[W55RP20 SSM] W5500 Ethernet - DHCP 테스트

기존의 RP2040과 W5500을 테스트 했던 Arduino 개발환경 에서는 DCHP가 자동으로 설정되지만 SDK를 이용하면 직접 코드를 작성해야 한다. 아쉽다... 이걸 다시 작성해야 하다니.. 

 

아무튼 DHCP 예제를 참고로 해서 테스트 해보자.

 

#include "port_common.h"

#include "wizchip_conf.h"
#include "w5x00_spi.h"
#include "socket.h"

#include "dhcp/dhcp.h"
#include "timer/timer.h"

/* Buffer */
#define ETHERNET_BUF_MAX_SIZE (1024 * 4)
#define DATA_BUF_SIZE			ETHERNET_BUF_MAX_SIZE

/* Socket */
#define SOCKET_DHCP 0
#define SOCKET_DNS 1

#define DHCP_RETRY_COUNT 5

/* Port */
#define PORT_LOOPBACK 5001

/**
 * ----------------------------------------------------------------------------------------------------
 * Variables
 * ----------------------------------------------------------------------------------------------------
 */
/* Network */
static wiz_NetInfo g_net_info =
    {
        .mac = {0x00, 0x08, 0xDC, 0x00, 0x00, 0x00}, // MAC address
        .ip = {192, 168, 1, 4},                     // IP address
        .sn = {255, 255, 255, 0},                    // Subnet Mask
        .gw = {192, 168, 1, 1},                     // Gateway
        .dns = {8, 8, 8, 8},                         // DNS server
        .dhcp = NETINFO_DHCP                       // DHCP enable/disable
};

/* Loopback */
static uint8_t g_ethernet_buf[ETHERNET_BUF_MAX_SIZE] = {
    0,
}; // common buffer

/* DHCP */
static uint8_t g_dhcp_get_ip_flag = 0;


/* Timer */
static volatile uint16_t g_msec_cnt = 0;


/**
 * ----------------------------------------------------------------------------------------------------
 * Functions
 * ----------------------------------------------------------------------------------------------------
 */
/* Clock */
static void set_clock_khz(void);

/* DHCP */
static void wizchip_dhcp_init(void);
static void wizchip_dhcp_assign(void);
static void wizchip_dhcp_conflict(void);

/* Timer */
static void repeating_timer_callback(void);


int main()
{
    uint8_t retval = 0;
    uint8_t dhcp_retry = 0;
    uint8_t dns_retry = 0;

    int cnt = 0;

    stdio_init_all();

    while (true) {
        if(cnt>5)break;
        printf("%d]Hello, world!\n", cnt++);
        sleep_ms(1000);
    }
  
    // For more examples of UART use see https://github.com/raspberrypi/pico-examples/tree/master/uart
    printf("W55RP20 Start\n");

    wizchip_spi_initialize();
    wizchip_cris_initialize();
    wizchip_reset();

    printf("wizchip_initialize");
    wizchip_initialize();
    wizchip_check();

    /* Get network information */
    //print_network_information(g_net_info);
    wizchip_1ms_timer_initialize(repeating_timer_callback);

    if (g_net_info.dhcp == NETINFO_DHCP) // DHCP
    {
        wizchip_dhcp_init();
    }
    else // static
    {
        network_initialize(g_net_info);

        /* Get network information */
        print_network_information(g_net_info);
    }

    while (true) {
      /* Assigned IP through DHCP */
        if (g_net_info.dhcp == NETINFO_DHCP)
        {
            retval = DHCP_run();

            if (retval == DHCP_IP_LEASED)
            {
                if (g_dhcp_get_ip_flag == 0)
                {
                    printf(" DHCP success\n");

                    g_dhcp_get_ip_flag = 1;
                }
            }
            else if (retval == DHCP_FAILED)
            {
                g_dhcp_get_ip_flag = 0;
                dhcp_retry++;

                if (dhcp_retry <= DHCP_RETRY_COUNT)
                {
                    printf(" DHCP timeout occurred and retry %d\n", dhcp_retry);
                }
            }

            if (dhcp_retry > DHCP_RETRY_COUNT)
            {
                printf(" DHCP failed\n");

                DHCP_stop();

                while (1)
                    ;
            }

            wizchip_delay_ms(1000); // wait for 1 second
        }
    }
}



/* DHCP */
static void wizchip_dhcp_init(void)
{
    printf(" DHCP client running\n");

    DHCP_init(SOCKET_DHCP, g_ethernet_buf);

    reg_dhcp_cbfunc(wizchip_dhcp_assign, wizchip_dhcp_assign, wizchip_dhcp_conflict);
}

static void wizchip_dhcp_assign(void)
{
    getIPfromDHCP(g_net_info.ip);
    getGWfromDHCP(g_net_info.gw);
    getSNfromDHCP(g_net_info.sn);
    getDNSfromDHCP(g_net_info.dns);

    g_net_info.dhcp = NETINFO_DHCP;

    /* Network initialize */
    network_initialize(g_net_info); // apply from DHCP

    print_network_information(g_net_info);
    printf(" DHCP leased time : %ld seconds\n", getDHCPLeasetime());
}

static void wizchip_dhcp_conflict(void)
{
    printf(" Conflict IP from DHCP\n");

    // halt or reset or any...
    while (1)
        ; // this example is halt.
}

/* Timer */
static void repeating_timer_callback(void)
{
    g_msec_cnt++;

    if (g_msec_cnt >= 1000 - 1)
    {
        g_msec_cnt = 0;

        DHCP_time_handler();
    }
}

 

 

테스트 결과 DHCP로 IP를 정상적으로 할당 받는것을 확인 할 수 있다.

 

wizchip_check -> OK
 DHCP client running
============================================================================================
 W5500 network configuration : DHCP

 MAC         : 00:08:DC:00:00:00
 IP          : 192.168.1.6
 Subnet Mask : 255.255.255.0
 Gateway     : 192.168.1.1
 DNS         : 
============================================================================================

 DHCP leased time : 7200 seconds
 DHCP success