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soft PPP - embedded PPP TCP/IP stack for AVR controllers
We develop a PPP-TCP/IP stack for AVR controllers, e.g. for the i-easy to replace the current hardware-based stack. The new stack will be designed for compatibility with the current i-easy library and is intended to include full stack functionality in its final extent.
Compared to a hardware solution producing a software stack has several advantages:
softPPP starts from a basic framework stack, where the desired properties are appended and revised. The full softPPP release is expected for November and will have its focus on PPP. Some reference projects are using the stack, e.g. the TCP/IP branch was implemented on the VR3 pocket ethernet in 2001 (an ethernet add-on for the MIPS-based VR3 Linux PDA).
The aim for i-easy applications is to make our customers' ports of current applications to the new stack a minimal efford. The current i-easy design will be substituted by a design using the softPPP stack on a second AVR controller in late November.
softPPP will implement all necessary low-level functions (protocoll, buffering etc.) that are currently in use via the S-760X. The i-easy library and its extensions (e.g. an extension for GPRS applications) are working on the first AVR MCU of the i-easy and implement the high-lewel commands like dial-up, ftp, e-mail etc. The current i-easy libray will be preserved. And the revised hardware interface will be compatible.
softPPP will be available on its own, too. In the first stages softPPP will to be sold on AVR MCUs,
where the price depends on the stack-update-option (6 months / 1 year / ...). Please note that
the AVR MCUs do not offer any comptible packages, so a hardware redesign will be necessary for
applications moving from S760X to softPPP.
Suggestions and bug-reports are welcome at email@example.com or in the stack forum.
For more information please contact firstname.lastname@example.org.