Memory Map

Minimum stack size should be 2048 bytes, minimum heap size should be at least 2048 bytes.

All other memories (buffers, etc.) are user-defined and application specific and may be allocated statically or dynamically.

The net.lib library uses two special code sections:

.nettextfast
.nettextslow

Performance critical functions are located in .nettextfast and should be mapped to fastest memory in the linker command file. .nettextslow can be linked to slower memory without noticeable performance penalties.

Example linker command file:

Refer to Example Linker Command File

Code and Data Size

Required Code and Data size depends on used protocols and sockets:

CCS3.3, CGTools 4.3.8, netlib 2.60
Code Size:
    Adapter + MAC + PHY             9973 bytes
    ARP                             2199 bytes
    Sockets                         7034 bytes
    IP                               929 bytes
    ICMP                             835 bytes
    UDP                             1459 bytes
    TCP                             9573 bytes
    DNS                             1041 bytes
    DHCP                            2609 bytes

Stack Size:                         2048 bytes
Heap Size:
    Adapter/PHY                      228 bytes
    per UDP/ICMP Socket              504 bytes
    per TCP Socket                   640 bytes

Static RAM:
    ARP Cache                       2704 bytes
    TCP sequence number cache       5170 bytes