TMS570LS3137: serial communication issue with tms570ls3137

Hello Usman,

I don't know how to integrate TI XDS100V2 driver to Lauterbach development tool. I will post your question to TI CCS forum, they may have the solution or good suggestions.

Usman,

Looking at the schematics of the TMS570LS31HDK I see the secondary port of the XDS100v2 is connected to a CPLD's JTAG lines and not to a serial port on the device itself.

In this case, this is completely independent of the choice of Debug Probe. You will have to collect the data through a direct connection to the device's serial port pins.

Hope this helps,
Rafael

Hello Usman,

Some other things you can check that might help determine what is going on are below.

1.) Do you see the COM port when you have a look at your Device Manager information on your PC? To confirm the COM port is associated to the HDK and not something else in your system, you should be able to see the COM port come and go as you plug and unplug from the HDK from the USB cable.

2.) Do you see the SCITx and SCIRx diodes light up when attempting to send or receive messages? These diodes are D10 and D11 and are located as shown in the picture below.

If you are able to observe the diodes illuminating when you program is executing but you do not see the COM port in the device manager, there is, most likely, an issue with the driver supporting the virtual COM port of the CPLD and this should be addressed with Lauterbach. If you do not see the the diodes illuminate and the COM port is present, then there is, most likely, an issue with your code that needs to be resolved.