/*!
lightshow -- lightshow on Experimental Board 1.10
Copyright (C) 2009-2014 ZTEX GmbH
http://www.ztex.de
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 3 as
published by the Free Software Foundation.
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, see http://www.gnu.org/licenses/.
!*/
#include
#define F_CPU 32000000UL
#include
typedef uint8_t byte;
int main(void)
{
// enable 32.768 kHz, 32 MHz, 2 Mhz clocks
asm volatile (
"ldi r24,0xd8" "\n\t"
"ldi r23,7" "\n\t"
"out 0x34,r24" "\n\t"
"sts 0x50,r23"
::: "r24", "r23"
);
// wait until clocks are ready
while ( (OSC.STATUS & 7) != 7 ) { }
// enable run time configuration of 32 MHz and 2 MHz clocks; select 32 MHz clock as system clock
asm volatile (
"ldi r24,0xd8" "\n\t"
"ldi r23,1" "\n\t"
"out 0x34,r24" "\n\t"
"sts 0x60,r23" "\n\t"
"out 0x34,r24" "\n\t"
"sts 0x68,r23" "\n\t"
"out 0x34,r24" "\n\t"
"sts 0x40,r23"
::: "r24", "r23"
);
// disable JTAG at portb
asm volatile (
"ldi r24,0xd8" "\n\t"
"ldi r23,1" "\n\t"
"out 0x34,r24" "\n\t"
"sts 0x96,r23" "\n\t"
::: "r24", "r23"
);
// clock output to PD7
PORTCFG.CLKEVOUT = 2;
PORTD.DIR = 128;
PORTJ.DIR = 0; // input: 4 LED's
PORTH.DIR = 0; // input: 8 LED's
PORTD.DIR |= 15; // output: 4 LED's
PORTF.DIR = 255; // output: 8 LED's
while (1) {
PORTD.OUT = PORTJ.IN;
PORTF.OUT = PORTH.IN;
}
}
