Typo in the config file made the LwIP stack way too small on EFM32GG11 STK3701 target. Additionally, the EMAC thread stack was slightly too small when debug printing is on.
For speeding up of LWIP in RZ/A1, I added four new config processes in mbed_lib.json and lwipopts.h, overriden those values.
Since RZ/A1 incorporates a large memory, can actualize speeding up by running with the override value.
Also those new config processes will be helpful for more customize.
I changed stack size because the deafult stack size may not be enough for
Ethernet of GR-PEACH(Cortex-A).
- Stack size is default size + 128 byte
In order to maximize the performance of Ethernet, I changed heap size to
below.
- Heap size is default size * 32 byte(send descriptor num is 16 and recv
descriptoer num is 16).