Unable to read pins on Uno Power on using Firmata

Using Arduino Interfacing w/ Software on the Computer
#1

Hello guys,

I have standard Firmata loaded on my Arduino UNO and writing an application in vb.net that uses firmatavb.dll library.

When I power on the Arduino, even though I have digital pin 5 connected to a closed switch (i.e. +5v flowing to pin 5). The pin register low. The only way for it to read high is by using a diagnostic software (i.e. Firmata_test.exe) and physically flipping the switch on and off. After that, the pin reads high.

Using a simple sketch, the pin does register high at power on.

Any ideas?

Thanks

#2

Are you telling the firmata.dll that the pin is an INPUT pin? They are by default on the Arduino, but maybe the dll makes some different assumptions.

#3

Hi,

Yes I am "initializing the pins" as input and output pins via the DLL.

#4