Serial Connection Not Working on Modified Router

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Mon, 12/12/2016 - 2:58am
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Mattle
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Serial Connection Not Working on Modified Router

I have a Sagem 2504 router. Following the advice from OpenWRT wiki . I managed to solder the header pins in the correct place. I've attached pics below. My soldering isn't the best, but I'm working with a gas iron that I'm not too comfortable with.

The pins from right to left are:

...................o Pwr
...................o Rx
...................o Tx
...................o Gnd

I am using this USB to serial cable:AP4GAH322B-1

I am using Minicom 2.2 on the Mac to connect to the router via serial.

These are the steps I follow:

  1. Connect cable to header pins. Pwr -> Pwr, Rx -> Tx, Tx -> Rx, Gnd -> Gnd.
  2. Open terminal on mac and type: /opt/minicom/2.2/bin/minicom -s
  3. In Minicom I've tried various baud rates. I use, but the recommendation is 9600 8N1
  4. Minicom initializes the modem, but when I press CTRL + A mincom says Offline. Nothing is displayed in the terminal.

Note that when testing I do not plug the router into the mains. I use the 3.3v header. I've tried with power though, which didn't solve my problem.

I'm at a bit of a loose end here. Any ideas on what I'm doing wrong or what I'm missing?

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