w5500 - SPI issue reading registers

Question

I am currently trying to use the w5500 chip (wiz850io) for ethernet communication using SPI. I am having issues setting the network configuration. When I read and write MISO only outputs 0x01 0x02 0x03. Is this the correct output for both reading and writing? uint8_t txsize[8] = {2,2,2,2,2,2,2,2}; uint8_t rxsize[8] = {2,2,2,2,2,2,2,2}; wiz_NetInfo netInfo = { .mac = {0x00, 0x08, 0xdc, 0x1d, 0x29, 0xd7}, // Mac address .ip = {192, 168, 1, 36}, // IP address .sn = {255, 255, 255, 0}, // Subnet mask .gw = {192, 168, 1, 1}, // Gateway address .dns = {8, 8, 8, 8}, // DNS server .dhcp = NETINFO_STATIC }; // DHCP enable / disable uint8_t Ch_Version; SpiIf_ChConfig GETchConfig; wiz_NetInfo getnetInfo; int8_t phy_link =0; void w5500_Init(void) { /* W5500 Chip Reset*/ IfxPort_setPinLow(&MODULE_P02,6); delay_cnt(5000); IfxPort_setPinHigh(&MODULE_P02,6); delay_cnt(10000); reg_wizchip_cs_cbfunc(cs_sel, cs_desel); reg_wizchip_spi_cbfunc(spi_rb, spi_wb); reg_wizchip_spiburst_cbfunc(spi_rburst, spi_wburst); delay_cnt(10000); wizchip_init(txsize, rxsize); do{//check phy status. if(ctlwizchip(CW_GET_PHYLINK,&phy_link) == -1){ printf("Unknown PHY link status.
"); delay_cnt(10000); } }while(phy_link == PHY_LINK_OFF); wizchip_setnetinfo(&netInfo); delay_cnt(10000); wizchip_getnetinfo(&getnetInfo); Ch_Version = WIZCHIP_READ(VERSIONR); } Here are my logic analyzer outputs for writing and reading the MAC address. Writing: settingMAC1916×547 35.4 KB Reading: gettingMAC1680×519 29.9 KB Reading VERSIONR = 0x01 I am new to implementing these modules so any help on where I have gone wrong or what my next steps should be would be appreciated.

sarah.dellanno · Answer

I have realized the CS is resetting early which is being controlled by the master. Would this master spi setting be specific to my MCU or is there a general recommended setup for the master?

cq td · Answer

Hi Eugeny， I have the same problem，and there is enough time(a few microseconds)after last falling edge before deactivating the chip select. Regardless of reading any register， W5500 response: 0x01 0x02 0x03 0x00 0x00 …，Are there other possible reasons？

Eugeny · Answer

This means data you read is 0x01 0x02 0x03 0x00 0x00 … If you have problem, please create new thread and expain the problem.