config PWRT = ON
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#pragma config BOR = ON, BORV = 42
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#pragma config CCP2MUX = ON
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#pragma config STVR = ON
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#pragma config LVP = OFF
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#pragma config CP0 = OFF
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#pragma config CP1 = OFF
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#pragma config CP2 = OFF
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#pragma config CP3 = OFF
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#pragma config CPB = OFF
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#pragma config CPD = OFF
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#pragma config WRT0 = OFF
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#pragma config WRT1 = OFF
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#pragma config WRT2 = OFF
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#pragma config WRT3 = OFF
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#pragma config WRTB = OFF
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#pragma config WRTC = OFF
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#pragma config WRTD = OFF
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#pragma config EBTR0 = OFF
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#pragma config EBTR1 = OFF
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#pragma config EBTR2 = OFF
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#pragma config EBTR3 = OFF
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#pragma config EBTRB = OFF
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#ifdef USE_ICD
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#pragma config WDT = OFF, WDTPS = 128
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#pragma config DEBUG = ON
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#else
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#pragma config WDT = ON, WDTPS = 128
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#pragma config DEBUG = OFF
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#endif /* USE_ICD */
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#pragma romdata
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/****************************************************************************
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* DESCRIPTION: Initializes the PIC, its timers, WDT, etc.
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* RETURN: none
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* ALGORITHM: none
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* NOTES: none
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*****************************************************************************/
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void init_hardware(void)
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{
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/* If the processor gets a power on reset then we can do something. */
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/* We should not get a reset unless there has been */
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/* some kind of power line disturbance. */
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if (RCONbits.POR) {
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/*do something special! */
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}
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GLOBAL_INT_DISABLE();
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/* Setup PORT A */
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TRISA = PORT_A_TRIS_MASK;
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/* PORT A can have analog inputs or digital IO */
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ADCON1 = NO_ANALOGS;
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/* Setup PORT B */
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TRISB = PORT_B_TRIS_MASK;
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/* Setup PORT C */
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TRISC = PORT_C_TRIS_MASK;
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/* setup zero cross interrupt to trigger on a low to high edge */
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INTCON2bits.INTEDG0 = 1;
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/* setup ABUS */
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/*ABUS_LED_OFF(); */
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/*SSPADD = ABUS_DEFAULT_ADDR; */
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/*SSPCON1 = (ABUS_SLAVE_MASK | ABUS_CLK_ENABLE | ABUS_MODE_SETUP); */
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/*ABUS_Clear_SSPBUF(); */
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/* setup timer2 to reset every 1ms */
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CloseTimer2();
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PR2 = 250;
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OpenTimer2(T2_PS_1_4 & T2_POST_1_5 & 0x7F);
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/* Setup our interrupt priorities ---------> all low priority */
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RCONbits.IPEN = 1;
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IPR1 = 0;
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IPR2 = 0;
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INTCON2bits.TMR0IP = 0;
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INTCON2bits.RBIP = 0;
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INTCON3 = 0;
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/* Enable interrupts */
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TIMER2_INT_ENABLE();
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PERIPHERAL_INT_ENABLE();
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GLOBAL_INT_ENABLE();
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/* Turn on the Zero cross interrupt */
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INTCONbits.INT0F = 0;
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INTCONbits.INT0E = 1;
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}
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