AWR1843: issue with XDS110 debug probe - JTAG mode in custom board

Hi,

Jairo Gallardo said:

but what means  "without an active debug session"?, means that if I am in a debug session I don´t need to connect this pin? (I haven´t connected it), could this be the issue?

I have connected the pin TGTVDD and now we detect data using the osciloscope, but I do not know which UARTs need to be connected or maybe both using the expansion ports like this post

Hello Jairo,

XDS110 which is connected with AWR1843BOOST, emulated two UART connection. And mmw Demo from mMWave SDK uses both of those, one for sending command to device and another to read the object data from the device.

Now in your case you are saying that with that external XDS110, you are getting only one UART emulated. Could you check that on your custom board, both of UART pins are connected to JTAG connector on which you are connecting this external XDS110. This way we can find UART connection emulated over XDS110 to PC.

And you are saying that you are debugging with CCS, that means you may have flashed the ccsdebug.bin file to AWR device. Which UART or interface did you use to flash that (using Uniflash Tool). As this flashing requires UART line of device (named as RS232RX, RS232TX).

These same pin is being used by application to send the command to the device.

You can use UART driver test application instead to check if data is available on UART line,

C:\ti\mmwave_sdk_03_05_00_01\packages\ti\drivers\uart\test (there you can do UART instance change to switch UART interface).

Regards,

Jitendra

Hi,

Jitendra Gupta said:

Now in your case you are saying that with that external XDS110, you are getting only one UART emulated. Could you check that on your custom board, both of UART pins are connected to JTAG connector on which you are connecting this external XDS110. This way we can find UART connection emulated over XDS110 to PC

When I connect the XDS110 I can see 2 COM ports (data and user) in the PC, now, the XDS110 has 2 output connectors, one of 20 pins and the other of 14 pins (auxiliary) right?, but the debug tool only has 1 UART available (auxiliary port)

the issue is that in the AWR1843 labs we have 2 UARTS (user and data), so how could I connect 2 UARTs from the awr1843 with 1 UART in the XDS110?

Hi,

Jitendra Gupta said:

Like MRR here which uses Auxiliary COM port only to transmit object data at device boot up. It has configuration parameters embedded within application so you don't need to send command over UART to device

So you are telling that if I want to debug my custom awr1843 board with the xds110 I only can debug the labs where the GUI only needs the data port to work because the xds110 only have 1 UART available?

Hi Jairo,

THat statement was in impression if you emulator (UART to USB) emulated only one UART.

And for that you need to check in datasheet which of UART is connected with your emulator and emulated as COM port in PC, based on your last reply it is equivalent to auxiliary COM port (XDS110 of AWR1843BOOST). 

This COM port / UART of device is of TX only (wrt AWR), sending object data, so on PC you can only receive the data. To verify your connection, I was recommending that TI-Rex which has all the configuration embedded within the app and sends object data over auxiliary COM port on boot up.

Regards,

Jitendra

Hi,

Jitendra Gupta said:

And for that you need to check in datasheet which of UART is connected with your emulator and emulated as COM port in PC, based on your last reply it is equivalent to auxiliary COM port (XDS110 of AWR1843BOOST). 

So, the UART that is available in the XDS110 debug tool is the one that appears like auxiliary COM port when I connect the XDS110 to the PC?