Zolertia Z1, RAM overflow - microCoAP_server

[AppleInside]

Hi everyone, today i tried to build the microcoap_server example on my Zolertia z1 board, but the compiling process ends with a "RAM overflow of 832 bytes" error. There is a way to fix this problem by myself?

Thanks a lot! 👍

[malosek]

Hello @AppleInside , it is possible to run coap server on MSP with networking stack (6lowpan node), you just need to be little more RAM careful. The basic rule is that if you are missing RAM somewhere then you have to shave of few bytes from the places when it is not used:) Do you try plan to have 6lowpan host or node?

Anyway check flags from gnrc minimal example CFLAGS += -DGNRC_PKTBUF_SIZE=512 -DGNRC_IPV6_NC_SIZE=0

wbr malo

[AppleInside]

Hi @malosek, i'm trying to build the sample version of the coap-server (the one included in the _RIOT/examples/microcoap_server_ directory). I don't know which files "shave" for have a lighter ram footprint, moreover in the microcoap's related Makefile there is indicated the list of the board that have "insufficient memory" for it, so maybe there is no way to make it compatible.

br, Alessandro

[aabadie]

Digging this up: I would propose to use the nanocoap example instead. I built it locally and it fits on the Z1:

$ make BOARD=z1 -C examples/nanocoap_server/

[...]

   text    data     bss     dec     hex filename
  51990      34    7084   59108    e6e4 .../RIOT/examples/nanocoap_server/bin/z1/nanocoap_server.elf

[aabadie]

Closing.