Vibro Motor Click Board

Description

This is an example of using Red Pitaya with the Red Pitaya Click Shield and Vibro Motor Click Board. The program vibrates the Click Shield and the Red Pitaya. The vibration intensity is set by the pwm function.

Required hardware

• Red Pitaya device

• Red Pitaya Click Shield

• Vibro Motor click board

Required software

• 2.00-23 or higher OS

Note

This code is written for 2.00-23 or higher OS. For older OS versions, please check when specific commands were released (a note is added to each command introduced in 2.00 or higher verisons).

Code C

The code should be copied to the Red Pitaya using the “scp” or similar command and compiled on the board.

Note

Instructions on how to compile the code are here.

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#include "rp.h"


#define MIKROBUS 1

// Choose a microbus depending on where the click board is
#if MIKROBUS == 1           // 1 == Microbus 1, 2 == Microbus 2
    #define PWM_PIN RP_DIO1_P
#else
    #define PWM_PIN RP_DIO3_P
#endif


void pwm(int pin, int duty_cycle,int num_seconds)
{
    int period_us = 875;
    int num_periods = 0;
    int pulse_us = (duty_cycle * period_us) / 100;

    // set pin as output
    rp_DpinSetDirection(pin, RP_OUT);

    while (1) {

        // check for end condition (here, 100 periods)  100
        if (num_periods ==  num_seconds *1000 ) {
            break;
        }

        rp_DpinSetState(pin, RP_HIGH);      // set pin state high
        usleep(pulse_us);       // delay for pulse duration
        rp_DpinSetState(pin, RP_LOW);       // set pin state low
        usleep(period_us - pulse_us);       // delay for remaining period
        num_periods++;          // increment number of periods
    }
}

int main (int argc, char **argv) {

    // Initialization of API
    if (rp_Init() != RP_OK) {
        fprintf(stderr, "Red Pitaya API init failed!\n");
        return EXIT_FAILURE;
    }

    // run motor at 50% duty cycle for 3 seconds
    pwm(PWM_PIN, 50, 3);
    // the motor doesn't run at less than 30% power

    // Releasing resources
    rp_Release();

    return EXIT_SUCCESS;
}