mca-pendel/sketches/led-driver/old-but-gold.jojo

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2018-03-23 00:03:12 +01:00
#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();
}
}
}