Man Ir radusies problēma ar RGB Gaismas diožu driveri (automatiski pāriet pari visam varanīksnes krāsām).
Kodu uzmeklēju internetā.
/*********************************************
* Chip type : ATtiny13
* Clock frequency : Internal clock 1 Mhz (factory default)
*********************************************/
#define F_CPU 1000000UL // 1 MHz
#include <avr/io.h>
#include <avr/sleep.h>
#include <inttypes.h>
#include <avr/delay.h>
#include <avr/interrupt.h>
#include <avr/signal.h>
//Hardware definitions
#define PORT PORTB
#define PIN PINB
#define DDR DDRB
#define REDLED PB2
#define GREENLED PB1
#define BLUELED PB0
#define BTN PB3
//Fading States
#define REDtoYELLOW 0
#define YELLOWtoGREEN 1
#define GREENtoCYAN 2
#define CYANtoBLUE 3
#define BLUEtoVIOLET 4
#define VIOLETtoRED 5
//Less Typing of _
#define BV _BV
//Maximim value for led brightness
#define V_MAX 255
char mode=0;
char state; //Counter for each mode. Reset to 0 while changing modes
//Current color values
unsigned char red;
unsigned char green;
unsigned char blue;
//Predefine function
void button(void);
char state2; //State in the rainbow fade progress
void rainbowfade(int n){
//Go one step through a state machine that fades through the rainbow
//n sets the step increment
//255%n must equal 0
if (state2==REDtoYELLOW) green+=n;
if (state2==YELLOWtoGREEN) red-=n;
if (state2==GREENtoCYAN) blue+=n;
if (state2==CYANtoBLUE) green-=n;
if (state2==BLUEtoVIOLET) red+=n;
if (state2==VIOLETtoRED) blue-=n;
if (red==V_MAX || green==V_MAX || blue==V_MAX || red==0 || green==0 || blue==0){
//Finished fading a color; move on to the next
state2++;
state2%=6;
}
}
void mode1(void){
rainbowfade(1); //Fade 1 step per PWM Cycle
}
void mode2(void){
state++;
if (state%128==0){//Every 128 PWM cycles
//Save old colors
char r=red;
char g=green;
char b=blue;
//Rotate colors
red=g;
green=b;
blue=r;
}
}
void mode3(void){
state++;
if (state%128==0){ //Every 128 PWM Cycles
rainbowfade(255); //Skip to the next color
}
}
void mode0(void);
#define NUM_MODES 4
//Array of mode function pointers
typedef void(*modefn)(void);
modefn modefns[NUM_MODES]={
mode0,
mode1,
mode2,
mode3,
};
modefn current; //Function pointer for current mode
void setmode(char m){
//Switch mode to m
mode=m;
//Reset state
red=255;
green=0;
blue=0;
state=0;
state2=0;
//Set function pointer
current=modefns[(int)mode];
}
void button(){ //Called when the button is pressed
setmode((mode+1)%NUM_MODES);
}
void mode0(void){
PORT|=BV(PB4); //Turn on debug LED
PORT|=(BV(REDLED)| BV(BLUELED)| BV(GREENLED)); //Turn off LEDs
unsigned char n=10;
while (n–) _delay_ms(255); //Wait for a bit so it doesn't wake up while
//the button is still down
PORT&=~BV(PB4); //Turn off debug LED
//Enter Sleep Mode
set_sleep_mode(SLEEP_MODE_PWR_DOWN);
PCMSK=BV(PCINT3);
GIMSK|=BV(PCIE); //Enable PCINTs
GIFR|=BV(PCIF);//Clear flags
sei();
sleep_mode();
//Now, after awakening…
cli(); // Turn off interrupts
setmode(1); //Switch to mode 1
while (n>250){ //wait until button is released
if ((PIN&BV(BTN))!=0){
n++;
}else n=0;
_delay_ms(25);
}
}
SIGNAL(SIG_PIN_CHANGE0){ //Button change, used to wake from sleep, not while running
PORT|=BV(PB4);
}
void timer(void){ //Called once per PWM Cycle
current(); //Let the current mode update colors
}
int main(void){
unsigned char i=0;
//Set pins to output
DDR|= BV(DDB2);
DDR|= BV(DDB1);
DDR|= BV(DDB0);
DDR|= BV(DDB4);
DDRB&=~BV(DDB3); //Set button to input
unsigned char debounce=0;
setmode(1); //Start with mode 1
timer(); //Let mode set initial color
while (1) {
//Software PWM
if (i<red){
PORT &=~ BV(REDLED);
}else{
PORT|=BV(REDLED);
}
if (i<green){
PORT &=~ BV(GREENLED);
}else{
PORT|=BV(GREENLED);
}
if (i<blue){
PORT &=~ BV(BLUELED);
}else{
PORT|=BV(BLUELED);
}
if (i==0){ //After blinking LEDs 255 times
if ((PIN&BV(BTN))==0 && debounce==0){ //Is button down?
button();
debounce=1; //Wait for release
}
if (debounce) debounce++; //Will wrap to 0 and stop counting
timer();
}
i++;
}
return 0; //Will never get here
}
Kods strāda labi ar kopējā mīnusa RGB diodēm, bet tur jau arī ir tā problēma. Man ir kopējā plusa diodes un nav pietiekoši daudz zināšanu, lai izmainītu kodu priekš kopējā plusa diodēm. Vai kāds nevarētu iebīdīt mani pareizajā virzienā uz ko skatīties koda?
PS.
Man arī radušies daži jautājumi par kodēšanu kā tadu.
Vai man janorāda MCU (mikrokontraliera) izejas kā mainīgos? Un pēc tam mainot to vertības mainīt spriegumu iz MCU izejām?
Un vai es varu kodēt Pascal valodā (esmu gadu mācijies skolā tāpēc atvieglotu visu), Galu galā parcompilē uz .HEX tāpāt. Vai valodas izvēle radītu problēmas.
-Niks.
E:
Problēmu sev atrisināju nemaz neskaroties klāt kodam. Izlaidu LED caur NPN tranzistoriem.
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