MPM controlled 16ch RGB LED dimmer
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/***************************************************************************
* 16ch RGB 8bit PWM controller *
* *
* Copyright (C) 2011 - 2012 by Olaf Rempel *
* razzor AT kopf MINUS tisch DOT de *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; version 2 of the License, *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include <avr/io.h>
#include <avr/interrupt.h>
#include <stdio.h>
#include "rgb16mpm.h"
/*
* using ATmega32 @8MHz:
* Fuse H: 0xD9 (no bootloader, jtag disabled)
* Fuse L: 0xD4 (int. 8MHz Osz, fast rising power, no BOD)
*
* PA0..7 -> COL1..8
* PC0..7 -> COL9..16
* PB0 / PD7(OC2) -> ROW2/GREEN (OC2 not used)
* PB1 / PD5(OC1A) -> ROW1/RED (OC1A not used)
* PB2 / PD4(OC1B) -> ROW4 (OC1B not used)
* PB3(OC0) / PD6 -> ROW3/BLUE (OC0 not used)
* PD0 -> RXD
* PD1 -> TXD
* PD2 -> /RX_TX
* PD3 -> /LED
*/
int main(void) __attribute__ ((noreturn));
int main(void)
{
DDRD = (1<<LED);
PORTD = (1<<LED);
/* timer1: FCPU/1024 */
TCCR1B = (1<<CS12) | (1<<CS10);
TCNT1 = 0x0000;
eeprom_read(1);
rgb_init();
mpm_init();
demomode_init(nvram_data.demomode);
sei();
uint16_t wait = 0;
while (1) {
mpm_check_transfer();
/* no delay or timeout reached */
if (wait == 0 || (TIFR & (1<<TOV1))) {
TIFR = (1<<TOV1);
/* execute periodic democode */
wait = demomode_run();
rgb_update(COLOR_MASK, UPDATE_BLOCKING);
if (wait > 0) {
/* x * 8 / (8MHz/1024) */
TCNT1 = 0xFFFF - (wait << 3);
}
}
}
}