How to use ioLibrary with Simulink?

Question

Hi, I have a W5500 chip connect to my NXP S32K148 by SPI. I only need to send data out and not receive. I have a block to transmit SPI data on the master, what would be the best way to add this into my Simulink model so I can send data out onto ethernet? Thanks!

louis · Answer

Hi matt, W5500 has one 16KB TX memory for Socket n TX Buffer Blocks and one 16KB RX memory for Socket n RX buffer Blocks. 16KB TX memory is initially allocated in 2KB size for each Socket TX Buffer Block. image621×865 67 KB Thank you.

Matt Danecca · Answer

Hi, I only need to send 400 bytes of data every 100ms so I guess I only need to use 1 socket Tx buffer as that is 2K? Do I pack the buffer at 100ms then send SEND command, clear the buffer then repeat every 100ms?

louis · Answer

Yes, 400bytes are sufficient to transmit to 1 socket. Thank you.

yuvsaha123 · Answer

Matt_Danecca: Hi, I only need to send 400 bytes of data every 100ms so I guess I only need to use 1 socket Tx buffer as that is 2K? Do I pack the buffer at 100ms then send SEND command, clear the buffer then repeat every 100ms? thanks my issue has been fixed.