Re: [lwip-users] PPPos problem LWIP2.1

[Patrick Klos]

On 12/14/2018 2:49 PM, arsz6733 wrote:
> Hey Patrik
> Thank you for your response
> No I just use polling in the thread the same as when I communicate with GSM
> modem in at command mode!

What baud rate are you trying to use?  Modem commands are usually a lot 
smaller than PPP packets tend to be.  I doubt you could poll the serial 
port fast enough depending on your baud rate and what else is going on 
in your system?

> So how should it look like?

Why do you present those bytes to LwIP when you have collected 32 of 
them?  (i.e. where did that number come from?)  It looks (to me) like 
you've received 16 bytes, then lost a bunch, then received 16 more 
bytes, then lost a bunch more.  Do you wait until you have 32 bytes?  Or 
do you always have 32 bytes in the receive buffer when you poll??

Patrick Klos
Klos Technologies, Inc.