W5500-EVB-PICO check after reset

TCP/IP Chip W5500
1

Hello,
I’ve a problem with the W5500-EVB-PICO.
I try to setup the PHY configuration to be sure that the speed is 100 Mbps and the communication is full duplex.

    gpio_init(LED_PIN);
    gpio_set_dir(LED_PIN, GPIO_OUT);

    stdio_init_all();
    
    uint32_t real_clock = clock_get_hz(	clk_sys );	
    printf("%d\r\n",real_clock);
    
    /* Launch Wiznet driver */
    wizchip_spi_initialize();   // Initialize the SPI with DMA capability
    wizchip_cris_initialize();  // Initialize cris
    wizchip_reset();            // Reset the Wiznet chipset
    wizchip_initialize();       // Initialize the Wiznet chipset
    wizchip_check();            // Check the Wiznet configuration?

    
    wiz_NetInfo g_net_info = {
        .mac = {0x00, 0x08, 0xDC, 0x12, 0x34, 0x56}, // MAC address
        .ip = {172, 16, 18, 244},                    // IP address  172.16.18.244
        .sn = {255, 255, 0, 0},                      // Subnet Mask
        .gw = {172, 16, 16, 254},                    // Gateway
        .dns = {8, 8, 8, 8},                         // DNS server
        .dhcp = 0                                    // DHCP enable/disable
    };

    set_PHY_configuration( );
    reset_PHY( );

Where the set_PHY_configuration() is defined as shown below:

void set_PHY_configuration(void)
{
    /* PHY configuration structure */
    wiz_PhyConf phy_conf;

    /* Configure PHY */
    phy_conf.by     = PHY_CONFBY_SW;
    phy_conf.mode   = PHY_MODE_MANUAL;
    phy_conf.speed  = PHY_SPEED_100;
    phy_conf.duplex = PHY_DUPLEX_FULL;

    /* Apply PHY configuration */
    wizphy_setphyconf(&phy_conf);
}

The green LED flashes briefly after reset and then remains lit.
The yellow LED flashes for a long time and then stays on.
While the yellow LED is flashing, I have to wait because the W5500 is not yet ready to create a socket.
When the yellow LED is stable ( ON ) , I can successfully set up the network socket.

I use this function to check the link status:

 while (! (wizphy_getphylink( ) == PHY_LINK_ON ) )

But I can’t find any other function to check that the W5500 and network are fully configured and ready to be programmed with a socket after a reset.

Which register do I have to test? Is there a specific function to check that the Wiznet PHY and network are ready?

Kind regards

2

You must be doing something on the W5500 after PHY reset you did not show here in the post. For example trying to open socket in the loop and that’s why activity LED is flashing. Look at the Wireshark output to see effect of your code on the traffic.

3

Thanks for your reply.
To be more precise I show you all the code starting from the main() function:

int main() {
#ifndef PICO_DEFAULT_LED_PIN
#warning blink example requires a board with a regular LED
#else
    const uint LED_PIN = PICO_DEFAULT_LED_PIN;
    
    gpio_init(LED_PIN);
    gpio_set_dir(LED_PIN, GPIO_OUT);

    stdio_init_all();
    
    uint32_t real_clock = clock_get_hz(	clk_sys );	
    printf("%d\r\n",real_clock);
    
    /* Launch Wiznet driver */
    wizchip_spi_initialize();   // Initialize the SPI with DMA capability
    wizchip_cris_initialize();  // Initialize cris
    wizchip_reset();            // Reset the Wiznet chipset
    wizchip_initialize();       // Initialize the Wiznet chipset
    wizchip_check();            // Check the Wiznet configuration?

    
    wiz_NetInfo g_net_info = {
        .mac = {0x00, 0x08, 0xDC, 0x12, 0x34, 0x56}, // MAC address
        .ip = {172, 16, 18, 244},                    // IP address  172.16.18.244
        .sn = {255, 255, 0, 0},                      // Subnet Mask
        .gw = {172, 16, 16, 254},                    // Gateway
        .dns = {8, 8, 8, 8},                         // DNS server
        .dhcp = 0                                    // DHCP enable/disable
    };



    set_PHY_configuration( );

If I put a breakpoint after the function set_PHY_configuration() I have to wait a lot for the yellow led to stop blinking.
There are no instructions other than those in the code snippet.

I cannot really understand this behaviour.

Kind regards