/*
 * mmtest3.c
 *
 * Test three: run the motor continually, slowing it down over time
 *
 * Motor Mind module is conected to PORTA
 * FM pin on MM is connected to  RA1 pin 18
 * LED on RB4 via 1K resistor
 *
 * Mark Crosbie 10/31/98  mark@mastincrosbie.com
 */

#define MOTOR 0x5
#define MMPIN 1
#define LED 4

void main(void) {
  char i;

  set_bit(STATUS, RP0);    /* select the register bank 1 */
  clear_bit(TRISA, MMPIN);  /* Port A.1 is output */
  clear_bit(TRISB, LED);   /* Port RB.4 is output */
  clear_bit(STATUS, RP0);

  /* set the initial speed */
  i = 250;
  while(1) {

    /* start the motor running */
    mm_start(MOTOR, MMPIN, i);
    delay_s(2);

    /* reduce the PWM frequency. This will hit 0 and then roll over to
       231 on the next iteration */
    i = i - 25;

    /* flash the LED */
    set_bit(PORTB, LED);
    delay_s(1);

    clear_bit(PORTB, LED);
    delay_s(1);
 
  }
}