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Altera_Forum
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21 years ago

lwip MicroC/OS-II throughput

Does anyone know if the throughput rates on pate 1-31 of the "Using Lightweight IO with the Nios II Processor tutorial" document was for 100Mbps ethernet? The transmit rate of 5.16 Mbps seems r...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
19 years ago

Hi all,

my testing environment is Cyclone 1c20 chip, 50MHz Nios II cpu, Lan91c111 MAC. I am using lwIP 1.1 with Quartus II 6.0 and Nios IDE 6.0 software.

I am transfering bulk image data from the embedded system to PC via UDP and the fastest speed I ever got is about 9Mbit/s ( 1.1MByte/s).

The problem is that when I use any compiler optimize options when building my NiosII project, it stops functioning. It must be compiled with -O0 level.

Does anybody have any idea about this problem? Thanks!!