I have managed to establish a connection from my Mac (OS X 10.9) to Raspberry Pi (Raspbian 3.6.11) using a serial USB to TTL cable by following these instructions.

I can successfully establish a serial connection to the Pi using screen, and operate the Pi normally.

I would now like to transfer files from my Mac to the Pi over this cable using PPP. I have tried following the instructions on this page, specifically:

On the Pi:

sudo pppd noauth

I had to specify noauth to avoid the error:

pppd: The remote system is required to authenticate itself
pppd: but I couldn't find any suitable secret (password) for it to use to do so.

Then in the Mac Terminal:

sudo pppd -detach noauth proxyarp /dev/tty.usbserial-FTGCC2MV 115200 passive local maxfail 0 nocrtscts xonxoff

This gives me the error:

Wed Oct 30 13:26:56 2013 : publish_entry SCDSet() failed: Success!
Wed Oct 30 13:26:56 2013 : publish_entry SCDSet() failed: Success!
Wed Oct 30 13:26:56 2013 : Using interface ppp0
Wed Oct 30 13:26:56 2013 : Connect: ppp0 <--> /dev/tty.PL2303-000012FD
Wed Oct 30 13:27:26 2013 : LCP: timeout sending Config-Requests

If I enable debug on the client side I get:

Wed Oct 30 13:26:31 2013 : sent [LCP ConfReq id=0x1 <asyncmap 0xa0000> <magic 0x79e49366> <pcomp> <accomp>]

So it seems like an LCP ConfReq is being sent to the Pi but no response is received.

How can I resolve this issue?

  • what stops you from getting a network cable instead? – lenik Oct 30 '13 at 23:50
  • @lenik nothing stops me getting a network cable, but if I use a network cable, I need two cables: one to power the device and one to communicate with it. If can do everything over a USB to TTL cable, I only need one cable. Simple as that. – j b Oct 31 '13 at 12:37
  • If you only want to use one cable, why not use a WiFi dongle? Pretty sure this will also speed up your data transfers. – myhd Feb 15 '14 at 20:28
  • @myhd as it happens, that's exactly what I'm now doing :) – j b Feb 16 '14 at 20:11
  • Still an interesting question in need of a solution... – dlu Apr 3 '18 at 17:52

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