Identify Module Model using Connection Manager

[JeffPS13]

Hello,

I have two TMCL modules connected via usb and I connect to them using the code below. However, would like to programmatically identify the module model that is connected to each COM port. I've used port_list in connection_manager.py to return the COM ports with TMCL modules attached but I don't see a means of returning the module model.

Thanks,
Jeff

            self.my_interface = ConnectionManager("--interface usb_tmcl --port COM11").connect()
            self.module = TMCM6214(self.my_interface,module_id=1)
            print( str(self.module))

            self.my_interface2 = ConnectionManager("--interface usb_tmcl --port COM9").connect()
            self.module2 = TMCM3351(self.my_interface2,module_id=2)
            print( str(self.module2))

[trinamic-bp]

Hi @JeffPS13,
you could use the "get firmware version" command for this. The 32 bit integer you get contains the module model:

from pytrinamic.tmcl import TMCLCommand

...

    get_fw_result = self.my_interface.send(TMCLCommand.GET_FIRMWARE_VERSION, 1, 0, 0, module_id=1)  # use module_id=2 for the other interface
    module_code = get_fw_result.value >> 16
    print(module_code)

I did not test this code, but this should be it.

[JeffPS13]

Thanks for the quick response. When I run this I get: AttributeError: 'ConnectionManager' object has no attribute 'send'

[trinamic-bp]

Did you remove the "connect"?

self.my_interface = ConnectionManager("--interface usb_tmcl --port COM11")

vs

self.my_interface = ConnectionManager("--interface usb_tmcl --port COM11").connect()

[JeffPS13]

Still getting this error: AttributeError: 'ConnectionManager' object has no attribute 'send'

Here's my code:

from pytrinamic.connections import ConnectionManager
from pytrinamic.tmcl import TMCLCommand


my_interface = ConnectionManager("--interface usb_tmcl --port COM11 --module-id 1")

get_fw_result = my_interface.send(TMCLCommand.GET_FIRMWARE_VERSION, 1, 0, 0, module_id=1)  
module_code = get_fw_result.value >> 16
print(module_code)

[trinamic-bp]

This should do it:

from pytrinamic.connections import ConnectionManager
from pytrinamic.tmcl import TMCLCommand


my_interface = ConnectionManager("--interface usb_tmcl --port COM11").connect()

get_fw_result = my_interface.send(TMCLCommand.GET_FIRMWARE_VERSION, 1, 0, 0, module_id=1)  
module_code = get_fw_result.value >> 16
print(module_code)
my_interface.close()  # properly close the COM-port

Note, that ConnectionManager("--interface usb_tmcl --port COM11 --module-id 1") returns an instance of the connection manager class. If you take this connection manager instance and call the connect() function you get the an instance of the UsbTmclInterface class, which has the send() function.

BTW: To not forget the close() you better use the with statement

from pytrinamic.connections import ConnectionManager
from pytrinamic.tmcl import TMCLCommand


connection_manager = ConnectionManager("--interface usb_tmcl --port COM11")

with connection_manager.connect() as my_interface:
    get_fw_result = my_interface.send(TMCLCommand.GET_FIRMWARE_VERSION, 1, 0, 0, module_id=1)  
    module_code = get_fw_result.value >> 16
    print(module_code)
# my_interface.close() is automatically called when exiting the scope of the with context

[JeffPS13]

Thanks, this works and returns the model numbers of the modules connected to each COM-port.

Regarding using "with" and or close(), I'm a bit confused. My application is constantly sending and receiving with the modules, what is the benefit of closing and opening the interface multiple times? I close the interface when the application closes. If I'm not using best practices please advise.

Thank you very much,
Jeff

[trinamic-bp]

There is no need to close and reopen multiple times, just make sure to do the close if the application closes.