When I try to use these same commands but using my LabVIEW interface, I cannot activate the LEDs relying on analog commands for power. Using the “Standard Firmata” uploaded on the Arduino, I can successfully activate LEDs using digital or analog (PWM) commands through the “vvvv” interface. I have only progressed by using the “vvvv” software and seeing how pin values and pin modes are encoded to the Firmata protocol. It does show how to convert the corresponding hexadecimal values to the LSB and MSB bits but I am unsure how to use this. The old Firmata home-page offered one example of a LabVIEW program using the Firmata protocol however, it is only scanning the Firmata report for the analog pin voltage values. The desired goal would be uploading an Arduino sketch with the Firmata functionality so that the Arduino could be completely controlled by the host computer using the LabVIEW interface to enter Firmata-commands (to activate relays, run a bipolar stepper motor, read values from an encoder, etc…).ĭoes anyone have experience with the Firmata protocol and how to implement it using VISA? I would like to use a LabVIEW interface to control an Arduino microcontroller using a Firmata protocol.
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