Using ?AI command

In Roborun utility, I\'m able to send the \"?AI n\" command to check the analog input 1 status and it works very well.

If I try to use the same command in my C application, it does not work and always return a 0 value even if the analog input has a different value.

I use the SetCommand(_AI, 1, report) instruction, it gives me no error but always returns 0 and not the correct input value.

Do I have to use a different instruction in my C program?

I have to say that I\'m able to successfully use all the other commands in my C program to control the acceleration and the motor direction without problems.

The only thing that does not work is the SetCommand(_AI, 1, report).

May be it is not correct?

you need to use getvalue(_AI ...)

getvalue is for reading parameters as you would with ? via terminal

setcommand is for sending commands as you would with !

getconfig is for reading configurations as with ~
setconfig is for writing configuration as with ^

I did a mistake, in my previous post.

I\'m using GetValue(_AI, 1, report) and not SetCommand(..) but it always returns me a 0 value.

The syntax is

int GetValue(int operatingItem, int index, int &result)

you must pass the address of the result variable.

If this is what you are doing, then check with other queries, like _V volts for example to verify the the problem is unique to _AI

I tried with device.GetConfig(_V, result) but I always get 0 value.

To read analog values, I use this very simple code:

If I send the same command in Roborun utility it works fine.
Moreover, the other commands like device.SetCommand(_MG, 1, 1) work very well so I do not know why the _AI and _V commands don\'t work.

Can you help me with this, please?

I have to order three additional SDC2150 since I have to control additional motors but I need to be able to read analog and digital inputs, too.

you use GetConfig

you must use GetValue

Thanks a lot!