mywrio's Introduction

myWRIO

C++ API for National Instruments myRIO

This is a framework to use with myRIO. It allows the user to code on the myRIO without LabVIEW. It is based on the official C API, but handles registers communications to provide a high level, arduino like programming.

Documentation found here

The docs are generated with Doxygen. Each line of code is documented and examples are provided for each class. There is a guide to setup Eclipse to use our API.

Blink a LED

#include "MyRIO.h"
using namespace myRIO;
int main() {
    if(!myRIO_init()) {std::cout << "Error initializing myRIO"; return -1;}
  
    bool status = HIGH;
  
    while(1) {
        status=!status
        DIO::writeLed(LED1, status);
        Time::wait_ms(500);
    }
}

Output a PWM signal

#include "MyRIO.h"
using namespace myRIO;
using namespace std;
int main() {
    if(!myRIO_init()) {cout << "Error initializing myRIO"; return -1;}
    // Output a 10kHz, 3.3V PWM signal with a duty cycle of 25% for 10 seconds
    PWM channelC0(PWMC0, 10e3, 25);
    Time::wait_s(10);
}

Generate a sine with AIO class (Analog Input Output)

#include "MyRIO.h"
using namespace myRIO;
using namespace std;
int main() {
    if(!myRIO_init()) {cout << "Error initializing myRIO"; return -1;}
    double fq = 100;
    double vpp = 4;
    double outputFq = 100e3;
    Time timer = Time::stopwatch();
    timer.reset();
    while(1) {
        AIO::writePin(CO0, (vpp/2)*sin(2*3.141592653*fq*timer.elapsed_ns()*1e-9));
        // we cannot measure more than 2 seconds ; reset it before it's too late
        if(timer.elapsed_ns() >= 1e9L)
            timer.reset();
        // convert the frequency to time, then the time to µs
        Time::wait_us(1e6/outputFq);
    }
    return 0;
}