How to use serial TTL with CFE with no board jumpers

Installing and Using OpenWrt
1

Hi,

I bought a serial TTL USB adapter. I assume the USB would go into the computer with some terminal software loaded and the pin outs connect to the board to emulate a console.

I am following the instructions on this page for DGND3700v2, has anyone actually done this for this netgear? or know of a photo that shows where the jumper J302 is?!

After opening up the board i could not find any jumper pin outs or board contacts for J302 at all. I assume the documentation doesnt cover all board revisions even if the router models match :- that or its really for v1 or something.

I tried to put the USB into the port(s) on the router instead and short RX/TX on boot thinking it would be the same but it doesnt seem to work. The doc/guide also says to connect GND, so i also tried with connecting a long wire (that may have some resistance) and also connecting it to a metal cabinet hoping that would work as a ground :- nothing.

Any advice to get this bloody thing working would be appreciated..

cheers

2

Judging from the very blurry FCC images, I'd expect the UART to be right of the SOC, just over the multi spi-nor flash footprints/ above the "ABLOOF-1.6" markings.

1 Like
3

thank you for replying!

can you please tell me where i can see this image you are looking at?

4

@buccinator, welcome to the communty!

He told you:

Lookup your device's FCCID and look at the page.

Hope this helps. Also, feel free to search the Table of Hardware.