Hi,
I am working on a project to convert ethernet communication to serial port RS485 & I2C. Is there some documents about the S2E software structure that can help me to start? What I found are only about how to use it, not modify it. Thanks
Xiao Xu1I found ... only how to use it ... not modify it.
As well you should friend - as well you should. Somewhat difficult for any maker to "fully/properly" anticipate "each/every" potential modification. Reasonable (i.e. more "mainstream") ones may be accommodated - especially if they can expand desirability/Sales. But modification is not, "1st order of business" for most maker/vendors.
The entire S2E product & software package - including the Quick Start, User Guide and the many, provided code examples - in combination - should enable you to, "start."
Believe that S2E specifically targets Ethernet to RS232 - RS485 is a close "cousin" to RS232. (balanced line driver - multiple units can attach to 485 bus - you must add control signal to each/every potential "transmit" device) Ethernet to I2C will be more of a challenge - a good basis for beginning would be mastery of I2C master to I2C Slave - only then would I expand the attempt to Ethernet.
Much pertinent info right here - this forum - especially as regards I2C.
You may note that the Stellaris MCU w/in the S2E kit has been newly classed as "NRND" - which may impact your future plans...