stepper

useful debounsing description: http://stackoverflow.com/questions/16306901/c-program-a-button-to-perform-a-task-once-when-pressed-latch

how to control stepper motor from raspberry pi and bcm2835

so, there are effective sequense of instructions for stepper motor: 8-steps while ( counter > 0 ) { bcm2835_gpio_write(PIN1, HIGH); bcm2835_gpio_write(PIN2, LOW); bcm2835_gpio_write(PIN3, LOW); bcm2835_gpio_write(PIN4, HIGH); bcm2835_delay(50); bcm2835_gpio_write(PIN1, LOW); bcm2835_gpio_write(PIN2, LOW); bcm2835_gpio_write(PIN3, LOW); bcm2835_gpio_write(PIN4, HIGH); bcm2835_delay(50); bcm2835_gpio_write(PIN1, LOW); bcm2835_gpio_write(PIN2, HIGH); bcm2835_gpio_write(PIN3, LOW); bcm2835_gpio_write(PIN4, HIGH); bcm2835_delay(50); bcm2835_gpio_write(PIN1, LOW); bcm2835_gpio_write(PIN2, HIGH); bcm2835_gpio_write(PIN3, LOW); bcm2835_gpio_write(PIN4, LOW); bcm2835_delay(50); bcm2835_gpio_write(PIN1, LOW); bcm2835_gpio_write(PIN2, HIGH); bcm2835_gpio_write(PIN3, HIGH); bcm2835_gpio_write(PIN4, LOW); bcm2835_delay(50); bcm2835_gpio_write(PIN1, LOW); bcm2835_gpio_write(PIN2, LOW); bcm2835_gpio_write(PIN3, HIGH); bcm2835_gpio_write(PIN4, LOW); bcm2835_delay(50); bcm2835_gpio_write(PIN1, HIGH); bcm2835_gpio_write(PIN2, LOW); bcm2835_gpio_write(PIN3, HIGH); bcm2835_gpio_write(PIN4, LOW); bcm2835_delay(50); bcm2835_gpio_write(PIN1, HIGH); bcm2835_gpio_write(PIN2, LOW); bcm2835_gpio_write(PIN3, LOW); bcm2835_gpio_write(PIN4, LOW); bcm2835_delay(50); counter -= 1; }

4-steps: while ( counter > 0 ) { bcm2835_gpio_write(PIN1, HIGH); bcm2835_gpio_write(PIN2, LOW); bcm2835_gpio_write(PIN3, LOW); bcm2835_gpio_write(PIN4, HIGH); bcm2835_delay(50);

    bcm2835_gpio_write(PIN1, LOW);
    bcm2835_gpio_write(PIN2, HIGH);
    bcm2835_gpio_write(PIN3, LOW);
    bcm2835_gpio_write(PIN4, HIGH);
    bcm2835_delay(50);

    bcm2835_gpio_write(PIN1, LOW);
    bcm2835_gpio_write(PIN2, HIGH);
    bcm2835_gpio_write(PIN3, HIGH);
    bcm2835_gpio_write(PIN4, LOW);
    bcm2835_delay(50);

    bcm2835_gpio_write(PIN1, HIGH);
    bcm2835_gpio_write(PIN2, LOW);
    bcm2835_gpio_write(PIN3, HIGH);
    bcm2835_gpio_write(PIN4, LOW);
    bcm2835_delay(50);

    counter -= 1;
}

 /*
steps8[0] = "1 0 0 1";
steps8[1] = "0 0 0 1";
steps8[2] = "0 1 0 1";
steps8[3] = "0 1 0 0";
steps8[4] = "0 1 1 0";
steps8[5] = "0 0 1 0";
steps8[6] = "1 0 1 0";
steps8[7] = "1 0 0 0";

printf("Input 4 or 8 steps per cycle '0' for exit: ");
scanf("%d", &scale);
while ( scale != 4 && scale != 8 ) {
    if ( scale == 0 ) {
        break;
    }
    printf("Input 4 or 8 steps per cycle '0' for exit: ");
    scanf("%d", &scale);
}


if ( scale != 0 ) {
    counter = 1;
}

if ( scale == 4 ) {
    prepareStep(steps4, scale, counter);
} else if ( scale == 8 ) {
    prepareStep(steps8, scale, counter);
} else {
    return 0;
}
*/