Hello,
I have a couple questions regarding TCPnet that I would appreciate some assistance on:
1) I am using raw TCP/IP sockets and at runtime I need to be able to dictate which communication platform the sockets open on (Ethernet vs PPP). Is it possible to do this?
2) For some reason I am not getting any DNS servers assigned through my PPP connection. My PPP device is a GPRS modem. Is there a setting that I need to enable to make this happen?
I have been reading the product manual and cannot seem to find the answers in there -- however, if they are there and I just missed them, please feel free to point me to the correct sections. Any insight would be greatly appreciated!
Thank you, Eric
Hi Per,
You are right that netif_cfg is declared as a constant. However, I changed it away from being a constant (see the note in my previous post about that).
Also, TogglePPP_DefGW( ) modifies netif_cfg by using its passed parameter in the "netif_cfg =" statement (third variable to the right of netif_cfg).
What I am concerned about, in regards to stability, is that I have changed netif_cfg to no longer be a constant. So far everything is working fine though.
"Also, TogglePPP_DefGW( ) modifies netif_cfg by using its passed parameter in the "netif_cfg =" statement (third variable to the right of netif_cfg)."
Sorry, I missed that one.
Without seeing the full source of the stack, it is hard to know if the stack has some code that relies on the variable being const.
Yeah, that is the problem that I am having...
Hi Eric Severson
You echo my issues on the closed source stack as a user its hard having to second guess how it operates a lot of the time.
Darren
"You echo my issues on the closed source stack as a user its hard having to second guess how it operates a lot of the time."
Recently had a conversation with our local Keil distributor about getting the source to the TCP stack.
We could get it for 10000 euros. Yes, that's four zeros there!
I'm now starting to consider alternatives.
Probably a lot of companies that already has considered alternatives. It can be quite dangerous to depend on non-trivial closed-source libraries.
It would have been more reasonable to just have an NDA and a _way_ lower price for the source. For that price, I would expect to own the rights to the source and be allowed to sell modified versions of the stack to other customers...
It would have been more reasonable to just have an NDA and a _way_ lower price for the source.
My sentiments also...
Yes, I agree with all of this.
For the record -- Keil said that my little tweak ought to be safe so long as it is done BEFORE calling init_TcpNet().
In regards to an alternative: for a while I have been wishing to use Adam Dunkel's uIP. The only catch, for me, is that I need PPP in addition to Ethernet. Well, I see these guys claim to have uIP working with PPP: savannah.nongnu.org/.../lwip
I haven't had time to look into this too much yet: especially in regards to if any licensing fee may be required for commercial use. But even if there is one, I have to think it would be less than Keil's fee. Also, I don't know if anyone has ported this in to a Keil uVision project and glued it into the standard Ethernet drivers for our MCUs.
If any of you do look into it, I would be very interested to hear what you have to say. If/when I get a chance to dig in to it, I'll be sure to post my results. It'd be great if we could share some source code for getting it going in uVision. Feel free to contact me: erics at the domain of forwardpay dot com.
By the way - is it €10000 per seat, like there is for RL-ARM, to get access to the source code for RTX?
"...is it 10000 euro per seat..."
Sorry, they didn't say.
I work for a small company, I'm the only firmware bod, and one license is sufficient. So it never occured to me to ask the question.