IWR1642BOOST: IWR1642BOOST not booting

Hi Luca,

Please ensure that you are powering the board with a 5V 3A DC supply.  Check to see if you have any jumpers on the board. To flash software on the board, SOP0 and SOP2 need to have jumpers. To run flashed software, SOP0 needs a jumper. To use the Dev Pack with Radar Studio, SOP0 and SOP1 need jumpers.

Have you made any modifications to the board or flashed any software?  Is there any visible damage? If so, can you send a picture?

Regards,

Justin

Hi Justin,

The power supply is 3A and there's no visible damage on the board as you can see in the attached images. The only modifications made on the board is for routing the UART to J5 connector (soldered R169 and R166, removed 0ohm from R128 and R129).

The jumper on SOP0 is present and also on SOP2 because I've alredy tried to load an image on this board and it was working but now the two led are blinking and the pc does not see the COM port (neither the cfg com port nor the data port)

Regards,

Luca

Actually I'm using an external FTDI 3.3V USB to serial converter attached to J5 so I have the cfg COM here and the data COM out of the micro USB connector.

But the problem is that the board seems not powerd correctly because the 5V led is not glowing as before, it's blinking continuously.

Regards,

Luca

Hi Luca,

You may be attaching the FTDI 3.3V usb connector to the wrong port. It needs to be attached to J6, pins 5(tx) and 7(rx), see the schematic. 

Regards,

Justin

Hi Justin,

I typo mistake, sorry, I meant J6 and not J5. When I wrote I did not have the board with me to check the name of the connectore.

Anyway my setup corresponds to what you described, tx and rx connected to pin 5 and 7 plug the FTDI groun on pin 2 of J7.

Any suggestion on how to figure out why the board doesn't power properly?

Regards,

Luca

Hi Luca,

Can you measure the voltage on the 5 V and 3.3 V pins with the board powered on?  If possible, can you check to see if any GPIO pins are shorted with Ground?

Thanks,

Justin