@DJ.... For clarification you only need to call UARTInit once per ARC session?.... Is there a timeout or will it stay initialized until you close out your ARC session?

The UARTInit() will initialize the UART until the EZ-B v4 has been power cycled

@DJ .... Sweet...helps to make my code more efficient..... Love leaning new stuff about the ezb...

I don't want to keep beating a dead horse but for my peace of mind could you two guys try this example and let me know what you RX.

I have a jumper wire connecting D5 and and D6.

Try substituting different values in the $test.

UARTInit(0,1,1000000)

$test1=GetAsByte(125) $test2=GetAsByte(180) $test3=GetAsByte(75) $test4=GetAsByte(255)

$data=$test1+$test2+$test3+$test4

UARTWrite(0,1,$data)

$x = UartAvailable(0, 1)

print("Bytes in buffer: " + $x)

$RX_DATA = UARTRead(0, 1, $x)

print("Received: " + $RX_DATA)

Print(GetByteAt($RX_DATA,0)) Print(GetByteAt($RX_DATA,1)) Print(GetByteAt($RX_DATA,2)) Print(GetByteAt($RX_DATA,3))

What do you expect $data to look like when you do this?

$test1=GetAsByte(125)
$test2=GetAsByte(180)
$test3=GetAsByte(75)
$test4=GetAsByte(255)

$data=$test1+$test2+$test3+$test4

Tell me what you expect to see in $data?

Do you expect to see many bytes? Or do you expect to see the values of each variable added together?

The $data should come out as a list with 125,180,75,and 255. It just saves typing a separate line for each value and sending it.

Even if I send the data one at a time a still don't RX the proper value.

I'm sorry I used python to send data to the Dynamixel servos and Arduino nano. and it is working.

In all programming languages, that will add the values together into one value. Only strings can be appended with the + symbol. (including Arduino, which uses C++)

String example

$x = "banana"
$y = "apple"

$z = $x + $y

Math example...

$x = 1
$y = 5

$z = $x + $y

What do you think $z would equal in each example?

I understand but did you try running the script ? What values are you RX in your console ?