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Initial Arduino IDE based on Processing.

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This commit is contained in:
David A. Mellis
2005-08-25 21:06:28 +00:00
commit 9fc5aa63f6
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102
build/shared/lib/avrlib/rsl/avrcore.c Executable file
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/*! \file avrcore.c \brief AVR-Core Board Driver Functions. */
//*****************************************************************************
//
// File Name : 'avrcore.c'
// Title : AVR-Core Board Driver Functions
// Author : Pascal Stang - Copyright (C) 2004
// Created : 2004.10.1
// Revised : 2004.10.1
// Version : 0.1
// Target MCU : Atmel AVR series
// Editor Tabs : 4
//
// This code is distributed under the GNU Public License
// which can be found at http://www.gnu.org/licenses/gpl.txt
//
//*****************************************************************************
//----- Include Files ---------------------------------------------------------
#include <avr/io.h> // include I/O definitions (port names, pin names, etc)
#include <avr/signal.h> // include "signal" names (interrupt names)
#include <avr/interrupt.h> // include interrupt support
#include "global.h" // include our global settings
#include "avrcore.h"
// globals
u08 AvrcoreLatch;
// functions
void avrcoreInit(void)
{
// initialize ports to input with pullup
// (this is done to avoid contentions and input-pin oscillation)
outb(DDRA, 0x00);
outb(DDRB, 0x00);
outb(DDRC, 0x00);
outb(DDRD, 0x00);
outb(DDRE, 0x00);
outb(DDRF, 0x00);
outb(PORTA, 0xFF);
outb(PORTB, 0xFF);
outb(PORTC, 0xFF);
outb(PORTD, 0xFF);
outb(PORTE, 0xFF);
outb(PORTF, 0xFF);
// turn on RAM interface
sbi(MCUCR, SRE);
// initialize RAM page
avrcoreSetRamPage(0);
// initialize LEDs
avrcoreSetLeds(0);
// set serial power to on by default
avrcoreSetSerialPortPower(1);
}
void avrcoreSetRamPage(u08 page)
{
// update latch state
AvrcoreLatch &= ~AVRCORELATCH_ADDRMASK;
AvrcoreLatch |= page & AVRCORELATCH_ADDRMASK;
// write new latch state to latch
AVRCORELATCH = AvrcoreLatch;
}
void avrcoreSetLeds(u08 leds)
{
// NOTE: LEDs are negative-logic (active-low)
// update latch state
AvrcoreLatch |= AVRCORELATCH_LEDMASK;
AvrcoreLatch &= ~(leds<<4);
// write new latch state to latch
AVRCORELATCH = AvrcoreLatch;
}
void avrcoreSetLedsOn(u08 leds)
{
// NOTE: LEDs are negative-logic (active-low)
// update latch state to turn on inidicated leds
AvrcoreLatch &= ~(leds<<4);
// write new latch state to latch
AVRCORELATCH = AvrcoreLatch;
}
void avrcoreSetLedsOff(u08 leds)
{
// NOTE: LEDs are negative-logic (active-low)
// update latch state to turn off inidicated leds
AvrcoreLatch |= (leds<<4);
// write new latch state to latch
AVRCORELATCH = AvrcoreLatch;
}
void avrcoreSetSerialPortPower(u08 on)
{
// this function simply manipulates LED3/power control
if(on)
AvrcoreLatch &= ~(0x80);
else
AvrcoreLatch |= (0x80);
// write new latch state to latch
AVRCORELATCH = AvrcoreLatch;
}