On Mon, Oct 27, 2014 at 10:53:25AM -0700, mjackson wrote:
1. After PPP has completed negotiations (LCP, AUTH and IPCP),
which api should I call to connect to a remote server?
your application can use the regular lwip mechanisms once the link is
up, without special consideration for ppp
hello lwip users,
i'd like to keep track of my gsm device's position while a ppp data
connection is active. unfortunately, that means that the non-ppp
messages (/\r\n+CENG:[0-9,a-f]+\r\n/ in my case) arrive in the same
stream as ppp messages. (at least, it appears, they are not fully
Hi chrysn,
On Fri, Nov 14, 2014 at 10:09:18AM +0100, chrysn wrote:
hello lwip users,
i'd like to keep track of my gsm device's position while a ppp data
connection is active. unfortunately, that means that the non-ppp
messages (/\r\n+CENG:[0-9,a-f]+\r\n/ in my case) arrive in the same
If I was you, I would:
- make sure the port I'm using works, by first running known good examples.
- study those examples to learn how to work with lwip.
- read the wiki, it is great for bed reading.
- trace assertions to my code, execute step by step and see what I'm
doing wrong.
- try to figure
My view:
Since PPP expects a serial transparent interface, and you are not
providing that, I would write a tap which provides that to PPP and
taps all other data out.
GSM modem real serial -- my module - PPP virtual serial
--- tracking virtual
BTW,
\r\nUNDER-VOLTAGE WARNING\r\n
is a clear indication that your power supply is not well designed and/or
your module is not well decoupled.
It needs 2A current to transmit for a very short time, you need a 100uF
low impedance
in parallel with 2uF MLCC close to the module; or better, what
Hi,
I'm trying to send ping and udp packets. But for both packets I'm getting
assertion failed like this
Assertion pbuf_free: p-ref 0 failed at line 651 in ../src/lwip/core/pbuf.c
Can anyone please help me..
Regards,
Aaisha Ahmed.
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In response to the remark:
Simon is right: routing doesn't have anything to do with the source address
and it shouldn't have to
I think Simon is not right (no pun intended).
I am not entirely familiar with the ideas behind LwIP. But sourcebased
routing is very much in line with rfc1122 (ip for
hello sergio,
thank you for your responses.
On Fri, Nov 14, 2014 at 10:06:00AM -0300, Sergio R. Caprile wrote:
Since PPP expects a serial transparent interface, and you are not
providing that, I would write a tap which provides that to PPP and
taps all other data out.
GSM modem real
Chrysn,
yes, Simcom tech department sucks... they've had some internal issues on
the move from SIM340 to SIM900.
They are chinese and english docs are poor and mostly non-existent.
We've had a tech contact long ago but hopefully I haven't contacted them
for years.
Regarding the hw, you are too
HaaCee2 wrote:
I am not entirely familiar with the ideas behind LwIP. But sourcebased
routing is very much in line with rfc1122 (ip for hosts). I quote:
Under the Strong ES model, the route computation for an outgoing datagram
is the mapping:
route(src IP addr, dest
On 14-11-14 20:27, Simon Goldschmidt [via lwIP] wrote:
HaaCee2 wrote:
I am not entirely familiar with the ideas behind LwIP. But sourcebased
routing is very much in line with rfc1122 (ip for hosts). I quote:
Under the Strong ES model, the route computation for an outgoing
datagram
HaaCee2 wrote:
I beg to differ
I've added a task for this to the tracker:
https://savannah.nongnu.org/task/index.php?13397
Simon
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Hi chrysn,
On Fri, Nov 14, 2014 at 05:43:47PM +0100, chrysn wrote:
i was afraid so when i first saw them, but i never ran into an
UNDER-VOLTAGE POWER DOWN condition so far; thing is, i'm running my
entire board off 3.3V, which is the threshold for the warning. the
module can do down to
Hi,
The product is fine,I have been using the SIM900D without any problems in many
different countries as well. It may run for a days without dropping the
connection. Obviously you have a hardware issue as your not supplying enough
voltage or power supply voltage drops when the gsm signal is
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