Here's another simple program that controls a stepper motor. /*Bill BaiStepper Motor Controller*/#include <avr/io.h>#include <avr/interrupt.h>#define CLK 20000000 //20MHz clock//Define functions//======================void ioinit(void); //Initializes IOvoid stepper(void);void init_Timer0(void);//======================int main (void){ ioinit(); //Setup IO pins and defaultsinit_Timer0();sei();//unsigned char step[4] = {0x09,0x0C,0x06,0x03}; while(1) { } return(0);}unsigned char step = 0;void stepper(void){unsigned char step_array[8] = {0x0C,0x04,0x06,0x02,0x03,0x01,0x09,0x08};if(step==8)step=0;PORTC = step_array[step];step++;}unsigned int count = 0;ISR(TIMER0_OVF_vect){ if( count == 100 ) //100*1ms{stepper();}else{count++;}PORTB = PORTB ^ 0xFF;TCNT0 = 0; //reset timer 0 counter}void ioinit (void){ //1 = output, 0 = input DDRB = 0b11111111; //All outputs DDRC = 0b11111111; //All outputs DDRD = 0b11111111; //PORTD (RX on PD0)}//Initialize Timer0void init_Timer0(void){TCNT0 = 255;TCCR0A = 0;TCCR0B = 5;TIMSK0 = 1;} |
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Projects > ATMega328P >
Stepper Motor Controllerposted Nov 2, 2010 3:02 PM by Bill Bai |