Hi! I have a small problem.
When I use SMCConnect (PChar(ComPortName),1), it return TRUE for almost any existing COM-port. However, I would like to be able to verify that it is connected K8096. I tried to add a check on SMCGetMotorCount and SMCGetInputCount, but they also return TRUE.
Can you suggest some sort of procedure for checking the connection?
ps: I use Free Pascal + Lazarus
Regards, Yuriy
You will need to check before connecting, not while connected
What check?
My current code:
if SMCConnect (PChar(ComPortName),1) then
if SMCConnected then
if SMCGetMotorCount = 1 then
if SMCGetInputCount = 5 then begin
// Show success connect
end else SMC_ConnectErrorMessage
else SMC_ConnectErrorMessage
else SMC_ConnectErrorMessage
else SMC_ConnectErrorMessage;ps: SMC_ConnectErrorMessage shows error dialog
Some notes about your code:
[ul][li]The motor count will always be 1 and the input count will always be 5 for the K8096, so you are effectively checking values that never change.[/li][li]If SMCConnect returns True, you do not need to check again if you are connected (because you are) with SMCConnected.[/li][/ul]
if SMCConnect(PChar(ComPortName), 1) then
begin
// OK
end else
SMC_ConnectErrorMessage;There is no way to check the connection by calling any of the methods in the DLL.
The only way I know possible is by using the Windows Setup API to check if the VID/PID combination of the port matches with a K8096. And of cource, this will be a complex piece of code.
Re-read upper: when I use SMCConnect (PChar(ComPortName),1), it return TRUE for almost any existing COM-port. Not only for SMS. So I tried to add additional checks. The failure of determining the presence-absence of SMC on the COM-port has brought me with this question on your forum.
There is no way to check the abscence or presence of a K8096 by calling any of the methods in the DLL.
SMCConnect will always return True because you are connecting to a valid COM port, which is expected to be of a K8096.
Use the Windows Setup API to check if the VID/PID combination of the port matches with a K8096. Or check the correct port number in Device Manager.
Ok. Thanks for your explanation.
Checking combination of VID/PID is not as easy as would like.
Therefore, an alternative method was used:
if SMCConnect (PChar(ComPortName),1) then begin
// SMC сhecking by torque enabling
SMCSetTorque(1,TRUE);
// 'shhhh' pause, ornamentally
Sleep (2000);
if SMCGetTorque (1) then begin
// Show success connect here
// and disabe torque
SMCSetTorque(1,FALSE);
end else SMC_ConnectErrorMessage
end else SMC_ConnectErrorMessage;I use yours description for Pascal API (calls)
Still have trouble with checking:
make success connect to SMC K8096
make chek of connection
SMCSetTorque (0,TRUE); // Set torque to ON
case SMCGetTorque (0) of
TRUE : Writeln ('Success');
FALSE: begin
Writeln ('Unsuccess');
end;
end;
Despite the state of FALSE (Unsuccess), TORQUE mode is switched on (audible ‘zzzzzz’ from stepper motor).
Could you help me with that trouble?
ps: The same with DEMO…
Could you make any comments for boolean status getting problem?
I do not want to use visual studio.
It is advisable to write a program using Free Pascal.
The same behavior in C++ & C#. But all works Ok in yours MotorDemo.exe
Still waiting your recommendations.
Please make sure that you are checking the correct values for true and false (see also: viewtopic.php?f=3&t=9168).