IWR6843AOP: Unable to flash custom board

Adam Koutny

Part Number: IWR6843AOP
Other Parts Discussed in Thread: UNIFLASH,

Hi,

I'm unable to flash my custom board based on IWR6843AOP using Uniflash and sdk prebuild binary. I'm using RS232_TX, RX (U16, V16) board's pins connected using FTDI cable.

Uniflash console error:

[30. 10. 2023 18:09:18] [INFO] Cortex_R4_0: Initialization complete.

[30. 10. 2023 18:09:18] [INFO] Cortex_R4_0: Flashing process starting...

[30. 10. 2023 18:09:18] [INFO] Cortex_R4_0: Connecting to COM Port COM6...

[30. 10. 2023 18:09:18] [INFO] Cortex_R4_0: Reset connection to device

[30. 10. 2023 18:09:18] [INFO] Cortex_R4_0: Set break signal

[30. 10. 2023 18:09:38] [ERROR] Cortex_R4_0: Initial response from the device was not received. Please power cycle device before re-flashing.

[30. 10. 2023 18:09:38] [ERROR] Cortex_R4_0: Not able to connect to serial port. Recheck COM port selected and/or permissions.

[30. 10. 2023 18:09:38] [INFO] Cortex_R4_0: Flashing instance clean-up initiated...

[30. 10. 2023 18:09:38] [INFO] Cortex_R4_0: Instance deinitialized!

I also tried to monitor serial communication using oscilloscope seeing break signal, however, no response present. Could you please check my design? Is it possible to provide it not in public way here?

Thank you,

Adam

over 1 year ago

+1 CHETHAN KUMAR Y.B. over 1 year ago

TI__Mastermind 25835 points

Adam,

Please disconnect the JTAG & RS232 lines and any other I/Os connected to external boards/adapters. This happens when you power cycle the radar board then the below condition would be violated.. And VIO could get power through the non-fail safe I/Os.

Connect JTAG/RS232 lines only after SOP assertion and reset release.

Also please share your setups images to understand how FTDI cable is connected to the mmWave sensor board.

Thanks and regards,

CHETHAN KUMAR Y.B.

0 Ankit Mohanty over 1 year ago in reply to CHETHAN KUMAR Y.B.

TI__Genius 9570 points

Hello Adam,

To share the schematic for the review, please accept the private request that I have sent you.

Regards

Ankit

0 Adam Koutny over 1 year ago in reply to CHETHAN KUMAR Y.B.

Intellectual 440 points

Hi CHETHAN, I have already read this post in related question, however, I did not properly tested it. Now, to my astonishment, it seems it is working.

Thank you for you quick help,

Regards,

Adam

0 Adam Koutny over 1 year ago in reply to Ankit Mohanty

Intellectual 440 points

Hi Ankit, it seems Chethan advice solved this issue. Therefore, no design check is needed for now.

Thank you, Regards,

Adam

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IWR6843AOP: Unable to flash custom board