Do not init network

Question

I have dealt with the w5500 and it worked. But faced with the w5100. Microcontroller stm32f100. Link is a good (led flash), reset OK. But it is not initialized network attributes. All I tried. What is the problem? #define WIZNET_WRITE_OPCODE 0xF0 #define WIZNET_READ_OPCODE 0x0F //Wiznet W5100 Reg Addr #define MR 0x0000 // Mode Register #define GAR 0x0001 // Gateway Address: 0x0001 to 0x0004 #define SUBR 0x0005 // Subnet mask Address: 0x0005 to 0x0008 #define SAR 0x0009 // Source Hardware Address (MAC): 0x0009 to 0x000E #define SIPR 0x000F // Source IP Address: 0x000F to 0x0012 #define RMSR 0x001A // RX Memory Size Register #define TMSR 0x001B // TX Memory Size Register void SPI_Write(uint16_t addr, uint8_t data) { // Activate the CS pin wizchip_select(); // Start Wiznet W5100 Write OpCode transmission wizchip_write(WIZNET_WRITE_OPCODE); // Start Wiznet W5100 Address High Bytes transmission wizchip_write((uint8_t)((addr & 0xFF00) >> 8)); // Start Wiznet W5100 Address Low Bytes transmission wizchip_write((uint8_t)(addr & 0x00FF)); // Start Data transmission wizchip_write(data); // CS pin is not active wizchip_deselect(); } uint8_t SPI_Read(uint16_t addr) { uint8_t r; // Activate the CS pin wizchip_select(); // Start Wiznet W5100 Read OpCode transmission wizchip_write(WIZNET_READ_OPCODE); // Start Wiznet W5100 Address High Bytes transmission wizchip_write((uint8_t)((addr & 0xFF00) >> 8) ); // Start Wiznet W5100 Address Low Bytes transmission wizchip_write((uint8_t)(addr & 0x00FF)); //Read data r = wizchip_read(); // CS pin is not active wizchip_deselect(); return(r); } void W5100_Init() { uint32_t i ; // Ethernet Setup uint8_t mac_addr[6] = {0x02,0x16,0x36,0xDE,0x58,0xF6}; uint8_t ip_addr[4] = {192,168,1,2}; uint8_t sub_mask[4] = {255,255,255,0}; uint8_t gtw_addr[4] = {192,168,1,1}; // Setting the Wiznet W5100 Mode Register: 0x80 SPI_Write(MR,0x80); // MR = 0b10000000; for (i=0xFFFFF;i!=0;i–); // the delay after reset chip SPI_Write(GAR + 0,gtw_addr[0]); SPI_Write(GAR + 1,gtw_addr[1]); SPI_Write(GAR + 2,gtw_addr[2]); SPI_Write(GAR + 3,gtw_addr[3]); SPI_Write(SAR + 0,mac_addr[0]); SPI_Write(SAR + 1,mac_addr[1]); SPI_Write(SAR + 2,mac_addr[2]); SPI_Write(SAR + 3,mac_addr[3]); SPI_Write(SAR + 4,mac_addr[4]); SPI_Write(SAR + 5,mac_addr[5]); SPI_Write(SUBR + 0,sub_mask[0]); SPI_Write(SUBR + 1,sub_mask[1]); SPI_Write(SUBR + 2,sub_mask[2]); SPI_Write(SUBR + 3,sub_mask[3]); SPI_Write(SIPR + 0,ip_addr[0]); SPI_Write(SIPR + 1,ip_addr[1]); SPI_Write(SIPR + 2,ip_addr[2]); SPI_Write(SIPR + 3,ip_addr[3]); // Setting the Wiznet W5100 RX and TX SPI_Write(RMSR,0x55); SPI_Write(TMSR,0x55); }

Eugeny · Answer

linuxbergi: But it is not initialized network attributes. How did you know it? Why do you think “network attrubites” are not initialized? Please explain your issue.

linuxbergi · Answer

I understood not read registers. But why? Working procedures for 5500: uint8_t wizchip_read() { uint8_t rb; while (!(SPI1 → SR & SPI_SR_TXE)); //check buffer SPI1 → DR = 0xFF ; // transfer while (!(SPI1->SR & SPI_SR_RXNE)); // wait input rb = SPI1 → DR ; return rb; } void wizchip_write(uint8_t wb) { uint8_t rb; while (!(SPI1 → SR & SPI_SR_TXE)); //wait buffer SPI1 → DR = wb ; // byte to line while (!(SPI1->SR & SPI_SR_RXNE)); // wait input rb = SPI1 → DR ; } For 5100 it does not work. Can faulty “hardware”?

Eugeny · Answer

What is the actual circuit diagram of your module?

linuxbergi · Answer

Files attached 2.pdf (108 KB) 1.pdf (52.3 KB)

Eugeny · Answer

linuxbergi: Files attached Circuit seems to be ok. I propose using scope or logical analyzer to see what is going on with SPI bus and there’re no issues with it (for example, 16 bit communication instead of 8-bit communication).