AWR1843AOPEVM: AWR1843AOP flashing with UART

RAVI YADAV

Part Number: AWR1843AOPEVM
Other Parts Discussed in Thread: UNIFLASH, , AWR1843

Tool/software:

Hi ,

I have awr1843aopevm development kit , I want to flash the radar sensor on using the UART which is been connected to CP usb to TTL but I would like to probe this UART named as Ar_rs232 in kit schematic and connect it to external ftdi and then flash it with uniflash .

Is it possible and how can I do it .

Any help will be benefitial I am doing this for a new design and using 1843aop in it but I am not sure can I flash it by probing the UART and not using the CP ic as in reference schematic.

Thanks

7 months ago

0 Aydin Kiasat 7 months ago

TI__Expert 5461 points

Hello Ravi,

You should be able to set the UART MUX on the board and use TP18 and TP19 test points to flash over UART. Your title also mentions JTAG, you could check the following JTAG Flasher User Guide.

Regards,

Aydin

0 ravi yadav 7 months ago in reply to Aydin Kiasat

Prodigy 50 points

Hi Aydin kiasat,

Thanks for reply

Actually, I am connecting UART directly from u18 ic pin 10 AR_RS232_RX and pin 6 AR_RS232_RX to an ftdi as in my original design i will not be using any mux .

can you please suggest without controlling any mux how can i do it .

0 ravi yadav 7 months ago in reply to ravi yadav

Prodigy 50 points

I even tried with break uart on TP18 and 19 and setting s1.1 on , by connecting these tp rx and tx to ftdi tx rx but still not able to flash it with FTDI with uniflash.

0 Aydin Kiasat 7 months ago in reply to ravi yadav

TI__Expert 5461 points

Hi Ravi,

Which SOP mode are you using, could you double check if it's Flashing mode?

Just to check, have you swapped the flash with a different flash? If so, it is possible the flash variant is not supported. Additionally, could you probe at the QSPI lines and verify any communication is happening?

Regards,

Aydin

0 RAVI YADAV 7 months ago in reply to Aydin Kiasat

Prodigy 30 points

Hi Aydin,

My SOP mode is in flashing mode ,switches are at correct position and I am using awr1843aopevm development kit and using its default flash memory.

Also I am able to flash through the inbuilt usb connector in the kit with uniflash.

But if I probe the UART mentioned earlier I am not able to flash , UNIFLASH shows error can't open com port check port or permission.

0 Aydin Kiasat 7 months ago in reply to RAVI YADAV

TI__Expert 5461 points

Hi Ravi,

When you're probing at the test points, could you also check if U15, IN1/IN2 is gnd. There is S1 switch on the board which the second position (UART_MUX_CTRL2) should ground the pin. Also, you have the TX of the cable connected to the RX of the device and vice versa, correct? and to understand your set up better, you are using an external USB to UART, with an FTDI on it, please correct me if not.

Regards,

Aydin

0 RAVI YADAV 7 months ago in reply to Aydin Kiasat

Prodigy 30 points

Hi Aydin,

U are right I am using an external ftdi my s3 position is for flashing is right and connecting rx to tx and tx to rx of ftdi to AR UART .

I tried with break UART by controlling mux but still didn't get it .

Then I directly connected ar_rs232 UART which is on schematic to my ftdi but was not able to flash.

0 ravi yadav 7 months ago in reply to Aydin Kiasat

Prodigy 50 points

Hi Aydin ,

I also did U15, IN1/IN2 gnd and now my switch positions are as follow s1.1-on ,s1.2-on s1.3 -off , s1.4-off and s2 switch all off

is there any chance that is supports only cp21x usb to ttl ?

regards

Ravi Yadav

0 Aydin Kiasat 7 months ago in reply to ravi yadav

TI__Expert 5461 points

Hi Ravi,

what's your logic level.

Please refer to the following thread: AWR1843BOOST: Flashing through UART without the XDS110 Interface - Sensors forum - Sensors - TI E2E support forums

Regards,

Aydin

0 ravi yadav 7 months ago in reply to Aydin Kiasat

Prodigy 50 points

Hi Aydin ,

My issue is resolved actually AWR did not supported ftdi rl232 but it supported cp210x usb to ttl is used cp210x and was able to flash the awr1843 through direct uart and with breakway uart also.

Thanks for help.

0 Aydin Kiasat 7 months ago in reply to ravi yadav

TI__Expert 5461 points

Hi Ravi,

We've tried with FTDI232RL and worked fine, no issues. Not sure if this is the same or yours is a different variant. However, thanks for the update and glad you were able to flash.

Regards,

Aydin