CCS/AWR1843BOOST: AWR1843 use UniFlash can't flash

Hello Tony,

As a first step of debug, you could do the following:

1. Take a look at our uniflash FAQ page. This might be able to help you get started. Here is the page.

2. I can see the COM ports are not correct in your screenshot. Ideally there should be 2 XDS110 COM ports. Can you try following the steps in the below thread to flash the XDS110 firmware to the XDS110 MCU:

 3. Also, issue like these have been addressed various times by our experts here. So I would like you to do a little homework by using your search engine to look for similar threads.

You can search like following :

"site e2e.ti.com AWR uniflash unable to connect to com port".

Hope this helps. Please let us know if any of this works/doesn't work and we will accordingly proceed further.

Regards,

Ishita

Hi Ishita,

This board not have XDS110 chip(Space saving), so flashing is use TTL connect RS-232 port(com port not XDS110 device).

20pcs PCBA have 5pcs ok, other is fail.

I look use TTL connect RS-232 port flashing ok in E2E,

Thanks a lot.

B.R.

Tony

Hello Tony,

Does that mean you're able to connect to uniflash now? Is your problem solved now?

Regards,

Ishita

Hi All,

 From the post, I notice that the user used TTL gate to read/write RS232_TX/RX interface of AWR1843. The AWR1843/IWR1843 is pure CMOS gate, where TTL has different input/output voltage levels (Vih/Vil, Voh/Vol) as well as the driving current (TTL consumes higher current than CMOS).

 TI's AWR1843BOOST has weak pull-up (100k ohm) resistors on both RS232_TX/RX to 3.3V, which might not be enough for driving TTL gate. It may be worth user to try either CMOS gate or enhance the pull-up resistors (reduce to 10k ohm for higher driving current).

Hi Jesse,

I schematic interface is pull-high(10k ohm) use TTL can't flashing.[Figure-1]

But I have try test the following experiments:

1.Use XDS-110 Box ->can't flashing(0%.

2.Use TTL-> chance can flashing(50%).

3.Use TI board(AWR-1843) XDS-110(remove R128 & R129) wire bonding connect to I board-> can flashing(90%).[Figure-2]

Figure-1

Figure-2

Based on the error message from Uniflash, looks like that COM is somehow is not connectable.

Could you try to connect that COM port by some serial terminal to confirm if that is open to connect?

 Regards,

JG

Hello Tony,

As mentioned by Jesse TTL is different from the standard UART, so I would like to focus on the issue you are seeing with XDS110. Can you clarify if you have connected the RS232_TX line to the pin 33 of XDS110 and RS232_RX line to pin 34? Have you installed the drivers for XDS110 in your PC? What is the COM port name showing up in device manager? Can you show the snapshot for device manager?

Regards,

Vivek

Hi Vivek,

1.RX &TX wiring is ok.

2.Figure 1.

3.Figure 2.

Figure 1.

Figure 2.

Thanks a lot.

B.R.

Tony

Hello Tony,

So if you use the COM11 what is the error you get in Uniflash? Since we have been using the XDS110 on the AWR1843BOOST there should be no issues as such unless there is some connection issue or configuration issue. Are the RS232 lines connected to anything else on your board or is it going to XDS110 only?

Regards,

vivek

Hi Vivek,

Yes~ RS232 lines connected to XDS110 only(not connect any devices)

Error message is not able to connect to serial port, but I has double check connected lines is ok.

Schematic & Layout has check with TI same, but i don't know why can't flashing.

Thanks a lot.

B.R.

Tony.  

Hello Tony,

I can think of only the below reasons why the flashing is not working:

1) On your board the device is not powering up or has got damaged. Can you check the Vbgap voltage to verify if its ~0.9V and ClkM pin to see if the 40Mhz clock is powering up? That would confirm if the basic device power up in happening.

2) The SOP mode is not correct. Can you double check the SOP pin state is properly 101 [ 3.3V 0V 3.3V near the AWR device pin ]  BEFORE the  nReset of the AWr  device is released.

3) The UART connection is not proper.

Regards,

vivek