204 lines
4.0 KiB
Plaintext
204 lines
4.0 KiB
Plaintext
#define F_CPU 20000000UL
|
|
#include <stdint.h>
|
|
#include <avr/io.h>
|
|
#include <util/delay.h>
|
|
#define BAUD 9600
|
|
#include <util/setbaud.h>
|
|
|
|
|
|
|
|
|
|
void uart_init(void) {
|
|
#define BAUDRATE ((F_CPU)/(BAUD*8UL)-1) // set baud rate value for UBRR
|
|
UBRR0H = (BAUDRATE>>8); // shift the register right by 8 bits to get the upper 8 bits
|
|
UBRR0L = BAUDRATE; // set baud rate
|
|
|
|
// UCSR0A |= (1 << U2X0); // double transmission speed
|
|
// UCSR0B = (1 << TXEN0) | (1 << RXEN0);
|
|
// UCSR0C = (1 << UCSZ01) | (1 << UCSZ00);
|
|
|
|
// UBRR0H = UBRRH_VALUE;
|
|
// UBRR0L = UBRRL_VALUE;
|
|
|
|
|
|
UCSR0A |= _BV(U2X0);
|
|
// UCSR0A &= ~(_BV(U2X0));
|
|
|
|
|
|
// UCSR0C = _BV(UCSZ01) | _BV(UCSZ00); /* 8-bit data */
|
|
UCSR0C = 0x06; /* 8-bit data */
|
|
UCSR0B = _BV(RXEN0) | _BV(TXEN0) | _BV(RXCIE0); /* Enable RX and TX */
|
|
|
|
|
|
}
|
|
|
|
/*
|
|
// f=20MHz -> T=0,05 µs
|
|
uint8_t T0H = 6; // == 0.3 µs ~ 0.4 µs (+- 150ns) == [0.25, 0.55] µs
|
|
uint8_t T1H = 14; // == 0.7 µs ~ 0.8 µs (+- 150ns) == [0.65, 0.95] µs
|
|
uint8_t T0L = 15; // == 0.75 µs ~ 0.85µs (+- 150ns) == [0.70, 1.00] µs
|
|
uint8_t T1L = 8; // == 0.35 µs ~ 0.45µs (+- 150ns) == [0.30, 0.60] µs
|
|
uint8_t RES = 51; // > 50 µs
|
|
*/
|
|
|
|
#define nop __asm__("nop\n\t")
|
|
#define wait6 __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t")
|
|
#define wait8 __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t")
|
|
#define wait14 __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t")
|
|
#define wait15 __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t")
|
|
|
|
uint8_t const CMAX = 32;
|
|
uint8_t const STEPWIDTH = 4;
|
|
|
|
void writeZero();
|
|
void writeOne();
|
|
void writeRGB(uint8_t red, uint8_t green, uint8_t blue);
|
|
|
|
static uint8_t dNext[] = {1,2,0};
|
|
|
|
int main() {
|
|
DDRC = 1; // PORT C0 output
|
|
// uart_init();
|
|
uint8_t d = 0;
|
|
uint8_t r = 120, g = 120, b = 0;
|
|
|
|
/*
|
|
255 0 0
|
|
255 255 0
|
|
0 0 255
|
|
*/
|
|
|
|
|
|
do{
|
|
for(uint8_t i = 120; i > 0; i -= STEPWIDTH) {
|
|
if( i >= 60 )
|
|
writeRGB( 120, (120-i)*2 , 0 );
|
|
if( i <= 60 )
|
|
writeRGB( i, (60+i)/2, 120-i);
|
|
}
|
|
_delay_ms(500);
|
|
|
|
|
|
/*if( d == 0 ) {
|
|
do{
|
|
for( uint8_t i = 0; i < 10; i++) {
|
|
writeRGB(r,g,b);
|
|
}
|
|
for( uint8_t i = 0; i < 10; i++) {
|
|
writeRGB(b,g,r);
|
|
}
|
|
for( uint8_t i = 0; i < 10; i++) {
|
|
writeRGB(g,r,b);
|
|
}
|
|
_delay_ms(1);
|
|
r -=1;
|
|
b +=1;
|
|
}while(r > 0);
|
|
|
|
}
|
|
if( d == 1 ) {
|
|
do{
|
|
for( uint8_t i = 0; i < 10; i++) {
|
|
writeRGB(r,g,b);
|
|
}
|
|
for( uint8_t i = 0; i < 10; i++) {
|
|
writeRGB(b,g,r);
|
|
}
|
|
for( uint8_t i = 0; i < 10; i++) {
|
|
writeRGB(g,r,b);
|
|
}
|
|
_delay_ms(1);
|
|
r +=1;
|
|
g -=1;
|
|
}while(g > 0);
|
|
|
|
}
|
|
if( d == 2 ) {
|
|
do{
|
|
for( uint8_t i = 0; i < 10; i++) {
|
|
writeRGB(r,g,b);
|
|
}
|
|
for( uint8_t i = 0; i < 10; i++) {
|
|
writeRGB(b,g,r);
|
|
}
|
|
for( uint8_t i = 0; i < 10; i++) {
|
|
writeRGB(g,r,b);
|
|
}
|
|
_delay_ms(1);
|
|
b -=1;
|
|
g +=1;
|
|
}while(b > 0);
|
|
|
|
}
|
|
/* for( int i = 0; i<30; i++) {
|
|
// if( d == 0 )
|
|
writeRGB(r,g,b);
|
|
if( d == 1 )
|
|
writeRGB(0,128,0);
|
|
if( d == 2 )
|
|
writeRGB(0,0,128);
|
|
d = dNext[d];
|
|
}*/
|
|
// _delay_ms(500);
|
|
d = dNext[d];
|
|
|
|
|
|
// loop_until_bit_is_set(UCSR0A, UDRE0);
|
|
// UDR0 = 'D';
|
|
|
|
}while(1);
|
|
}
|
|
|
|
int main2( void )
|
|
{
|
|
DDRC = 0xff; // (1 << PC0);
|
|
|
|
while(1) {
|
|
PORTC ^= 0xff; //(1 << PC0);
|
|
_delay_ms(1000);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void writeZero() {
|
|
PORTC = 1;
|
|
wait6;
|
|
PORTC = 0;
|
|
wait15;
|
|
}
|
|
|
|
void writeOne() {
|
|
PORTC = 1;
|
|
wait14;
|
|
PORTC = 0;
|
|
wait8;
|
|
}
|
|
|
|
void writeRGB(uint8_t red, uint8_t green, uint8_t blue) {
|
|
int i,j;
|
|
|
|
for( i = 128; i > 0; i >>= 1 ) {
|
|
if( green & i ){
|
|
writeOne();
|
|
} else {
|
|
writeZero();
|
|
}
|
|
}
|
|
|
|
for( i = 128; i > 0; i >>= 1 ) {
|
|
if( red & i ){
|
|
writeOne();
|
|
} else {
|
|
writeZero();
|
|
}
|
|
}
|
|
|
|
for( i = 128; i > 0; i >>= 1 ) {
|
|
if( blue & i ){
|
|
writeOne();
|
|
} else {
|
|
writeZero();
|
|
}
|
|
}
|
|
}
|