Roboard Simple Example of Digital IO

[RoWayne]

I have the Roboard, loaded the OS, have MS development studio and a pretty good programmer. However, all the examples I find for the Roboard are to control a complex organization of Servos (Play, replay, etc).

Does anyone have the simplest main() loop code example minimum which can designate a pin for digital input and a pin for digital output? From that I should be able to program till the late hours of the night.

The available downloads (that I have found) from the Roboard site all deal with PWM/Servos.

I have done a lot of programming in various languages and using various processors (embedded or other) but seem to have a hard time finding the examples to get going on this new project of mine.

[roboard]

Code: Select all

#include <stdio.h>
#include <roboard.h>

int main() {
    int val;

    roboio_SetRBVer(RB_100);  // set the RoBoard version
    // roboio_SetRBVer(RB_110);  // use this instead if your RoBoard is RB-110

    // use all PWM channels as GPIO channels
    if (rcservo_Initialize(RCSERVO_USENOCHANNEL) == false)
    {
        printf("ERR: rcservo_Initialize() fails (%s)!\n", roboio_GetErrMsg());
        return -1;
    }

    printf("out logic 1 on PWM channel 0 (pin: S1)\n");
    rcservo_Outp(0, 1);
    getchar();

    printf("out logic 0 on PWM channel 0 (pin: S1)\n");
    rcservo_Outp(0, 0);
    getchar();

    printf("read digital input from PWM channel 1 (pin: S2)\n");
    val = rcservo_Inp(1);
    printf("the value of digital input is %d\n", val);
    getchar();

    rcservo_Close();
    return 0;
}


[RoWayne]

Thanks very much! That was exactly the example I was looking for. Now I just have to build the roboio.lib for MSDEV 6.0! It seems to be fighting me with the various DEFS needed. right now it has initialize errors.