[lwip-users] lwip ram usage

[Eric Shufro]

Hi, I have just gotten lwip to compile for my hcs12   (128k flash, 8k eeprom, 8k ram)  but the ram usage is 16k!

 

I have been looking through the opt.h and lwipopt.h files to shut off things I don’t need, but im not sure how to lower this amount.

 

It seems from viewing the map file, that the majority of ram is used in mem.c, but according to the lwip websites, lwip should use very little ram and about 40kb rom or so.

 

How do l dramatically lower the ram utilization?

 

Thanks a lot,

 

--eric shufro