what is the w5500 initialize function ?

Question

what is the w5500 initialize function ? int8_t rrr = socket(TCP_CLIENT_SN, Sn_MR_TCP, 21, 0); if ( rrr != TCP_CLIENT_SN) { SEGGER_RTT_printf(0, "socket() oepn <0x%x>: failed
", rrr); //close(TCP_CLIENT_SN); } else { SEGGER_RTT_printf(0, "socket() oepn : Success
"); ---here } while (1) { qtime_msleep_yield(50); ret_val = getSn_SR(TCP_CLIENT_SN); if (ret_val == SOCK_INIT) // socket() 후에 getSn_SR() 이 SOCK_INIT 이면 소켓 초기화 과정 완료 { SEGGER_RTT_printf(0, "%d socketg is --> SOCK_INIT: 0x%x
", TCP_CLIENT_SN, ret_val); --> here break; } if (wait_ms++ > 200) { SEGGER_RTT_printf(0, "
 check SOCK_INIT is timeout.
"); break; } } // pc서버 프로그램은 port 21 사용 ret_val = connect(TCP_CLIENT_SN, server_ip, 21); // if (ret_val != SOCK_OK) { SEGGER_RTT_printf(0, "Connecting to server --> failed: %d
", ret_val); close(TCP_CLIENT_SN); --> here } else{ SEGGER_RTT_printf(0, "Connecting to server --> sucess: %d
", ret_val); } // 3. 연결 완료 대기 /* uint8_t getSn_SR(uint8_t sn); // 지정된 **소켓 번호(sn)**의 상태 레지스터(Sn_SR)를 읽어서 반환 */ wait_ms = 0; while (ret_val != SOCK_ESTABLISHED) { qtime_msleep_yield(100); ret_val = getSn_SR(TCP_CLIENT_SN); //SEGGER_RTT_printf(0, "ret_val = 0x%x
", ret_val); ---> ret_val is not SOCK_ESTABLISHEDl. this value is 0x13 continue, I suspect that the w5500 chip has not been initialized. What is the initialization function? if (ret_val == SOCK_CLOSED) { SEGGER_RTT_printf(0, "
Socket closed
"); break; } if (ret_val == SOCK_CLOSE_WAIT) { SEGGER_RTT_printf(0, "
Socket closed while waiting.
"); break; } if (wait_ms++ > 200) { SEGGER_RTT_printf(0, "
Connect timeout.ret_val (0x%x)
", ret_val); close(TCP_CLIENT_SN); break; } qtime_msleep_yield(50); } if (ret_val == SOCK_ESTABLISHED) { SEGGER_RTT_printf(0, "
Connection is SOCK_ESTABLISHED!
"); }

Aimee0 · Answer

Hello. Please refer to the Application Note and the example code’s wizchip_initialize(...) function in the link below. https://docs.wiznet.io/Product/Chip/Ethernet/W5500/Application/tcp https://github.com/WIZnet-ioNIC/WIZnet-PICO-C/blob/main/port/ioLibrary_Driver/src/wizchip_spi.c