[oopic] SCP accessing variables in RAM getting garbage

Hi,

OOPic III+ Ver C.1.1+ Compiler 6.1.1

I am trying to access RAM memory in SCP and I must be doing something
stupid. If anyone can look over my shoulder and point it out, I would
be very grateful.

The following is the code in my OOPic:

Dim firstByte As Byte

Dim secondByte As Byte

Dim thirdByte As Byte

Dim firstWord As Word

Dim secondWord As Word

Sub Main()

firstByte = 15 '0F hex

secondByte = 171 'AB hex

thirdByte = 205 'CD hex

firstWord = 4660 '1234 hex

secondWord = 43981 'ABCD hex

End Sub

The following is an excerpt from my C# code:

private void button2_Click(object sender, EventArgs e)

{

serialPort1.Open();

textBox1.Text = "";

response = null;

serialPort1.Write(Cons.node0);

serialPort1.Write(Cons.verifyConnection);

while (response == null || response.Length == 0) { }

SetText(response);

serialPort1.Write(Cons.ackOff);

currentObjName = null;

getMemoryValue("firstByte", 1);

getMemoryValue("secondByte", 1);

getMemoryValue("thirdByte", 1);

getMemoryValue("firstWord", 2);

getMemoryValue("secondWord", 2);

response = null;

serialPort1.Write(Cons.disconnect);

serialPort1.Close();

}

...

private string getMemoryValue(string name, int numBytes)

{

string content;

string retVal = "";

DateTime startTime = DateTime.Now;

int memType = 16; //read/write object's default property

response = null;

errorRet = null;

currentObjName = name;

if (numBytes < 1 || numBytes > 8)

{

throw new Exception("numBytes must be 0<X<9, found: " +
numBytes.ToString());

}

memType += numBytes - 1; // add the number of bytes to read

content = memType.ToString() + Cons.setMemType;

content += getAddr(name) + Cons.setMemAddr;

content += "64" + Cons.setMemSubAddr;

content += Cons.readMemory;

serialPort1.Write(content);

while ((response == null && errorRet == null) || (response != null
&& !response.EndsWith("m") && !response.Contains("*")))

{

if (startTime.AddMilliseconds(1000) < DateTime.Now)

{

throw new Exception("timed out waiting for a response");

}

}

if (response != null)

{

SetText(name + " - sent: " + content + " received: " +
response);

retVal = response;

}

if (errorRet != null)

{

SetText("Error: " + errorRet);

retVal = errorRet;

}

currentObjName = null;

response = null;

errorRet = null;

return retVal;

}

...

private void SetText(string text)

{

// InvokeRequired required compares the thread ID of the

// calling thread to the thread ID of the creating thread.

// If these threads are different, it returns true.

if (this.textBox1.InvokeRequired)

{

SetTextCallback d = new SetTextCallback(SetText);

this.textBox1.Invoke(d, new object[] { text });

}

else

{

if (textBox1.Text.Length > 0)

{

textBox1.Text += Environment.NewLine;

}

if (text.EndsWith("m"))

{

text = text.Remove(text.Length - 1);

}

textBox1.Text += text;

}

}

Don't be overly concerned with the infrastructure; it works fine
with a similar algorithm for reading default properties of objects. Pay
more attention to the bolded code.

I would expect the output to be the hex values of the initialized values
in the OOPic code. Instead I get garbage. This is the output:

firstByte - sent: 16H105J64LM received: 77

secondByte - sent: 16H106J64LM received: BB

thirdByte - sent: 16H107J64LM received: 40

firstWord - sent: 17H108J64LM received: 116C

secondWord - sent: 17H110J64LM received: 0000

Any help will be appreciated.

Thanks,

Dogulas

[Non-text portions of this message have been removed]

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