We use the WIZ108SR in our projects and more than 20 pieces are installed at customers.
We have been investigating a long time (more than 1 year) to find why error of communications occurred, and I finally found it today:
The scenario is the following:
- PC ask for someting to the client and receive an answer through wiznet module. This happens continuously.
- Sometimes, PC needs to ‘browse’ the network and for this, send a broadcast message with a configuration string (MA, MC, LI, PT, …). Wiznet module answers with its configuration, but DURING THE SAME TIME, client was sending data to the serial interface of the wiznet module.
- When the answer comes to the PC, we see with WireShark that the frame has been corrupted (generally 7 or 8 bytes missing).
This problem can be reproduced at 100%.
How can we solve it? Please help…
[ul]WIZ108SR HW 1.1 FW 2.20
Packing time of 3ms
Serial at 115200, N, 8, 1[/ul]