Re: [lwip-users] Advise on PPPoS implementation

Hi Raivis, By any chance - can you share source codes which would help me to achieve a similar setup? I'm using an STM32F429 with CubeMX, attached a SIM800l GSM modul and I need to enable PPPOS connectivity. I would really appreciate the help. Thank you, Balas -- Sent from:

Re: [lwip-users] Advise on PPPoS implementation

for lwIP users Subject: Re: [lwip-users] Advise on PPPoS implementation Hi Sarp, Just to get it working, yes. But also to avoid crashing on high latency medium I had to enable  SYS_LIGHTWEIGHT_PROT as well. sarp (šajā datumā: Ce, 2018. g. 21. jūn. 11:48) rakstīja: Was the only problem checksum

Re: [lwip-users] Advise on PPPoS implementation

Hi Sarp, Just to get it working, yes. But also to avoid crashing on high latency medium I had to enable SYS_LIGHTWEIGHT_PROT as well. sarp (šajā datumā: Ce, 2018. g. 21. jūn. 11:48) rakstīja: > Was the only problem checksum enabling? > > > > -- > Sent from:

Re: [lwip-users] Advise on PPPoS implementation

Was the only problem checksum enabling? -- Sent from: http://lwip.100.n7.nabble.com/lwip-users-f3.html ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users

Re: [lwip-users] Advise on PPPoS implementation

Hi, Yup, you were absolutely correct. By default all checksums are disabled in Stm32 CubeMX. I just enabled them, regenerated the code via CubeMX, now PPPoS and TCP client works without me faffing around with the config file. That was a bit of challenge to get it working :) Thank you again

Re: [lwip-users] Advise on PPPoS implementation

Hi, On Sun, Nov 05, 2017 at 08:05:28PM +, Raivis wrote: > > Here is the original stm32 lwipopts.h: > https://pastebin.com/LEueShJv Well, I'm confident CHECKSUM_GEN_* values set to 0 won't work when using PPPoS. I know none hardware UART able to compute them on the fly on HDLC formatted

Re: [lwip-users] Advise on PPPoS implementation

Hi, I re-implemented on Unix system with threading, the code is basically 99% identical as the one I'm running on stm32. I double checked the priorities, and they are the same as on unix system. All relative to default thread priority Also I only used tcpip_init() to initialize it, as far as I

Re: [lwip-users] Advise on PPPoS implementation

Hi, On Thu, Nov 02, 2017 at 11:15:18PM +, Raivis wrote: > Hi, > > I tested with UDP, and it didn't work. > > But, whole day, I've been working on porting the PPP GSM interface to unix > system. Took me a while since, I hadn't worked with LwIP at this detail > before. > > Thankfully, I can

Re: [lwip-users] Advise on PPPoS implementation

Hi, I tested with UDP, and it didn't work. But, whole day, I've been working on porting the PPP GSM interface to unix system. Took me a while since, I hadn't worked with LwIP at this detail before. Thankfully, I can confirm it works on my linux machine, but not on stm32. So I've probably made

Re: [lwip-users] Advise on PPPoS implementation

Hi, On Thu, Nov 02, 2017 at 05:02:36PM +, Raivis wrote: > That's a very good, point, I've been so frustrated that it didn't occur to > me that I can just print the packet in my serial function. > > Apologies I somehow over glanced your suggestion before. > > I enabled the PPP_DEBUG and

Re: [lwip-users] Advise on PPPoS implementation

That's a very good, point, I've been so frustrated that it didn't occur to me that I can just print the packet in my serial function. Apologies I somehow over glanced your suggestion before. I enabled the PPP_DEBUG and PRINTPKT_SUPPORT, and removed all filters from ppp_dump_packet() in utils.c,

Re: [lwip-users] Advise on PPPoS implementation

Hi, On Wed, Nov 01, 2017 at 03:22:07PM +, Raivis wrote: > Hi, > > I just connected the satellite modem to the micro-controller, and I get the > same results. Where I'm able to establish the PPP session, but it won't > connect to my TCP server. > > I wanted to ask, is there a debug define I

Re: [lwip-users] Advise on PPPoS implementation

Hi, I just connected the satellite modem to the micro-controller, and I get the same results. Where I'm able to establish the PPP session, but it won't connect to my TCP server. I wanted to ask, is there a debug define I can enable which would let me know what bytes it tried to transfer over the

Re: [lwip-users] Advise on PPPoS implementation

Hi, On Thu, Oct 26, 2017 at 12:34:16PM +0100, Raivis wrote: > > Any other ideas, what I should be looking for or what could be the cause? I'm confident lwIP isn't the problem here, you can still enable PPP debugging PPP_DEBUG and PPP print packet support with PRINTPKT_SUPPORT. Since you are

Re: [lwip-users] Advise on PPPoS implementation

Raivis wrote: 3. ST implementation of LwIP is faulty. I'm using LwIP version which comes with CubeMX. I've noticed it is version 2.0.0 instead of 2.0.3. I don't think it is. Comparing it to our original 2.0.0 sources, they seem to have changed only compiler warnings this time. ST *eth

Re: [lwip-users] Advise on PPPoS implementation

Hi, No, the connection is not even established with the remote server. In the debugger I see, that netconn API definitely invokes the PPP interface, and goes into my serial write function, but no connection is established whatsoever. Note I tested whether the server works via telnet. Another

Re: [lwip-users] Advise on PPPoS implementation

Hi, On Wed, Oct 25, 2017 at 09:27:12PM +0100, Raivis wrote: > > In any case here is my log up to the point, where it starts to re-transmit > the TCP packet over and over again: Looks like PPP is working properly here. Do you actually receive those TCP packets on the remote side ? Sylvain

[lwip-users] Advise on PPPoS implementation

Hi, I've been trying to implement a PPPoS on STM32 micro-controller for the last couple weeks. I think I've reached a point where I'm stuck and due to lack of my experience in this field I don't know how to proceed. Project background: 1. I'm using GPRS/GSM modem A6 2. It is done on Nucleo