Hi all,
I have been struggeling with this all day and I can not figure it out what the problem is.
I made a application with a STM32L431CC and a W5500. Using the ioLibrary Drivers I’m trying to assign a IP address to my device.
From a cold boot of the system the following (simplefied version) will happen:
w5500_init(); // Initialize the w5500 with the SPI settings and a MAC address.
w5500_version(); // Check the version (check if the SPI is communicating correctly)
w5500_init_dhcp(); // Init the DHCP and set the callbacks (Socket is 0 and buffersize is 2048 byte)
while(1) {
DHCP_run()
}
The system will boot up and produce the following debug output:
w5500_init() called!
Registering W5500 callbacks...
Calling wizchip_init()...
Version is: OK
DHCP enabled
Init DHCP
Registering DHCP callbacks...
> Send DHCP_DISCOVER
<<timeout>> state : STATE_DHCP_DISCOVER
> Send DHCP_DISCOVER
...
When watching the trafic in Wireshark I see the following:
| src | dst | Protocol | Size | Comment |
|---|---|---|---|---|
| 0.0.0.0 | 255.255.255.255 | DHCP | 590 | DHCP Discover - Transaction ID 0x12345679 |
| 192.168.2.1 | 255.255.255.255 | DHCP | 342 | DHCP Offer - Transaction ID 0x12345679 |
| … | ||||
| 0.0.0.0 | 255.255.255.255 | DHCP | 590 | DHCP Discover - Transaction ID 0x12345679 |
| 192.168.2.1 | 255.255.255.255 | DHCP | 342 | DHCP Offer - Transaction ID 0x12345679 |
And this in a continous loop.
Strange thing is; when I’m resetting the microcontroller (and thus re-initializing the W5500 without power loss) It will receive a IP no problem. But resetting the microcontroller everytime from a cold boot is a no go.
Does anyone have any idea what the problem could be?
Thank you in advance!
